#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
+#ifndef OPENSSL_NO_EC
#ifdef OPENSSL_NO_EC2M
# include <openssl/ec.h>
#endif
+#endif
#include <openssl/ocsp.h>
#include <openssl/rand.h>
#include "ssl_locl.h"
TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2
};
-static const unsigned char eccurves_default[] = {
-# ifndef OPENSSL_NO_EC2M
- 0, 14, /* sect571r1 (14) */
- 0, 13, /* sect571k1 (13) */
-# endif
+/* The client's default curves / the server's 'auto' curves. */
+static const unsigned char eccurves_auto[] = {
+ /* Prefer P-256 which has the fastest and most secure implementations. */
+ 0, 23, /* secp256r1 (23) */
+ /* Other >= 256-bit prime curves. */
0, 25, /* secp521r1 (25) */
0, 28, /* brainpool512r1 (28) */
+ 0, 27, /* brainpoolP384r1 (27) */
+ 0, 24, /* secp384r1 (24) */
+ 0, 26, /* brainpoolP256r1 (26) */
+ 0, 22, /* secp256k1 (22) */
# ifndef OPENSSL_NO_EC2M
+ /* >= 256-bit binary curves. */
+ 0, 14, /* sect571r1 (14) */
+ 0, 13, /* sect571k1 (13) */
0, 11, /* sect409k1 (11) */
0, 12, /* sect409r1 (12) */
+ 0, 9, /* sect283k1 (9) */
+ 0, 10, /* sect283r1 (10) */
# endif
+};
+
+static const unsigned char eccurves_all[] = {
+ /* Prefer P-256 which has the fastest and most secure implementations. */
+ 0, 23, /* secp256r1 (23) */
+ /* Other >= 256-bit prime curves. */
+ 0, 25, /* secp521r1 (25) */
+ 0, 28, /* brainpool512r1 (28) */
0, 27, /* brainpoolP384r1 (27) */
0, 24, /* secp384r1 (24) */
+ 0, 26, /* brainpoolP256r1 (26) */
+ 0, 22, /* secp256k1 (22) */
# ifndef OPENSSL_NO_EC2M
+ /* >= 256-bit binary curves. */
+ 0, 14, /* sect571r1 (14) */
+ 0, 13, /* sect571k1 (13) */
+ 0, 11, /* sect409k1 (11) */
+ 0, 12, /* sect409r1 (12) */
0, 9, /* sect283k1 (9) */
0, 10, /* sect283r1 (10) */
# endif
- 0, 26, /* brainpoolP256r1 (26) */
- 0, 22, /* secp256k1 (22) */
- 0, 23, /* secp256r1 (23) */
+ /*
+ * Remaining curves disabled by default but still permitted if set
+ * via an explicit callback or parameters.
+ */
+ 0, 20, /* secp224k1 (20) */
+ 0, 21, /* secp224r1 (21) */
+ 0, 18, /* secp192k1 (18) */
+ 0, 19, /* secp192r1 (19) */
+ 0, 15, /* secp160k1 (15) */
+ 0, 16, /* secp160r1 (16) */
+ 0, 17, /* secp160r2 (17) */
# ifndef OPENSSL_NO_EC2M
0, 8, /* sect239k1 (8) */
0, 6, /* sect233k1 (6) */
0, 7, /* sect233r1 (7) */
-# endif
- 0, 20, /* secp224k1 (20) */
- 0, 21, /* secp224r1 (21) */
-# ifndef OPENSSL_NO_EC2M
0, 4, /* sect193r1 (4) */
0, 5, /* sect193r2 (5) */
-# endif
- 0, 18, /* secp192k1 (18) */
- 0, 19, /* secp192r1 (19) */
-# ifndef OPENSSL_NO_EC2M
0, 1, /* sect163k1 (1) */
0, 2, /* sect163r1 (2) */
0, 3, /* sect163r2 (3) */
# endif
- 0, 15, /* secp160k1 (15) */
- 0, 16, /* secp160r1 (16) */
- 0, 17, /* secp160r2 (17) */
};
static const unsigned char suiteb_curves[] = {
# ifdef OPENSSL_FIPS
if (FIPS_mode()) {
*pcurves = fips_curves_default;
- *pcurveslen = sizeof(fips_curves_default);
+ pcurveslen = sizeof(fips_curves_default);
} else
# endif
{
- *pcurves = eccurves_default;
- pcurveslen = sizeof(eccurves_default);
+ if (!s->server || (s->cert && s->cert->ecdh_tmp_auto)) {
+ *pcurves = eccurves_auto;
+ pcurveslen = sizeof(eccurves_auto);
+ } else {
+ *pcurves = eccurves_all;
+ pcurveslen = sizeof(eccurves_all);
+ }
}
}
}
size_t i;
int nid;
char etmp[20];
+ if (elem == NULL)
+ return 0;
if (narg->nidcnt == MAX_CURVELIST)
return 0;
if (len > (int)(sizeof(etmp) - 1))
for (j = 0; j <= 1; j++) {
if (!tls1_get_curvelist(s, j, &pcurves, &num_curves))
return 0;
+ if (j == 1 && num_curves == 0) {
+ /*
+ * If we've not received any curves then skip this check.
+ * RFC 4492 does not require the supported elliptic curves extension
+ * so if it is not sent we can just choose any curve.
+ * It is invalid to send an empty list in the elliptic curves
+ * extension, so num_curves == 0 always means no extension.
+ */
+ break;
+ }
for (i = 0; i < num_curves; i++, pcurves += 2) {
if (pcurves[0] == curve_id[0] && pcurves[1] == curve_id[1])
break;
unsigned long size_str;
long lenmax;
- /*-
- * check for enough space.
- * 4 for the servername type and entension length
- * 2 for servernamelist length
- * 1 for the hostname type
- * 2 for hostname length
- * + hostname length
- */
+ /*-
+ * check for enough space.
+ * 4 for the servername type and entension length
+ * 2 for servernamelist length
+ * 1 for the hostname type
+ * 2 for hostname length
+ * + hostname length
+ */
if ((lenmax = limit - ret - 9) < 0
|| (size_str =
return NULL;
}
- /*-
- * check for enough space.
- * 4 for the srp type type and entension length
- * 1 for the srp user identity
- * + srp user identity length
- */
+ /*-
+ * check for enough space.
+ * 4 for the srp type type and entension length
+ * 1 for the srp user identity
+ * + srp user identity length
+ */
if ((limit - ret - 5 - login_len) < 0)
return NULL;
return NULL;
s2n(TLSEXT_TYPE_heartbeat, ret);
s2n(1, ret);
- /*-
- * Set mode:
- * 1: peer may send requests
- * 2: peer not allowed to send requests
- */
+ /*-
+ * Set mode:
+ * 1: peer may send requests
+ * 2: peer not allowed to send requests
+ */
if (s->tlsext_heartbeat & SSL_TLSEXT_HB_DONT_RECV_REQUESTS)
*(ret++) = SSL_TLSEXT_HB_DONT_SEND_REQUESTS;
else
return NULL;
s2n(TLSEXT_TYPE_heartbeat, ret);
s2n(1, ret);
- /*-
- * Set mode:
- * 1: peer may send requests
- * 2: peer not allowed to send requests
- */
+ /*-
+ * Set mode:
+ * 1: peer may send requests
+ * 2: peer not allowed to send requests
+ */
if (s->tlsext_heartbeat & SSL_TLSEXT_HB_DONT_RECV_REQUESTS)
*(ret++) = SSL_TLSEXT_HB_DONT_SEND_REQUESTS;
else
else if (type == TLSEXT_TYPE_next_proto_neg &&
s->s3->tmp.finish_md_len == 0 &&
s->s3->alpn_selected == NULL) {
- /*-
- * We shouldn't accept this extension on a
- * renegotiation.
- *
- * s->new_session will be set on renegotiation, but we
- * probably shouldn't rely that it couldn't be set on
- * the initial renegotation too in certain cases (when
- * there's some other reason to disallow resuming an
- * earlier session -- the current code won't be doing
- * anything like that, but this might change).
- *
- * A valid sign that there's been a previous handshake
- * in this connection is if s->s3->tmp.finish_md_len >
- * 0. (We are talking about a check that will happen
- * in the Hello protocol round, well before a new
- * Finished message could have been computed.)
- */
+ /*-
+ * We shouldn't accept this extension on a
+ * renegotiation.
+ *
+ * s->new_session will be set on renegotiation, but we
+ * probably shouldn't rely that it couldn't be set on
+ * the initial renegotation too in certain cases (when
+ * there's some other reason to disallow resuming an
+ * earlier session -- the current code won't be doing
+ * anything like that, but this might change).
+ *
+ * A valid sign that there's been a previous handshake
+ * in this connection is if s->s3->tmp.finish_md_len >
+ * 0. (We are talking about a check that will happen
+ * in the Hello protocol round, well before a new
+ * Finished message could have been computed.)
+ */
s->s3->next_proto_neg_seen = 1;
}
# endif
*al = TLS1_AD_DECODE_ERROR;
return 0;
}
- /*-
- * The extension data consists of:
- * uint16 list_length
- * uint8 proto_length;
- * uint8 proto[proto_length];
- */
+ /*-
+ * The extension data consists of:
+ * uint16 list_length
+ * uint8 proto_length;
+ * uint8 proto[proto_length];
+ */
len = data[0];
len <<= 8;
len |= data[1];
if (s->cert->shared_sigalgs) {
OPENSSL_free(s->cert->shared_sigalgs);
s->cert->shared_sigalgs = NULL;
+ s->cert->shared_sigalgslen = 0;
}
/* Clear certificate digests and validity flags */
for (i = 0; i < SSL_PKEY_NUM; i++) {
if (c->shared_sigalgs) {
OPENSSL_free(c->shared_sigalgs);
c->shared_sigalgs = NULL;
+ c->shared_sigalgslen = 0;
}
/* If client use client signature algorithms if not NULL */
if (!s->server && c->client_sigalgs && !is_suiteb) {
preflen = c->peer_sigalgslen;
}
nmatch = tls12_do_shared_sigalgs(NULL, pref, preflen, allow, allowlen);
- if (!nmatch)
- return 1;
- salgs = OPENSSL_malloc(nmatch * sizeof(TLS_SIGALGS));
- if (!salgs)
- return 0;
- nmatch = tls12_do_shared_sigalgs(salgs, pref, preflen, allow, allowlen);
+ if (nmatch) {
+ salgs = OPENSSL_malloc(nmatch * sizeof(TLS_SIGALGS));
+ if (!salgs)
+ return 0;
+ nmatch = tls12_do_shared_sigalgs(salgs, pref, preflen, allow, allowlen);
+ } else {
+ salgs = NULL;
+ }
c->shared_sigalgs = salgs;
c->shared_sigalgslen = nmatch;
return 1;
memcpy(bp, pl, payload);
bp += payload;
/* Random padding */
- RAND_pseudo_bytes(bp, padding);
+ if (RAND_pseudo_bytes(bp, padding) < 0) {
+ OPENSSL_free(buffer);
+ return -1;
+ }
r = ssl3_write_bytes(s, TLS1_RT_HEARTBEAT, buffer,
3 + payload + padding);
int tls1_heartbeat(SSL *s)
{
unsigned char *buf, *p;
- int ret;
+ int ret = -1;
unsigned int payload = 18; /* Sequence number + random bytes */
unsigned int padding = 16; /* Use minimum padding */
*/
OPENSSL_assert(payload + padding <= 16381);
- /*-
- * Create HeartBeat message, we just use a sequence number
- * as payload to distuingish different messages and add
- * some random stuff.
- * - Message Type, 1 byte
- * - Payload Length, 2 bytes (unsigned int)
- * - Payload, the sequence number (2 bytes uint)
- * - Payload, random bytes (16 bytes uint)
- * - Padding
- */
+ /*-
+ * Create HeartBeat message, we just use a sequence number
+ * as payload to distuingish different messages and add
+ * some random stuff.
+ * - Message Type, 1 byte
+ * - Payload Length, 2 bytes (unsigned int)
+ * - Payload, the sequence number (2 bytes uint)
+ * - Payload, random bytes (16 bytes uint)
+ * - Padding
+ */
buf = OPENSSL_malloc(1 + 2 + payload + padding);
p = buf;
/* Message Type */
/* Sequence number */
s2n(s->tlsext_hb_seq, p);
/* 16 random bytes */
- RAND_pseudo_bytes(p, 16);
+ if (RAND_pseudo_bytes(p, 16) < 0) {
+ SSLerr(SSL_F_TLS1_HEARTBEAT, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
p += 16;
/* Random padding */
- RAND_pseudo_bytes(p, padding);
+ if (RAND_pseudo_bytes(p, padding) < 0) {
+ SSLerr(SSL_F_TLS1_HEARTBEAT, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
ret = ssl3_write_bytes(s, TLS1_RT_HEARTBEAT, buf, 3 + payload + padding);
if (ret >= 0) {
s->tlsext_hb_pending = 1;
}
+err:
OPENSSL_free(buf);
return ret;
size_t i;
char etmp[20], *p;
int sig_alg, hash_alg;
+ if (elem == NULL)
+ return 0;
if (sarg->sigalgcnt == MAX_SIGALGLEN)
return 0;
if (len > (int)(sizeof(etmp) - 1))
# endif
} else {
if (!x || !pk)
- goto end;
+ return 0;
idx = ssl_cert_type(x, pk);
if (idx == -1)
- goto end;
+ return 0;
cpk = c->pkeys + idx;
if (c->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT)
check_flags = CERT_PKEY_STRICT_FLAGS;
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