Don't build RC4 ciphersuites into libssl by default
[openssl.git] / ssl / s3_lib.c
index 4b2f196782d5e64749d140e23908617e7978c3b9..f1ea55aea948e3074f9dbad332a9847de73c4a9e 100644 (file)
@@ -1,4 +1,3 @@
-/* ssl/s3_lib.c */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
 #define SSL3_NUM_CIPHERS        OSSL_NELEM(ssl3_ciphers)
 
 /* list of available SSLv3 ciphers (sorted by id) */
-OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
+static const SSL_CIPHER ssl3_ciphers[] = {
 
 /* The RSA ciphers */
 /* Cipher 01 */
@@ -196,6 +195,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
 /* Cipher 04 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      SSL3_TXT_RSA_RC4_128_MD5,
@@ -226,6 +226,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
 /* Cipher 07 */
 #ifndef OPENSSL_NO_IDEA
@@ -294,6 +295,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
 /* Cipher 18 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      SSL3_TXT_ADH_RC4_128_MD5,
@@ -308,6 +310,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
 /* Cipher 1B */
     {
@@ -814,6 +817,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
 #ifndef OPENSSL_NO_PSK
     /* PSK ciphersuites from RFC 4279 */
     /* Cipher 8A */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_PSK_WITH_RC4_128_SHA,
@@ -828,6 +832,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher 8B */
     {
@@ -878,6 +883,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
     /* Cipher 8E */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_DHE_PSK_WITH_RC4_128_SHA,
@@ -892,6 +898,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher 8F */
     {
@@ -942,6 +949,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
     /* Cipher 92 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_RSA_PSK_WITH_RC4_128_SHA,
@@ -956,6 +964,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher 93 */
     {
@@ -1628,103 +1637,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 #endif
 
-#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
-    /* Cipher FF */
-    {
-     1,
-     "SCSV",
-     SSL3_CK_SCSV,
-     0,
-     0,
-     0,
-     0,
-     0,
-     0,
-     0,
-     0,
-     0},
-#endif
-
 #ifndef OPENSSL_NO_EC
-    /* Cipher C001 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_NULL_SHA,
-     TLS1_CK_ECDH_ECDSA_WITH_NULL_SHA,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_eNULL,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_NOT_DEFAULT | SSL_STRONG_NONE | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     0,
-     0,
-     },
-
-    /* Cipher C002 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_RC4_128_SHA,
-     TLS1_CK_ECDH_ECDSA_WITH_RC4_128_SHA,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_RC4,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_NOT_DEFAULT | SSL_MEDIUM,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     128,
-     128,
-     },
-
-    /* Cipher C003 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_DES_192_CBC3_SHA,
-     TLS1_CK_ECDH_ECDSA_WITH_DES_192_CBC3_SHA,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_3DES,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     112,
-     168,
-     },
-
-    /* Cipher C004 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES128,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     128,
-     128,
-     },
-
-    /* Cipher C005 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES256,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     256,
-     256,
-     },
 
     /* Cipher C006 */
     {
@@ -1743,6 +1656,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
     /* Cipher C007 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_ECDHE_ECDSA_WITH_RC4_128_SHA,
@@ -1757,6 +1671,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher C008 */
     {
@@ -1806,86 +1721,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      },
 
-    /* Cipher C00B */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_NULL_SHA,
-     TLS1_CK_ECDH_RSA_WITH_NULL_SHA,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_eNULL,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_NOT_DEFAULT | SSL_STRONG_NONE | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     0,
-     0,
-     },
-
-    /* Cipher C00C */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_RC4_128_SHA,
-     TLS1_CK_ECDH_RSA_WITH_RC4_128_SHA,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_RC4,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_NOT_DEFAULT | SSL_MEDIUM,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     128,
-     128,
-     },
-
-    /* Cipher C00D */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_DES_192_CBC3_SHA,
-     TLS1_CK_ECDH_RSA_WITH_DES_192_CBC3_SHA,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_3DES,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     112,
-     168,
-     },
-
-    /* Cipher C00E */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_128_CBC_SHA,
-     TLS1_CK_ECDH_RSA_WITH_AES_128_CBC_SHA,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES128,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     128,
-     128,
-     },
-
-    /* Cipher C00F */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_256_CBC_SHA,
-     TLS1_CK_ECDH_RSA_WITH_AES_256_CBC_SHA,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES256,
-     SSL_SHA1,
-     SSL_SSLV3,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
-     256,
-     256,
-     },
-
     /* Cipher C010 */
     {
      1,
@@ -1903,6 +1738,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
     /* Cipher C011 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_ECDHE_RSA_WITH_RC4_128_SHA,
@@ -1917,6 +1753,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher C012 */
     {
@@ -1983,6 +1820,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      },
 
     /* Cipher C016 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_ECDH_anon_WITH_RC4_128_SHA,
@@ -1997,6 +1835,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher C017 */
     {
@@ -2228,37 +2067,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      },
 
-    /* Cipher C025 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_128_SHA256,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_128_SHA256,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES128,
-     SSL_SHA256,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128,
-     },
-
-    /* Cipher C026 */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_256_SHA384,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_256_SHA384,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES256,
-     SSL_SHA384,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256,
-     },
 
     /* Cipher C027 */
     {
@@ -2292,38 +2100,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      },
 
-    /* Cipher C029 */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_128_SHA256,
-     TLS1_CK_ECDH_RSA_WITH_AES_128_SHA256,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES128,
-     SSL_SHA256,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128,
-     },
-
-    /* Cipher C02A */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_256_SHA384,
-     TLS1_CK_ECDH_RSA_WITH_AES_256_SHA384,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES256,
-     SSL_SHA384,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256,
-     },
-
     /* GCM based TLS v1.2 ciphersuites from RFC5289 */
 
     /* Cipher C02B */
@@ -2358,38 +2134,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      },
 
-    /* Cipher C02D */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES128GCM,
-     SSL_AEAD,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128,
-     },
-
-    /* Cipher C02E */
-    {
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
-     TLS1_CK_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_AES256GCM,
-     SSL_AEAD,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256,
-     },
-
     /* Cipher C02F */
     {
      1,
@@ -2422,40 +2166,9 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      },
 
-    /* Cipher C031 */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_128_GCM_SHA256,
-     TLS1_CK_ECDH_RSA_WITH_AES_128_GCM_SHA256,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES128GCM,
-     SSL_AEAD,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128,
-     },
-
-    /* Cipher C032 */
-    {
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_AES_256_GCM_SHA384,
-     TLS1_CK_ECDH_RSA_WITH_AES_256_GCM_SHA384,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_AES256GCM,
-     SSL_AEAD,
-     SSL_TLSV1_2,
-     SSL_HIGH | SSL_FIPS,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256,
-     },
-
     /* PSK ciphersuites from RFC 5489 */
     /* Cipher C033 */
+#ifndef OPENSSL_NO_WEAK_SSL_CIPHERS
     {
      1,
      TLS1_TXT_ECDHE_PSK_WITH_RC4_128_SHA,
@@ -2470,6 +2183,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      128,
      128,
      },
+#endif
 
     /* Cipher C034 */
     {
@@ -2628,34 +2342,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      256},
 
-    {                           /* Cipher C074 */
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
-     TLS1_CK_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_CAMELLIA128,
-     SSL_SHA256,
-     SSL_TLSV1_2,
-     SSL_HIGH,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128},
-
-    {                           /* Cipher C075 */
-     1,
-     TLS1_TXT_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
-     TLS1_CK_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
-     SSL_kECDHe,
-     SSL_aECDH,
-     SSL_CAMELLIA256,
-     SSL_SHA384,
-     SSL_TLSV1_2,
-     SSL_HIGH,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256},
-
     {                           /* Cipher C076 */
      1,
      TLS1_TXT_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
@@ -2684,33 +2370,6 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
      256,
      256},
 
-    {                           /* Cipher C078 */
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256,
-     TLS1_CK_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_CAMELLIA128,
-     SSL_SHA256,
-     SSL_TLSV1_2,
-     SSL_HIGH,
-     SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256,
-     128,
-     128},
-
-    {                           /* Cipher C079 */
-     1,
-     TLS1_TXT_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384,
-     TLS1_CK_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384,
-     SSL_kECDHr,
-     SSL_aECDH,
-     SSL_CAMELLIA256,
-     SSL_SHA384,
-     SSL_TLSV1_2,
-     SSL_HIGH,
-     SSL_HANDSHAKE_MAC_SHA384 | TLS1_PRF_SHA384,
-     256,
-     256},
 # endif                         /* OPENSSL_NO_CAMELLIA */
 #endif                          /* OPENSSL_NO_EC */
 
@@ -3456,9 +3115,6 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg)
     int ret = 0;
 
     switch (cmd) {
-    case SSL_CTRL_GET_SESSION_REUSED:
-        ret = s->hit;
-        break;
     case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
         break;
     case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
@@ -3598,23 +3254,24 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg)
         break;
 
 #ifndef OPENSSL_NO_HEARTBEATS
-    case SSL_CTRL_TLS_EXT_SEND_HEARTBEAT:
+    case SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT:
         if (SSL_IS_DTLS(s))
             ret = dtls1_heartbeat(s);
-        else
-            ret = tls1_heartbeat(s);
         break;
 
-    case SSL_CTRL_GET_TLS_EXT_HEARTBEAT_PENDING:
-        ret = s->tlsext_hb_pending;
+    case SSL_CTRL_GET_DTLS_EXT_HEARTBEAT_PENDING:
+        if (SSL_IS_DTLS(s))
+            ret = s->tlsext_hb_pending;
         break;
 
-    case SSL_CTRL_SET_TLS_EXT_HEARTBEAT_NO_REQUESTS:
-        if (larg)
-            s->tlsext_heartbeat |= SSL_TLSEXT_HB_DONT_RECV_REQUESTS;
-        else
-            s->tlsext_heartbeat &= ~SSL_TLSEXT_HB_DONT_RECV_REQUESTS;
-        ret = 1;
+    case SSL_CTRL_SET_DTLS_EXT_HEARTBEAT_NO_REQUESTS:
+        if (SSL_IS_DTLS(s)) {
+            if (larg)
+                s->tlsext_heartbeat |= SSL_DTLSEXT_HB_DONT_RECV_REQUESTS;
+            else
+                s->tlsext_heartbeat &= ~SSL_DTLSEXT_HB_DONT_RECV_REQUESTS;
+            ret = 1;
+        }
         break;
 #endif
 
@@ -3800,7 +3457,7 @@ long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
 #endif
     case SSL_CTRL_SET_TLSEXT_DEBUG_CB:
         s->tlsext_debug_cb = (void (*)(SSL *, int, int,
-                                       unsigned char *, int, void *))fp;
+                                       const unsigned char *, int, void *))fp;
         break;
 
     case SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB:
@@ -4087,10 +3744,6 @@ const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p)
     id = 0x03000000 | ((uint32_t)p[0] << 8L) | (uint32_t)p[1];
     c.id = id;
     cp = OBJ_bsearch_ssl_cipher_id(&c, ssl3_ciphers, SSL3_NUM_CIPHERS);
-#ifdef DEBUG_PRINT_UNKNOWN_CIPHERSUITES
-    if (cp == NULL)
-        fprintf(stderr, "Unknown cipher ID %x\n", (p[0] << 8) | p[1]);
-#endif
     return cp;
 }
 
@@ -4153,6 +3806,7 @@ const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
     }
 
     tls1_set_cert_validity(s);
+    ssl_set_masks(s);
 
     for (i = 0; i < sk_SSL_CIPHER_num(prio); i++) {
         c = sk_SSL_CIPHER_value(prio, i);
@@ -4164,7 +3818,6 @@ const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
         if ((c->algorithm_ssl & SSL_TLSV1) && s->version == SSL3_VERSION)
             continue;
 
-        ssl_set_masks(s, c);
         mask_k = s->s3->tmp.mask_k;
         mask_a = s->s3->tmp.mask_a;
 #ifndef OPENSSL_NO_SRP