#include <openssl/rand.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
+#include <openssl/hmac.h>
#include <openssl/x509.h>
#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
case SSL3_ST_SW_SRVR_HELLO_B:
ret=ssl3_send_server_hello(s);
if (ret <= 0) goto end;
-
+#ifndef OPENSSL_NO_TLSEXT
if (s->hit)
- s->state=SSL3_ST_SW_CHANGE_A;
+ {
+ if (s->tlsext_ticket_expected)
+ s->state=SSL3_ST_SW_SESSION_TICKET_A;
+ else
+ s->state=SSL3_ST_SW_CHANGE_A;
+ }
+#else
+ if (s->hit)
+ s->state=SSL3_ST_SW_CHANGE_A;
+#endif
else
s->state=SSL3_ST_SW_CERT_A;
s->init_num=0;
{
ret=ssl3_send_server_certificate(s);
if (ret <= 0) goto end;
+#ifndef OPENSSL_NO_TLSEXT
+ if (s->tlsext_status_expected)
+ s->state=SSL3_ST_SW_CERT_STATUS_A;
+ else
+ s->state=SSL3_ST_SW_KEY_EXCH_A;
+ }
+ else
+ {
+ skip = 1;
+ s->state=SSL3_ST_SW_KEY_EXCH_A;
+ }
+#else
}
else
skip=1;
+
s->state=SSL3_ST_SW_KEY_EXCH_A;
+#endif
s->init_num=0;
break;
}
else
{
+ int offset=0;
+ int dgst_num;
s->state=SSL3_ST_SR_CERT_VRFY_A;
s->init_num=0;
/* We need to get hashes here so if there is
* a client cert, it can be verified
+ * FIXME - digest processing for CertificateVerify
+ * should be generalized. But it is next step
*/
- s->method->ssl3_enc->cert_verify_mac(s,
- &(s->s3->finish_dgst1),
- &(s->s3->tmp.cert_verify_md[0]));
- s->method->ssl3_enc->cert_verify_mac(s,
- &(s->s3->finish_dgst2),
- &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
+ if (s->s3->handshake_buffer)
+ ssl3_digest_cached_records(s);
+ for (dgst_num=0; dgst_num<SSL_MAX_DIGEST;dgst_num++)
+ if (s->s3->handshake_dgst[dgst_num])
+ {
+ s->method->ssl3_enc->cert_verify_mac(s,EVP_MD_CTX_type(s->s3->handshake_dgst[dgst_num]),&(s->s3->tmp.cert_verify_md[offset]));
+ offset+=EVP_MD_CTX_size(s->s3->handshake_dgst[dgst_num]);
+ }
}
break;
ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
SSL3_ST_SR_FINISHED_B);
if (ret <= 0) goto end;
+#ifndef OPENSSL_NO_TLSEXT
+ if (s->tlsext_ticket_expected)
+ s->state=SSL3_ST_SW_SESSION_TICKET_A;
+ else if (s->hit)
+ s->state=SSL_ST_OK;
+#else
if (s->hit)
s->state=SSL_ST_OK;
+#endif
else
s->state=SSL3_ST_SW_CHANGE_A;
s->init_num=0;
break;
+#ifndef OPENSSL_NO_TLSEXT
+ case SSL3_ST_SW_SESSION_TICKET_A:
+ case SSL3_ST_SW_SESSION_TICKET_B:
+ ret=ssl3_send_newsession_ticket(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_SW_CHANGE_A;
+ s->init_num=0;
+ break;
+
+ case SSL3_ST_SW_CERT_STATUS_A:
+ case SSL3_ST_SW_CERT_STATUS_B:
+ ret=ssl3_send_cert_status(s);
+ if (ret <= 0) goto end;
+ s->state=SSL3_ST_SW_KEY_EXCH_A;
+ s->init_num=0;
+ break;
+
+#endif
+
case SSL3_ST_SW_CHANGE_A:
case SSL3_ST_SW_CHANGE_B:
s->client_version=(((int)p[0])<<8)|(int)p[1];
p+=2;
- if (s->client_version < s->version)
+ if ((s->version == DTLS1_VERSION && s->client_version > s->version) ||
+ (s->version != DTLS1_VERSION && s->client_version < s->version))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO, SSL_R_WRONG_VERSION_NUMBER);
if ((s->client_version>>8) == SSL3_VERSION_MAJOR)
* might be written that become totally unsecure when compiled with
* an earlier library version)
*/
- if (j == 0 || (s->new_session && (s->options & SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION)))
+ if ((s->new_session && (s->options & SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION)))
{
if (!ssl_get_new_session(s,1))
goto err;
}
else
{
- i=ssl_get_prev_session(s,p,j);
+ i=ssl_get_prev_session(s, p, j, d + n);
if (i == 1)
{ /* previous session */
s->hit=1;
p+=j;
- if (SSL_version(s) == DTLS1_VERSION)
+ if (s->version == DTLS1_VERSION)
{
/* cookie stuff */
cookie_len = *(p++);
}
}
if (ssl_check_clienthello_tlsext(s) <= 0) {
- SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_CLIENTHELLO_TLSEXT);
+ SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
goto err;
}
#endif
goto f_err;
}
s->s3->tmp.new_cipher=c;
+ ssl3_digest_cached_records(s);
}
else
{
else
#endif
s->s3->tmp.new_cipher=s->session->cipher;
+ /* Clear cached handshake records */
+ BIO_free(s->s3->handshake_buffer);
+ s->s3->handshake_buffer = NULL;
}
/* we now have the following setup.
* session-id if we want it to be single use.
* Currently I will not implement the '0' length session-id
* 12-Jan-98 - I'll now support the '0' length stuff.
+ *
+ * We also have an additional case where stateless session
+ * resumption is successful: we always send back the old
+ * session id. In this case s->hit is non zero: this can
+ * only happen if stateless session resumption is succesful
+ * if session caching is disabled so existing functionality
+ * is unaffected.
*/
- if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER))
+ if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)
+ && !s->hit)
s->session->session_id_length=0;
sl=s->session->session_id_length;
return -1;
}
#endif
-
/* do the header */
l=(p-d);
d=buf;
rsa=pkey->pkey.rsa;
}
- /* TLS */
+ /* TLS and [incidentally] DTLS{0xFEFF} */
if (s->version > SSL3_VERSION)
{
n2s(p,i);
}
else
#endif
+ if (alg_k & SSL_kGOST)
+ {
+ EVP_PKEY_CTX *pkey_ctx;
+ unsigned char premaster_secret[32];
+ size_t outlen;
+
+ /* Get our certificate privatec key*/
+ pkey_ctx = EVP_PKEY_CTX_new(s->cert->key->privatekey,NULL);
+ EVP_PKEY_decrypt_init(pkey_ctx);
+ /* Decrypt session key */
+ if ((*p!=( V_ASN1_SEQUENCE| V_ASN1_CONSTRUCTED)) || p[1]!=0x81 )
+ {
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_DECRYPTION_FAILED);
+ goto err;
+ }
+ if (EVP_PKEY_decrypt(pkey_ctx,premaster_secret,&outlen,p+3,p[2]) <0)
+
+ {
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_DECRYPTION_FAILED);
+ goto err;
+ }
+ /* Generate master secret */
+ EVP_PKEY_CTX_free(pkey_ctx);
+ s->session->master_key_length=
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->session->master_key,premaster_secret,32);
+
+ }
+ else
{
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
/* we now have a signature that we need to verify */
p=(unsigned char *)s->init_msg;
- n2s(p,i);
- n-=2;
- if (i > n)
+ /* Check for broken implementations of GOST ciphersuites */
+ /* If key is GOST and n is exactly 64, it is bare
+ * signature without length field */
+ if (n==64 && (pkey->type==NID_id_GostR3410_94 ||
+ pkey->type == NID_id_GostR3410_2001) )
{
- SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_LENGTH_MISMATCH);
- al=SSL_AD_DECODE_ERROR;
- goto f_err;
- }
-
+ i=64;
+ }
+ else
+ {
+ n2s(p,i);
+ n-=2;
+ if (i > n)
+ {
+ SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_LENGTH_MISMATCH);
+ al=SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ }
j=EVP_PKEY_size(pkey);
if ((i > j) || (n > j) || (n <= 0))
{
}
else
#endif
+ if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
+ { unsigned char signature[64];
+ int idx;
+ EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new(pkey,NULL);
+ EVP_PKEY_verify_init(pctx);
+ if (i!=64) {
+ fprintf(stderr,"GOST signature length is %d",i);
+ }
+ for (idx=0;idx<64;idx++) {
+ signature[63-idx]=p[idx];
+ }
+ j=EVP_PKEY_verify(pctx,signature,64,s->s3->tmp.cert_verify_md,32);
+ EVP_PKEY_CTX_free(pctx);
+ if (j<=0)
+ {
+ al=SSL_AD_DECRYPT_ERROR;
+ SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,
+ SSL_R_BAD_ECDSA_SIGNATURE);
+ goto f_err;
+ }
+ }
+ else
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,ERR_R_INTERNAL_ERROR);
al=SSL_AD_UNSUPPORTED_CERTIFICATE;
/* SSL3_ST_SW_CERT_B */
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}
+#ifndef OPENSSL_NO_TLSEXT
+int ssl3_send_newsession_ticket(SSL *s)
+ {
+ if (s->state == SSL3_ST_SW_SESSION_TICKET_A)
+ {
+ unsigned char *p, *senc, *macstart;
+ int len, slen;
+ unsigned int hlen;
+ EVP_CIPHER_CTX ctx;
+ HMAC_CTX hctx;
+
+ /* get session encoding length */
+ slen = i2d_SSL_SESSION(s->session, NULL);
+ /* Some length values are 16 bits, so forget it if session is
+ * too long
+ */
+ if (slen > 0xFF00)
+ return -1;
+ /* Grow buffer if need be: the length calculation is as
+ * follows 1 (size of message name) + 3 (message length
+ * bytes) + 4 (ticket lifetime hint) + 2 (ticket length) +
+ * 16 (key name) + max_iv_len (iv length) +
+ * session_length + max_enc_block_size (max encrypted session
+ * length) + max_md_size (HMAC).
+ */
+ if (!BUF_MEM_grow(s->init_buf,
+ 26 + EVP_MAX_IV_LENGTH + EVP_MAX_BLOCK_LENGTH +
+ EVP_MAX_MD_SIZE + slen))
+ return -1;
+ senc = OPENSSL_malloc(slen);
+ if (!senc)
+ return -1;
+ p = senc;
+ i2d_SSL_SESSION(s->session, &p);
+
+ p=(unsigned char *)s->init_buf->data;
+ /* do the header */
+ *(p++)=SSL3_MT_NEWSESSION_TICKET;
+ /* Skip message length for now */
+ p += 3;
+ l2n(s->session->tlsext_tick_lifetime_hint, p);
+ /* Skip ticket length for now */
+ p += 2;
+ /* Output key name */
+ macstart = p;
+ memcpy(p, s->ctx->tlsext_tick_key_name, 16);
+ p += 16;
+ /* Generate and output IV */
+ RAND_pseudo_bytes(p, 16);
+ EVP_CIPHER_CTX_init(&ctx);
+ /* Encrypt session data */
+ EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
+ s->ctx->tlsext_tick_aes_key, p);
+ p += 16;
+ EVP_EncryptUpdate(&ctx, p, &len, senc, slen);
+ p += len;
+ EVP_EncryptFinal(&ctx, p, &len);
+ p += len;
+ EVP_CIPHER_CTX_cleanup(&ctx);
+
+ HMAC_CTX_init(&hctx);
+ HMAC_Init_ex(&hctx, s->ctx->tlsext_tick_hmac_key, 16,
+ tlsext_tick_md(), NULL);
+ HMAC_Update(&hctx, macstart, p - macstart);
+ HMAC_Final(&hctx, p, &hlen);
+ HMAC_CTX_cleanup(&hctx);
+
+ p += hlen;
+ /* Now write out lengths: p points to end of data written */
+ /* Total length */
+ len = p - (unsigned char *)s->init_buf->data;
+ p=(unsigned char *)s->init_buf->data + 1;
+ l2n3(len - 4, p); /* Message length */
+ p += 4;
+ s2n(len - 10, p); /* Ticket length */
+
+ /* number of bytes to write */
+ s->init_num= len;
+ s->state=SSL3_ST_SW_SESSION_TICKET_B;
+ s->init_off=0;
+ OPENSSL_free(senc);
+ }
+
+ /* SSL3_ST_SW_SESSION_TICKET_B */
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+ }
+
+int ssl3_send_cert_status(SSL *s)
+ {
+ if (s->state == SSL3_ST_SW_CERT_STATUS_A)
+ {
+ unsigned char *p;
+ /* Grow buffer if need be: the length calculation is as
+ * follows 1 (message type) + 3 (message length) +
+ * 1 (ocsp response type) + 3 (ocsp response length)
+ * + (ocsp response)
+ */
+ if (!BUF_MEM_grow(s->init_buf, 8 + s->tlsext_ocsp_resplen))
+ return -1;
+
+ p=(unsigned char *)s->init_buf->data;
+
+ /* do the header */
+ *(p++)=SSL3_MT_CERTIFICATE_STATUS;
+ /* message length */
+ l2n3(s->tlsext_ocsp_resplen + 4, p);
+ /* status type */
+ *(p++)= s->tlsext_status_type;
+ /* length of OCSP response */
+ l2n3(s->tlsext_ocsp_resplen, p);
+ /* actual response */
+ memcpy(p, s->tlsext_ocsp_resp, s->tlsext_ocsp_resplen);
+ /* number of bytes to write */
+ s->init_num = 8 + s->tlsext_ocsp_resplen;
+ s->state=SSL3_ST_SW_CERT_STATUS_B;
+ s->init_off = 0;
+ }
+
+ /* SSL3_ST_SW_CERT_STATUS_B */
+ return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
+ }
+#endif
projects / openssl.git / blobdiff