}
#ifndef OPENSSL_NO_EC
+
static int nid_list[] =
{
NID_sect163k1, /* sect163k1 (1) */
NID_secp384r1, /* secp384r1 (24) */
NID_secp521r1 /* secp521r1 (25) */
};
-
+
+static int pref_list[] =
+ {
+ NID_sect571r1, /* sect571r1 (14) */
+ NID_sect571k1, /* sect571k1 (13) */
+ NID_secp521r1, /* secp521r1 (25) */
+ NID_sect409k1, /* sect409k1 (11) */
+ NID_sect409r1, /* sect409r1 (12) */
+ NID_secp384r1, /* secp384r1 (24) */
+ NID_sect283k1, /* sect283k1 (9) */
+ NID_sect283r1, /* sect283r1 (10) */
+ NID_secp256k1, /* secp256k1 (22) */
+ NID_X9_62_prime256v1, /* secp256r1 (23) */
+ NID_sect239k1, /* sect239k1 (8) */
+ NID_sect233k1, /* sect233k1 (6) */
+ NID_sect233r1, /* sect233r1 (7) */
+ NID_secp224k1, /* secp224k1 (20) */
+ NID_secp224r1, /* secp224r1 (21) */
+ NID_sect193r1, /* sect193r1 (4) */
+ NID_sect193r2, /* sect193r2 (5) */
+ NID_secp192k1, /* secp192k1 (18) */
+ NID_X9_62_prime192v1, /* secp192r1 (19) */
+ NID_sect163k1, /* sect163k1 (1) */
+ NID_sect163r1, /* sect163r1 (2) */
+ NID_sect163r2, /* sect163r2 (3) */
+ NID_secp160k1, /* secp160k1 (15) */
+ NID_secp160r1, /* secp160r1 (16) */
+ NID_secp160r2, /* secp160r2 (17) */
+ };
+
int tls1_ec_curve_id2nid(int curve_id)
{
/* ECC curves from draft-ietf-tls-ecc-12.txt (Oct. 17, 2005) */
#endif /* OPENSSL_NO_EC */
#ifndef OPENSSL_NO_TLSEXT
+
+/* List of supported signature algorithms and hashes. Should make this
+ * customisable at some point, for now include everything we support.
+ */
+
+#ifdef OPENSSL_NO_RSA
+#define tlsext_sigalg_rsa(md) /* */
+#else
+#define tlsext_sigalg_rsa(md) md, TLSEXT_signature_rsa,
+#endif
+
+#ifdef OPENSSL_NO_DSA
+#define tlsext_sigalg_dsa(md) /* */
+#else
+#define tlsext_sigalg_dsa(md) md, TLSEXT_signature_dsa,
+#endif
+
+#ifdef OPENSSL_NO_ECDSA
+#define tlsext_sigalg_ecdsa(md) /* */
+#else
+#define tlsext_sigalg_ecdsa(md) md, TLSEXT_signature_dsa,
+#endif
+
+#define tlsext_sigalg(md) \
+ tlsext_sigalg_rsa(md) \
+ tlsext_sigalg_dsa(md) \
+ tlsext_sigalg_ecdsa(md)
+
+static unsigned char tls12_sigalgs[] = {
+#ifndef OPENSSL_NO_SHA512
+ tlsext_sigalg(TLSEXT_hash_sha512)
+ tlsext_sigalg(TLSEXT_hash_sha384)
+#endif
+#ifndef OPENSSL_NO_SHA256
+ tlsext_sigalg(TLSEXT_hash_sha256)
+ tlsext_sigalg(TLSEXT_hash_sha224)
+#endif
+#ifndef OPENSSL_NO_SHA
+ tlsext_sigalg(TLSEXT_hash_sha1)
+#endif
+#ifndef OPENSSL_NO_MD5
+ tlsext_sigalg_rsa(TLSEXT_hash_md5)
+#endif
+};
+
+int tls12_get_req_sig_algs(SSL *s, unsigned char *p)
+ {
+ size_t slen = sizeof(tls12_sigalgs);
+#ifdef OPENSSL_FIPS
+ /* If FIPS mode don't include MD5 which is last */
+ if (FIPS_mode())
+ slen -= 2;
+#endif
+ if (p)
+ memcpy(p, tls12_sigalgs, slen);
+ return (int)slen;
+ }
+
unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned char *limit)
{
int extdatalen=0;
ret += el;
}
+#ifndef OPENSSL_NO_SRP
+#define MIN(x,y) (((x)<(y))?(x):(y))
+ /* we add SRP username the first time only if we have one! */
+ if (s->srp_ctx.login != NULL)
+ {/* Add TLS extension SRP username to the Client Hello message */
+ int login_len = MIN(strlen(s->srp_ctx.login) + 1, 255);
+ long lenmax;
+
+ if ((lenmax = limit - ret - 5) < 0) return NULL;
+ if (login_len > lenmax) return NULL;
+ if (login_len > 255)
+ {
+ SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
+ return NULL;
+ }
+ s2n(TLSEXT_TYPE_srp,ret);
+ s2n(login_len+1,ret);
+
+ (*ret++) = (unsigned char) MIN(strlen(s->srp_ctx.login), 254);
+ memcpy(ret, s->srp_ctx.login, MIN(strlen(s->srp_ctx.login), 254));
+ ret+=login_len;
+ }
+#endif
+
#ifndef OPENSSL_NO_EC
if (s->tlsext_ecpointformatlist != NULL &&
s->version != DTLS1_VERSION)
}
skip_ext:
+ if (TLS1_get_version(s) >= TLS1_2_VERSION)
+ {
+ if ((size_t)(limit - ret) < sizeof(tls12_sigalgs) + 6)
+ return NULL;
+ s2n(TLSEXT_TYPE_signature_algorithms,ret);
+ s2n(sizeof(tls12_sigalgs) + 2, ret);
+ s2n(sizeof(tls12_sigalgs), ret);
+ memcpy(ret, tls12_sigalgs, sizeof(tls12_sigalgs));
+ ret += sizeof(tls12_sigalgs);
+ }
+
#ifdef TLSEXT_TYPE_opaque_prf_input
if (s->s3->client_opaque_prf_input != NULL &&
s->version != DTLS1_VERSION)
unsigned short len;
unsigned char *data = *p;
int renegotiate_seen = 0;
+ int sigalg_seen = 0;
s->servername_done = 0;
s->tlsext_status_type = -1;
}
}
+#ifndef OPENSSL_NO_SRP
+ else if (type == TLSEXT_TYPE_srp)
+ {
+ if (size > 0)
+ {
+ len = data[0];
+ if ((s->srp_ctx.login = OPENSSL_malloc(len+1)) == NULL)
+ return -1;
+ memcpy(s->srp_ctx.login, &data[1], len);
+ s->srp_ctx.login[len]='\0';
+ }
+ }
+#endif
#ifndef OPENSSL_NO_EC
else if (type == TLSEXT_TYPE_ec_point_formats &&
return 0;
renegotiate_seen = 1;
}
+ else if (type == TLSEXT_TYPE_signature_algorithms)
+ {
+ int dsize;
+ if (sigalg_seen || size < 2)
+ {
+ *al = SSL_AD_DECODE_ERROR;
+ return 0;
+ }
+ sigalg_seen = 1;
+ n2s(data,dsize);
+ size -= 2;
+ if (dsize != size || dsize & 1)
+ {
+ *al = SSL_AD_DECODE_ERROR;
+ return 0;
+ }
+ if (!tls1_process_sigalgs(s, data, dsize))
+ {
+ *al = SSL_AD_DECODE_ERROR;
+ return 0;
+ }
+ }
else if (type == TLSEXT_TYPE_status_request &&
s->version != DTLS1_VERSION && s->ctx->tlsext_status_cb)
{
/* we support all named elliptic curves in draft-ietf-tls-ecc-12 */
if (s->tlsext_ellipticcurvelist != NULL) OPENSSL_free(s->tlsext_ellipticcurvelist);
- s->tlsext_ellipticcurvelist_length = sizeof(nid_list)/sizeof(nid_list[0]) * 2;
+ s->tlsext_ellipticcurvelist_length = sizeof(pref_list)/sizeof(pref_list[0]) * 2;
if ((s->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
{
s->tlsext_ellipticcurvelist_length = 0;
SSLerr(SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT,ERR_R_MALLOC_FAILURE);
return -1;
}
- for (i = 1, j = s->tlsext_ellipticcurvelist; (unsigned int)i <=
- sizeof(nid_list)/sizeof(nid_list[0]); i++)
- s2n(i,j);
+ for (i = 0, j = s->tlsext_ellipticcurvelist; (unsigned int)i <
+ sizeof(pref_list)/sizeof(pref_list[0]); i++)
+ {
+ int id = tls1_ec_nid2curve_id(pref_list[i]);
+ s2n(id,j);
+ }
}
#endif /* OPENSSL_NO_EC */
return 0;
}
+/* Tables to translate from NIDs to TLS v1.2 ids */
+
+typedef struct
+ {
+ int nid;
+ int id;
+ } tls12_lookup;
+
+static tls12_lookup tls12_md[] = {
+#ifndef OPENSSL_NO_MD5
+ {NID_md5, TLSEXT_hash_md5},
+#endif
+#ifndef OPENSSL_NO_SHA
+ {NID_sha1, TLSEXT_hash_sha1},
+#endif
+#ifndef OPENSSL_NO_SHA256
+ {NID_sha224, TLSEXT_hash_sha224},
+ {NID_sha256, TLSEXT_hash_sha256},
+#endif
+#ifndef OPENSSL_NO_SHA512
+ {NID_sha384, TLSEXT_hash_sha384},
+ {NID_sha512, TLSEXT_hash_sha512}
+#endif
+};
+
+static tls12_lookup tls12_sig[] = {
+#ifndef OPENSSL_NO_RSA
+ {EVP_PKEY_RSA, TLSEXT_signature_rsa},
+#endif
+#ifndef OPENSSL_NO_RSA
+ {EVP_PKEY_DSA, TLSEXT_signature_dsa},
+#endif
+#ifndef OPENSSL_NO_ECDSA
+ {EVP_PKEY_EC, TLSEXT_signature_ecdsa}
+#endif
+};
+
+static int tls12_find_id(int nid, tls12_lookup *table, size_t tlen)
+ {
+ size_t i;
+ for (i = 0; i < tlen; i++)
+ {
+ if (table[i].nid == nid)
+ return table[i].id;
+ }
+ return -1;
+ }
+#if 0
+static int tls12_find_nid(int id, tls12_lookup *table, size_t tlen)
+ {
+ size_t i;
+ for (i = 0; i < tlen; i++)
+ {
+ if (table[i].id == id)
+ return table[i].nid;
+ }
+ return -1;
+ }
+#endif
+
+int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk, const EVP_MD *md)
+ {
+ int sig_id, md_id;
+ md_id = tls12_find_id(EVP_MD_type(md), tls12_md,
+ sizeof(tls12_md)/sizeof(tls12_lookup));
+ if (md_id == -1)
+ return 0;
+ sig_id = tls12_get_sigid(pk);
+ if (sig_id == -1)
+ return 0;
+ p[0] = (unsigned char)md_id;
+ p[1] = (unsigned char)sig_id;
+ return 1;
+ }
+
+int tls12_get_sigid(const EVP_PKEY *pk)
+ {
+ return tls12_find_id(pk->type, tls12_sig,
+ sizeof(tls12_sig)/sizeof(tls12_lookup));
+ }
+
+const EVP_MD *tls12_get_hash(unsigned char hash_alg)
+ {
+ switch(hash_alg)
+ {
+#ifndef OPENSSL_NO_MD5
+ case TLSEXT_hash_md5:
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode())
+ return NULL;
+#endif
+ return EVP_md5();
+#endif
+#ifndef OPENSSL_NO_SHA
+ case TLSEXT_hash_sha1:
+ return EVP_sha1();
+#endif
+#ifndef OPENSSL_NO_SHA256
+ case TLSEXT_hash_sha224:
+ return EVP_sha224();
+
+ case TLSEXT_hash_sha256:
+ return EVP_sha256();
+#endif
+#ifndef OPENSSL_NO_SHA512
+ case TLSEXT_hash_sha384:
+ return EVP_sha384();
+
+ case TLSEXT_hash_sha512:
+ return EVP_sha512();
+#endif
+ default:
+ return NULL;
+
+ }
+ }
+
+/* Set preferred digest for each key type */
+
+int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize)
+ {
+ int i, idx;
+ const EVP_MD *md;
+ CERT *c = s->cert;
+ /* Extension ignored for TLS versions below 1.2 */
+ if (TLS1_get_version(s) < TLS1_2_VERSION)
+ return 1;
+ /* Should never happen */
+ if (!c)
+ return 0;
+
+ c->pkeys[SSL_PKEY_DSA_SIGN].digest = NULL;
+ c->pkeys[SSL_PKEY_RSA_SIGN].digest = NULL;
+ c->pkeys[SSL_PKEY_RSA_ENC].digest = NULL;
+ c->pkeys[SSL_PKEY_ECC].digest = NULL;
+
+ for (i = 0; i < dsize; i += 2)
+ {
+ unsigned char hash_alg = data[i], sig_alg = data[i+1];
+
+ switch(sig_alg)
+ {
+#ifndef OPENSSL_NO_RSA
+ case TLSEXT_signature_rsa:
+ idx = SSL_PKEY_RSA_SIGN;
+ break;
+#endif
+#ifndef OPENSSL_NO_DSA
+ case TLSEXT_signature_dsa:
+ idx = SSL_PKEY_DSA_SIGN;
+ break;
+#endif
+#ifndef OPENSSL_NO_ECDSA
+ case TLSEXT_signature_ecdsa:
+ idx = SSL_PKEY_ECC;
+ break;
+#endif
+ default:
+ continue;
+ }
+
+ if (c->pkeys[idx].digest == NULL)
+ {
+ md = tls12_get_hash(hash_alg);
+ if (md)
+ {
+ c->pkeys[idx].digest = md;
+ if (idx == SSL_PKEY_RSA_SIGN)
+ c->pkeys[SSL_PKEY_RSA_ENC].digest = md;
+ }
+ }
+
+ }
+
+
+ /* Set any remaining keys to default values. NOTE: if alg is not
+ * supported it stays as NULL.
+ */
+#ifndef OPENSSL_NO_DSA
+ if (!c->pkeys[SSL_PKEY_DSA_SIGN].digest)
+ c->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_dss1();
+#endif
+#ifndef OPENSSL_NO_RSA
+ if (!c->pkeys[SSL_PKEY_RSA_SIGN].digest)
+ {
+ c->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
+ c->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
+ }
+#endif
+#ifndef OPENSSL_NO_ECDSA
+ if (!c->pkeys[SSL_PKEY_ECC].digest)
+ c->pkeys[SSL_PKEY_ECC].digest = EVP_ecdsa();
+#endif
+ return 1;
+ }
+
#endif
projects / openssl.git / blobdiff