#include <stdio.h>
#include "ssl_locl.h"
-#include "kssl_lcl.h"
#include <openssl/buffer.h>
#include <openssl/rand.h>
#include <openssl/objects.h>
# include <openssl/engine.h>
#endif
+static int ssl_set_version(SSL *s);
static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b);
-#ifndef OPENSSL_NO_TLSEXT
-static int ssl3_check_finished(SSL *s);
-#endif
+static int ssl3_check_change(SSL *s);
+static int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
+ unsigned char *p);
-#ifndef OPENSSL_NO_SSL3_METHOD
-static const SSL_METHOD *ssl3_get_client_method(int ver)
-{
- if (ver == SSL3_VERSION)
- return (SSLv3_client_method());
- else
- return (NULL);
-}
-IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
- ssl_undefined_function,
- ssl3_connect, ssl3_get_client_method)
-#endif
int ssl3_connect(SSL *s)
{
BUF_MEM *buf = NULL;
if (cb != NULL)
cb(s, SSL_CB_HANDSHAKE_START, 1);
- if ((s->version & 0xff00) != 0x0300) {
+ if ((s->version >> 8) != SSL3_VERSION_MAJOR
+ && s->version != TLS_ANY_VERSION) {
SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
+ s->state = SSL_ST_ERR;
ret = -1;
goto end;
}
- if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
+ if (s->version != TLS_ANY_VERSION &&
+ !ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
SSLerr(SSL_F_SSL3_CONNECT, SSL_R_VERSION_TOO_LOW);
return -1;
}
if (s->init_buf == NULL) {
if ((buf = BUF_MEM_new()) == NULL) {
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
s->init_buf = buf;
/* setup buffing BIO */
if (!ssl_init_wbio_buffer(s, 0)) {
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
s->state = SSL3_ST_CW_CLNT_HELLO_A;
s->ctx->stats.sess_connect++;
s->init_num = 0;
- s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
/*
* Should have been reset by ssl3_get_finished, too.
*/
goto end;
if (s->hit) {
- s->state = SSL3_ST_CR_FINISHED_A;
-#ifndef OPENSSL_NO_TLSEXT
+ s->state = SSL3_ST_CR_CHANGE_A;
if (s->tlsext_ticket_expected) {
/* receive renewed session ticket */
s->state = SSL3_ST_CR_SESSION_TICKET_A;
}
-#endif
} else {
s->state = SSL3_ST_CR_CERT_A;
}
break;
case SSL3_ST_CR_CERT_A:
case SSL3_ST_CR_CERT_B:
-#ifndef OPENSSL_NO_TLSEXT
/* Noop (ret = 0) for everything but EAP-FAST. */
- ret = ssl3_check_finished(s);
+ ret = ssl3_check_change(s);
if (ret < 0)
goto end;
if (ret == 1) {
s->hit = 1;
- s->state = SSL3_ST_CR_FINISHED_A;
+ s->state = SSL3_ST_CR_CHANGE_A;
s->init_num = 0;
break;
}
-#endif
+
/* Check if it is anon DH/ECDH, SRP auth */
/* or PSK */
- if (!
- (s->s3->tmp.
- new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP))
-&& !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) {
+ if (!(s->s3->tmp.new_cipher->algorithm_auth &
+ (SSL_aNULL | SSL_aSRP | SSL_aPSK))) {
ret = ssl3_get_server_certificate(s);
if (ret <= 0)
goto end;
-#ifndef OPENSSL_NO_TLSEXT
+
if (s->tlsext_status_expected)
s->state = SSL3_ST_CR_CERT_STATUS_A;
else
skip = 1;
s->state = SSL3_ST_CR_KEY_EXCH_A;
}
-#else
- } else
- skip = 1;
- s->state = SSL3_ST_CR_KEY_EXCH_A;
-#endif
s->init_num = 0;
break;
*/
if (!ssl3_check_cert_and_algorithm(s)) {
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
break;
ret = ssl3_get_server_done(s);
if (ret <= 0)
goto end;
-#ifndef OPENSSL_NO_SRP
- if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
- if ((ret = SRP_Calc_A_param(s)) <= 0) {
- SSLerr(SSL_F_SSL3_CONNECT, SSL_R_SRP_A_CALC);
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- goto end;
- }
- }
-#endif
+
if (s->s3->tmp.cert_req)
s->state = SSL3_ST_CW_CERT_A;
else
if (ret <= 0)
goto end;
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
+#if defined(OPENSSL_NO_NEXTPROTONEG)
s->state = SSL3_ST_CW_FINISHED_A;
#else
if (s->s3->next_proto_neg_seen)
#endif
if (!s->method->ssl3_enc->setup_key_block(s)) {
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
SSL3_CHANGE_CIPHER_CLIENT_WRITE))
{
ret = -1;
+ s->state = SSL_ST_ERR;
goto end;
}
break;
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
+#if !defined(OPENSSL_NO_NEXTPROTONEG)
case SSL3_ST_CW_NEXT_PROTO_A:
case SSL3_ST_CW_NEXT_PROTO_B:
ret = ssl3_send_next_proto(s);
goto end;
s->state = SSL3_ST_CW_FLUSH;
- /* clear flags */
- s->s3->flags &= ~SSL3_FLAGS_POP_BUFFER;
if (s->hit) {
s->s3->tmp.next_state = SSL_ST_OK;
- if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) {
- s->state = SSL_ST_OK;
- s->s3->flags |= SSL3_FLAGS_POP_BUFFER;
- s->s3->delay_buf_pop_ret = 0;
- }
} else {
-#ifndef OPENSSL_NO_TLSEXT
/*
* Allow NewSessionTicket if ticket expected
*/
if (s->tlsext_ticket_expected)
s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
else
-#endif
-
- s->s3->tmp.next_state = SSL3_ST_CR_FINISHED_A;
+ s->s3->tmp.next_state = SSL3_ST_CR_CHANGE_A;
}
s->init_num = 0;
break;
-#ifndef OPENSSL_NO_TLSEXT
case SSL3_ST_CR_SESSION_TICKET_A:
case SSL3_ST_CR_SESSION_TICKET_B:
ret = ssl3_get_new_session_ticket(s);
if (ret <= 0)
goto end;
- s->state = SSL3_ST_CR_FINISHED_A;
+ s->state = SSL3_ST_CR_CHANGE_A;
s->init_num = 0;
break;
s->state = SSL3_ST_CR_KEY_EXCH_A;
s->init_num = 0;
break;
-#endif
+
+ case SSL3_ST_CR_CHANGE_A:
+ case SSL3_ST_CR_CHANGE_B:
+ ret = ssl3_get_change_cipher_spec(s, SSL3_ST_CR_CHANGE_A,
+ SSL3_ST_CR_CHANGE_B);
+ if (ret <= 0)
+ goto end;
+
+ s->state = SSL3_ST_CR_FINISHED_A;
+ s->init_num = 0;
+ break;
case SSL3_ST_CR_FINISHED_A:
case SSL3_ST_CR_FINISHED_B:
- if (!s->s3->change_cipher_spec)
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
SSL3_ST_CR_FINISHED_B);
if (ret <= 0)
case SSL_ST_OK:
/* clean a few things up */
ssl3_cleanup_key_block(s);
+ BUF_MEM_free(s->init_buf);
+ s->init_buf = NULL;
- if (s->init_buf != NULL) {
- BUF_MEM_free(s->init_buf);
- s->init_buf = NULL;
- }
-
- /*
- * If we are not 'joining' the last two packets, remove the
- * buffering now
- */
- if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
- ssl_free_wbio_buffer(s);
- /* else do it later in ssl3_write */
+ /* remove the buffering */
+ ssl_free_wbio_buffer(s);
s->init_num = 0;
s->renegotiate = 0;
goto end;
/* break; */
+ case SSL_ST_ERR:
default:
SSLerr(SSL_F_SSL3_CONNECT, SSL_R_UNKNOWN_STATE);
ret = -1;
}
end:
s->in_handshake--;
- if (buf != NULL)
- BUF_MEM_free(buf);
+ BUF_MEM_free(buf);
if (cb != NULL)
cb(s, SSL_CB_CONNECT_EXIT, ret);
return (ret);
}
+/*
+ * Work out what version we should be using for the initial ClientHello if
+ * the version is currently set to (D)TLS_ANY_VERSION.
+ * Returns 1 on success
+ * Returns 0 on error
+ */
+static int ssl_set_version(SSL *s)
+{
+ unsigned long mask, options = s->options;
+
+ if (s->method->version == TLS_ANY_VERSION) {
+ /*
+ * SSL_OP_NO_X disables all protocols above X *if* there are
+ * some protocols below X enabled. This is required in order
+ * to maintain "version capability" vector contiguous. So
+ * that if application wants to disable TLS1.0 in favour of
+ * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
+ * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3.
+ */
+ mask = SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1
+#if !defined(OPENSSL_NO_SSL3)
+ | SSL_OP_NO_SSLv3
+#endif
+ ;
+#if !defined(OPENSSL_NO_TLS1_2_CLIENT)
+ if (options & SSL_OP_NO_TLSv1_2) {
+ if ((options & mask) != mask) {
+ s->version = TLS1_1_VERSION;
+ } else {
+ SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
+ return 0;
+ }
+ } else {
+ s->version = TLS1_2_VERSION;
+ }
+#else
+ if ((options & mask) == mask) {
+ SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
+ return 0;
+ }
+ s->version = TLS1_1_VERSION;
+#endif
+
+ mask &= ~SSL_OP_NO_TLSv1_1;
+ if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
+ s->version = TLS1_VERSION;
+ mask &= ~SSL_OP_NO_TLSv1;
+#if !defined(OPENSSL_NO_SSL3)
+ if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
+ s->version = SSL3_VERSION;
+#endif
+
+ if (s->version != TLS1_2_VERSION && tls1_suiteb(s)) {
+ SSLerr(SSL_F_SSL_SET_VERSION,
+ SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
+ return 0;
+ }
+
+ if (s->version == SSL3_VERSION && FIPS_mode()) {
+ SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+ return 0;
+ }
+
+ } else if (s->method->version == DTLS_ANY_VERSION) {
+ /* Determine which DTLS version to use */
+ /* If DTLS 1.2 disabled correct the version number */
+ if (options & SSL_OP_NO_DTLSv1_2) {
+ if (tls1_suiteb(s)) {
+ SSLerr(SSL_F_SSL_SET_VERSION,
+ SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
+ return 0;
+ }
+ /*
+ * Disabling all versions is silly: return an error.
+ */
+ if (options & SSL_OP_NO_DTLSv1) {
+ SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_WRONG_SSL_VERSION);
+ return 0;
+ }
+ /*
+ * Update method so we don't use any DTLS 1.2 features.
+ */
+ s->method = DTLSv1_client_method();
+ s->version = DTLS1_VERSION;
+ } else {
+ /*
+ * We only support one version: update method
+ */
+ if (options & SSL_OP_NO_DTLSv1)
+ s->method = DTLSv1_2_client_method();
+ s->version = DTLS1_2_VERSION;
+ }
+ }
+
+ s->client_version = s->version;
+
+ return 1;
+}
+
int ssl3_client_hello(SSL *s)
+{
+ if (s->state == SSL3_ST_CW_CLNT_HELLO_A) {
+ if(tls_construct_client_hello(s) == 0)
+ goto err;
+
+ s->state = SSL3_ST_CW_CLNT_HELLO_B;
+ }
+
+ /* SSL3_ST_CW_CLNT_HELLO_B */
+ return ssl_do_write(s);
+ err:
+ s->state = SSL_ST_ERR;
+ return -1;
+
+}
+
+int tls_construct_client_hello(SSL *s)
{
unsigned char *buf;
unsigned char *p, *d;
int j;
SSL_COMP *comp;
#endif
+ SSL_SESSION *sess = s->session;
buf = (unsigned char *)s->init_buf->data;
- if (s->state == SSL3_ST_CW_CLNT_HELLO_A) {
- SSL_SESSION *sess = s->session;
- if ((sess == NULL) || (sess->ssl_version != s->version) ||
-#ifdef OPENSSL_NO_TLSEXT
- !sess->session_id_length ||
-#else
- /*
- * In the case of EAP-FAST, we can have a pre-shared
- * "ticket" without a session ID.
- */
- (!sess->session_id_length && !sess->tlsext_tick) ||
-#endif
- (sess->not_resumable)) {
- if (!ssl_get_new_session(s, 0))
- goto err;
- }
- if (s->method->version == DTLS_ANY_VERSION) {
- /* Determine which DTLS version to use */
- int options = s->options;
- /* If DTLS 1.2 disabled correct the version number */
- if (options & SSL_OP_NO_DTLSv1_2) {
- if (tls1_suiteb(s)) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO,
- SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
- goto err;
- }
- /*
- * Disabling all versions is silly: return an error.
- */
- if (options & SSL_OP_NO_DTLSv1) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_WRONG_SSL_VERSION);
- goto err;
- }
- /*
- * Update method so we don't use any DTLS 1.2 features.
- */
- s->method = DTLSv1_client_method();
- s->version = DTLS1_VERSION;
- } else {
- /*
- * We only support one version: update method
- */
- if (options & SSL_OP_NO_DTLSv1)
- s->method = DTLSv1_2_client_method();
- s->version = DTLS1_2_VERSION;
- }
- s->client_version = s->version;
- }
- /* else use the pre-loaded session */
- p = s->s3->client_random;
+ /* Work out what SSL/TLS/DTLS version to use */
+ if (ssl_set_version(s) == 0)
+ goto err;
+ if ((sess == NULL) || (sess->ssl_version != s->version) ||
/*
- * for DTLS if client_random is initialized, reuse it, we are
- * required to use same upon reply to HelloVerify
+ * In the case of EAP-FAST, we can have a pre-shared
+ * "ticket" without a session ID.
*/
- if (SSL_IS_DTLS(s)) {
- size_t idx;
- i = 1;
- for (idx = 0; idx < sizeof(s->s3->client_random); idx++) {
- if (p[idx]) {
- i = 0;
- break;
- }
- }
- } else
- i = 1;
-
- if (i && ssl_fill_hello_random(s, 0, p,
- sizeof(s->s3->client_random)) <= 0)
+ (!sess->session_id_length && !sess->tlsext_tick) ||
+ (sess->not_resumable)) {
+ if (!ssl_get_new_session(s, 0))
goto err;
+ }
+ /* else use the pre-loaded session */
- /* Do the message type and length last */
- d = p = ssl_handshake_start(s);
-
- /*-
- * version indicates the negotiated version: for example from
- * an SSLv2/v3 compatible client hello). The client_version
- * field is the maximum version we permit and it is also
- * used in RSA encrypted premaster secrets. Some servers can
- * choke if we initially report a higher version then
- * renegotiate to a lower one in the premaster secret. This
- * didn't happen with TLS 1.0 as most servers supported it
- * but it can with TLS 1.1 or later if the server only supports
- * 1.0.
- *
- * Possible scenario with previous logic:
- * 1. Client hello indicates TLS 1.2
- * 2. Server hello says TLS 1.0
- * 3. RSA encrypted premaster secret uses 1.2.
- * 4. Handhaked proceeds using TLS 1.0.
- * 5. Server sends hello request to renegotiate.
- * 6. Client hello indicates TLS v1.0 as we now
- * know that is maximum server supports.
- * 7. Server chokes on RSA encrypted premaster secret
- * containing version 1.0.
- *
- * For interoperability it should be OK to always use the
- * maximum version we support in client hello and then rely
- * on the checking of version to ensure the servers isn't
- * being inconsistent: for example initially negotiating with
- * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
- * client_version in client hello and not resetting it to
- * the negotiated version.
- */
- *(p++) = s->client_version >> 8;
- *(p++) = s->client_version & 0xff;
-
- /* Random stuff */
- memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
- p += SSL3_RANDOM_SIZE;
+ p = s->s3->client_random;
- /* Session ID */
- if (s->new_session)
- i = 0;
- else
- i = s->session->session_id_length;
- *(p++) = i;
- if (i != 0) {
- if (i > (int)sizeof(s->session->session_id)) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
+ /*
+ * for DTLS if client_random is initialized, reuse it, we are
+ * required to use same upon reply to HelloVerify
+ */
+ if (SSL_IS_DTLS(s)) {
+ size_t idx;
+ i = 1;
+ for (idx = 0; idx < sizeof(s->s3->client_random); idx++) {
+ if (p[idx]) {
+ i = 0;
+ break;
}
- memcpy(p, s->session->session_id, i);
- p += i;
}
+ } else
+ i = 1;
- /* cookie stuff for DTLS */
- if (SSL_IS_DTLS(s)) {
- if (s->d1->cookie_len > sizeof(s->d1->cookie)) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- *(p++) = s->d1->cookie_len;
- memcpy(p, s->d1->cookie, s->d1->cookie_len);
- p += s->d1->cookie_len;
+ if (i && ssl_fill_hello_random(s, 0, p,
+ sizeof(s->s3->client_random)) <= 0)
+ goto err;
+
+ /* Do the message type and length last */
+ d = p = ssl_handshake_start(s);
+
+ /*-
+ * version indicates the negotiated version: for example from
+ * an SSLv2/v3 compatible client hello). The client_version
+ * field is the maximum version we permit and it is also
+ * used in RSA encrypted premaster secrets. Some servers can
+ * choke if we initially report a higher version then
+ * renegotiate to a lower one in the premaster secret. This
+ * didn't happen with TLS 1.0 as most servers supported it
+ * but it can with TLS 1.1 or later if the server only supports
+ * 1.0.
+ *
+ * Possible scenario with previous logic:
+ * 1. Client hello indicates TLS 1.2
+ * 2. Server hello says TLS 1.0
+ * 3. RSA encrypted premaster secret uses 1.2.
+ * 4. Handhaked proceeds using TLS 1.0.
+ * 5. Server sends hello request to renegotiate.
+ * 6. Client hello indicates TLS v1.0 as we now
+ * know that is maximum server supports.
+ * 7. Server chokes on RSA encrypted premaster secret
+ * containing version 1.0.
+ *
+ * For interoperability it should be OK to always use the
+ * maximum version we support in client hello and then rely
+ * on the checking of version to ensure the servers isn't
+ * being inconsistent: for example initially negotiating with
+ * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
+ * client_version in client hello and not resetting it to
+ * the negotiated version.
+ */
+ *(p++) = s->client_version >> 8;
+ *(p++) = s->client_version & 0xff;
+
+ /* Random stuff */
+ memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
+ p += SSL3_RANDOM_SIZE;
+
+ /* Session ID */
+ if (s->new_session)
+ i = 0;
+ else
+ i = s->session->session_id_length;
+ *(p++) = i;
+ if (i != 0) {
+ if (i > (int)sizeof(s->session->session_id)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
}
+ memcpy(p, s->session->session_id, i);
+ p += i;
+ }
- /* Ciphers supported */
- i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), &(p[2]), 0);
- if (i == 0) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE);
+ /* cookie stuff for DTLS */
+ if (SSL_IS_DTLS(s)) {
+ if (s->d1->cookie_len > sizeof(s->d1->cookie)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
goto err;
}
+ *(p++) = s->d1->cookie_len;
+ memcpy(p, s->d1->cookie, s->d1->cookie_len);
+ p += s->d1->cookie_len;
+ }
+
+ /* Ciphers supported */
+ i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), &(p[2]));
+ if (i == 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE);
+ goto err;
+ }
#ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
- /*
- * Some servers hang if client hello > 256 bytes as hack workaround
- * chop number of supported ciphers to keep it well below this if we
- * use TLS v1.2
- */
- if (TLS1_get_version(s) >= TLS1_2_VERSION
- && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
- i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
+ /*
+ * Some servers hang if client hello > 256 bytes as hack workaround
+ * chop number of supported ciphers to keep it well below this if we
+ * use TLS v1.2
+ */
+ if (TLS1_get_version(s) >= TLS1_2_VERSION
+ && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
+ i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
#endif
- s2n(i, p);
- p += i;
+ s2n(i, p);
+ p += i;
- /* COMPRESSION */
+ /* COMPRESSION */
#ifdef OPENSSL_NO_COMP
- *(p++) = 1;
+ *(p++) = 1;
#else
- if (!ssl_allow_compression(s) || !s->ctx->comp_methods)
- j = 0;
- else
- j = sk_SSL_COMP_num(s->ctx->comp_methods);
- *(p++) = 1 + j;
- for (i = 0; i < j; i++) {
- comp = sk_SSL_COMP_value(s->ctx->comp_methods, i);
- *(p++) = comp->id;
- }
+ if (!ssl_allow_compression(s) || !s->ctx->comp_methods)
+ j = 0;
+ else
+ j = sk_SSL_COMP_num(s->ctx->comp_methods);
+ *(p++) = 1 + j;
+ for (i = 0; i < j; i++) {
+ comp = sk_SSL_COMP_value(s->ctx->comp_methods, i);
+ *(p++) = comp->id;
+ }
#endif
- *(p++) = 0; /* Add the NULL method */
+ *(p++) = 0; /* Add the NULL method */
-#ifndef OPENSSL_NO_TLSEXT
- /* TLS extensions */
- if (ssl_prepare_clienthello_tlsext(s) <= 0) {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_CLIENTHELLO_TLSEXT);
- goto err;
- }
- if ((p =
- ssl_add_clienthello_tlsext(s, p, buf + SSL3_RT_MAX_PLAIN_LENGTH,
- &al)) == NULL) {
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
-#endif
+ /* TLS extensions */
+ if (ssl_prepare_clienthello_tlsext(s) <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, SSL_R_CLIENTHELLO_TLSEXT);
+ goto err;
+ }
+ if ((p =
+ ssl_add_clienthello_tlsext(s, p, buf + SSL3_RT_MAX_PLAIN_LENGTH,
+ &al)) == NULL) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
- l = p - d;
- if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l)) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- s->state = SSL3_ST_CW_CLNT_HELLO_B;
+ l = p - d;
+ if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
}
- /* SSL3_ST_CW_CLNT_HELLO_B */
- return ssl_do_write(s);
+ return 1;
err:
- return (-1);
+ statem_set_error(s);
+ return 0;
}
int ssl3_get_server_hello(SSL *s)
{
- STACK_OF(SSL_CIPHER) *sk;
- const SSL_CIPHER *c;
- CERT *ct = s->cert;
- unsigned char *p, *d;
- int i, al = SSL_AD_INTERNAL_ERROR, ok;
- unsigned int j;
+ int ok, al;
long n;
-#ifndef OPENSSL_NO_COMP
- SSL_COMP *comp;
-#endif
/*
* Hello verify request and/or server hello version may not match so set
* first packet if we're negotiating version.
*/
- if (SSL_IS_DTLS(s))
- s->first_packet = 1;
+ s->first_packet = 1;
n = s->method->ssl_get_message(s,
SSL3_ST_CR_SRVR_HELLO_A,
if (!ok)
return ((int)n);
+ s->first_packet = 0;
if (SSL_IS_DTLS(s)) {
- s->first_packet = 0;
if (s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) {
if (s->d1->send_cookie == 0) {
s->s3->tmp.reuse_message = 1;
goto f_err;
}
- d = p = (unsigned char *)s->init_msg;
- if (s->method->version == DTLS_ANY_VERSION) {
+ return tls_process_server_hello(s, (unsigned long)n);
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ s->state = SSL_ST_ERR;
+ return (-1);
+}
+
+enum MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, unsigned long n)
+{
+ STACK_OF(SSL_CIPHER) *sk;
+ const SSL_CIPHER *c;
+ PACKET pkt, session_id;
+ size_t session_id_len;
+ unsigned char *cipherchars;
+ int i, al = SSL_AD_INTERNAL_ERROR;
+ unsigned int compression;
+#ifndef OPENSSL_NO_COMP
+ SSL_COMP *comp;
+#endif
+
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
+ if (s->method->version == TLS_ANY_VERSION) {
+ unsigned int sversion;
+
+ if (!PACKET_get_net_2(&pkt, &sversion)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+
+#if TLS_MAX_VERSION != TLS1_2_VERSION
+#error Code needs updating for new TLS version
+#endif
+#ifndef OPENSSL_NO_SSL3
+ if ((sversion == SSL3_VERSION) && !(s->options & SSL_OP_NO_SSLv3)) {
+ if (FIPS_mode()) {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
+ SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
+ s->method = SSLv3_client_method();
+ } else
+#endif
+ if ((sversion == TLS1_VERSION) && !(s->options & SSL_OP_NO_TLSv1)) {
+ s->method = TLSv1_client_method();
+ } else if ((sversion == TLS1_1_VERSION) &&
+ !(s->options & SSL_OP_NO_TLSv1_1)) {
+ s->method = TLSv1_1_client_method();
+ } else if ((sversion == TLS1_2_VERSION) &&
+ !(s->options & SSL_OP_NO_TLSv1_2)) {
+ s->method = TLSv1_2_client_method();
+ } else {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL);
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
+ s->session->ssl_version = s->version = s->method->version;
+
+ if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_VERSION_TOO_LOW);
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
+ } else if (s->method->version == DTLS_ANY_VERSION) {
/* Work out correct protocol version to use */
- int hversion = (p[0] << 8) | p[1];
- int options = s->options;
+ unsigned int hversion;
+ int options;
+
+ if (!PACKET_get_net_2(&pkt, &hversion)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+
+ options = s->options;
if (hversion == DTLS1_2_VERSION && !(options & SSL_OP_NO_DTLSv1_2))
s->method = DTLSv1_2_client_method();
else if (tls1_suiteb(s)) {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
s->version = hversion;
al = SSL_AD_PROTOCOL_VERSION;
} else if (hversion == DTLS1_VERSION && !(options & SSL_OP_NO_DTLSv1))
s->method = DTLSv1_client_method();
else {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
s->version = hversion;
al = SSL_AD_PROTOCOL_VERSION;
goto f_err;
}
- s->version = s->method->version;
- }
+ s->session->ssl_version = s->version = s->method->version;
+ } else {
+ unsigned char *vers;
- if ((p[0] != (s->version >> 8)) || (p[1] != (s->version & 0xff))) {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
- s->version = (s->version & 0xff00) | p[1];
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
+ if (!PACKET_get_bytes(&pkt, &vers, 2)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+ if ((vers[0] != (s->version >> 8))
+ || (vers[1] != (s->version & 0xff))) {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
+ s->version = (s->version & 0xff00) | vers[1];
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
}
- p += 2;
/* load the server hello data */
/* load the server random */
- memcpy(s->s3->server_random, p, SSL3_RANDOM_SIZE);
- p += SSL3_RANDOM_SIZE;
+ if (!PACKET_copy_bytes(&pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
s->hit = 0;
- /* get the session-id */
- j = *(p++);
-
- if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) {
+ /* Get the session-id. */
+ if (!PACKET_get_length_prefixed_1(&pkt, &session_id)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+ session_id_len = PACKET_remaining(&session_id);
+ if (session_id_len > sizeof s->session->session_id
+ || session_id_len > SSL3_SESSION_ID_SIZE) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_SSL3_SESSION_ID_TOO_LONG);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_SSL3_SESSION_ID_TOO_LONG);
+ goto f_err;
+ }
+
+ if (!PACKET_get_bytes(&pkt, &cipherchars, TLS_CIPHER_LEN)) {
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ al = SSL_AD_DECODE_ERROR;
goto f_err;
}
-#ifndef OPENSSL_NO_TLSEXT
+
/*
* Check if we can resume the session based on external pre-shared secret.
* EAP-FAST (RFC 4851) supports two types of session resumption.
NULL, &pref_cipher,
s->tls_session_secret_cb_arg)) {
s->session->cipher = pref_cipher ?
- pref_cipher : ssl_get_cipher_by_char(s, p + j);
+ pref_cipher : ssl_get_cipher_by_char(s, cipherchars);
} else {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
}
-#endif /* OPENSSL_NO_TLSEXT */
- if (j != 0 && j == s->session->session_id_length
- && memcmp(p, s->session->session_id, j) == 0) {
+ if (session_id_len != 0 && session_id_len == s->session->session_id_length
+ && memcmp(PACKET_data(&session_id), s->session->session_id,
+ session_id_len) == 0) {
if (s->sid_ctx_length != s->session->sid_ctx_length
|| memcmp(s->session->sid_ctx, s->sid_ctx, s->sid_ctx_length)) {
/* actually a client application bug */
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
goto f_err;
}
goto f_err;
}
}
- s->session->session_id_length = j;
- memcpy(s->session->session_id, p, j); /* j could be 0 */
+
+ s->session->session_id_length = session_id_len;
+ /* session_id_len could be 0 */
+ memcpy(s->session->session_id, PACKET_data(&session_id),
+ session_id_len);
}
- p += j;
- c = ssl_get_cipher_by_char(s, p);
+
+ c = ssl_get_cipher_by_char(s, cipherchars);
if (c == NULL) {
/* unknown cipher */
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_UNKNOWN_CIPHER_RETURNED);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_UNKNOWN_CIPHER_RETURNED);
goto f_err;
}
/* Set version disabled mask now we know version */
if (!SSL_USE_TLS1_2_CIPHERS(s))
- ct->mask_ssl = SSL_TLSV1_2;
+ s->s3->tmp.mask_ssl = SSL_TLSV1_2;
else
- ct->mask_ssl = 0;
+ s->s3->tmp.mask_ssl = 0;
/*
* If it is a disabled cipher we didn't send it in client hello, so
* return an error.
*/
if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_CHECK)) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
goto f_err;
}
- p += ssl_put_cipher_by_char(s, NULL, NULL);
sk = ssl_get_ciphers_by_id(s);
i = sk_SSL_CIPHER_find(sk, c);
if (i < 0) {
/* we did not say we would use this cipher */
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
goto f_err;
}
s->session->cipher_id = s->session->cipher->id;
if (s->hit && (s->session->cipher_id != c->id)) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
goto f_err;
}
* Don't digest cached records if no sigalgs: we may need them for client
* authentication.
*/
- if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s))
+ if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s, 0))
goto f_err;
/* lets get the compression algorithm */
/* COMPRESSION */
+ if (!PACKET_get_1(&pkt, &compression)) {
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
#ifdef OPENSSL_NO_COMP
- if (*(p++) != 0) {
+ if (compression != 0) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
goto f_err;
}
* using compression.
*/
if (s->session->compress_meth != 0) {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_INCONSISTENT_COMPRESSION);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_INCONSISTENT_COMPRESSION);
goto f_err;
}
#else
- j = *(p++);
- if (s->hit && j != s->session->compress_meth) {
+ if (s->hit && compression != s->session->compress_meth) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
goto f_err;
}
- if (j == 0)
+ if (compression == 0)
comp = NULL;
else if (!ssl_allow_compression(s)) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_COMPRESSION_DISABLED);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_COMPRESSION_DISABLED);
goto f_err;
- } else
- comp = ssl3_comp_find(s->ctx->comp_methods, j);
-
- if ((j != 0) && (comp == NULL)) {
+ } else {
+ comp = ssl3_comp_find(s->ctx->comp_methods, compression);
+ }
+
+ if (compression != 0 && comp == NULL) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
goto f_err;
} else {
}
#endif
-#ifndef OPENSSL_NO_TLSEXT
/* TLS extensions */
- if (!ssl_parse_serverhello_tlsext(s, &p, d, n)) {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_PARSE_TLSEXT);
+ if (!ssl_parse_serverhello_tlsext(s, &pkt)) {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_PARSE_TLSEXT);
goto err;
}
-#endif
- if (p != (d + n)) {
+ if (PACKET_remaining(&pkt) != 0) {
/* wrong packet length */
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_BAD_PACKET_LENGTH);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_BAD_PACKET_LENGTH);
goto f_err;
}
- return (1);
+ return MSG_PROCESS_CONTINUE_READING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
err:
- return (-1);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
int ssl3_get_server_certificate(SSL *s)
{
- int al, i, ok, ret = -1;
- unsigned long n, nc, llen, l;
- X509 *x = NULL;
- const unsigned char *q, *p;
- unsigned char *d;
- STACK_OF(X509) *sk = NULL;
- SESS_CERT *sc;
- EVP_PKEY *pkey = NULL;
- int need_cert = 1; /* VRS: 0=> will allow null cert if auth ==
- * KRB5 */
+ long n;
+ int ok, al;
n = s->method->ssl_get_message(s,
SSL3_ST_CR_CERT_A,
if (!ok)
return ((int)n);
- if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
- ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
- (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE))) {
+ if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) {
s->s3->tmp.reuse_message = 1;
return (1);
}
SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, SSL_R_BAD_MESSAGE_TYPE);
goto f_err;
}
- p = d = (unsigned char *)s->init_msg;
+
+ return tls_process_server_certificate(s, (unsigned long)n);
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ s->state = SSL_ST_ERR;
+ return -1;
+}
+
+enum MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, unsigned long n)
+{
+ int al, i, ret = MSG_PROCESS_ERROR, exp_idx;
+ unsigned long cert_list_len, cert_len;
+ X509 *x = NULL;
+ unsigned char *certstart, *certbytes;
+ STACK_OF(X509) *sk = NULL;
+ EVP_PKEY *pkey = NULL;
+ PACKET pkt;
+
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
if ((sk = sk_X509_new_null()) == NULL) {
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
goto err;
}
- n2l3(p, llen);
- if (llen + 3 != n) {
+ if (!PACKET_get_net_3(&pkt, &cert_list_len)
+ || PACKET_remaining(&pkt) != cert_list_len) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, SSL_R_LENGTH_MISMATCH);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- for (nc = 0; nc < llen;) {
- n2l3(p, l);
- if ((l + nc + 3) > llen) {
+ while (PACKET_remaining(&pkt)) {
+ if (!PACKET_get_net_3(&pkt, &cert_len)
+ || !PACKET_get_bytes(&pkt, &certbytes, cert_len)) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_CERT_LENGTH_MISMATCH);
goto f_err;
}
- q = p;
- x = d2i_X509(NULL, &q, l);
+ certstart = certbytes;
+ x = d2i_X509(NULL, (const unsigned char **)&certbytes, cert_len);
if (x == NULL) {
al = SSL_AD_BAD_CERTIFICATE;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_ASN1_LIB);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_ASN1_LIB);
goto f_err;
}
- if (q != (p + l)) {
+ if (certbytes != (certstart + cert_len)) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_CERT_LENGTH_MISMATCH);
goto f_err;
}
if (!sk_X509_push(sk, x)) {
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
goto err;
}
x = NULL;
- nc += l + 3;
- p = q;
}
i = ssl_verify_cert_chain(s, sk);
- if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
-#ifndef OPENSSL_NO_KRB5
- && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
- (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
-#endif /* OPENSSL_NO_KRB5 */
- ) {
+ if (s->verify_mode != SSL_VERIFY_NONE && i <= 0) {
al = ssl_verify_alarm_type(s->verify_result);
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_CERTIFICATE_VERIFY_FAILED);
goto f_err;
}
ERR_clear_error(); /* but we keep s->verify_result */
if (i > 1) {
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, i);
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, i);
al = SSL_AD_HANDSHAKE_FAILURE;
goto f_err;
}
- sc = ssl_sess_cert_new();
- if (sc == NULL)
- goto err;
-
- ssl_sess_cert_free(s->session->sess_cert);
- s->session->sess_cert = sc;
-
- sc->cert_chain = sk;
+ s->session->peer_chain = sk;
/*
* Inconsistency alert: cert_chain does include the peer's certificate,
* which we don't include in s3_srvr.c
pkey = X509_get_pubkey(x);
- /* VRS: allow null cert if auth == KRB5 */
- need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
- (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
- ? 0 : 1;
-
-#ifdef KSSL_DEBUG
- fprintf(stderr, "pkey,x = %p, %p\n", pkey, x);
- fprintf(stderr, "ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x, pkey));
- fprintf(stderr, "cipher, alg, nc = %s, %lx, %lx, %d\n",
- s->s3->tmp.new_cipher->name,
- s->s3->tmp.new_cipher->algorithm_mkey,
- s->s3->tmp.new_cipher->algorithm_auth, need_cert);
-#endif /* KSSL_DEBUG */
-
- if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) {
+ if (pkey == NULL || EVP_PKEY_missing_parameters(pkey)) {
x = NULL;
al = SSL3_AL_FATAL;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
goto f_err;
}
i = ssl_cert_type(x, pkey);
- if (need_cert && i < 0) {
+ if (i < 0) {
x = NULL;
al = SSL3_AL_FATAL;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_UNKNOWN_CERTIFICATE_TYPE);
goto f_err;
}
- if (need_cert) {
- int exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
- if (exp_idx >= 0 && i != exp_idx) {
- x = NULL;
- al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
- SSL_R_WRONG_CERTIFICATE_TYPE);
- goto f_err;
- }
- sc->peer_cert_type = i;
- CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
- /*
- * Why would the following ever happen? We just created sc a couple
- * of lines ago.
- */
- if (sc->peer_pkeys[i].x509 != NULL)
- X509_free(sc->peer_pkeys[i].x509);
- sc->peer_pkeys[i].x509 = x;
- sc->peer_key = &(sc->peer_pkeys[i]);
-
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
- CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
- s->session->peer = x;
- } else {
- sc->peer_cert_type = i;
- sc->peer_key = NULL;
-
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
- s->session->peer = NULL;
+ exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
+ if (exp_idx >= 0 && i != exp_idx) {
+ x = NULL;
+ al = SSL_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
+ SSL_R_WRONG_CERTIFICATE_TYPE);
+ goto f_err;
}
+ s->session->peer_type = i;
+
+ X509_free(s->session->peer);
+ X509_up_ref(x);
+ s->session->peer = x;
s->session->verify_result = s->verify_result;
x = NULL;
- ret = 1;
- if (0) {
+ ret = MSG_PROCESS_CONTINUE_READING;
+ goto done;
+
f_err:
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- }
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
err:
+ statem_set_error(s);
+ done:
EVP_PKEY_free(pkey);
X509_free(x);
sk_X509_pop_free(sk, X509_free);
- return (ret);
+ return ret;
}
int ssl3_get_key_exchange(SSL *s)
+{
+ long n;
+ int ok;
+ long alg_k;
+
+ /*
+ * use same message size as in ssl3_get_certificate_request() as
+ * ServerKeyExchange message may be skipped
+ */
+ n = s->method->ssl_get_message(s,
+ SSL3_ST_CR_KEY_EXCH_A,
+ SSL3_ST_CR_KEY_EXCH_B,
+ -1, s->max_cert_list, &ok);
+ if (!ok)
+ return ((int)n);
+
+ alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
+
+ if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) {
+ /*
+ * Can't skip server key exchange if this is an ephemeral
+ * ciphersuite.
+ */
+ if (alg_k & (SSL_kDHE | SSL_kECDHE | SSL_kDHEPSK | SSL_kECDHEPSK)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ s->s3->tmp.reuse_message = 1;
+ return 1;
+ }
+
+ return tls_process_key_exchange(s, (unsigned long)n);
+}
+
+enum MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, unsigned long n)
{
#ifndef OPENSSL_NO_RSA
unsigned char *q, md_buf[EVP_MAX_MD_SIZE * 2];
#endif
EVP_MD_CTX md_ctx;
- unsigned char *param, *p;
- int al, j, ok;
- long i, param_len, n, alg_k, alg_a;
+ int al, j, verify_ret;
+ long alg_k, alg_a;
EVP_PKEY *pkey = NULL;
const EVP_MD *md = NULL;
#ifndef OPENSSL_NO_RSA
BN_CTX *bn_ctx = NULL;
EC_POINT *srvr_ecpoint = NULL;
int curve_nid = 0;
- int encoded_pt_len = 0;
#endif
+ PACKET pkt, save_param_start, signature;
EVP_MD_CTX_init(&md_ctx);
- /*
- * use same message size as in ssl3_get_certificate_request() as
- * ServerKeyExchange message may be skipped
- */
- n = s->method->ssl_get_message(s,
- SSL3_ST_CR_KEY_EXCH_A,
- SSL3_ST_CR_KEY_EXCH_B,
- -1, s->max_cert_list, &ok);
- if (!ok)
- return ((int)n);
-
alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
- if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) {
- /*
- * Can't skip server key exchange if this is an ephemeral
- * ciphersuite.
- */
- if (alg_k & (SSL_kDHE | SSL_kECDHE)) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
- al = SSL_AD_UNEXPECTED_MESSAGE;
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ al = SSL_AD_INTERNAL_ERROR;
goto f_err;
- }
-#ifndef OPENSSL_NO_PSK
- /*
- * In plain PSK ciphersuite, ServerKeyExchange can be omitted if no
- * identity hint is sent. Set session->sess_cert anyway to avoid
- * problems later.
- */
- if (alg_k & SSL_kPSK) {
- s->session->sess_cert = ssl_sess_cert_new();
- if (s->ctx->psk_identity_hint)
- OPENSSL_free(s->ctx->psk_identity_hint);
- s->ctx->psk_identity_hint = NULL;
- }
-#endif
- s->s3->tmp.reuse_message = 1;
- return (1);
}
+ save_param_start = pkt;
- param = p = (unsigned char *)s->init_msg;
- if (s->session->sess_cert != NULL) {
#ifndef OPENSSL_NO_RSA
- RSA_free(s->session->sess_cert->peer_rsa_tmp);
- s->session->sess_cert->peer_rsa_tmp = NULL;
+ RSA_free(s->s3->peer_rsa_tmp);
+ s->s3->peer_rsa_tmp = NULL;
#endif
#ifndef OPENSSL_NO_DH
- DH_free(s->session->sess_cert->peer_dh_tmp);
- s->session->sess_cert->peer_dh_tmp = NULL;
+ DH_free(s->s3->peer_dh_tmp);
+ s->s3->peer_dh_tmp = NULL;
#endif
#ifndef OPENSSL_NO_EC
- EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
- s->session->sess_cert->peer_ecdh_tmp = NULL;
+ EC_KEY_free(s->s3->peer_ecdh_tmp);
+ s->s3->peer_ecdh_tmp = NULL;
#endif
- } else {
- s->session->sess_cert = ssl_sess_cert_new();
- }
-
- /* Total length of the parameters including the length prefix */
- param_len = 0;
alg_a = s->s3->tmp.new_cipher->algorithm_auth;
al = SSL_AD_DECODE_ERROR;
#ifndef OPENSSL_NO_PSK
- if (alg_k & SSL_kPSK) {
- char tmp_id_hint[PSK_MAX_IDENTITY_LEN + 1];
-
- param_len = 2;
- if (param_len > n) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
+ /* PSK ciphersuites are preceded by an identity hint */
+ if (alg_k & SSL_PSK) {
+ PACKET psk_identity_hint;
+ if (!PACKET_get_length_prefixed_2(&pkt, &psk_identity_hint)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- n2s(p, i);
/*
* Store PSK identity hint for later use, hint is used in
* a PSK identity hint can be as long as the maximum length of a PSK
* identity.
*/
- if (i > PSK_MAX_IDENTITY_LEN) {
+ if (PACKET_remaining(&psk_identity_hint) > PSK_MAX_IDENTITY_LEN) {
al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_DATA_LENGTH_TOO_LONG);
- goto f_err;
- }
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_DATA_LENGTH_TOO_LONG);
goto f_err;
}
- param_len += i;
- /*
- * If received PSK identity hint contains NULL characters, the hint
- * is truncated from the first NULL. p may not be ending with NULL,
- * so create a NULL-terminated string.
- */
- memcpy(tmp_id_hint, p, i);
- memset(tmp_id_hint + i, 0, PSK_MAX_IDENTITY_LEN + 1 - i);
- if (s->ctx->psk_identity_hint != NULL)
- OPENSSL_free(s->ctx->psk_identity_hint);
- s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
- if (s->ctx->psk_identity_hint == NULL) {
- al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ if (!PACKET_strndup(&psk_identity_hint,
+ &s->session->psk_identity_hint)) {
+ al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
+ }
- p += i;
- n -= param_len;
+ /* Nothing else to do for plain PSK or RSAPSK */
+ if (alg_k & (SSL_kPSK | SSL_kRSAPSK)) {
} else
#endif /* !OPENSSL_NO_PSK */
#ifndef OPENSSL_NO_SRP
if (alg_k & SSL_kSRP) {
- param_len = 2;
- if (param_len > n) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_N_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.N = BN_bin2bn(p, i, NULL))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
- goto err;
- }
- p += i;
-
- if (2 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_G_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.g = BN_bin2bn(p, i, NULL))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
- goto err;
- }
- p += i;
-
- if (1 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 1;
-
- i = (unsigned int)(p[0]);
- p++;
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_S_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.s = BN_bin2bn(p, i, NULL))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
- goto err;
- }
- p += i;
-
- if (2 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_B_LENGTH);
+ PACKET prime, generator, salt, server_pub;
+ if (!PACKET_get_length_prefixed_2(&pkt, &prime)
+ || !PACKET_get_length_prefixed_2(&pkt, &generator)
+ || !PACKET_get_length_prefixed_1(&pkt, &salt)
+ || !PACKET_get_length_prefixed_2(&pkt, &server_pub)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- param_len += i;
- if (!(s->srp_ctx.B = BN_bin2bn(p, i, NULL))) {
+ if ((s->srp_ctx.N =
+ BN_bin2bn(PACKET_data(&prime),
+ PACKET_remaining(&prime), NULL)) == NULL
+ || (s->srp_ctx.g =
+ BN_bin2bn(PACKET_data(&generator),
+ PACKET_remaining(&generator), NULL)) == NULL
+ || (s->srp_ctx.s =
+ BN_bin2bn(PACKET_data(&salt),
+ PACKET_remaining(&salt), NULL)) == NULL
+ || (s->srp_ctx.B =
+ BN_bin2bn(PACKET_data(&server_pub),
+ PACKET_remaining(&server_pub), NULL)) == NULL) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
goto err;
}
- p += i;
- n -= param_len;
if (!srp_verify_server_param(s, &al)) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_PARAMETERS);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_SRP_PARAMETERS);
goto f_err;
}
/* We must check if there is a certificate */
-# ifndef OPENSSL_NO_RSA
- if (alg_a & SSL_aRSA)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-# else
- if (0) ;
-# endif
-# ifndef OPENSSL_NO_DSA
- else if (alg_a & SSL_aDSS)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].
- x509);
-# endif
+ if (alg_a & (SSL_aRSA|SSL_aDSS))
+ pkey = X509_get_pubkey(s->session->peer);
} else
#endif /* !OPENSSL_NO_SRP */
#ifndef OPENSSL_NO_RSA
if (alg_k & SSL_kRSA) {
+ PACKET mod, exp;
/* Temporary RSA keys only allowed in export ciphersuites */
if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)) {
al = SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
- goto f_err;
- }
- if ((rsa = RSA_new()) == NULL) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- param_len = 2;
- if (param_len > n) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
- n2s(p, i);
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_MODULUS_LENGTH);
+ if (!PACKET_get_length_prefixed_2(&pkt, &mod)
+ || !PACKET_get_length_prefixed_2(&pkt, &exp)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- param_len += i;
- if (!(rsa->n = BN_bin2bn(p, i, rsa->n))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
+ if ((rsa = RSA_new()) == NULL) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
goto err;
}
- p += i;
-
- if (2 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_E_LENGTH);
- goto f_err;
- }
- param_len += i;
- if (!(rsa->e = BN_bin2bn(p, i, rsa->e))) {
+ if ((rsa->n = BN_bin2bn(PACKET_data(&mod), PACKET_remaining(&mod),
+ rsa->n)) == NULL
+ || (rsa->e = BN_bin2bn(PACKET_data(&exp), PACKET_remaining(&exp),
+ rsa->e)) == NULL) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
goto err;
}
- p += i;
- n -= param_len;
/* this should be because we are using an export cipher */
if (alg_a & SSL_aRSA)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
+ pkey = X509_get_pubkey(s->session->peer);
else {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
goto err;
}
- s->session->sess_cert->peer_rsa_tmp = rsa;
+
+ if (EVP_PKEY_bits(pkey) <= SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
+ goto f_err;
+ }
+
+ s->s3->peer_rsa_tmp = rsa;
rsa = NULL;
}
#else /* OPENSSL_NO_RSA */
if (0) ;
#endif
#ifndef OPENSSL_NO_DH
- else if (alg_k & SSL_kDHE) {
- if ((dh = DH_new()) == NULL) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_DH_LIB);
- goto err;
- }
-
- param_len = 2;
- if (param_len > n) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p, i);
+ else if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) {
+ PACKET prime, generator, pub_key;
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_P_LENGTH);
+ if (!PACKET_get_length_prefixed_2(&pkt, &prime)
+ || !PACKET_get_length_prefixed_2(&pkt, &generator)
+ || !PACKET_get_length_prefixed_2(&pkt, &pub_key)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- param_len += i;
- if (!(dh->p = BN_bin2bn(p, i, NULL))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
+ if ((dh = DH_new()) == NULL) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_DH_LIB);
goto err;
}
- p += i;
-
- if (2 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_G_LENGTH);
- goto f_err;
- }
- param_len += i;
- if (!(dh->g = BN_bin2bn(p, i, NULL))) {
+ if ((dh->p = BN_bin2bn(PACKET_data(&prime),
+ PACKET_remaining(&prime), NULL)) == NULL
+ || (dh->g = BN_bin2bn(PACKET_data(&generator),
+ PACKET_remaining(&generator), NULL)) == NULL
+ || (dh->pub_key =
+ BN_bin2bn(PACKET_data(&pub_key),
+ PACKET_remaining(&pub_key), NULL)) == NULL) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
goto err;
}
- p += i;
-
- if (2 > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
- n2s(p, i);
-
- if (i > n - param_len) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_PUB_KEY_LENGTH);
+ if (BN_is_zero(dh->p) || BN_is_zero(dh->g) || BN_is_zero(dh->pub_key)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_VALUE);
goto f_err;
}
- param_len += i;
-
- if (!(dh->pub_key = BN_bin2bn(p, i, NULL))) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
- goto err;
- }
- p += i;
- n -= param_len;
if (!ssl_security(s, SSL_SECOP_TMP_DH, DH_security_bits(dh), 0, dh)) {
al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_DH_KEY_TOO_SMALL);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_DH_KEY_TOO_SMALL);
goto f_err;
}
-# ifndef OPENSSL_NO_RSA
- if (alg_a & SSL_aRSA)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-# else
- if (0) ;
-# endif
-# ifndef OPENSSL_NO_DSA
- else if (alg_a & SSL_aDSS)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].
- x509);
-# endif
+ if (alg_a & (SSL_aRSA|SSL_aDSS))
+ pkey = X509_get_pubkey(s->session->peer);
/* else anonymous DH, so no certificate or pkey. */
- s->session->sess_cert->peer_dh_tmp = dh;
+ s->s3->peer_dh_tmp = dh;
dh = NULL;
}
#endif /* !OPENSSL_NO_DH */
#ifndef OPENSSL_NO_EC
- else if (alg_k & SSL_kECDHE) {
+ else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) {
EC_GROUP *ngroup;
const EC_GROUP *group;
+ PACKET encoded_pt;
+ unsigned char *ecparams;
if ((ecdh = EC_KEY_new()) == NULL) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
goto err;
}
/*
* Extract elliptic curve parameters and the server's ephemeral ECDH
- * public key. Keep accumulating lengths of various components in
- * param_len and make sure it never exceeds n.
- */
-
- /*
- * XXX: For now we only support named (not generic) curves and the
- * ECParameters in this case is just three bytes. We also need one
- * byte for the length of the encoded point
+ * public key. For now we only support named (not generic) curves and
+ * ECParameters in this case is just three bytes.
*/
- param_len = 4;
- if (param_len > n) {
+ if (!PACKET_get_bytes(&pkt, &ecparams, 3)) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
goto f_err;
}
* Check curve is one of our preferences, if not server has sent an
* invalid curve. ECParameters is 3 bytes.
*/
- if (!tls1_check_curve(s, p, 3)) {
+ if (!tls1_check_curve(s, ecparams, 3)) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_WRONG_CURVE);
goto f_err;
}
- if ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0) {
+ if ((curve_nid = tls1_ec_curve_id2nid(*(ecparams + 2))) == 0) {
al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE,
SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
goto f_err;
}
ngroup = EC_GROUP_new_by_curve_name(curve_nid);
if (ngroup == NULL) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_EC_LIB);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EC_LIB);
goto err;
}
if (EC_KEY_set_group(ecdh, ngroup) == 0) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_EC_LIB);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EC_LIB);
goto err;
}
EC_GROUP_free(ngroup);
if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
(EC_GROUP_get_degree(group) > 163)) {
al = SSL_AD_EXPORT_RESTRICTION;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE,
SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
goto f_err;
}
- p += 3;
-
/* Next, get the encoded ECPoint */
if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
((bn_ctx = BN_CTX_new()) == NULL)) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
goto err;
}
- encoded_pt_len = *p; /* length of encoded point */
- p += 1;
+ if (!PACKET_get_length_prefixed_1(&pkt, &encoded_pt)) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
- if ((encoded_pt_len > n - param_len) ||
- (EC_POINT_oct2point(group, srvr_ecpoint,
- p, encoded_pt_len, bn_ctx) == 0)) {
+ if (EC_POINT_oct2point(group, srvr_ecpoint, PACKET_data(&encoded_pt),
+ PACKET_remaining(&encoded_pt), bn_ctx) == 0) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_ECPOINT);
goto f_err;
}
- param_len += encoded_pt_len;
-
- n -= param_len;
- p += encoded_pt_len;
/*
* The ECC/TLS specification does not mention the use of DSA to sign
if (0) ;
# ifndef OPENSSL_NO_RSA
else if (alg_a & SSL_aRSA)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
+ pkey = X509_get_pubkey(s->session->peer);
# endif
# ifndef OPENSSL_NO_EC
else if (alg_a & SSL_aECDSA)
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
+ pkey = X509_get_pubkey(s->session->peer);
# endif
/* else anonymous ECDH, so no certificate or pkey. */
EC_KEY_set_public_key(ecdh, srvr_ecpoint);
- s->session->sess_cert->peer_ecdh_tmp = ecdh;
+ s->s3->peer_ecdh_tmp = ecdh;
ecdh = NULL;
BN_CTX_free(bn_ctx);
bn_ctx = NULL;
srvr_ecpoint = NULL;
} else if (alg_k) {
al = SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
#endif /* !OPENSSL_NO_EC */
- /* p points to the next byte, there are 'n' bytes left */
-
/* if it was signed, check the signature */
if (pkey != NULL) {
+ PACKET params;
+ /*
+ * |pkt| now points to the beginning of the signature, so the difference
+ * equals the length of the parameters.
+ */
+ if (!PACKET_get_sub_packet(&save_param_start, ¶ms,
+ PACKET_remaining(&save_param_start) -
+ PACKET_remaining(&pkt))) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
if (SSL_USE_SIGALGS(s)) {
+ unsigned char *sigalgs;
int rv;
- if (2 > n) {
+ if (!PACKET_get_bytes(&pkt, &sigalgs, 2)) {
SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
goto f_err;
}
- rv = tls12_check_peer_sigalg(&md, s, p, pkey);
+ rv = tls12_check_peer_sigalg(&md, s, sigalgs, pkey);
if (rv == -1)
goto err;
else if (rv == 0) {
#ifdef SSL_DEBUG
fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
#endif
- p += 2;
- n -= 2;
- } else
+ } else {
md = EVP_sha1();
+ }
- if (2 > n) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
+ if (!PACKET_get_length_prefixed_2(&pkt, &signature)
+ || PACKET_remaining(&pkt) != 0) {
+ SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- n2s(p, i);
- n -= 2;
j = EVP_PKEY_size(pkey);
+ if (j < 0) {
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
/*
- * Check signature length. If n is 0 then signature is empty
+ * Check signature length
*/
- if ((i != n) || (n > j) || (n <= 0)) {
+ if (PACKET_remaining(&signature) > (size_t)j) {
/* wrong packet length */
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_WRONG_SIGNATURE_LENGTH);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_WRONG_SIGNATURE_LENGTH);
goto f_err;
}
#ifndef OPENSSL_NO_RSA
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&md_ctx, param, param_len);
+ EVP_DigestUpdate(&md_ctx, PACKET_data(¶ms),
+ PACKET_remaining(¶ms));
EVP_DigestFinal_ex(&md_ctx, q, &size);
q += size;
j += size;
}
- i = RSA_verify(NID_md5_sha1, md_buf, j, p, n, pkey->pkey.rsa);
- if (i < 0) {
+ verify_ret =
+ RSA_verify(NID_md5_sha1, md_buf, j, PACKET_data(&signature),
+ PACKET_remaining(&signature), pkey->pkey.rsa);
+ if (verify_ret < 0) {
al = SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_DECRYPT);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_RSA_DECRYPT);
goto f_err;
}
- if (i == 0) {
+ if (verify_ret == 0) {
/* bad signature */
al = SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
goto f_err;
}
} else
SSL3_RANDOM_SIZE);
EVP_VerifyUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
- EVP_VerifyUpdate(&md_ctx, param, param_len);
- if (EVP_VerifyFinal(&md_ctx, p, (int)n, pkey) <= 0) {
+ EVP_VerifyUpdate(&md_ctx, PACKET_data(¶ms),
+ PACKET_remaining(¶ms));
+ if (EVP_VerifyFinal(&md_ctx, PACKET_data(&signature),
+ PACKET_remaining(&signature), pkey) <= 0) {
/* bad signature */
al = SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
goto f_err;
}
}
} else {
- /* aNULL, aSRP or kPSK do not need public keys */
- if (!(alg_a & (SSL_aNULL | SSL_aSRP)) && !(alg_k & SSL_kPSK)) {
+ /* aNULL, aSRP or PSK do not need public keys */
+ if (!(alg_a & (SSL_aNULL | SSL_aSRP)) && !(alg_k & SSL_PSK)) {
/* Might be wrong key type, check it */
if (ssl3_check_cert_and_algorithm(s))
/* Otherwise this shouldn't happen */
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
goto err;
}
/* still data left over */
- if (n != 0) {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_EXTRA_DATA_IN_MESSAGE);
+ if (PACKET_remaining(&pkt) != 0) {
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_EXTRA_DATA_IN_MESSAGE);
goto f_err;
}
}
EVP_PKEY_free(pkey);
EVP_MD_CTX_cleanup(&md_ctx);
- return (1);
+ return MSG_PROCESS_CONTINUE_READING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
err:
EC_KEY_free(ecdh);
#endif
EVP_MD_CTX_cleanup(&md_ctx);
- return (-1);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
int ssl3_get_certificate_request(SSL *s)
{
- int ok, ret = 0;
- unsigned long n, nc, l;
- unsigned int llen, ctype_num, i;
- X509_NAME *xn = NULL;
- const unsigned char *p, *q;
- unsigned char *d;
- STACK_OF(X509_NAME) *ca_sk = NULL;
+ long n;
+ int ok;
n = s->method->ssl_get_message(s,
SSL3_ST_CR_CERT_REQ_A,
* If we get here we don't need any cached handshake records as we
* wont be doing client auth.
*/
- if (s->s3->handshake_buffer) {
- if (!ssl3_digest_cached_records(s))
- goto err;
- }
+ if (!ssl3_digest_cached_records(s, 0))
+ goto err;
return (1);
}
}
}
- p = d = (unsigned char *)s->init_msg;
+ return tls_process_certificate_request(s, (unsigned long)n);
+ err:
+ s->state = SSL_ST_ERR;
+ return -1;
+}
+
+
+enum MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, unsigned long n)
+{
+ int ret = MSG_PROCESS_ERROR;
+ unsigned int list_len, ctype_num, i, name_len;
+ X509_NAME *xn = NULL;
+ unsigned char *data;
+ unsigned char *namestart, *namebytes;
+ STACK_OF(X509_NAME) *ca_sk = NULL;
+ PACKET pkt;
+
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
if ((ca_sk = sk_X509_NAME_new(ca_dn_cmp)) == NULL) {
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
goto err;
}
/* get the certificate types */
- ctype_num = *(p++);
- if (s->cert->ctypes) {
- OPENSSL_free(s->cert->ctypes);
- s->cert->ctypes = NULL;
+ if (!PACKET_get_1(&pkt, &ctype_num)
+ || !PACKET_get_bytes(&pkt, &data, ctype_num)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, SSL_R_LENGTH_MISMATCH);
+ goto err;
}
+ OPENSSL_free(s->cert->ctypes);
+ s->cert->ctypes = NULL;
if (ctype_num > SSL3_CT_NUMBER) {
/* If we exceed static buffer copy all to cert structure */
s->cert->ctypes = OPENSSL_malloc(ctype_num);
if (s->cert->ctypes == NULL) {
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
goto err;
}
- memcpy(s->cert->ctypes, p, ctype_num);
+ memcpy(s->cert->ctypes, data, ctype_num);
s->cert->ctype_num = (size_t)ctype_num;
ctype_num = SSL3_CT_NUMBER;
}
for (i = 0; i < ctype_num; i++)
- s->s3->tmp.ctype[i] = p[i];
- p += p[-1];
+ s->s3->tmp.ctype[i] = data[i];
+
if (SSL_USE_SIGALGS(s)) {
- n2s(p, llen);
- /*
- * Check we have enough room for signature algorithms and following
- * length value.
- */
- if ((unsigned long)(p - d + llen + 2) > n) {
+ if (!PACKET_get_net_2(&pkt, &list_len)
+ || !PACKET_get_bytes(&pkt, &data, list_len)) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
- SSL_R_DATA_LENGTH_TOO_LONG);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST,
+ SSL_R_LENGTH_MISMATCH);
goto err;
}
+
/* Clear certificate digests and validity flags */
for (i = 0; i < SSL_PKEY_NUM; i++) {
- s->cert->pkeys[i].digest = NULL;
- s->cert->pkeys[i].valid_flags = 0;
+ s->s3->tmp.md[i] = NULL;
+ s->s3->tmp.valid_flags[i] = 0;
}
- if ((llen & 1) || !tls1_save_sigalgs(s, p, llen)) {
+ if ((list_len & 1) || !tls1_save_sigalgs(s, data, list_len)) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST,
SSL_R_SIGNATURE_ALGORITHMS_ERROR);
goto err;
}
if (!tls1_process_sigalgs(s)) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
goto err;
}
- p += llen;
}
/* get the CA RDNs */
- n2s(p, llen);
-
- if ((unsigned long)(p - d + llen) != n) {
+ if (!PACKET_get_net_2(&pkt, &list_len)
+ || PACKET_remaining(&pkt) != list_len) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, SSL_R_LENGTH_MISMATCH);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, SSL_R_LENGTH_MISMATCH);
goto err;
}
- for (nc = 0; nc < llen;) {
- n2s(p, l);
- if ((l + nc + 2) > llen) {
+ while (PACKET_remaining(&pkt)) {
+ if (!PACKET_get_net_2(&pkt, &name_len)
+ || !PACKET_get_bytes(&pkt, &namebytes, name_len)) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, SSL_R_CA_DN_TOO_LONG);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST,
+ SSL_R_LENGTH_MISMATCH);
goto err;
}
- q = p;
+ namestart = namebytes;
- if ((xn = d2i_X509_NAME(NULL, &q, l)) == NULL) {
+ if ((xn = d2i_X509_NAME(NULL, (const unsigned char **)&namebytes,
+ name_len)) == NULL) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_ASN1_LIB);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_ASN1_LIB);
goto err;
}
- if (q != (p + l)) {
+ if (namebytes != (namestart + name_len)) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST,
SSL_R_CA_DN_LENGTH_MISMATCH);
goto err;
}
if (!sk_X509_NAME_push(ca_sk, xn)) {
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
goto err;
}
-
- p += l;
- nc += l + 2;
}
/* we should setup a certificate to return.... */
s->s3->tmp.cert_req = 1;
s->s3->tmp.ctype_num = ctype_num;
- if (s->s3->tmp.ca_names != NULL)
- sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
+ sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
s->s3->tmp.ca_names = ca_sk;
ca_sk = NULL;
- ret = 1;
+ ret = MSG_PROCESS_CONTINUE_READING;
+ goto done;
err:
- if (ca_sk != NULL)
- sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
- return (ret);
+ statem_set_error(s);
+ done:
+ sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
+ return ret;
}
static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
return (X509_NAME_cmp(*a, *b));
}
-#ifndef OPENSSL_NO_TLSEXT
int ssl3_get_new_session_ticket(SSL *s)
{
- int ok, al, ret = 0, ticklen;
long n;
- const unsigned char *p;
- unsigned char *d;
+ int ok;
n = s->method->ssl_get_message(s,
SSL3_ST_CR_SESSION_TICKET_A,
if (!ok)
return ((int)n);
- if (n < 6) {
- /* need at least ticket_lifetime_hint + ticket length */
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
+ return tls_process_new_session_ticket(s, (unsigned long)n);
+}
+
+enum MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, unsigned long n)
+{
+ int al;
+ unsigned int ticklen;
+ unsigned long ticket_lifetime_hint;
+ PACKET pkt;
+
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_INTERNAL_ERROR);
goto f_err;
}
- p = d = (unsigned char *)s->init_msg;
- n2l(p, s->session->tlsext_tick_lifetime_hint);
- n2s(p, ticklen);
- /* ticket_lifetime_hint + ticket_length + ticket */
- if (ticklen + 6 != n) {
+ if (!PACKET_get_net_4(&pkt, &ticket_lifetime_hint)
+ || !PACKET_get_net_2(&pkt, &ticklen)
+ || PACKET_remaining(&pkt) != ticklen) {
al = SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- if (s->session->tlsext_tick) {
- OPENSSL_free(s->session->tlsext_tick);
- s->session->tlsext_ticklen = 0;
+
+ /* Server is allowed to change its mind and send an empty ticket. */
+ if (ticklen == 0)
+ return 1;
+
+ if (s->session->session_id_length > 0) {
+ int i = s->session_ctx->session_cache_mode;
+ SSL_SESSION *new_sess;
+ /*
+ * We reused an existing session, so we need to replace it with a new
+ * one
+ */
+ if (i & SSL_SESS_CACHE_CLIENT) {
+ /*
+ * Remove the old session from the cache
+ */
+ if (i & SSL_SESS_CACHE_NO_INTERNAL_STORE) {
+ if (s->session_ctx->remove_session_cb != NULL)
+ s->session_ctx->remove_session_cb(s->session_ctx,
+ s->session);
+ } else {
+ /* We carry on if this fails */
+ SSL_CTX_remove_session(s->session_ctx, s->session);
+ }
+ }
+
+ if ((new_sess = ssl_session_dup(s->session, 0)) == 0) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
+ goto f_err;
+ }
+
+ SSL_SESSION_free(s->session);
+ s->session = new_sess;
}
+
+ OPENSSL_free(s->session->tlsext_tick);
+ s->session->tlsext_ticklen = 0;
+
s->session->tlsext_tick = OPENSSL_malloc(ticklen);
if (!s->session->tlsext_tick) {
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
goto err;
}
- memcpy(s->session->tlsext_tick, p, ticklen);
+ if (!PACKET_copy_bytes(&pkt, s->session->tlsext_tick, ticklen)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
+
+ s->session->tlsext_tick_lifetime_hint = ticket_lifetime_hint;
s->session->tlsext_ticklen = ticklen;
/*
* There are two ways to detect a resumed ticket session. One is to set
* elsewhere in OpenSSL. The session ID is set to the SHA256 (or SHA1 is
* SHA256 is disabled) hash of the ticket.
*/
- EVP_Digest(p, ticklen,
+ EVP_Digest(s->session->tlsext_tick, ticklen,
s->session->session_id, &s->session->session_id_length,
EVP_sha256(), NULL);
- ret = 1;
- return (ret);
+ return MSG_PROCESS_CONTINUE_READING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
err:
- return (-1);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
int ssl3_get_cert_status(SSL *s)
{
- int ok, al;
- unsigned long resplen, n;
- const unsigned char *p;
+ long n;
+ int ok;
n = s->method->ssl_get_message(s,
SSL3_ST_CR_CERT_STATUS_A,
if (!ok)
return ((int)n);
- if (n < 4) {
- /* need at least status type + length */
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
+
+ return tls_process_cert_status(s, (unsigned long)n);
+}
+
+enum MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, unsigned long n)
+{
+ int al;
+ unsigned long resplen;
+ unsigned int type;
+ PACKET pkt;
+
+ if (!PACKET_buf_init(&pkt, s->init_msg, n)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, ERR_R_INTERNAL_ERROR);
goto f_err;
}
- p = (unsigned char *)s->init_msg;
- if (*p++ != TLSEXT_STATUSTYPE_ocsp) {
+ if (!PACKET_get_1(&pkt, &type)
+ || type != TLSEXT_STATUSTYPE_ocsp) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_UNSUPPORTED_STATUS_TYPE);
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, SSL_R_UNSUPPORTED_STATUS_TYPE);
goto f_err;
}
- n2l3(p, resplen);
- if (resplen + 4 != n) {
+ if (!PACKET_get_net_3(&pkt, &resplen)
+ || PACKET_remaining(&pkt) != resplen) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- if (s->tlsext_ocsp_resp)
- OPENSSL_free(s->tlsext_ocsp_resp);
- s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
+ OPENSSL_free(s->tlsext_ocsp_resp);
+ s->tlsext_ocsp_resp = OPENSSL_malloc(resplen);
if (!s->tlsext_ocsp_resp) {
al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, ERR_R_MALLOC_FAILURE);
+ goto f_err;
+ }
+ if (!PACKET_copy_bytes(&pkt, s->tlsext_ocsp_resp, resplen)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
s->tlsext_ocsp_resplen = resplen;
ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
if (ret == 0) {
al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_INVALID_STATUS_RESPONSE);
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, SSL_R_INVALID_STATUS_RESPONSE);
goto f_err;
}
if (ret < 0) {
al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS, ERR_R_MALLOC_FAILURE);
goto f_err;
}
}
- return 1;
+ return MSG_PROCESS_CONTINUE_READING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
- return (-1);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
-#endif
int ssl3_get_server_done(SSL *s)
{
- int ok, ret = 0;
long n;
+ int ok;
/* Second to last param should be very small, like 0 :-) */
n = s->method->ssl_get_message(s,
if (!ok)
return ((int)n);
+
+ return tls_process_server_done(s, (unsigned long)n);
+}
+
+enum MSG_PROCESS_RETURN tls_process_server_done(SSL *s, unsigned long n)
+{
if (n > 0) {
/* should contain no data */
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_SERVER_DONE, SSL_R_LENGTH_MISMATCH);
- return -1;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_DONE, SSL_R_LENGTH_MISMATCH);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
- ret = 1;
- return (ret);
+
+#ifndef OPENSSL_NO_SRP
+ if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
+ if (SRP_Calc_A_param(s) <= 0) {
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_DONE, SSL_R_SRP_A_CALC);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
+ }
+ }
+#endif
+
+ return MSG_PROCESS_FINISHED_READING;
}
int ssl3_send_client_key_exchange(SSL *s)
+{
+ int n;
+
+ if (s->state == SSL3_ST_CW_KEY_EXCH_A) {
+ if(tls_construct_client_key_exchange(s) == 0)
+ goto err;
+
+ s->state = SSL3_ST_CW_KEY_EXCH_B;
+ }
+
+ /* SSL3_ST_CW_KEY_EXCH_B */
+ n = ssl_do_write(s);
+
+ if (n > 0) {
+ if (tls_client_key_exchange_post_work(s) == 0)
+ goto err;
+ }
+
+ return n;
+ err:
+ s->state = SSL_ST_ERR;
+ return -1;
+
+}
+
+int tls_construct_client_key_exchange(SSL *s)
{
unsigned char *p;
int n;
+#ifndef OPENSSL_NO_PSK
+ size_t pskhdrlen = 0;
+#endif
unsigned long alg_k;
#ifndef OPENSSL_NO_RSA
unsigned char *q;
EVP_PKEY *pkey = NULL;
#endif
-#ifndef OPENSSL_NO_KRB5
- KSSL_ERR kssl_err;
-#endif /* OPENSSL_NO_KRB5 */
#ifndef OPENSSL_NO_EC
EC_KEY *clnt_ecdh = NULL;
const EC_POINT *srvr_ecpoint = NULL;
#endif
unsigned char *pms = NULL;
size_t pmslen = 0;
+ alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
- if (s->state == SSL3_ST_CW_KEY_EXCH_A) {
- p = ssl_handshake_start(s);
+ p = ssl_handshake_start(s);
- alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
- /* Fool emacs indentation */
- if (0) {
+#ifndef OPENSSL_NO_PSK
+ if (alg_k & SSL_PSK) {
+ int psk_err = 1;
+ /*
+ * The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes to return a
+ * \0-terminated identity. The last byte is for us for simulating
+ * strnlen.
+ */
+ char identity[PSK_MAX_IDENTITY_LEN + 1];
+ size_t identitylen;
+ unsigned char psk[PSK_MAX_PSK_LEN];
+ size_t psklen;
+
+ if (s->psk_client_callback == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_PSK_NO_CLIENT_CB);
+ goto err;
}
-#ifndef OPENSSL_NO_RSA
- else if (alg_k & SSL_kRSA) {
- RSA *rsa;
- pmslen = SSL_MAX_MASTER_KEY_LENGTH;
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
-
- if (s->session->sess_cert == NULL) {
- /*
- * We should always have a server certificate with SSL_kRSA.
- */
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- if (s->session->sess_cert->peer_rsa_tmp != NULL)
- rsa = s->session->sess_cert->peer_rsa_tmp;
- else {
- pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].
- x509);
- if ((pkey == NULL) || (pkey->type != EVP_PKEY_RSA)
- || (pkey->pkey.rsa == NULL)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- rsa = pkey->pkey.rsa;
- EVP_PKEY_free(pkey);
- }
- pms[0] = s->client_version >> 8;
- pms[1] = s->client_version & 0xff;
- if (RAND_bytes(pms + 2, pmslen - 2) <= 0)
- goto err;
+ memset(identity, 0, sizeof(identity));
- q = p;
- /* Fix buf for TLS and beyond */
- if (s->version > SSL3_VERSION)
- p += 2;
- n = RSA_public_encrypt(pmslen, pms, p, rsa, RSA_PKCS1_PADDING);
-# ifdef PKCS1_CHECK
- if (s->options & SSL_OP_PKCS1_CHECK_1)
- p[1]++;
- if (s->options & SSL_OP_PKCS1_CHECK_2)
- tmp_buf[0] = 0x70;
-# endif
- if (n <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_BAD_RSA_ENCRYPT);
- goto err;
- }
+ psklen = s->psk_client_callback(s, s->session->psk_identity_hint,
+ identity, sizeof(identity) - 1,
+ psk, sizeof(psk));
- /* Fix buf for TLS and beyond */
- if (s->version > SSL3_VERSION) {
- s2n(n, q);
- n += 2;
- }
+ if (psklen > PSK_MAX_PSK_LEN) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto psk_err;
+ } else if (psklen == 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_PSK_IDENTITY_NOT_FOUND);
+ goto psk_err;
}
-#endif
-#ifndef OPENSSL_NO_KRB5
- else if (alg_k & SSL_kKRB5) {
- krb5_error_code krb5rc;
- KSSL_CTX *kssl_ctx = s->kssl_ctx;
- /* krb5_data krb5_ap_req; */
- krb5_data *enc_ticket;
- krb5_data authenticator, *authp = NULL;
- EVP_CIPHER_CTX ciph_ctx;
- const EVP_CIPHER *enc = NULL;
- unsigned char iv[EVP_MAX_IV_LENGTH];
- unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
- unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH + EVP_MAX_IV_LENGTH];
- int padl, outl = sizeof(epms);
-
- EVP_CIPHER_CTX_init(&ciph_ctx);
-
-# ifdef KSSL_DEBUG
- fprintf(stderr, "ssl3_send_client_key_exchange(%lx & %lx)\n",
- alg_k, SSL_kKRB5);
-# endif /* KSSL_DEBUG */
-
- authp = NULL;
-# ifdef KRB5SENDAUTH
- if (KRB5SENDAUTH)
- authp = &authenticator;
-# endif /* KRB5SENDAUTH */
-
- krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, &kssl_err);
- enc = kssl_map_enc(kssl_ctx->enctype);
- if (enc == NULL)
- goto err;
-# ifdef KSSL_DEBUG
- {
- fprintf(stderr, "kssl_cget_tkt rtn %d\n", krb5rc);
- if (krb5rc && kssl_err.text)
- fprintf(stderr, "kssl_cget_tkt kssl_err=%s\n",
- kssl_err.text);
- }
-# endif /* KSSL_DEBUG */
- if (krb5rc) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, kssl_err.reason);
- goto err;
- }
+ OPENSSL_free(s->s3->tmp.psk);
+ s->s3->tmp.psk = BUF_memdup(psk, psklen);
+ OPENSSL_cleanse(psk, psklen);
- /*-
- * 20010406 VRS - Earlier versions used KRB5 AP_REQ
- * in place of RFC 2712 KerberosWrapper, as in:
- *
- * Send ticket (copy to *p, set n = length)
- * n = krb5_ap_req.length;
- * memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
- * if (krb5_ap_req.data)
- * kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
- *
- * Now using real RFC 2712 KerberosWrapper
- * (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
- * Note: 2712 "opaque" types are here replaced
- * with a 2-byte length followed by the value.
- * Example:
- * KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
- * Where "xx xx" = length bytes. Shown here with
- * optional authenticator omitted.
- */
+ if (s->s3->tmp.psk == NULL) {
+ OPENSSL_cleanse(identity, sizeof(identity));
+ goto memerr;
+ }
- /* KerberosWrapper.Ticket */
- s2n(enc_ticket->length, p);
- memcpy(p, enc_ticket->data, enc_ticket->length);
- p += enc_ticket->length;
- n = enc_ticket->length + 2;
-
- /* KerberosWrapper.Authenticator */
- if (authp && authp->length) {
- s2n(authp->length, p);
- memcpy(p, authp->data, authp->length);
- p += authp->length;
- n += authp->length + 2;
-
- free(authp->data);
- authp->data = NULL;
- authp->length = 0;
- } else {
- s2n(0, p); /* null authenticator length */
- n += 2;
- }
+ s->s3->tmp.psklen = psklen;
- pmslen = SSL_MAX_MASTER_KEY_LENGTH;
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
+ identitylen = strlen(identity);
+ if (identitylen > PSK_MAX_IDENTITY_LEN) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto psk_err;
+ }
+ OPENSSL_free(s->session->psk_identity);
+ s->session->psk_identity = BUF_strdup(identity);
+ if (s->session->psk_identity == NULL) {
+ OPENSSL_cleanse(identity, sizeof(identity));
+ goto memerr;
+ }
- pms[0] = s->client_version >> 8;
- pms[1] = s->client_version & 0xff;
- if (RAND_bytes(pms + 2, pmslen - 2) <= 0)
- goto err;
+ s2n(identitylen, p);
+ memcpy(p, identity, identitylen);
+ pskhdrlen = 2 + identitylen;
+ p += identitylen;
+ psk_err = 0;
+psk_err:
+ OPENSSL_cleanse(identity, sizeof(identity));
+ if (psk_err != 0) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ goto err;
+ }
+ }
+ if (alg_k & SSL_kPSK) {
+ n = 0;
+ } else
+#endif
- /*-
- * 20010420 VRS. Tried it this way; failed.
- * EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
- * EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
- * kssl_ctx->length);
- * EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
+ /* Fool emacs indentation */
+ if (0) {
+ }
+#ifndef OPENSSL_NO_RSA
+ else if (alg_k & (SSL_kRSA | SSL_kRSAPSK)) {
+ RSA *rsa;
+ pmslen = SSL_MAX_MASTER_KEY_LENGTH;
+ pms = OPENSSL_malloc(pmslen);
+ if (!pms)
+ goto memerr;
+
+ if (s->session->peer == NULL) {
+ /*
+ * We should always have a server certificate with SSL_kRSA.
*/
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
- memset(iv, 0, sizeof iv); /* per RFC 1510 */
- EVP_EncryptInit_ex(&ciph_ctx, enc, NULL, kssl_ctx->key, iv);
- EVP_EncryptUpdate(&ciph_ctx, epms, &outl, pms, pmslen);
- EVP_EncryptFinal_ex(&ciph_ctx, &(epms[outl]), &padl);
- outl += padl;
- if (outl > (int)sizeof epms) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
+ if (s->s3->peer_rsa_tmp != NULL)
+ rsa = s->s3->peer_rsa_tmp;
+ else {
+ pkey = X509_get_pubkey(s->session->peer);
+ if ((pkey == NULL) || (pkey->type != EVP_PKEY_RSA)
+ || (pkey->pkey.rsa == NULL)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
+ EVP_PKEY_free(pkey);
goto err;
}
- EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+ rsa = pkey->pkey.rsa;
+ EVP_PKEY_free(pkey);
+ }
+
+ pms[0] = s->client_version >> 8;
+ pms[1] = s->client_version & 0xff;
+ if (RAND_bytes(pms + 2, pmslen - 2) <= 0)
+ goto err;
+
+ q = p;
+ /* Fix buf for TLS and beyond */
+ if (s->version > SSL3_VERSION)
+ p += 2;
+ n = RSA_public_encrypt(pmslen, pms, p, rsa, RSA_PKCS1_PADDING);
+# ifdef PKCS1_CHECK
+ if (s->options & SSL_OP_PKCS1_CHECK_1)
+ p[1]++;
+ if (s->options & SSL_OP_PKCS1_CHECK_2)
+ tmp_buf[0] = 0x70;
+# endif
+ if (n <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_BAD_RSA_ENCRYPT);
+ goto err;
+ }
- /* KerberosWrapper.EncryptedPreMasterSecret */
- s2n(outl, p);
- memcpy(p, epms, outl);
- p += outl;
- n += outl + 2;
- OPENSSL_cleanse(epms, outl);
+ /* Fix buf for TLS and beyond */
+ if (s->version > SSL3_VERSION) {
+ s2n(n, q);
+ n += 2;
}
+ }
#endif
#ifndef OPENSSL_NO_DH
- else if (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd)) {
- DH *dh_srvr, *dh_clnt;
- SESS_CERT *scert = s->session->sess_cert;
-
- if (scert == NULL) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_UNEXPECTED_MESSAGE);
+ else if (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd | SSL_kDHEPSK)) {
+ DH *dh_srvr, *dh_clnt;
+ if (s->s3->peer_dh_tmp != NULL)
+ dh_srvr = s->s3->peer_dh_tmp;
+ else {
+ /* we get them from the cert */
+ EVP_PKEY *spkey = NULL;
+ dh_srvr = NULL;
+ spkey = X509_get_pubkey(s->session->peer);
+ if (spkey) {
+ dh_srvr = EVP_PKEY_get1_DH(spkey);
+ EVP_PKEY_free(spkey);
+ }
+ if (dh_srvr == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
goto err;
}
-
- if (scert->peer_dh_tmp != NULL)
- dh_srvr = scert->peer_dh_tmp;
- else {
- /* we get them from the cert */
- int idx = scert->peer_cert_type;
- EVP_PKEY *spkey = NULL;
- dh_srvr = NULL;
- if (idx >= 0)
- spkey = X509_get_pubkey(scert->peer_pkeys[idx].x509);
- if (spkey) {
- dh_srvr = EVP_PKEY_get1_DH(spkey);
- EVP_PKEY_free(spkey);
- }
- if (dh_srvr == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
+ }
+ if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) {
+ /* Use client certificate key */
+ EVP_PKEY *clkey = s->cert->key->privatekey;
+ dh_clnt = NULL;
+ if (clkey)
+ dh_clnt = EVP_PKEY_get1_DH(clkey);
+ if (dh_clnt == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
}
- if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) {
- /* Use client certificate key */
- EVP_PKEY *clkey = s->cert->key->privatekey;
- dh_clnt = NULL;
- if (clkey)
- dh_clnt = EVP_PKEY_get1_DH(clkey);
- if (dh_clnt == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- } else {
- /* generate a new random key */
- if ((dh_clnt = DHparams_dup(dh_srvr)) == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
- goto err;
- }
- if (!DH_generate_key(dh_clnt)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
- DH_free(dh_clnt);
- goto err;
- }
+ } else {
+ /* generate a new random key */
+ if ((dh_clnt = DHparams_dup(dh_srvr)) == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
+ goto err;
}
-
- pmslen = DH_size(dh_clnt);
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
-
- /*
- * use the 'p' output buffer for the DH key, but make sure to
- * clear it out afterwards
- */
-
- n = DH_compute_key(pms, dh_srvr->pub_key, dh_clnt);
- if (scert->peer_dh_tmp == NULL)
- DH_free(dh_srvr);
-
- if (n <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
+ if (!DH_generate_key(dh_clnt)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
DH_free(dh_clnt);
goto err;
}
- pmslen = n;
-
- if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
- n = 0;
- else {
- /* send off the data */
- n = BN_num_bytes(dh_clnt->pub_key);
- s2n(n, p);
- BN_bn2bin(dh_clnt->pub_key, p);
- n += 2;
- }
+ }
+
+ pmslen = DH_size(dh_clnt);
+ pms = OPENSSL_malloc(pmslen);
+ if (!pms)
+ goto memerr;
+
+ /*
+ * use the 'p' output buffer for the DH key, but make sure to
+ * clear it out afterwards
+ */
+ n = DH_compute_key(pms, dh_srvr->pub_key, dh_clnt);
+ if (s->s3->peer_dh_tmp == NULL)
+ DH_free(dh_srvr);
+
+ if (n <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
DH_free(dh_clnt);
+ goto err;
+ }
+ pmslen = n;
- /* perhaps clean things up a bit EAY EAY EAY EAY */
+ if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
+ n = 0;
+ else {
+ /* send off the data */
+ n = BN_num_bytes(dh_clnt->pub_key);
+ s2n(n, p);
+ BN_bn2bin(dh_clnt->pub_key, p);
+ n += 2;
}
+
+ DH_free(dh_clnt);
+ }
#endif
#ifndef OPENSSL_NO_EC
- else if (alg_k & (SSL_kECDHE | SSL_kECDHr | SSL_kECDHe)) {
- const EC_GROUP *srvr_group = NULL;
- EC_KEY *tkey;
- int ecdh_clnt_cert = 0;
- int field_size = 0;
-
- if (s->session->sess_cert == NULL) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_UNEXPECTED_MESSAGE);
- goto err;
- }
-
- /*
- * Did we send out the client's ECDH share for use in premaster
- * computation as part of client certificate? If so, set
- * ecdh_clnt_cert to 1.
+ else if (alg_k & (SSL_kECDHE | SSL_kECDHr | SSL_kECDHe | SSL_kECDHEPSK)) {
+ const EC_GROUP *srvr_group = NULL;
+ EC_KEY *tkey;
+ int ecdh_clnt_cert = 0;
+ int field_size = 0;
+ /*
+ * Did we send out the client's ECDH share for use in premaster
+ * computation as part of client certificate? If so, set
+ * ecdh_clnt_cert to 1.
+ */
+ if ((alg_k & (SSL_kECDHr | SSL_kECDHe)) && (s->cert != NULL)) {
+ /*-
+ * XXX: For now, we do not support client
+ * authentication using ECDH certificates.
+ * To add such support, one needs to add
+ * code that checks for appropriate
+ * conditions and sets ecdh_clnt_cert to 1.
+ * For example, the cert have an ECC
+ * key on the same curve as the server's
+ * and the key should be authorized for
+ * key agreement.
+ *
+ * One also needs to add code in ssl3_connect
+ * to skip sending the certificate verify
+ * message.
+ *
+ * if ((s->cert->key->privatekey != NULL) &&
+ * (s->cert->key->privatekey->type ==
+ * EVP_PKEY_EC) && ...)
+ * ecdh_clnt_cert = 1;
*/
- if ((alg_k & (SSL_kECDHr | SSL_kECDHe)) && (s->cert != NULL)) {
- /*-
- * XXX: For now, we do not support client
- * authentication using ECDH certificates.
- * To add such support, one needs to add
- * code that checks for appropriate
- * conditions and sets ecdh_clnt_cert to 1.
- * For example, the cert have an ECC
- * key on the same curve as the server's
- * and the key should be authorized for
- * key agreement.
- *
- * One also needs to add code in ssl3_connect
- * to skip sending the certificate verify
- * message.
- *
- * if ((s->cert->key->privatekey != NULL) &&
- * (s->cert->key->privatekey->type ==
- * EVP_PKEY_EC) && ...)
- * ecdh_clnt_cert = 1;
- */
+ }
+
+ if (s->s3->peer_ecdh_tmp != NULL) {
+ tkey = s->s3->peer_ecdh_tmp;
+ } else {
+ /* Get the Server Public Key from Cert */
+ srvr_pub_pkey = X509_get_pubkey(s->session->peer);
+ if ((srvr_pub_pkey == NULL)
+ || (srvr_pub_pkey->type != EVP_PKEY_EC)
+ || (srvr_pub_pkey->pkey.ec == NULL)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
}
- if (s->session->sess_cert->peer_ecdh_tmp != NULL) {
- tkey = s->session->sess_cert->peer_ecdh_tmp;
- } else {
- /* Get the Server Public Key from Cert */
- srvr_pub_pkey =
- X509_get_pubkey(s->session->
- sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
- if ((srvr_pub_pkey == NULL)
- || (srvr_pub_pkey->type != EVP_PKEY_EC)
- || (srvr_pub_pkey->pkey.ec == NULL)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
+ tkey = srvr_pub_pkey->pkey.ec;
+ }
- tkey = srvr_pub_pkey->pkey.ec;
- }
+ srvr_group = EC_KEY_get0_group(tkey);
+ srvr_ecpoint = EC_KEY_get0_public_key(tkey);
- srvr_group = EC_KEY_get0_group(tkey);
- srvr_ecpoint = EC_KEY_get0_public_key(tkey);
+ if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
- if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
+ if ((clnt_ecdh = EC_KEY_new()) == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
- if ((clnt_ecdh = EC_KEY_new()) == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
+ if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (ecdh_clnt_cert) {
+ /*
+ * Reuse key info from our certificate We only need our
+ * private key to perform the ECDH computation.
+ */
+ const BIGNUM *priv_key;
+ tkey = s->cert->key->privatekey->pkey.ec;
+ priv_key = EC_KEY_get0_private_key(tkey);
+ if (priv_key == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto err;
}
-
- if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
+ if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
goto err;
}
- if (ecdh_clnt_cert) {
- /*
- * Reuse key info from our certificate We only need our
- * private key to perform the ECDH computation.
- */
- const BIGNUM *priv_key;
- tkey = s->cert->key->privatekey->pkey.ec;
- priv_key = EC_KEY_get0_private_key(tkey);
- if (priv_key == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
- goto err;
- }
- } else {
- /* Generate a new ECDH key pair */
- if (!(EC_KEY_generate_key(clnt_ecdh))) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_ECDH_LIB);
- goto err;
- }
- }
-
- /*
- * use the 'p' output buffer for the ECDH key, but make sure to
- * clear it out afterwards
- */
-
- field_size = EC_GROUP_get_degree(srvr_group);
- if (field_size <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
- goto err;
- }
- pmslen = (field_size + 7) / 8;
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
- n = ECDH_compute_key(pms, pmslen, srvr_ecpoint, clnt_ecdh, NULL);
- if (n <= 0 || pmslen != (size_t)n) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
+ } else {
+ /* Generate a new ECDH key pair */
+ if (!(EC_KEY_generate_key(clnt_ecdh))) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_ECDH_LIB);
goto err;
}
+ }
- if (ecdh_clnt_cert) {
- /* Send empty client key exch message */
- n = 0;
- } else {
- /*
- * First check the size of encoding and allocate memory
- * accordingly.
- */
- encoded_pt_len =
- EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- NULL, 0, NULL);
-
- encodedPoint = (unsigned char *)
- OPENSSL_malloc(encoded_pt_len * sizeof(unsigned char));
- bn_ctx = BN_CTX_new();
- if ((encodedPoint == NULL) || (bn_ctx == NULL)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* Encode the public key */
- n = EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- encodedPoint, encoded_pt_len, bn_ctx);
-
- *p = n; /* length of encoded point */
- /* Encoded point will be copied here */
- p += 1;
- /* copy the point */
- memcpy((unsigned char *)p, encodedPoint, n);
- /* increment n to account for length field */
- n += 1;
- }
+ /*
+ * use the 'p' output buffer for the ECDH key, but make sure to
+ * clear it out afterwards
+ */
- /* Free allocated memory */
- BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL)
- OPENSSL_free(encodedPoint);
- EC_KEY_free(clnt_ecdh);
- EVP_PKEY_free(srvr_pub_pkey);
+ field_size = EC_GROUP_get_degree(srvr_group);
+ if (field_size <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
+ goto err;
+ }
+ pmslen = (field_size + 7) / 8;
+ pms = OPENSSL_malloc(pmslen);
+ if (!pms)
+ goto memerr;
+ n = ECDH_compute_key(pms, pmslen, srvr_ecpoint, clnt_ecdh, NULL);
+ if (n <= 0 || pmslen != (size_t)n) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
+ goto err;
}
-#endif /* !OPENSSL_NO_EC */
- else if (alg_k & SSL_kGOST) {
- /* GOST key exchange message creation */
- EVP_PKEY_CTX *pkey_ctx;
- X509 *peer_cert;
- size_t msglen;
- unsigned int md_len;
- int keytype;
- unsigned char shared_ukm[32], tmp[256];
- EVP_MD_CTX *ukm_hash;
- EVP_PKEY *pub_key;
-
- pmslen = 32;
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
+ if (ecdh_clnt_cert) {
+ /* Send empty client key exch message */
+ n = 0;
+ } else {
/*
- * Get server sertificate PKEY and create ctx from it
+ * First check the size of encoding and allocate memory
+ * accordingly.
*/
- peer_cert =
- s->session->
- sess_cert->peer_pkeys[(keytype = SSL_PKEY_GOST01)].x509;
- if (!peer_cert)
- peer_cert =
- s->session->
- sess_cert->peer_pkeys[(keytype = SSL_PKEY_GOST94)].x509;
- if (!peer_cert) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
+ encoded_pt_len =
+ EC_POINT_point2oct(srvr_group,
+ EC_KEY_get0_public_key(clnt_ecdh),
+ POINT_CONVERSION_UNCOMPRESSED,
+ NULL, 0, NULL);
+
+ encodedPoint = (unsigned char *)
+ OPENSSL_malloc(encoded_pt_len * sizeof(unsigned char));
+ bn_ctx = BN_CTX_new();
+ if ((encodedPoint == NULL) || (bn_ctx == NULL)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
goto err;
}
- pkey_ctx = EVP_PKEY_CTX_new(pub_key =
- X509_get_pubkey(peer_cert), NULL);
- /*
- * If we have send a certificate, and certificate key
- *
- * * parameters match those of server certificate, use
- * certificate key for key exchange
- */
+ /* Encode the public key */
+ n = EC_POINT_point2oct(srvr_group,
+ EC_KEY_get0_public_key(clnt_ecdh),
+ POINT_CONVERSION_UNCOMPRESSED,
+ encodedPoint, encoded_pt_len, bn_ctx);
- /* Otherwise, generate ephemeral key pair */
+ *p = n; /* length of encoded point */
+ /* Encoded point will be copied here */
+ p += 1;
+ /* copy the point */
+ memcpy(p, encodedPoint, n);
+ /* increment n to account for length field */
+ n += 1;
+ }
- EVP_PKEY_encrypt_init(pkey_ctx);
- /* Generate session key */
- if (RAND_bytes(pms, pmslen) <= 0) {
- EVP_PKEY_CTX_free(pkey_ctx);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- };
- /*
- * If we have client certificate, use its secret as peer key
- */
- if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
- if (EVP_PKEY_derive_set_peer
- (pkey_ctx, s->cert->key->privatekey) <= 0) {
- /*
- * If there was an error - just ignore it. Ephemeral key
- * * would be used
- */
- ERR_clear_error();
- }
- }
- /*
- * Compute shared IV and store it in algorithm-specific context
- * data
- */
- ukm_hash = EVP_MD_CTX_create();
- EVP_DigestInit(ukm_hash,
- EVP_get_digestbynid(NID_id_GostR3411_94));
- EVP_DigestUpdate(ukm_hash, s->s3->client_random,
- SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(ukm_hash, s->s3->server_random,
- SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
- EVP_MD_CTX_destroy(ukm_hash);
- if (EVP_PKEY_CTX_ctrl
- (pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT, EVP_PKEY_CTRL_SET_IV, 8,
- shared_ukm) < 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_LIBRARY_BUG);
- goto err;
- }
- /* Make GOST keytransport blob message */
- /*
- * Encapsulate it into sequence
- */
- *(p++) = V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
- msglen = 255;
- if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) < 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_LIBRARY_BUG);
- goto err;
- }
- if (msglen >= 0x80) {
- *(p++) = 0x81;
- *(p++) = msglen & 0xff;
- n = msglen + 3;
- } else {
- *(p++) = msglen & 0xff;
- n = msglen + 2;
- }
- memcpy(p, tmp, msglen);
- /* Check if pubkey from client certificate was used */
- if (EVP_PKEY_CTX_ctrl
- (pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) {
- /* Set flag "skip certificate verify" */
- s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
- }
- EVP_PKEY_CTX_free(pkey_ctx);
- EVP_PKEY_free(pub_key);
+ /* Free allocated memory */
+ BN_CTX_free(bn_ctx);
+ OPENSSL_free(encodedPoint);
+ EC_KEY_free(clnt_ecdh);
+ EVP_PKEY_free(srvr_pub_pkey);
+ }
+#endif /* !OPENSSL_NO_EC */
+ else if (alg_k & SSL_kGOST) {
+ /* GOST key exchange message creation */
+ EVP_PKEY_CTX *pkey_ctx;
+ X509 *peer_cert;
+ size_t msglen;
+ unsigned int md_len;
+ unsigned char shared_ukm[32], tmp[256];
+ EVP_MD_CTX *ukm_hash;
+ EVP_PKEY *pub_key;
+
+ pmslen = 32;
+ pms = OPENSSL_malloc(pmslen);
+ if (!pms)
+ goto memerr;
+ /*
+ * Get server sertificate PKEY and create ctx from it
+ */
+ peer_cert = s->session->peer;
+ if (!peer_cert) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
+ goto err;
}
-#ifndef OPENSSL_NO_SRP
- else if (alg_k & SSL_kSRP) {
- if (s->srp_ctx.A != NULL) {
- /* send off the data */
- n = BN_num_bytes(s->srp_ctx.A);
- s2n(n, p);
- BN_bn2bin(s->srp_ctx.A, p);
- n += 2;
- } else {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- if (s->session->srp_username != NULL)
- OPENSSL_free(s->session->srp_username);
- s->session->srp_username = BUF_strdup(s->srp_ctx.login);
- if (s->session->srp_username == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
-#endif
-#ifndef OPENSSL_NO_PSK
- else if (alg_k & SSL_kPSK) {
- /*
- * The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes to return a
- * \0-terminated identity. The last byte is for us for simulating
- * strnlen.
- */
- char identity[PSK_MAX_IDENTITY_LEN + 2];
- size_t identity_len;
- unsigned char *t = NULL;
- unsigned int psk_len = 0;
- int psk_err = 1;
- n = 0;
- if (s->psk_client_callback == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_NO_CLIENT_CB);
- goto err;
- }
-
- memset(identity, 0, sizeof(identity));
- /* Allocate maximum size buffer */
- pmslen = PSK_MAX_PSK_LEN * 2 + 4;
- pms = OPENSSL_malloc(pmslen);
- if (!pms)
- goto memerr;
-
- psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
- identity, sizeof(identity) - 1,
- pms, pmslen);
- if (psk_len > PSK_MAX_PSK_LEN) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto psk_err;
- } else if (psk_len == 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_IDENTITY_NOT_FOUND);
- goto psk_err;
- }
- /* Change pmslen to real length */
- pmslen = 2 + psk_len + 2 + psk_len;
- identity[PSK_MAX_IDENTITY_LEN + 1] = '\0';
- identity_len = strlen(identity);
- if (identity_len > PSK_MAX_IDENTITY_LEN) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto psk_err;
- }
- /* create PSK pre_master_secret */
- t = pms;
- memmove(pms + psk_len + 4, pms, psk_len);
- s2n(psk_len, t);
- memset(t, 0, psk_len);
- t += psk_len;
- s2n(psk_len, t);
-
- if (s->session->psk_identity_hint != NULL)
- OPENSSL_free(s->session->psk_identity_hint);
- s->session->psk_identity_hint =
- BUF_strdup(s->ctx->psk_identity_hint);
- if (s->ctx->psk_identity_hint != NULL
- && s->session->psk_identity_hint == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
+ pkey_ctx = EVP_PKEY_CTX_new(pub_key =
+ X509_get_pubkey(peer_cert), NULL);
+ /*
+ * If we have send a certificate, and certificate key
+ *
+ * * parameters match those of server certificate, use
+ * certificate key for key exchange
+ */
- if (s->session->psk_identity != NULL)
- OPENSSL_free(s->session->psk_identity);
- s->session->psk_identity = BUF_strdup(identity);
- if (s->session->psk_identity == NULL) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
+ /* Otherwise, generate ephemeral key pair */
- s2n(identity_len, p);
- memcpy(p, identity, identity_len);
- n = 2 + identity_len;
- psk_err = 0;
- psk_err:
- OPENSSL_cleanse(identity, sizeof(identity));
- if (psk_err != 0) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- goto err;
+ EVP_PKEY_encrypt_init(pkey_ctx);
+ /* Generate session key */
+ if (RAND_bytes(pms, pmslen) <= 0) {
+ EVP_PKEY_CTX_free(pkey_ctx);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ };
+ /*
+ * If we have client certificate, use its secret as peer key
+ */
+ if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
+ if (EVP_PKEY_derive_set_peer
+ (pkey_ctx, s->cert->key->privatekey) <= 0) {
+ /*
+ * If there was an error - just ignore it. Ephemeral key
+ * * would be used
+ */
+ ERR_clear_error();
}
}
-#endif
- else {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ /*
+ * Compute shared IV and store it in algorithm-specific context
+ * data
+ */
+ ukm_hash = EVP_MD_CTX_create();
+ EVP_DigestInit(ukm_hash,
+ EVP_get_digestbynid(NID_id_GostR3411_94));
+ EVP_DigestUpdate(ukm_hash, s->s3->client_random,
+ SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(ukm_hash, s->s3->server_random,
+ SSL3_RANDOM_SIZE);
+ EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
+ EVP_MD_CTX_destroy(ukm_hash);
+ if (EVP_PKEY_CTX_ctrl
+ (pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT, EVP_PKEY_CTRL_SET_IV, 8,
+ shared_ukm) < 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_LIBRARY_BUG);
goto err;
}
-
- if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n)) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ /* Make GOST keytransport blob message */
+ /*
+ * Encapsulate it into sequence
+ */
+ *(p++) = V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
+ msglen = 255;
+ if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) < 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ SSL_R_LIBRARY_BUG);
goto err;
}
+ if (msglen >= 0x80) {
+ *(p++) = 0x81;
+ *(p++) = msglen & 0xff;
+ n = msglen + 3;
+ } else {
+ *(p++) = msglen & 0xff;
+ n = msglen + 2;
+ }
+ memcpy(p, tmp, msglen);
+ /* Check if pubkey from client certificate was used */
+ if (EVP_PKEY_CTX_ctrl
+ (pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) {
+ /* Set flag "skip certificate verify" */
+ s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
+ }
+ EVP_PKEY_CTX_free(pkey_ctx);
+ EVP_PKEY_free(pub_key);
- s->state = SSL3_ST_CW_KEY_EXCH_B;
}
-
- /* SSL3_ST_CW_KEY_EXCH_B */
- n = ssl_do_write(s);
#ifndef OPENSSL_NO_SRP
- /* Check for SRP */
- if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
- /*
- * If everything written generate master key: no need to save PMS as
- * SRP_generate_client_master_secret generates it internally.
- */
- if (n > 0) {
- if ((s->session->master_key_length =
- SRP_generate_client_master_secret(s,
- s->session->master_key)) <
- 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- }
- } else
-#endif
- /* If we haven't written everything save PMS */
- if (n <= 0) {
- s->cert->pms = pms;
- s->cert->pmslen = pmslen;
- } else {
- /* If we don't have a PMS restore */
- if (pms == NULL) {
- pms = s->cert->pms;
- pmslen = s->cert->pmslen;
- }
- if (pms == NULL) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ else if (alg_k & SSL_kSRP) {
+ if (s->srp_ctx.A != NULL) {
+ /* send off the data */
+ n = BN_num_bytes(s->srp_ctx.A);
+ s2n(n, p);
+ BN_bn2bin(s->srp_ctx.A, p);
+ n += 2;
+ } else {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
goto err;
}
- s->session->master_key_length =
- s->method->ssl3_enc->generate_master_secret(s,
- s->
- session->master_key,
- pms, pmslen);
- OPENSSL_cleanse(pms, pmslen);
- OPENSSL_free(pms);
- s->cert->pms = NULL;
- if (s->session->master_key_length < 0) {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ OPENSSL_free(s->session->srp_username);
+ s->session->srp_username = BUF_strdup(s->srp_ctx.login);
+ if (s->session->srp_username == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
goto err;
}
}
- return n;
+#endif
+ else {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+#ifndef OPENSSL_NO_PSK
+ n += pskhdrlen;
+#endif
+
+ if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ s->s3->tmp.pms = pms;
+ s->s3->tmp.pmslen = pmslen;
+
+ return 1;
memerr:
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
err:
- if (pms) {
- OPENSSL_cleanse(pms, pmslen);
- OPENSSL_free(pms);
- s->cert->pms = NULL;
- }
+ OPENSSL_clear_free(pms, pmslen);
+ s->s3->tmp.pms = NULL;
#ifndef OPENSSL_NO_EC
BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL)
- OPENSSL_free(encodedPoint);
+ OPENSSL_free(encodedPoint);
EC_KEY_free(clnt_ecdh);
EVP_PKEY_free(srvr_pub_pkey);
#endif
- return (-1);
+#ifndef OPENSSL_NO_PSK
+ OPENSSL_clear_free(s->s3->tmp.psk, s->s3->tmp.psklen);
+ s->s3->tmp.psk = NULL;
+#endif
+ statem_set_error(s);
+ return 0;
+}
+
+int tls_client_key_exchange_post_work(SSL *s)
+{
+ unsigned char *pms = NULL;
+ size_t pmslen = 0;
+
+#ifndef OPENSSL_NO_SRP
+ /* Check for SRP */
+ if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
+ if (!srp_generate_client_master_secret(s)) {
+ SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ return 1;
+ }
+#endif
+ pms = s->s3->tmp.pms;
+ pmslen = s->s3->tmp.pmslen;
+
+ if (pms == NULL && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!ssl_generate_master_secret(s, pms, pmslen, 1)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ return 1;
+ err:
+ OPENSSL_clear_free(pms, pmslen);
+ s->s3->tmp.pms = NULL;
+ return 0;
}
int ssl3_send_client_verify(SSL *s)
+{
+ if (s->state == SSL3_ST_CW_CERT_VRFY_A) {
+ if(tls_construct_client_verify(s) == 0)
+ goto err;
+
+ s->state = SSL3_ST_CW_CERT_VRFY_B;
+ }
+
+ /* SSL3_ST_CW_CERT_VRFY_B */
+ return ssl_do_write(s);
+ err:
+ s->state = SSL_ST_ERR;
+ return -1;
+
+}
+
+int tls_construct_client_verify(SSL *s)
{
unsigned char *p;
unsigned char data[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
EVP_MD_CTX_init(&mctx);
- if (s->state == SSL3_ST_CW_CERT_VRFY_A) {
- p = ssl_handshake_start(s);
- pkey = s->cert->key->privatekey;
+ p = ssl_handshake_start(s);
+ pkey = s->cert->key->privatekey;
/* Create context from key and test if sha1 is allowed as digest */
- pctx = EVP_PKEY_CTX_new(pkey, NULL);
- EVP_PKEY_sign_init(pctx);
- if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1()) > 0) {
- if (!SSL_USE_SIGALGS(s))
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_sha1,
- &(data
- [MD5_DIGEST_LENGTH]));
- } else {
- ERR_clear_error();
+ pctx = EVP_PKEY_CTX_new(pkey, NULL);
+ EVP_PKEY_sign_init(pctx);
+ if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1()) > 0) {
+ if (!SSL_USE_SIGALGS(s))
+ s->method->ssl3_enc->cert_verify_mac(s,
+ NID_sha1,
+ &(data
+ [MD5_DIGEST_LENGTH]));
+ } else {
+ ERR_clear_error();
+ }
+ /*
+ * For TLS v1.2 send signature algorithm and signature using agreed
+ * digest and cached handshake records.
+ */
+ if (SSL_USE_SIGALGS(s)) {
+ long hdatalen = 0;
+ void *hdata;
+ const EVP_MD *md = s->s3->tmp.md[s->cert->key - s->cert->pkeys];
+ hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
+ if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ goto err;
}
- /*
- * For TLS v1.2 send signature algorithm and signature using agreed
- * digest and cached handshake records.
- */
- if (SSL_USE_SIGALGS(s)) {
- long hdatalen = 0;
- void *hdata;
- const EVP_MD *md = s->cert->key->digest;
- hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
- if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- p += 2;
+ p += 2;
#ifdef SSL_DEBUG
- fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
- EVP_MD_name(md));
+ fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
+ EVP_MD_name(md));
#endif
- if (!EVP_SignInit_ex(&mctx, md, NULL)
- || !EVP_SignUpdate(&mctx, hdata, hdatalen)
- || !EVP_SignFinal(&mctx, p + 2, &u, pkey)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_EVP_LIB);
- goto err;
- }
- s2n(u, p);
- n = u + 4;
- /*
- * For extended master secret we've already digested cached
- * records.
- */
- if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
- BIO_free(s->s3->handshake_buffer);
- s->s3->handshake_buffer = NULL;
- s->s3->flags &= ~TLS1_FLAGS_KEEP_HANDSHAKE;
- } else if (!ssl3_digest_cached_records(s))
- goto err;
- } else
+ if (!EVP_SignInit_ex(&mctx, md, NULL)
+ || !EVP_SignUpdate(&mctx, hdata, hdatalen)
+ || !EVP_SignFinal(&mctx, p + 2, &u, pkey)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_EVP_LIB);
+ goto err;
+ }
+ s2n(u, p);
+ n = u + 4;
+ /* Digest cached records and discard handshake buffer */
+ if (!ssl3_digest_cached_records(s, 0))
+ goto err;
+ } else
#ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA) {
- s->method->ssl3_enc->cert_verify_mac(s, NID_md5, &(data[0]));
- if (RSA_sign(NID_md5_sha1, data,
- MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
- &(p[2]), &u, pkey->pkey.rsa) <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_RSA_LIB);
- goto err;
- }
- s2n(u, p);
- n = u + 2;
- } else
+ if (pkey->type == EVP_PKEY_RSA) {
+ s->method->ssl3_enc->cert_verify_mac(s, NID_md5, &(data[0]));
+ if (RSA_sign(NID_md5_sha1, data,
+ MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
+ &(p[2]), &u, pkey->pkey.rsa) <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_RSA_LIB);
+ goto err;
+ }
+ s2n(u, p);
+ n = u + 2;
+ } else
#endif
#ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA) {
- if (!DSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH, &(p[2]),
- (unsigned int *)&j, pkey->pkey.dsa)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_DSA_LIB);
- goto err;
- }
- s2n(j, p);
- n = j + 2;
- } else
+ if (pkey->type == EVP_PKEY_DSA) {
+ if (!DSA_sign(pkey->save_type,
+ &(data[MD5_DIGEST_LENGTH]),
+ SHA_DIGEST_LENGTH, &(p[2]),
+ (unsigned int *)&j, pkey->pkey.dsa)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_DSA_LIB);
+ goto err;
+ }
+ s2n(j, p);
+ n = j + 2;
+ } else
#endif
#ifndef OPENSSL_NO_EC
- if (pkey->type == EVP_PKEY_EC) {
- if (!ECDSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH, &(p[2]),
- (unsigned int *)&j, pkey->pkey.ec)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_ECDSA_LIB);
- goto err;
- }
- s2n(j, p);
- n = j + 2;
- } else
-#endif
- if (pkey->type == NID_id_GostR3410_94
- || pkey->type == NID_id_GostR3410_2001) {
- unsigned char signbuf[64];
- int i;
- size_t sigsize = 64;
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_id_GostR3411_94, data);
- if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- for (i = 63, j = 0; i >= 0; j++, i--) {
- p[2 + j] = signbuf[i];
- }
- s2n(j, p);
- n = j + 2;
- } else {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ if (pkey->type == EVP_PKEY_EC) {
+ if (!ECDSA_sign(pkey->save_type,
+ &(data[MD5_DIGEST_LENGTH]),
+ SHA_DIGEST_LENGTH, &(p[2]),
+ (unsigned int *)&j, pkey->pkey.ec)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_ECDSA_LIB);
goto err;
}
- if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ s2n(j, p);
+ n = j + 2;
+ } else
+#endif
+ if (pkey->type == NID_id_GostR3410_2001) {
+ unsigned char signbuf[64];
+ int i;
+ size_t sigsize = 64;
+ s->method->ssl3_enc->cert_verify_mac(s,
+ NID_id_GostR3411_94, data);
+ if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
goto err;
}
- s->state = SSL3_ST_CW_CERT_VRFY_B;
+ for (i = 63, j = 0; i >= 0; j++, i--) {
+ p[2 + j] = signbuf[i];
+ }
+ s2n(j, p);
+ n = j + 2;
+ } else {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ goto err;
}
+ if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
EVP_MD_CTX_cleanup(&mctx);
EVP_PKEY_CTX_free(pctx);
- return ssl_do_write(s);
+ return 1;
err:
EVP_MD_CTX_cleanup(&mctx);
EVP_PKEY_CTX_free(pctx);
- return (-1);
+ return 0;
}
/*
if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
return 0;
/* If no suitable signature algorithm can't use certificate */
- if (SSL_USE_SIGALGS(s) && !s->cert->key->digest)
+ if (SSL_USE_SIGALGS(s) && !s->s3->tmp.md[s->cert->key - s->cert->pkeys])
return 0;
/*
* If strict mode check suitability of chain before using it. This also
alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
/* See if we can use client certificate for fixed DH */
if (alg_k & (SSL_kDHr | SSL_kDHd)) {
- SESS_CERT *scert = s->session->sess_cert;
- int i = scert->peer_cert_type;
+ int i = s->session->peer_type;
EVP_PKEY *clkey = NULL, *spkey = NULL;
clkey = s->cert->key->privatekey;
/* If client key not DH assume it can be used */
if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
return 1;
if (i >= 0)
- spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
+ spkey = X509_get_pubkey(s->session->peer);
if (spkey) {
/* Compare server and client parameters */
i = EVP_PKEY_cmp_parameters(clkey, spkey);
return 1;
}
+
int ssl3_send_client_certificate(SSL *s)
+{
+ enum WORK_STATE wst;
+
+ if (s->state == SSL3_ST_CW_CERT_A || s->state == SSL3_ST_CW_CERT_B) {
+ if (s->state == SSL3_ST_CW_CERT_A)
+ wst = tls_prepare_client_certificate(s, WORK_MORE_A);
+ else
+ wst = tls_prepare_client_certificate(s, WORK_MORE_B);
+ if (wst == WORK_ERROR)
+ goto err;
+ if (wst == WORK_MORE_A)
+ return -1;
+ if (wst == WORK_MORE_B) {
+ s->state = SSL3_ST_CW_CERT_B;
+ return -1;
+ }
+
+ s->state = SSL3_ST_CW_CERT_C;
+ }
+
+ if (s->state == SSL3_ST_CW_CERT_B) {
+ wst = tls_prepare_client_certificate(s, WORK_MORE_B);
+ if (wst == WORK_ERROR)
+ goto err;
+ if (wst == WORK_MORE_A)
+ return -1;
+
+ /* Skip state C...it was entirely temporary in the original code */
+ s->state = SSL3_ST_CW_CERT_D;
+ }
+
+ if (tls_construct_client_certificate(s) == 0)
+ goto err;
+
+ return ssl_do_write(s);
+ err:
+ s->state = SSL_ST_ERR;
+ return -1;
+
+}
+
+enum WORK_STATE tls_prepare_client_certificate(SSL *s, enum WORK_STATE wst)
{
X509 *x509 = NULL;
EVP_PKEY *pkey = NULL;
int i;
- if (s->state == SSL3_ST_CW_CERT_A) {
+ if (wst == WORK_MORE_A) {
/* Let cert callback update client certificates if required */
if (s->cert->cert_cb) {
i = s->cert->cert_cb(s, s->cert->cert_cb_arg);
if (i < 0) {
s->rwstate = SSL_X509_LOOKUP;
- return -1;
+ return WORK_MORE_A;
}
if (i == 0) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ statem_set_error(s);
return 0;
}
s->rwstate = SSL_NOTHING;
}
if (ssl3_check_client_certificate(s))
- s->state = SSL3_ST_CW_CERT_C;
- else
- s->state = SSL3_ST_CW_CERT_B;
+ return WORK_FINISHED_CONTINUE;
+
+ /* Fall through to WORK_MORE_B */
+ wst = WORK_MORE_B;
}
/* We need to get a client cert */
- if (s->state == SSL3_ST_CW_CERT_B) {
+ if (wst == WORK_MORE_B) {
/*
* If we get an error, we need to ssl->rwstate=SSL_X509_LOOKUP;
* return(-1); We then get retied later
*/
- i = 0;
i = ssl_do_client_cert_cb(s, &x509, &pkey);
if (i < 0) {
s->rwstate = SSL_X509_LOOKUP;
- return (-1);
+ return WORK_MORE_B;
}
s->rwstate = SSL_NOTHING;
if ((i == 1) && (pkey != NULL) && (x509 != NULL)) {
- s->state = SSL3_ST_CW_CERT_B;
if (!SSL_use_certificate(s, x509) || !SSL_use_PrivateKey(s, pkey))
i = 0;
} else if (i == 1) {
i = 0;
- SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,
+ SSLerr(SSL_F_TLS_PREPARE_CLIENT_CERTIFICATE,
SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
}
- if (x509 != NULL)
- X509_free(x509);
- if (pkey != NULL)
- EVP_PKEY_free(pkey);
+ X509_free(x509);
+ EVP_PKEY_free(pkey);
if (i && !ssl3_check_client_certificate(s))
i = 0;
if (i == 0) {
if (s->version == SSL3_VERSION) {
s->s3->tmp.cert_req = 0;
ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_CERTIFICATE);
- return (1);
+ return WORK_FINISHED_CONTINUE;
} else {
s->s3->tmp.cert_req = 2;
+ if (!ssl3_digest_cached_records(s, 0)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ statem_set_error(s);
+ return 0;
+ }
}
}
- /* Ok, we have a cert */
- s->state = SSL3_ST_CW_CERT_C;
+ return WORK_FINISHED_CONTINUE;
}
- if (s->state == SSL3_ST_CW_CERT_C) {
- s->state = SSL3_ST_CW_CERT_D;
- if (!ssl3_output_cert_chain(s,
- (s->s3->tmp.cert_req ==
- 2) ? NULL : s->cert->key)) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR);
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- return 0;
- }
+ /* Shouldn't ever get here */
+ return WORK_ERROR;
+}
+
+int tls_construct_client_certificate(SSL *s)
+{
+ if (!ssl3_output_cert_chain(s,
+ (s->s3->tmp.cert_req ==
+ 2) ? NULL : s->cert->key)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ statem_set_error(s);
+ return 0;
}
- /* SSL3_ST_CW_CERT_D */
- return ssl_do_write(s);
+
+ return 1;
}
#define has_bits(i,m) (((i)&(m)) == (m))
int i, idx;
long alg_k, alg_a;
EVP_PKEY *pkey = NULL;
- SESS_CERT *sc;
+ int pkey_bits;
#ifndef OPENSSL_NO_RSA
RSA *rsa;
#endif
#ifndef OPENSSL_NO_DH
DH *dh;
#endif
+ int al = SSL_AD_HANDSHAKE_FAILURE;
alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
alg_a = s->s3->tmp.new_cipher->algorithm_auth;
/* we don't have a certificate */
- if ((alg_a & (SSL_aNULL | SSL_aKRB5)) || (alg_k & SSL_kPSK))
+ if ((alg_a & SSL_aNULL) || (alg_k & SSL_kPSK))
return (1);
-
- sc = s->session->sess_cert;
- if (sc == NULL) {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, ERR_R_INTERNAL_ERROR);
- goto err;
- }
#ifndef OPENSSL_NO_RSA
- rsa = s->session->sess_cert->peer_rsa_tmp;
+ rsa = s->s3->peer_rsa_tmp;
#endif
#ifndef OPENSSL_NO_DH
- dh = s->session->sess_cert->peer_dh_tmp;
+ dh = s->s3->peer_dh_tmp;
#endif
/* This is the passed certificate */
- idx = sc->peer_cert_type;
+ idx = s->session->peer_type;
#ifndef OPENSSL_NO_EC
if (idx == SSL_PKEY_ECC) {
- if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, s) == 0) {
+ if (ssl_check_srvr_ecc_cert_and_alg(s->session->peer, s) == 0) {
/* check failed */
SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_BAD_ECC_CERT);
goto f_err;
goto f_err;
}
#endif
- pkey = X509_get_pubkey(sc->peer_pkeys[idx].x509);
- i = X509_certificate_type(sc->peer_pkeys[idx].x509, pkey);
+ pkey = X509_get_pubkey(s->session->peer);
+ pkey_bits = EVP_PKEY_bits(pkey);
+ i = X509_certificate_type(s->session->peer, pkey);
EVP_PKEY_free(pkey);
/* Check that we have a certificate if we require one */
}
#endif
#ifndef OPENSSL_NO_RSA
- if ((alg_k & SSL_kRSA) &&
- !(has_bits(i, EVP_PK_RSA | EVP_PKT_ENC) || (rsa != NULL))) {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
- SSL_R_MISSING_RSA_ENCRYPTING_CERT);
- goto f_err;
+ if (alg_k & (SSL_kRSA | SSL_kRSAPSK)) {
+ if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
+ !has_bits(i, EVP_PK_RSA | EVP_PKT_ENC)) {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
+ SSL_R_MISSING_RSA_ENCRYPTING_CERT);
+ goto f_err;
+ } else if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)) {
+ if (pkey_bits <= SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
+ if (!has_bits(i, EVP_PK_RSA | EVP_PKT_ENC)) {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
+ SSL_R_MISSING_RSA_ENCRYPTING_CERT);
+ goto f_err;
+ }
+ if (rsa != NULL) {
+ /* server key exchange is not allowed. */
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+ }
+ }
}
#endif
#ifndef OPENSSL_NO_DH
- if ((alg_k & SSL_kDHE) &&
- !(has_bits(i, EVP_PK_DH | EVP_PKT_EXCH) || (dh != NULL))) {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_MISSING_DH_KEY);
+ if ((alg_k & SSL_kDHE) && (dh == NULL)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, ERR_R_INTERNAL_ERROR);
goto f_err;
} else if ((alg_k & SSL_kDHr) && !SSL_USE_SIGALGS(s) &&
!has_bits(i, EVP_PK_DH | EVP_PKS_RSA)) {
# endif
#endif
- if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i, EVP_PKT_EXP)) {
+ if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
+ pkey_bits > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
#ifndef OPENSSL_NO_RSA
if (alg_k & SSL_kRSA) {
- if (rsa == NULL
- || RSA_size(rsa) * 8 >
+ if (rsa == NULL) {
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
+ SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
+ goto f_err;
+ } else if (RSA_bits(rsa) >
SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
+ /* We have a temporary RSA key but it's too large. */
+ al = SSL_AD_EXPORT_RESTRICTION;
SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
goto f_err;
} else
#endif
#ifndef OPENSSL_NO_DH
- if (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd)) {
- if (dh == NULL
- || DH_size(dh) * 8 >
+ if (alg_k & SSL_kDHE) {
+ if (DH_bits(dh) >
SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
+ /* We have a temporary DH key but it's too large. */
+ al = SSL_AD_EXPORT_RESTRICTION;
SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
SSL_R_MISSING_EXPORT_TMP_DH_KEY);
goto f_err;
}
+ } else if (alg_k & (SSL_kDHr | SSL_kDHd)) {
+ /* The cert should have had an export DH key. */
+ al = SSL_AD_EXPORT_RESTRICTION;
+ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
+ SSL_R_MISSING_EXPORT_TMP_DH_KEY);
+ goto f_err;
} else
#endif
{
}
return (1);
f_err:
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
return (0);
}
-#ifndef OPENSSL_NO_TLSEXT
/*
* Normally, we can tell if the server is resuming the session from
* the session ID. EAP-FAST (RFC 4851), however, relies on the next server
* message after the ServerHello to determine if the server is resuming.
* Therefore, we allow EAP-FAST to peek ahead.
- * ssl3_check_finished returns 1 if we are resuming from an external
- * pre-shared secret, we have a "ticket" and the next server handshake message
- * is Finished; and 0 otherwise. It returns -1 upon an error.
+ * ssl3_check_change returns 1 if we are resuming from an external
+ * pre-shared secret, we have a "ticket" and the next server message
+ * is CCS; and 0 otherwise. It returns -1 upon an error.
*/
-static int ssl3_check_finished(SSL *s)
+static int ssl3_check_change(SSL *s)
{
int ok = 0;
!s->session->tlsext_tick)
return 0;
- /* Need to permit this temporarily, in case the next message is Finished. */
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
/*
* This function is called when we might get a Certificate message instead,
* so permit appropriate message length.
SSL3_ST_CR_CERT_A,
SSL3_ST_CR_CERT_B,
-1, s->max_cert_list, &ok);
- s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
if (!ok)
return -1;
s->s3->tmp.reuse_message = 1;
- if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
+ if (s->s3->tmp.message_type == SSL3_MT_CHANGE_CIPHER_SPEC)
return 1;
- /* If we're not done, then the CCS arrived early and we should bail. */
- if (s->s3->change_cipher_spec) {
- SSLerr(SSL_F_SSL3_CHECK_FINISHED, SSL_R_CCS_RECEIVED_EARLY);
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
- return -1;
- }
-
return 0;
}
-# ifndef OPENSSL_NO_NEXTPROTONEG
+#ifndef OPENSSL_NO_NEXTPROTONEG
int ssl3_send_next_proto(SSL *s)
{
- unsigned int len, padding_len;
- unsigned char *d;
-
if (s->state == SSL3_ST_CW_NEXT_PROTO_A) {
- len = s->next_proto_negotiated_len;
- padding_len = 32 - ((len + 2) % 32);
- d = (unsigned char *)s->init_buf->data;
- d[4] = len;
- memcpy(d + 5, s->next_proto_negotiated, len);
- d[5 + len] = padding_len;
- memset(d + 6 + len, 0, padding_len);
- *(d++) = SSL3_MT_NEXT_PROTO;
- l2n3(2 + len + padding_len, d);
+ if (tls_construct_next_proto(s) == 0) {
+ s->state = SSL_ST_ERR;
+ return -1;
+ }
s->state = SSL3_ST_CW_NEXT_PROTO_B;
- s->init_num = 4 + 2 + len + padding_len;
- s->init_off = 0;
}
return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
}
-# endif
+
+int tls_construct_next_proto(SSL *s)
+{
+ unsigned int len, padding_len;
+ unsigned char *d;
+
+ len = s->next_proto_negotiated_len;
+ padding_len = 32 - ((len + 2) % 32);
+ d = (unsigned char *)s->init_buf->data;
+ d[4] = len;
+ memcpy(d + 5, s->next_proto_negotiated, len);
+ d[5 + len] = padding_len;
+ memset(d + 6 + len, 0, padding_len);
+ *(d++) = SSL3_MT_NEXT_PROTO;
+ l2n3(2 + len + padding_len, d);
+ s->init_num = 4 + 2 + len + padding_len;
+ s->init_off = 0;
+
+ return 1;
+}
#endif
int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
i = s->ctx->client_cert_cb(s, px509, ppkey);
return i;
}
+
+int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
+ unsigned char *p)
+{
+ int i, j = 0;
+ SSL_CIPHER *c;
+ unsigned char *q;
+ int empty_reneg_info_scsv = !s->renegotiate;
+ /* Set disabled masks for this session */
+ ssl_set_client_disabled(s);
+
+ if (sk == NULL)
+ return (0);
+ q = p;
+
+ for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
+ c = sk_SSL_CIPHER_value(sk, i);
+ /* Skip disabled ciphers */
+ if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
+ continue;
+#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
+ if (c->id == SSL3_CK_SCSV) {
+ if (!empty_reneg_info_scsv)
+ continue;
+ else
+ empty_reneg_info_scsv = 0;
+ }
+#endif
+ j = s->method->put_cipher_by_char(c, p);
+ p += j;
+ }
+ /*
+ * If p == q, no ciphers; caller indicates an error. Otherwise, add
+ * applicable SCSVs.
+ */
+ if (p != q) {
+ if (empty_reneg_info_scsv) {
+ static SSL_CIPHER scsv = {
+ 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ };
+ j = s->method->put_cipher_by_char(&scsv, p);
+ p += j;
+#ifdef OPENSSL_RI_DEBUG
+ fprintf(stderr,
+ "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
+#endif
+ }
+ if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
+ static SSL_CIPHER scsv = {
+ 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ };
+ j = s->method->put_cipher_by_char(&scsv, p);
+ p += j;
+ }
+ }
+
+ return (p - q);
+}
projects / openssl.git / blobdiff