26 #if !defined(POLARSSL_CONFIG_FILE)
29 #include POLARSSL_CONFIG_FILE
32 #if defined(POLARSSL_SSL_SRV_C)
36 #if defined(POLARSSL_ECP_C)
40 #if defined(POLARSSL_PLATFORM_C)
43 #define polarssl_malloc malloc
44 #define polarssl_free free
50 #if defined(POLARSSL_HAVE_TIME)
54 #if defined(POLARSSL_SSL_SESSION_TICKETS)
56 static void polarssl_zeroize(
void *v,
size_t n ) {
57 volatile unsigned char *p = v;
while( n-- ) *p++ = 0;
68 static int ssl_save_session(
const ssl_session *session,
69 unsigned char *buf,
size_t buf_len,
72 unsigned char *p = buf;
73 size_t left = buf_len;
74 #if defined(POLARSSL_X509_CRT_PARSE_C)
85 #if defined(POLARSSL_X509_CRT_PARSE_C)
91 if( left < 3 + cert_len )
94 *p++ = (
unsigned char)( cert_len >> 16 & 0xFF );
95 *p++ = (
unsigned char)( cert_len >> 8 & 0xFF );
96 *p++ = (
unsigned char)( cert_len & 0xFF );
113 const unsigned char *buf,
size_t len )
115 const unsigned char *p = buf;
116 const unsigned char *
const end = buf + len;
117 #if defined(POLARSSL_X509_CRT_PARSE_C)
127 #if defined(POLARSSL_X509_CRT_PARSE_C)
131 cert_len = ( p[0] << 16 ) | ( p[1] << 8 ) | p[2];
142 if( p + cert_len > end )
153 p, cert_len ) ) != 0 )
183 static int ssl_write_ticket(
ssl_context *ssl,
size_t *tlen )
186 unsigned char *
const start = ssl->
out_msg + 10;
187 unsigned char *p = start;
188 unsigned char *state;
189 unsigned char iv[16];
190 size_t clear_len, enc_len, pad_len, i;
202 if( ( ret = ssl->
f_rng( ssl->
p_rng, p, 16 ) ) != 0 )
220 SSL_DEBUG_BUF( 3,
"session ticket cleartext", state, clear_len );
223 pad_len = 16 - clear_len % 16;
224 enc_len = clear_len + pad_len;
225 for( i = clear_len; i < enc_len; i++ )
226 state[i] = (
unsigned char) pad_len;
230 enc_len, iv, state, state ) ) != 0 )
236 *p++ = (
unsigned char)( ( enc_len >> 8 ) & 0xFF );
237 *p++ = (
unsigned char)( ( enc_len ) & 0xFF );
246 SSL_DEBUG_BUF( 3,
"session ticket structure", start, *tlen );
260 unsigned char *key_name = buf;
261 unsigned char *iv = buf + 16;
262 unsigned char *enc_len_p = iv + 16;
263 unsigned char *ticket = enc_len_p + 2;
265 unsigned char computed_mac[32];
266 size_t enc_len, clear_len, i;
267 unsigned char pad_len, diff;
271 if( len < 34 || ssl->ticket_keys == NULL )
274 enc_len = ( enc_len_p[0] << 8 ) | enc_len_p[1];
275 mac = ticket + enc_len;
277 if( len != enc_len + 66 )
282 for( i = 0; i < 16; i++ )
290 for( i = 0; i < 32; i++ )
291 diff |= mac[i] ^ computed_mac[i];
300 enc_len, iv, ticket, ticket ) ) != 0 )
306 pad_len = ticket[enc_len - 1];
309 for( i = 2; i < pad_len; i++ )
310 if( ticket[enc_len - i] != pad_len )
315 clear_len = enc_len - pad_len;
317 SSL_DEBUG_BUF( 3,
"session ticket cleartext", ticket, clear_len );
320 if( ( ret = ssl_load_session( &session, ticket, clear_len ) ) != 0 )
327 #if defined(POLARSSL_HAVE_TIME)
348 polarssl_zeroize( &session,
sizeof(
ssl_session ) );
354 #if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
360 const unsigned char*
name,
size_t len )
366 ret = ssl->
f_sni( ssl->
p_sni, ssl, name, len );
374 static int ssl_parse_servername_ext(
ssl_context *ssl,
375 const unsigned char *buf,
379 size_t servername_list_size, hostname_len;
380 const unsigned char *p;
384 servername_list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
385 if( servername_list_size + 2 != len )
392 while( servername_list_size > 0 )
394 hostname_len = ( ( p[1] << 8 ) | p[2] );
395 if( hostname_len + 3 > servername_list_size )
403 ret = ssl_sni_wrapper( ssl, p + 3, hostname_len );
414 servername_list_size -= hostname_len + 3;
415 p += hostname_len + 3;
418 if( servername_list_size != 0 )
428 static int ssl_parse_renegotiation_info(
ssl_context *ssl,
429 const unsigned char *buf,
436 if( len != 1 || buf[0] != 0x0 )
438 SSL_DEBUG_MSG( 1, (
"non-zero length renegotiated connection field" ) );
456 SSL_DEBUG_MSG( 1, (
"non-matching renegotiated connection field" ) );
468 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
469 static int ssl_parse_signature_algorithms_ext(
ssl_context *ssl,
470 const unsigned char *buf,
473 size_t sig_alg_list_size;
474 const unsigned char *p;
475 const unsigned char *end = buf + len;
479 sig_alg_list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
480 if( sig_alg_list_size + 2 != len ||
481 sig_alg_list_size % 2 != 0 )
494 for( p = buf + 2; p < end; p += 2 ) {
507 SSL_DEBUG_MSG( 3, (
"client hello v3, signature_algorithm ext: %d",
514 #if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
515 static int ssl_parse_supported_elliptic_curves(
ssl_context *ssl,
516 const unsigned char *buf,
519 size_t list_size, our_size;
520 const unsigned char *p;
523 list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
524 if( list_size + 2 != len ||
540 our_size = list_size / 2 + 1;
544 if( ( curves =
polarssl_malloc( our_size *
sizeof( *curves ) ) ) == NULL )
548 memset( (
void *) curves, 0, our_size *
sizeof( *curves ) );
552 while( list_size > 0 && our_size > 1 )
556 if( curve_info != NULL )
558 *curves++ = curve_info;
569 static int ssl_parse_supported_point_formats(
ssl_context *ssl,
570 const unsigned char *buf,
574 const unsigned char *p;
577 if( list_size + 1 != len )
584 while( list_size > 0 )
602 #if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
603 static int ssl_parse_max_fragment_length_ext(
ssl_context *ssl,
604 const unsigned char *buf,
619 #if defined(POLARSSL_SSL_TRUNCATED_HMAC)
620 static int ssl_parse_truncated_hmac_ext(
ssl_context *ssl,
621 const unsigned char *buf,
638 #if defined(POLARSSL_SSL_SESSION_TICKETS)
639 static int ssl_parse_session_ticket_ext(
ssl_context *ssl,
665 if( ( ret = ssl_parse_ticket( ssl, buf, len ) ) != 0 )
671 SSL_DEBUG_MSG( 3, (
"session successfully restored from ticket" ) );
682 #if defined(POLARSSL_SSL_ALPN)
684 const unsigned char *buf,
size_t len )
686 size_t list_len, cur_len, ours_len;
687 const unsigned char *theirs, *start, *end;
706 list_len = ( buf[0] << 8 ) | buf[1];
707 if( list_len != len - 2 )
715 for( ours = ssl->
alpn_list; *ours != NULL; ours++ )
717 ours_len = strlen( *ours );
718 for( theirs = start; theirs != end; theirs += cur_len )
730 if( cur_len == ours_len &&
731 memcmp( theirs, *ours, cur_len ) == 0 )
750 #if defined(POLARSSL_X509_CRT_PARSE_C)
754 #if defined(POLARSSL_ECDSA_C)
755 static int ssl_key_matches_curves(
pk_context *pk,
761 while( *crv != NULL )
763 if( (*crv)->grp_id == grp_id )
782 #if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
792 for( cur = list; cur != NULL; cur = cur->
next )
811 #if defined(POLARSSL_ECDSA_C)
834 static int ssl_ciphersuite_match(
ssl_context *ssl,
int suite_id,
840 if( suite_info == NULL )
842 SSL_DEBUG_MSG( 1, (
"ciphersuite info for %04x not found", suite_id ) );
850 #if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
857 #if defined(POLARSSL_KEY_EXCHANGE__SOME__PSK_ENABLED)
861 ssl->
f_psk == NULL &&
867 #if defined(POLARSSL_X509_CRT_PARSE_C)
875 if( ssl_pick_cert( ssl, suite_info ) != 0 )
879 *ciphersuite_info = suite_info;
883 #if defined(POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO)
884 static int ssl_parse_client_hello_v2(
ssl_context *ssl )
889 unsigned int ciph_len, sess_len, chal_len;
890 unsigned char *buf, *p;
891 const int *ciphersuites;
898 SSL_DEBUG_MSG( 1, (
"client hello v2 illegal for renegotiation" ) );
913 ( ( buf[0] & 0x7F ) << 8 ) | buf[1] ) );
914 SSL_DEBUG_MSG( 3, (
"client hello v2, max. version: [%d:%d]",
934 n = ( ( buf[0] << 8 ) | buf[1] ) & 0x7FFF;
936 if( n < 17 || n > 512 )
948 SSL_DEBUG_MSG( 1, (
"client only supports ssl smaller than minimum"
949 " [%d:%d] < [%d:%d]",
982 ciph_len = ( buf[0] << 8 ) | buf[1];
983 sess_len = ( buf[2] << 8 ) | buf[3];
984 chal_len = ( buf[4] << 8 ) | buf[5];
986 SSL_DEBUG_MSG( 3, (
"ciph_len: %d, sess_len: %d, chal_len: %d",
987 ciph_len, sess_len, chal_len ) );
992 if( ciph_len < 3 || ( ciph_len % 3 ) != 0 )
1004 if( chal_len < 8 || chal_len > 32 )
1010 if( n != 6 + ciph_len + sess_len + chal_len )
1017 buf + 6, ciph_len );
1019 buf + 6 + ciph_len, sess_len );
1021 buf + 6 + ciph_len + sess_len, chal_len );
1023 p = buf + 6 + ciph_len;
1036 for( i = 0, p = buf + 6; i < ciph_len; i += 3, p += 3 )
1040 SSL_DEBUG_MSG( 3, (
"received TLS_EMPTY_RENEGOTIATION_INFO " ) );
1043 SSL_DEBUG_MSG( 1, (
"received RENEGOTIATION SCSV during renegotiation" ) );
1056 ciphersuite_info = NULL;
1057 #if defined(POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
1058 for( j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3 )
1060 for( i = 0; ciphersuites[i] != 0; i++ )
1062 for( i = 0; ciphersuites[i] != 0; i++ )
1064 for( j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3 )
1068 p[1] != ( ( ciphersuites[i] >> 8 ) & 0xFF ) ||
1069 p[2] != ( ( ciphersuites[i] ) & 0xFF ) )
1072 if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
1073 &ciphersuite_info ) ) != 0 )
1076 if( ciphersuite_info != NULL )
1077 goto have_ciphersuite_v2;
1085 have_ciphersuite_v2:
1096 SSL_DEBUG_MSG( 1, (
"legacy renegotiation, breaking off handshake" ) );
1113 static int ssl_parse_client_hello(
ssl_context *ssl )
1118 unsigned int ciph_len, sess_len;
1119 unsigned int comp_len;
1120 unsigned int ext_len = 0;
1121 unsigned char *buf, *p, *ext;
1122 int renegotiation_info_seen = 0;
1123 int handshake_failure = 0;
1124 const int *ciphersuites;
1138 #if defined(POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO)
1139 if( ( buf[0] & 0x80 ) != 0 )
1140 return ssl_parse_client_hello_v2( ssl );
1148 ( buf[3] << 8 ) | buf[4] ) );
1149 SSL_DEBUG_MSG( 3, (
"client hello v3, protocol ver: [%d:%d]",
1172 n = ( buf[3] << 8 ) | buf[4];
1215 ( buf[1] << 16 ) | ( buf[2] << 8 ) | buf[3] ) );
1216 SSL_DEBUG_MSG( 3, (
"client hello v3, max. version: [%d:%d]",
1237 SSL_DEBUG_MSG( 1, (
"client only supports ssl smaller than minimum"
1238 " [%d:%d] < [%d:%d]",
1261 if( buf[1] != 0 || n != (
unsigned int) 4 + ( ( buf[2] << 8 ) | buf[3] ) )
1272 if( sess_len > 32 || sess_len > n - 42 )
1287 ciph_len = ( buf[39 + sess_len] << 8 )
1288 | ( buf[40 + sess_len] );
1290 if( ciph_len < 2 || ( ciph_len % 2 ) != 0 || ciph_len > n - 42 - sess_len )
1299 comp_len = buf[41 + sess_len + ciph_len];
1301 if( comp_len < 1 || comp_len > 16 ||
1302 comp_len > n - 42 - sess_len - ciph_len )
1311 if( n > 42 + sess_len + ciph_len + comp_len )
1313 ext_len = ( buf[42 + sess_len + ciph_len + comp_len] << 8 )
1314 | ( buf[43 + sess_len + ciph_len + comp_len] );
1316 if( ( ext_len > 0 && ext_len < 4 ) ||
1317 n != 44 + sess_len + ciph_len + comp_len + ext_len )
1320 SSL_DEBUG_BUF( 3,
"Ext", buf + 44 + sess_len + ciph_len + comp_len, ext_len);
1326 #if defined(POLARSSL_ZLIB_SUPPORT)
1327 for( i = 0; i < comp_len; ++i )
1340 buf + 38, sess_len );
1342 buf + 41 + sess_len, ciph_len );
1344 buf + 42 + sess_len + ciph_len, comp_len );
1349 for( i = 0, p = buf + 41 + sess_len; i < ciph_len; i += 2, p += 2 )
1353 SSL_DEBUG_MSG( 3, (
"received TLS_EMPTY_RENEGOTIATION_INFO " ) );
1356 SSL_DEBUG_MSG( 1, (
"received RENEGOTIATION SCSV during renegotiation" ) );
1368 ext = buf + 44 + sess_len + ciph_len + comp_len;
1372 unsigned int ext_id = ( ( ext[0] << 8 )
1374 unsigned int ext_size = ( ( ext[2] << 8 )
1377 if( ext_size + 4 > ext_len )
1384 #if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
1387 if( ssl->
f_sni == NULL )
1390 ret = ssl_parse_servername_ext( ssl, ext + 4, ext_size );
1398 renegotiation_info_seen = 1;
1400 ret = ssl_parse_renegotiation_info( ssl, ext + 4, ext_size );
1405 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
1407 SSL_DEBUG_MSG( 3, (
"found signature_algorithms extension" ) );
1411 ret = ssl_parse_signature_algorithms_ext( ssl, ext + 4, ext_size );
1417 #if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
1419 SSL_DEBUG_MSG( 3, (
"found supported elliptic curves extension" ) );
1421 ret = ssl_parse_supported_elliptic_curves( ssl, ext + 4, ext_size );
1427 SSL_DEBUG_MSG( 3, (
"found supported point formats extension" ) );
1430 ret = ssl_parse_supported_point_formats( ssl, ext + 4, ext_size );
1436 #if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
1438 SSL_DEBUG_MSG( 3, (
"found max fragment length extension" ) );
1440 ret = ssl_parse_max_fragment_length_ext( ssl, ext + 4, ext_size );
1446 #if defined(POLARSSL_SSL_TRUNCATED_HMAC)
1450 ret = ssl_parse_truncated_hmac_ext( ssl, ext + 4, ext_size );
1456 #if defined(POLARSSL_SSL_SESSION_TICKETS)
1460 ret = ssl_parse_session_ticket_ext( ssl, ext + 4, ext_size );
1466 #if defined(POLARSSL_SSL_ALPN)
1470 ret = ssl_parse_alpn_ext( ssl, ext + 4, ext_size );
1477 SSL_DEBUG_MSG( 3, (
"unknown extension found: %d (ignoring)",
1481 ext_len -= 4 + ext_size;
1482 ext += 4 + ext_size;
1484 if( ext_len > 0 && ext_len < 4 )
1497 SSL_DEBUG_MSG( 1, (
"legacy renegotiation, breaking off handshake" ) );
1498 handshake_failure = 1;
1502 renegotiation_info_seen == 0 )
1504 SSL_DEBUG_MSG( 1, (
"renegotiation_info extension missing (secure)" ) );
1505 handshake_failure = 1;
1512 handshake_failure = 1;
1516 renegotiation_info_seen == 1 )
1518 SSL_DEBUG_MSG( 1, (
"renegotiation_info extension present (legacy)" ) );
1519 handshake_failure = 1;
1522 if( handshake_failure == 1 )
1536 ciphersuite_info = NULL;
1537 #if defined(POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
1538 for( j = 0, p = buf + 41 + sess_len; j < ciph_len; j += 2, p += 2 )
1540 for( i = 0; ciphersuites[i] != 0; i++ )
1542 for( i = 0; ciphersuites[i] != 0; i++ )
1544 for( j = 0, p = buf + 41 + sess_len; j < ciph_len; j += 2, p += 2 )
1547 if( p[0] != ( ( ciphersuites[i] >> 8 ) & 0xFF ) ||
1548 p[1] != ( ( ciphersuites[i] ) & 0xFF ) )
1551 if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
1552 &ciphersuite_info ) ) != 0 )
1555 if( ciphersuite_info != NULL )
1556 goto have_ciphersuite;
1580 #if defined(POLARSSL_SSL_TRUNCATED_HMAC)
1581 static void ssl_write_truncated_hmac_ext(
ssl_context *ssl,
1585 unsigned char *p = buf;
1593 SSL_DEBUG_MSG( 3, (
"server hello, adding truncated hmac extension" ) );
1605 #if defined(POLARSSL_SSL_SESSION_TICKETS)
1606 static void ssl_write_session_ticket_ext(
ssl_context *ssl,
1610 unsigned char *p = buf;
1618 SSL_DEBUG_MSG( 3, (
"server hello, adding session ticket extension" ) );
1630 static void ssl_write_renegotiation_ext(
ssl_context *ssl,
1634 unsigned char *p = buf;
1642 SSL_DEBUG_MSG( 3, (
"server hello, secure renegotiation extension" ) );
1659 #if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
1660 static void ssl_write_max_fragment_length_ext(
ssl_context *ssl,
1664 unsigned char *p = buf;
1672 SSL_DEBUG_MSG( 3, (
"server hello, max_fragment_length extension" ) );
1686 #if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
1687 static void ssl_write_supported_point_formats_ext(
ssl_context *ssl,
1691 unsigned char *p = buf;
1701 SSL_DEBUG_MSG( 3, (
"server hello, supported_point_formats extension" ) );
1716 #if defined(POLARSSL_SSL_ALPN )
1718 unsigned char *buf,
size_t *olen )
1726 SSL_DEBUG_MSG( 3, (
"server hello, adding alpn extension" ) );
1735 buf[0] = (
unsigned char)( (
TLS_EXT_ALPN >> 8 ) & 0xFF );
1740 buf[2] = (
unsigned char)( ( ( *olen - 4 ) >> 8 ) & 0xFF );
1741 buf[3] = (
unsigned char)( ( ( *olen - 4 ) ) & 0xFF );
1743 buf[4] = (
unsigned char)( ( ( *olen - 6 ) >> 8 ) & 0xFF );
1744 buf[5] = (
unsigned char)( ( ( *olen - 6 ) ) & 0xFF );
1746 buf[6] = (
unsigned char)( ( ( *olen - 7 ) ) & 0xFF );
1752 static int ssl_write_server_hello(
ssl_context *ssl )
1754 #if defined(POLARSSL_HAVE_TIME)
1758 size_t olen, ext_len = 0, n;
1759 unsigned char *buf, *p;
1763 if( ssl->
f_rng == NULL )
1782 SSL_DEBUG_MSG( 3, (
"server hello, chosen version: [%d:%d]",
1785 #if defined(POLARSSL_HAVE_TIME)
1787 *p++ = (
unsigned char)( t >> 24 );
1788 *p++ = (
unsigned char)( t >> 16 );
1789 *p++ = (
unsigned char)( t >> 8 );
1790 *p++ = (
unsigned char)( t );
1792 SSL_DEBUG_MSG( 3, (
"server hello, current time: %lu", t ) );
1794 if( ( ret = ssl->
f_rng( ssl->
p_rng, p, 4 ) ) != 0 )
1800 if( ( ret = ssl->
f_rng( ssl->
p_rng, p, 28 ) ) != 0 )
1807 SSL_DEBUG_BUF( 3,
"server hello, random bytes", buf + 6, 32 );
1820 SSL_DEBUG_MSG( 3, (
"session successfully restored from cache" ) );
1832 #if defined(POLARSSL_HAVE_TIME)
1836 #if defined(POLARSSL_SSL_SESSION_TICKETS)
1878 SSL_DEBUG_MSG( 3, (
"server hello, session id len.: %d", n ) );
1879 SSL_DEBUG_BUF( 3,
"server hello, session id", buf + 39, n );
1895 ssl_write_renegotiation_ext( ssl, p + 2 + ext_len, &olen );
1898 #if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
1899 ssl_write_max_fragment_length_ext( ssl, p + 2 + ext_len, &olen );
1903 #if defined(POLARSSL_SSL_TRUNCATED_HMAC)
1904 ssl_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
1908 #if defined(POLARSSL_SSL_SESSION_TICKETS)
1909 ssl_write_session_ticket_ext( ssl, p + 2 + ext_len, &olen );
1913 #if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
1914 ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen );
1918 #if defined(POLARSSL_SSL_ALPN)
1919 ssl_write_alpn_ext( ssl, p + 2 + ext_len, &olen );
1923 SSL_DEBUG_MSG( 3, (
"server hello, total extension length: %d", ext_len ) );
1927 *p++ = (
unsigned char)( ( ext_len >> 8 ) & 0xFF );
1928 *p++ = (
unsigned char)( ( ext_len ) & 0xFF );
1943 #if !defined(POLARSSL_KEY_EXCHANGE_RSA_ENABLED) && \
1944 !defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) && \
1945 !defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED) && \
1946 !defined(POLARSSL_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
1947 static int ssl_write_certificate_request(
ssl_context *ssl )
1958 SSL_DEBUG_MSG( 2, (
"<= skip write certificate request" ) );
1967 static int ssl_write_certificate_request(
ssl_context *ssl )
1971 size_t dn_size, total_dn_size;
1972 size_t ct_len, sa_len;
1973 unsigned char *buf, *p;
1986 SSL_DEBUG_MSG( 2, (
"<= skip write certificate request" ) );
2013 #if defined(POLARSSL_RSA_C)
2016 #if defined(POLARSSL_ECDSA_C)
2020 p[0] = (
unsigned char) ct_len++;
2024 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
2055 #if defined(POLARSSL_RSA_C)
2059 #if defined(POLARSSL_ECDSA_C)
2064 p[0] = (
unsigned char)( sa_len >> 8 );
2065 p[1] = (
unsigned char)( sa_len );
2079 while( crt != NULL && crt->
version != 0 )
2081 if( p - buf > 4096 )
2085 *p++ = (
unsigned char)( dn_size >> 8 );
2086 *p++ = (
unsigned char)( dn_size );
2092 total_dn_size += 2 + dn_size;
2099 ssl->
out_msg[4 + ct_len + sa_len] = (
unsigned char)( total_dn_size >> 8 );
2100 ssl->
out_msg[5 + ct_len + sa_len] = (
unsigned char)( total_dn_size );
2113 #if defined(POLARSSL_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \
2114 defined(POLARSSL_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
2115 static int ssl_get_ecdh_params_from_cert(
ssl_context *ssl )
2138 static int ssl_write_server_key_exchange(
ssl_context *ssl )
2145 #if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) || \
2146 defined(POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED) || \
2147 defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
2148 defined(POLARSSL_KEY_EXCHANGE_ECDHE_PSK_ENABLED) || \
2149 defined(POLARSSL_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
2150 unsigned char *p = ssl->
out_msg + 4;
2151 unsigned char *dig_signed = p;
2152 size_t dig_signed_len = 0, len;
2153 ((void) dig_signed);
2154 ((void) dig_signed_len);
2159 #if defined(POLARSSL_KEY_EXCHANGE_RSA_ENABLED) || \
2160 defined(POLARSSL_KEY_EXCHANGE_PSK_ENABLED) || \
2161 defined(POLARSSL_KEY_EXCHANGE_RSA_PSK_ENABLED)
2166 SSL_DEBUG_MSG( 2, (
"<= skip write server key exchange" ) );
2172 #if defined(POLARSSL_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \
2173 defined(POLARSSL_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
2177 ssl_get_ecdh_params_from_cert( ssl );
2179 SSL_DEBUG_MSG( 2, (
"<= skip write server key exchange" ) );
2185 #if defined(POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED) || \
2186 defined(POLARSSL_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
2199 #if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) || \
2200 defined(POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED)
2229 dig_signed_len = len;
2242 #if defined(POLARSSL_KEY_EXCHANGE__SOME__ECDHE_ENABLED)
2256 #if defined(POLARSSL_SSL_SET_CURVES)
2262 if( (*curve)->grp_id == *gid )
2263 goto curve_matching_done;
2265 curve_matching_done:
2270 if( *curve == NULL )
2279 (*curve)->grp_id ) ) != 0 )
2286 p, SSL_MAX_CONTENT_LEN - n,
2294 dig_signed_len = len;
2303 #if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) || \
2304 defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
2305 defined(POLARSSL_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
2310 size_t signature_len = 0;
2311 unsigned int hashlen = 0;
2312 unsigned char hash[64];
2318 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
2331 #if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
2332 defined(POLARSSL_SSL_PROTO_TLS1_1)
2347 #if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
2348 defined(POLARSSL_SSL_PROTO_TLS1_1)
2372 md5_update( &md5, dig_signed, dig_signed_len );
2388 #if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
2389 defined(POLARSSL_SSL_PROTO_TLS1_2)
2415 md_update( &ctx, dig_signed, dig_signed_len );
2427 SSL_DEBUG_BUF( 3,
"parameters hash", hash, hashlen != 0 ? hashlen :
2439 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
2450 p + 2 , &signature_len,
2457 *(p++) = (
unsigned char)( signature_len >> 8 );
2458 *(p++) = (
unsigned char)( signature_len );
2487 static int ssl_write_server_hello_done(
ssl_context *ssl )
2510 #if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) || \
2511 defined(POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED)
2512 static int ssl_parse_client_dh_public(
ssl_context *ssl,
unsigned char **p,
2513 const unsigned char *end )
2527 n = ( (*p)[0] << 8 ) | (*p)[1];
2551 #if defined(POLARSSL_KEY_EXCHANGE_RSA_ENABLED) || \
2552 defined(POLARSSL_KEY_EXCHANGE_RSA_PSK_ENABLED)
2553 static int ssl_parse_encrypted_pms(
ssl_context *ssl,
2554 const unsigned char *p,
2555 const unsigned char *end,
2571 #if defined(POLARSSL_SSL_PROTO_TLS1) || defined(POLARSSL_SSL_PROTO_TLS1_1) || \
2572 defined(POLARSSL_SSL_PROTO_TLS1_2)
2575 if( *p++ != ( ( len >> 8 ) & 0xFF ) ||
2576 *p++ != ( ( len ) & 0xFF ) )
2584 if( p + len != end )
2619 #if defined(POLARSSL_KEY_EXCHANGE__SOME__PSK_ENABLED)
2620 static int ssl_parse_client_psk_identity(
ssl_context *ssl,
unsigned char **p,
2621 const unsigned char *end )
2626 if( ssl->
f_psk == NULL &&
2643 n = ( (*p)[0] << 8 ) | (*p)[1];
2646 if( n < 1 || n > 65535 || *p + n > end )
2652 if( ssl->
f_psk != NULL )
2654 if( ssl->
f_psk( ssl->
p_psk, ssl, *p, n ) != 0 )
2687 static int ssl_parse_client_key_exchange(
ssl_context *ssl )
2714 #if defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED)
2717 unsigned char *p = ssl->
in_msg + 4;
2720 if( ( ret = ssl_parse_client_dh_public( ssl, &p, end ) ) != 0 )
2747 #if defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
2748 defined(POLARSSL_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \
2749 defined(POLARSSL_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \
2750 defined(POLARSSL_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
2782 #if defined(POLARSSL_KEY_EXCHANGE_PSK_ENABLED)
2785 unsigned char *p = ssl->
in_msg + 4;
2788 if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
2790 SSL_DEBUG_RET( 1, (
"ssl_parse_client_psk_identity" ), ret );
2809 #if defined(POLARSSL_KEY_EXCHANGE_RSA_PSK_ENABLED)
2812 unsigned char *p = ssl->
in_msg + 4;
2815 if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
2817 SSL_DEBUG_RET( 1, (
"ssl_parse_client_psk_identity" ), ret );
2821 if( ( ret = ssl_parse_encrypted_pms( ssl, p, end, 2 ) ) != 0 )
2836 #if defined(POLARSSL_KEY_EXCHANGE_DHE_PSK_ENABLED)
2839 unsigned char *p = ssl->
in_msg + 4;
2842 if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
2844 SSL_DEBUG_RET( 1, (
"ssl_parse_client_psk_identity" ), ret );
2847 if( ( ret = ssl_parse_client_dh_public( ssl, &p, end ) ) != 0 )
2868 #if defined(POLARSSL_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
2871 unsigned char *p = ssl->
in_msg + 4;
2874 if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
2876 SSL_DEBUG_RET( 1, (
"ssl_parse_client_psk_identity" ), ret );
2881 p, end - p ) ) != 0 )
2898 #if defined(POLARSSL_KEY_EXCHANGE_RSA_ENABLED)
2901 if( ( ret = ssl_parse_encrypted_pms( ssl,
2906 SSL_DEBUG_RET( 1, (
"ssl_parse_parse_encrypted_pms_secret" ), ret );
2930 #if !defined(POLARSSL_KEY_EXCHANGE_RSA_ENABLED) && \
2931 !defined(POLARSSL_KEY_EXCHANGE_DHE_RSA_ENABLED) && \
2932 !defined(POLARSSL_KEY_EXCHANGE_ECDHE_RSA_ENABLED) && \
2933 !defined(POLARSSL_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
2934 static int ssl_parse_certificate_verify(
ssl_context *ssl )
2954 static int ssl_parse_certificate_verify(
ssl_context *ssl )
2957 size_t sa_len, sig_len;
2958 unsigned char hash[48];
2959 unsigned char *hash_start = hash;
2961 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
3016 #if defined(POLARSSL_SSL_PROTO_SSL3) || defined(POLARSSL_SSL_PROTO_TLS1) || \
3017 defined(POLARSSL_SSL_PROTO_TLS1_1)
3037 #if defined(POLARSSL_SSL_PROTO_TLS1_2)
3047 SSL_DEBUG_MSG( 1, (
"peer not adhering to requested sig_alg"
3048 " for verify message" ) );
3063 SSL_DEBUG_MSG( 1, (
"peer not adhering to requested sig_alg"
3064 " for verify message" ) );
3084 sig_len = ( ssl->
in_msg[4 + sa_len] << 8 ) | ssl->
in_msg[5 + sa_len];
3086 if( sa_len + sig_len + 6 != ssl->
in_hslen )
3093 md_alg, hash_start, hashlen,
3094 ssl->
in_msg + 6 + sa_len, sig_len ) ) != 0 )
3108 #if defined(POLARSSL_SSL_SESSION_TICKETS)
3109 static int ssl_write_new_session_ticket(
ssl_context *ssl )
3131 ssl->
out_msg[4] = ( lifetime >> 24 ) & 0xFF;
3132 ssl->
out_msg[5] = ( lifetime >> 16 ) & 0xFF;
3133 ssl->
out_msg[6] = ( lifetime >> 8 ) & 0xFF;
3134 ssl->
out_msg[7] = ( lifetime ) & 0xFF;
3136 if( ( ret = ssl_write_ticket( ssl, &tlen ) ) != 0 )
3142 ssl->
out_msg[8] = (
unsigned char)( ( tlen >> 8 ) & 0xFF );
3143 ssl->
out_msg[9] = (
unsigned char)( ( tlen ) & 0xFF );
3180 switch( ssl->
state )
3190 ret = ssl_parse_client_hello( ssl );
3201 ret = ssl_write_server_hello( ssl );
3209 ret = ssl_write_server_key_exchange( ssl );
3213 ret = ssl_write_certificate_request( ssl );
3217 ret = ssl_write_server_hello_done( ssl );
3232 ret = ssl_parse_client_key_exchange( ssl );
3236 ret = ssl_parse_certificate_verify( ssl );
3253 #if defined(POLARSSL_SSL_SESSION_TICKETS)
3255 ret = ssl_write_new_session_ticket( ssl );
const ecp_curve_info ** curves
#define SSL_HS_CLIENT_KEY_EXCHANGE
#define SSL_CERT_TYPE_ECDSA_SIGN
int ssl_ciphersuite_uses_ec(const ssl_ciphersuite_t *info)
int ecdh_make_params(ecdh_context *ctx, size_t *olen, unsigned char *buf, size_t blen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Generate a public key and a TLS ServerKeyExchange payload.
#define SSL_ALERT_LEVEL_FATAL
static size_t pk_get_len(const pk_context *ctx)
Get the length in bytes of the underlying key.
int ssl_send_alert_message(ssl_context *ssl, unsigned char level, unsigned char message)
Send an alert message.
#define TLS_EXT_SERVERNAME_HOSTNAME
#define POLARSSL_PREMASTER_SIZE
#define POLARSSL_ERR_SSL_PK_TYPE_MISMATCH
Public key type mismatch (eg, asked for RSA key exchange and presented EC key)
#define POLARSSL_ECP_PF_COMPRESSED
Compressed point format.
pk_type_t ssl_pk_alg_from_sig(unsigned char sig)
int ecdh_calc_secret(ecdh_context *ctx, size_t *olen, unsigned char *buf, size_t blen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Derive and export the shared secret.
char peer_verify_data[36]
#define SSL_HS_CLIENT_HELLO
#define pk_ec(pk)
Quick access to an EC context inside a PK context.
x509_buf raw
The raw certificate data (DER).
void sha1(const unsigned char *input, size_t ilen, unsigned char output[20])
Output = SHA-1( input buffer )
void sha1_finish(sha1_context *ctx, unsigned char output[20])
SHA-1 final digest.
int md_starts(md_context_t *ctx)
Set-up the given context for a new message digest.
#define SSL_HS_SERVER_KEY_EXCHANGE
void md_init(md_context_t *ctx)
Initialize a md_context (as NONE)
#define TLS_EXT_TRUNCATED_HMAC
Elliptic curves over GF(p)
int ecdh_read_public(ecdh_context *ctx, const unsigned char *buf, size_t blen)
Parse and process a TLS ClientKeyExchange payload.
#define SSL_HS_NEW_SESSION_TICKET
ssl_session * session_negotiate
int ssl_parse_certificate(ssl_context *ssl)
ssl_key_cert * sni_key_cert
#define SSL_SESSION_TICKETS_DISABLED
const int * ciphersuite_list[4]
int ssl_parse_finished(ssl_context *ssl)
void sha256_hmac(const unsigned char *key, size_t keylen, const unsigned char *input, size_t ilen, unsigned char output[32], int is224)
Output = HMAC-SHA-256( hmac key, input buffer )
int md_init_ctx(md_context_t *ctx, const md_info_t *md_info)
Initialises and fills the message digest context structure with the appropriate values.
int pk_decrypt(pk_context *ctx, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen, size_t osize, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Decrypt message (including padding if relevant).
#define SSL_ALERT_MSG_UNKNOWN_PSK_IDENTITY
#define SSL_RENEGOTIATION
unsigned char premaster[POLARSSL_PREMASTER_SIZE]
void ssl_session_free(ssl_session *session)
Free referenced items in an SSL session including the peer certificate and clear memory.
#define POLARSSL_ECP_PF_UNCOMPRESSED
Uncompressed point format.
int ssl_write_finished(ssl_context *ssl)
void x509_crt_free(x509_crt *crt)
Unallocate all certificate data.
Configuration options (set of defines)
int(* f_rng)(void *, unsigned char *, size_t)
#define SSL_TRUNC_HMAC_ENABLED
void ssl_handshake_wrapup(ssl_context *ssl)
int ecdh_get_params(ecdh_context *ctx, const ecp_keypair *key, ecdh_side side)
Setup an ECDH context from an EC key.
int x509_crt_parse_der(x509_crt *chain, const unsigned char *buf, size_t buflen)
Parse a single DER formatted certificate and add it to the chained list.
void md5_finish(md5_context *ctx, unsigned char output[16])
MD5 final digest.
int(* f_sni)(void *, ssl_context *, const unsigned char *, size_t)
int ssl_handshake_server_step(ssl_context *ssl)
#define SSL_LEGACY_NO_RENEGOTIATION
unsigned char mac_key[16]
#define SSL_MAJOR_VERSION_3
#define POLARSSL_ERR_SSL_INVALID_MAC
Verification of the message MAC failed.
pk_type_t ssl_get_ciphersuite_sig_pk_alg(const ssl_ciphersuite_t *info)
int(* f_psk)(void *, ssl_context *, const unsigned char *, size_t)
struct _x509_crt * next
Next certificate in the CA-chain.
#define POLARSSL_ECP_DP_MAX
Number of supported curves (plus one for NONE).
void md5_free(md5_context *ctx)
Clear MD5 context.
#define TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT
#define POLARSSL_MPI_MAX_SIZE
#define SSL_DEBUG_MPI(level, text, X)
const md_info_t * md_info_from_type(md_type_t md_type)
Returns the message digest information associated with the given digest type.
#define SSL_HS_CERTIFICATE_REQUEST
#define SSL_CERT_TYPE_RSA_SIGN
ssl_handshake_params * handshake
#define POLARSSL_ERR_SSL_CERTIFICATE_TOO_LARGE
Our own certificate(s) is/are too large to send in an SSL message.
#define SSL_MSG_HANDSHAKE
int ssl_write_certificate(ssl_context *ssl)
#define SSL_ALERT_MSG_PROTOCOL_VERSION
#define POLARSSL_ERR_SSL_NO_RNG
No RNG was provided to the SSL module.
#define SSL_TRUNC_HMAC_DISABLED
Container for an X.509 certificate.
void md_free(md_context_t *ctx)
Free and clear the message-specific context of ctx.
#define SSL_ALERT_MSG_UNRECOGNIZED_NAME
#define POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS
Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Calculate Secret...
int aes_crypt_cbc(aes_context *ctx, int mode, size_t length, unsigned char iv[16], const unsigned char *input, unsigned char *output)
AES-CBC buffer encryption/decryption Length should be a multiple of the block size (16 bytes) ...
struct _ssl_session ssl_session
#define SSL_MINOR_VERSION_0
void(* update_checksum)(ssl_context *, const unsigned char *, size_t)
int pk_verify(pk_context *ctx, md_type_t md_alg, const unsigned char *hash, size_t hash_len, const unsigned char *sig, size_t sig_len)
Verify signature (including padding if relevant).
#define POLARSSL_ERR_SSL_BAD_HS_PROTOCOL_VERSION
Handshake protocol not within min/max boundaries.
ssl_key_cert * key_cert
Current key/cert or key/cert list.
#define SSL_HS_SERVER_HELLO_DONE
void x509_crt_init(x509_crt *crt)
Initialize a certificate (chain)
#define SSL_DEBUG_ECP(level, text, X)
unsigned char * p
ASN1 data, e.g.
key_exchange_type_t key_exchange
#define SSL_DEBUG_BUF(level, text, buf, len)
void sha1_free(sha1_context *ctx)
Clear SHA-1 context.
Curve information for use by other modules.
int pk_can_do(pk_context *ctx, pk_type_t type)
Tell if a context can do the operation given by type.
void md5_starts(md5_context *ctx)
MD5 context setup.
unsigned char ssl_sig_from_pk(pk_context *pk)
#define SSL_ALERT_MSG_NO_APPLICATION_PROTOCOL
int ssl_flush_output(ssl_context *ssl)
int ssl_ciphersuite_uses_psk(const ssl_ciphersuite_t *info)
#define POLARSSL_ERR_SSL_SESSION_TICKET_EXPIRED
Session ticket has expired.
#define TLS_EXT_SESSION_TICKET
#define SSL_HS_SERVER_HELLO
#define SSL_COMPRESS_DEFLATE
#define SSL_MINOR_VERSION_3
#define TLS_EXT_RENEGOTIATION_INFO
int ssl_check_cert_usage(const x509_crt *cert, const ssl_ciphersuite_t *ciphersuite, int cert_endpoint)
pk_type_t
Public key types.
#define SSL_DEBUG_RET(level, text, ret)
const int * md_list(void)
Returns the list of digests supported by the generic digest module.
int ssl_parse_change_cipher_spec(ssl_context *ssl)
void sha1_starts(sha1_context *ctx)
SHA-1 context setup.
#define POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO
Processing of the ClientHello handshake message failed.
#define SSL_EMPTY_RENEGOTIATION_INFO
renegotiation info ext
This structure is used for storing ciphersuite information.
void md5_init(md5_context *ctx)
Initialize MD5 context.
int ecp_use_known_dp(ecp_group *grp, ecp_group_id index)
Set a group using well-known domain parameters.
#define POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE
Processing of the ClientKeyExchange handshake message failed.
#define POLARSSL_ERR_SSL_PRIVATE_KEY_REQUIRED
The own private key or pre-shared key is not set, but needed.
#define SSL_INITIAL_HANDSHAKE
int allow_legacy_renegotiation
#define SSL_COMPRESS_NULL
#define POLARSSL_ERR_SSL_INTERNAL_ERROR
Internal error (eg, unexpected failure in lower-level module)
const ssl_ciphersuite_t * ssl_ciphersuite_from_id(int ciphersuite_id)
int ssl_read_record(ssl_context *ssl)
size_t len
ASN1 length, e.g.
ecp_group_id
Domain parameters (curve, subgroup and generator) identifiers.
#define SSL_DEBUG_MSG(level, args)
#define SSL_MAX_FRAG_LEN_INVALID
#define TLS_EXT_MAX_FRAGMENT_LENGTH
#define SSL_MAX_FRAG_LEN_NONE
#define SSL_HS_CERTIFICATE_VERIFY
#define TLS_EXT_SERVERNAME
int pk_sign(pk_context *ctx, md_type_t md_alg, const unsigned char *hash, size_t hash_len, unsigned char *sig, size_t *sig_len, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Make signature, including padding if relevant.
#define POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP
Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Read Public.
size_t mpi_size(const mpi *X)
Return the total size in bytes.
void(* calc_verify)(ssl_context *, unsigned char *)
int mpi_copy(mpi *X, const mpi *Y)
Copy the contents of Y into X.
#define SSL_MAX_CONTENT_LEN
#define SSL_LEGACY_BREAK_HANDSHAKE
pk_context pk
Container for the public key context.
ssl_transform * transform_negotiate
#define SSL_LEGACY_RENEGOTIATION
#define SSL_SECURE_RENEGOTIATION
void sha1_init(sha1_context *ctx)
Initialize SHA-1 context.
#define POLARSSL_ERR_SSL_UNKNOWN_IDENTITY
Unknown identity received (eg, PSK identity)
#define POLARSSL_ERR_SSL_MALLOC_FAILED
Memory allocation failed.
void sha1_update(sha1_context *ctx, const unsigned char *input, size_t ilen)
SHA-1 process buffer.
#define TLS_EXT_SUPPORTED_POINT_FORMATS
void md5_update(md5_context *ctx, const unsigned char *input, size_t ilen)
MD5 process buffer.
int ssl_write_change_cipher_spec(ssl_context *ssl)
int ssl_derive_keys(ssl_context *ssl)
static pk_context * ssl_own_key(ssl_context *ssl)
int md_finish(md_context_t *ctx, unsigned char *output)
Generic message digest final digest.
const ecp_curve_info * ecp_curve_info_from_tls_id(uint16_t tls_id)
Get curve information from a TLS NamedCurve value.
int ssl_psk_derive_premaster(ssl_context *ssl, key_exchange_type_t key_ex)
int version
The X.509 version.
static int safer_memcmp(const void *a, const void *b, size_t n)
int ssl_send_fatal_handshake_failure(ssl_context *ssl)
ssl_ticket_keys * ticket_keys
unsigned char * psk_identity
const char * ssl_get_ciphersuite_name(const int ciphersuite_id)
Return the name of the ciphersuite associated with the given ID.
unsigned char key_name[16]
#define TLS_EXT_SUPPORTED_ELLIPTIC_CURVES
void md5(const unsigned char *input, size_t ilen, unsigned char output[16])
Output = MD5( input buffer )
#define POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE
The requested feature is not available.
x509_buf subject_raw
The raw subject data (DER).
Message digest information.
int(* f_get_cache)(void *, ssl_session *)
int md_update(md_context_t *ctx, const unsigned char *input, size_t ilen)
Generic message digest process buffer.
#define POLARSSL_ERR_SSL_BAD_INPUT_DATA
Bad input parameters to function.
int ssl_fetch_input(ssl_context *ssl, size_t nb_want)
int dhm_make_params(dhm_context *ctx, int x_size, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Setup and write the ServerKeyExchange parameters.
int ssl_write_record(ssl_context *ssl)
#define POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY
Processing of the CertificateVerify handshake message failed.
int dhm_read_public(dhm_context *ctx, const unsigned char *input, size_t ilen)
Import the peer's public value G^Y.
unsigned char randbytes[64]
Generic message digest context.
#define POLARSSL_ERR_SSL_NO_CIPHER_CHOSEN
The server has no ciphersuites in common with the client.
void ssl_optimize_checksum(ssl_context *ssl, const ssl_ciphersuite_t *ciphersuite_info)
md_type_t ssl_md_alg_from_hash(unsigned char hash)
int dhm_calc_secret(dhm_context *ctx, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Derive and export the shared secret (G^Y)^X mod P.