OSX/libsecurity_ssl/regressions/ssl-39-echo.c

   1
   2 #if TARGET_OS_IPHONE
   3 // Currently only supported for iOS
   4
   5 #include <stdbool.h>
   6 #include <pthread.h>
   7 #include <fcntl.h>
   8 #include <sys/mman.h>
   9 #include <unistd.h>
  10
  11 #include <CoreFoundation/CoreFoundation.h>
  12
  13 #include <AssertMacros.h>
  14 #include <Security/SecureTransportPriv.h> /* SSLSetOption */
  15 #include <Security/SecureTransport.h>
  16 #include <Security/SecPolicy.h>
  17 #include <Security/SecTrust.h>
  18 #include <Security/SecIdentity.h>
  19 #include <Security/SecIdentityPriv.h>
  20 #include <Security/SecCertificatePriv.h>
  21 #include <Security/SecKeyPriv.h>
  22 #include <Security/SecItem.h>
  23 #include <Security/SecRandom.h>
  24
  25 #include <string.h>
  26 #include <sys/types.h>
  27 #include <sys/socket.h>
  28 #include <errno.h>
  29 #include <stdlib.h>
  30 #include <mach/mach_time.h>
  31
  32 #include <Security/SecRSAKey.h>
  33
  34 #include "testlist.h"
  35
  36 /*
  37     SSL CipherSuite tests
  38
  39     Below are all the ciphers that are individually tested.  The first element
  40     is the SecureTransport/RFC name; the second is what openssl calls it, which
  41     can be looked up in ciphers(1).
  42
  43     All SSL_DH_* and TLS_DH_* are disabled because neither openssl nor
  44     securetransport support them:
  45     SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA, SSL_DH_DSS_WITH_DES_CBC_SHA,
  46     SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA, SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA,
  47     SSL_DH_RSA_WITH_DES_CBC_SHA, SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA,
  48     TLS_DH_DSS_WITH_AES_128_CBC_SHA, TLS_DH_RSA_WITH_AES_128_CBC_SHA,
  49     TLS_DH_DSS_WITH_AES_256_CBC_SHA, TLS_DH_RSA_WITH_AES_256_CBC_SHA,
  50
  51     DSS is unimplemented by securetransport on the phone:
  52     SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_DSS_WITH_DES_CBC_SHA,
  53     SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
  54     TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
  55
  56     SSLv2 ciphersuites disabled by securetransport on phone:
  57     SSL_RSA_WITH_RC2_CBC_MD5, SSL_RSA_WITH_IDEA_CBC_MD5,
  58     SSL_RSA_WITH_DES_CBC_MD5, SSL_RSA_WITH_3DES_EDE_CBC_MD5,
  59
  60     SSLv3 ciphersuites disabled by securetransport on phone:
  61     SSL_RSA_WITH_IDEA_CBC_SHA, SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5
  62
  63 */
  64
  65 typedef struct _CipherSuiteName {
  66         SSLCipherSuite cipher;
  67         const char *name;
  68         bool dh_anonymous;
  69 } CipherSuiteName;
  70
  71 #define CIPHER(cipher, dh_anonymous) { cipher, #cipher, dh_anonymous }
  72
  73 static const CipherSuiteName ciphers[] = {
  74 #if 0
  75     /* TODO: Generate an ecdsa private key and certificate for the tests. */
  76     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, false),
  77     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, false),
  78     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, false),
  79     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, false),
  80     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, false),
  81     CIPHER(TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, false),
  82     CIPHER(TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, false),
  83     CIPHER(TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, false),
  84     CIPHER(TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, false),
  85     CIPHER(TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, false),
  86     CIPHER(TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, false),
  87     CIPHER(TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, false),
  88     CIPHER(TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, false),
  89     CIPHER(TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, false),
  90     CIPHER(TLS_ECDHE_RSA_WITH_RC4_128_SHA, false),
  91     CIPHER(TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, false),
  92     CIPHER(TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384, false),
  93     CIPHER(TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256, false),
  94     CIPHER(TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384, false),
  95     CIPHER(TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256, false),
  96     CIPHER(TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, false),
  97     CIPHER(TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256, false),
  98     CIPHER(TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384, false),
  99     CIPHER(TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256, false),
 100     CIPHER(TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, false),
 101     CIPHER(TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, false),
 102     CIPHER(TLS_ECDH_ECDSA_WITH_RC4_128_SHA, false),
 103     CIPHER(TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, false),
 104     CIPHER(TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, false),
 105     CIPHER(TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, false),
 106     CIPHER(TLS_ECDH_RSA_WITH_RC4_128_SHA, false),
 107     CIPHER(TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, false),
 108 #endif
 109     CIPHER(TLS_RSA_WITH_AES_256_GCM_SHA384, false),
 110     CIPHER(TLS_RSA_WITH_AES_128_GCM_SHA256, false),
 111     CIPHER(TLS_RSA_WITH_AES_256_CBC_SHA256, false),
 112     CIPHER(TLS_RSA_WITH_AES_128_CBC_SHA256, false),
 113     CIPHER(TLS_RSA_WITH_AES_128_CBC_SHA, false),
 114     CIPHER(SSL_RSA_WITH_RC4_128_SHA, false),
 115     CIPHER(SSL_RSA_WITH_RC4_128_MD5, false),
 116     CIPHER(TLS_RSA_WITH_AES_256_CBC_SHA, false),
 117     CIPHER(SSL_RSA_WITH_3DES_EDE_CBC_SHA, false),
 118     CIPHER(SSL_RSA_WITH_3DES_EDE_CBC_MD5, false),
 119     CIPHER(SSL_RSA_WITH_DES_CBC_SHA, false),
 120     CIPHER(SSL_RSA_WITH_DES_CBC_MD5, false),
 121     CIPHER(SSL_RSA_EXPORT_WITH_RC4_40_MD5, false),
 122     CIPHER(SSL_RSA_EXPORT_WITH_DES40_CBC_SHA, false),
 123     CIPHER(SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5, false),
 124     CIPHER(SSL_RSA_WITH_RC2_CBC_MD5, false),
 125     CIPHER(TLS_DHE_DSS_WITH_AES_256_GCM_SHA384, false),
 126     CIPHER(TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, false),
 127     CIPHER(TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, false),
 128     CIPHER(TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, false),
 129     CIPHER(TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, false),
 130     CIPHER(TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, false),
 131     CIPHER(TLS_DHE_DSS_WITH_AES_256_CBC_SHA256, false),
 132     CIPHER(TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, false),
 133     CIPHER(TLS_DHE_DSS_WITH_AES_128_CBC_SHA, false),
 134     CIPHER(TLS_DHE_RSA_WITH_AES_128_CBC_SHA, false),
 135     CIPHER(TLS_DHE_DSS_WITH_AES_256_CBC_SHA, false),
 136     CIPHER(TLS_DHE_RSA_WITH_AES_256_CBC_SHA, false),
 137     CIPHER(SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, false),
 138     CIPHER(SSL_DHE_RSA_WITH_DES_CBC_SHA, false),
 139     CIPHER(SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA, false),
 140     CIPHER(SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, false),
 141     CIPHER(SSL_DHE_DSS_WITH_DES_CBC_SHA, false),
 142     CIPHER(SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA, false),
 143     CIPHER(TLS_DH_anon_WITH_AES_256_GCM_SHA384, true),
 144     CIPHER(TLS_DH_anon_WITH_AES_128_GCM_SHA256, true),
 145     CIPHER(TLS_DH_anon_WITH_AES_128_CBC_SHA256, true),
 146     CIPHER(TLS_DH_anon_WITH_AES_256_CBC_SHA256, true),
 147     CIPHER(TLS_DH_anon_WITH_AES_128_CBC_SHA, true),
 148     CIPHER(TLS_DH_anon_WITH_AES_256_CBC_SHA, true),
 149     CIPHER(SSL_DH_anon_WITH_RC4_128_MD5, true),
 150     CIPHER(SSL_DH_anon_WITH_3DES_EDE_CBC_SHA, true),
 151     CIPHER(SSL_DH_anon_WITH_DES_CBC_SHA, true),
 152     CIPHER(SSL_DH_anon_EXPORT_WITH_RC4_40_MD5, true),
 153     CIPHER(SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA, true),
 154 #if 0
 155         CIPHER(TLS_ECDHE_ECDSA_WITH_NULL_SHA, false),
 156         CIPHER(TLS_ECDHE_RSA_WITH_NULL_SHA, false),
 157     CIPHER(TLS_ECDH_ECDSA_WITH_NULL_SHA, false),
 158         CIPHER(TLS_ECDH_RSA_WITH_NULL_SHA, false),
 159 #endif
 160     CIPHER(TLS_RSA_WITH_NULL_SHA256, false),
 161     CIPHER(SSL_RSA_WITH_NULL_SHA, false),
 162     CIPHER(SSL_RSA_WITH_NULL_MD5, false),
 163 #if 0
 164     /* We don't support these yet. */
 165     CIPHER(TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA, false),
 166     CIPHER(TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA, false),
 167     CIPHER(TLS_RSA_WITH_RC4_128_SHA, false),
 168     CIPHER(TLS_RSA_WITH_3DES_EDE_CBC_SHA, false),
 169     CIPHER(TLS_RSA_WITH_RC4_128_MD5, false),
 170     CIPHER(TLS_DH_DSS_WITH_AES_256_GCM_SHA384, false),
 171     CIPHER(TLS_DH_DSS_WITH_AES_128_GCM_SHA256, false),
 172     CIPHER(TLS_DH_RSA_WITH_AES_256_GCM_SHA384, false),
 173     CIPHER(TLS_DH_RSA_WITH_AES_128_GCM_SHA256, false),
 174     CIPHER(TLS_DH_DSS_WITH_AES_256_CBC_SHA256, false),
 175     CIPHER(TLS_DH_RSA_WITH_AES_256_CBC_SHA256, false),
 176     CIPHER(TLS_DH_DSS_WITH_AES_128_CBC_SHA256, false),
 177     CIPHER(TLS_DH_RSA_WITH_AES_128_CBC_SHA256, false),
 178     CIPHER(TLS_DH_DSS_WITH_AES_256_CBC_SHA, false),
 179     CIPHER(TLS_DH_RSA_WITH_AES_256_CBC_SHA, false),
 180         CIPHER(TLS_DH_DSS_WITH_AES_128_CBC_SHA, false),
 181     CIPHER(TLS_DH_RSA_WITH_AES_128_CBC_SHA, false),
 182     CIPHER(TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA, false),
 183     CIPHER(TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA, false),
 184     CIPHER(TLS_ECDH_anon_WITH_AES_256_CBC_SHA, false),
 185         CIPHER(TLS_ECDH_anon_WITH_AES_128_CBC_SHA, false),
 186     CIPHER(TLS_ECDH_anon_WITH_RC4_128_SHA, false),
 187     CIPHER(TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA, false),
 188     CIPHER(TLS_ECDH_anon_WITH_NULL_SHA, false),
 189 #endif
 190
 191     { -1, NULL }
 192 };
 193
 194 static int ciphers_len = array_size(ciphers);
 195
 196 #if 0 // currently unused
 197 static SSLCipherSuite sslcipher_atoi(const char *name)
 198 {
 199        const CipherSuiteName *a = ciphers;
 200        while(a->name) {
 201            if (0 == strcmp(a->name, name)) break;
 202            a++;
 203        }
 204        return a->cipher;
 205 }
 206
 207 static const char * sslcipher_itoa(SSLCipherSuite num)
 208 {
 209        const CipherSuiteName *a = ciphers;
 210        while(a->cipher >= 0) {
 211            if (num == a->cipher) break;
 212            a++;
 213        }
 214        return a->name;
 215 }
 216 #endif // currently unused
 217
 218 static unsigned char dh_param_512_bytes[] = {
 219   0x30, 0x46, 0x02, 0x41, 0x00, 0xdb, 0x3c, 0xfa, 0x13, 0xa6, 0xd2, 0x64,
 220   0xdf, 0xcc, 0x40, 0xb1, 0x21, 0xd4, 0xf2, 0xad, 0x22, 0x7f, 0xce, 0xa0,
 221   0xb9, 0x5b, 0x95, 0x1c, 0x2e, 0x99, 0xb0, 0x27, 0xd0, 0xed, 0xf4, 0xbd,
 222   0xbb, 0x36, 0x93, 0xd0, 0x9d, 0x2b, 0x32, 0xa3, 0x56, 0x53, 0xe3, 0x7b,
 223   0xed, 0xa1, 0x71, 0x82, 0x2e, 0x83, 0x14, 0xf9, 0xc0, 0x2f, 0x15, 0xcb,
 224   0xcf, 0x97, 0xab, 0x88, 0x49, 0x20, 0x28, 0x2e, 0x63, 0x02, 0x01, 0x02
 225 };
 226 static unsigned char *dh_param_512_der = dh_param_512_bytes;
 227 static unsigned int dh_param_512_der_len = 72;
 228
 229 /* openssl req -newkey rsa:512 -sha1 -days 365  -subj "/C=US/O=Apple Inc./OU=Apple Certification Authority/CN=localhost" -x509 -nodes -outform DER -keyout privkey.der -outform der -out cert.der */
 230 static unsigned char pkey_der[] = {
 231   0x30, 0x82, 0x01, 0x3b, 0x02, 0x01, 0x00, 0x02, 0x41, 0x00, 0xc0, 0x80,
 232   0x43, 0xf1, 0x4d, 0xdc, 0x9a, 0x24, 0xe7, 0x25, 0x7c, 0x8b, 0x8b, 0x65,
 233   0x87, 0x97, 0xed, 0x3f, 0xfa, 0xfe, 0xbe, 0xcb, 0x12, 0x43, 0x1f, 0x0c,
 234   0xb5, 0xbf, 0x6b, 0x81, 0xee, 0x1b, 0x46, 0x6a, 0x02, 0x86, 0x92, 0xec,
 235   0x8a, 0xb3, 0x65, 0x77, 0x15, 0xd0, 0x49, 0xb4, 0x22, 0x84, 0xf4, 0x85,
 236   0x56, 0x53, 0xf5, 0x5a, 0x3b, 0xad, 0x23, 0xa8, 0x0c, 0x24, 0xb7, 0xf5,
 237   0xf4, 0xa1, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x41, 0x00, 0xb8, 0x7f,
 238   0xf7, 0x1e, 0xa7, 0x0e, 0xc1, 0x9a, 0x8f, 0x04, 0x49, 0xcb, 0x81, 0x4e,
 239   0x4d, 0x58, 0x5a, 0xe7, 0x10, 0x8c, 0xea, 0x96, 0xbd, 0xa9, 0x21, 0x70,
 240   0x50, 0x1d, 0xe8, 0x4f, 0x7e, 0xc2, 0x71, 0xff, 0x55, 0xc5, 0xa7, 0x28,
 241   0xc8, 0xf2, 0xc7, 0x19, 0xd1, 0x2c, 0x10, 0x40, 0x39, 0xa8, 0xe1, 0x5b,
 242   0xbd, 0x97, 0x04, 0xff, 0xd3, 0x27, 0x9b, 0xce, 0x5e, 0x8d, 0x2f, 0x0e,
 243   0xd9, 0xf1, 0x02, 0x21, 0x00, 0xde, 0xfc, 0x18, 0x88, 0xa4, 0xef, 0x3b,
 244   0x18, 0xca, 0x54, 0x3f, 0xa8, 0x14, 0x96, 0x9a, 0xd7, 0x67, 0x57, 0x55,
 245   0xdc, 0x6b, 0xd4, 0x8e, 0x7d, 0xb4, 0x32, 0x00, 0x63, 0x67, 0x6a, 0x57,
 246   0x65, 0x02, 0x21, 0x00, 0xdd, 0x00, 0xba, 0xdc, 0xa1, 0xe2, 0x5c, 0xda,
 247   0xfe, 0xfc, 0x50, 0x1e, 0x9b, 0x95, 0x28, 0x34, 0xf2, 0x52, 0x31, 0x7a,
 248   0x15, 0x00, 0x6f, 0xcc, 0x08, 0x2c, 0x6d, 0x55, 0xb0, 0x24, 0x6a, 0x8d,
 249   0x02, 0x20, 0x14, 0xf5, 0x7d, 0x18, 0xda, 0xe7, 0xe1, 0x96, 0x22, 0xee,
 250   0x68, 0x4d, 0x54, 0x22, 0x13, 0xcb, 0xcb, 0x5a, 0xda, 0x27, 0x2d, 0xbb,
 251   0x7c, 0xe9, 0x33, 0xd6, 0xbf, 0x52, 0x98, 0x95, 0xd6, 0x41, 0x02, 0x21,
 252   0x00, 0xaa, 0x58, 0x8c, 0xaf, 0xd1, 0x6b, 0xdc, 0x6c, 0xc4, 0xcc, 0x10,
 253   0xa9, 0x76, 0xfc, 0xc2, 0x50, 0x05, 0x53, 0xcb, 0x65, 0x31, 0x58, 0xf3,
 254   0xd3, 0x4d, 0x9d, 0x88, 0xec, 0xda, 0x67, 0x47, 0x65, 0x02, 0x20, 0x53,
 255   0xf2, 0x49, 0x77, 0x7e, 0x10, 0xc1, 0xc4, 0xed, 0xc0, 0xaf, 0x99, 0x79,
 256   0xab, 0x7b, 0x25, 0x0e, 0x70, 0x36, 0xd2, 0xd1, 0xa3, 0x81, 0x0d, 0x83,
 257   0x4f, 0x6b, 0x1b, 0x48, 0xec, 0x87, 0x90
 258 };
 259 static unsigned int pkey_der_len = 319;
 260
 261 static unsigned char cert_der[] = {
 262   0x30, 0x82, 0x02, 0x79, 0x30, 0x82, 0x02, 0x23, 0xa0, 0x03, 0x02, 0x01,
 263   0x02, 0x02, 0x09, 0x00, 0xc2, 0xa8, 0x3b, 0xaa, 0x40, 0xa4, 0x29, 0x2b,
 264   0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
 265   0x05, 0x05, 0x00, 0x30, 0x5e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55,
 266   0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03,
 267   0x55, 0x04, 0x0a, 0x13, 0x0a, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x49,
 268   0x6e, 0x63, 0x2e, 0x31, 0x26, 0x30, 0x24, 0x06, 0x03, 0x55, 0x04, 0x0b,
 269   0x13, 0x1d, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x43, 0x65, 0x72, 0x74,
 270   0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x41, 0x75,
 271   0x74, 0x68, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x31, 0x12, 0x30, 0x10, 0x06,
 272   0x03, 0x55, 0x04, 0x03, 0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68,
 273   0x6f, 0x73, 0x74, 0x30, 0x1e, 0x17, 0x0d, 0x30, 0x38, 0x30, 0x39, 0x31,
 274   0x35, 0x32, 0x31, 0x35, 0x30, 0x35, 0x36, 0x5a, 0x17, 0x0d, 0x30, 0x39,
 275   0x30, 0x39, 0x31, 0x35, 0x32, 0x31, 0x35, 0x30, 0x35, 0x36, 0x5a, 0x30,
 276   0x5e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02,
 277   0x55, 0x53, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13,
 278   0x0a, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x49, 0x6e, 0x63, 0x2e, 0x31,
 279   0x26, 0x30, 0x24, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x13, 0x1d, 0x41, 0x70,
 280   0x70, 0x6c, 0x65, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63,
 281   0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f, 0x72,
 282   0x69, 0x74, 0x79, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x03,
 283   0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x30,
 284   0x5c, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
 285   0x01, 0x01, 0x05, 0x00, 0x03, 0x4b, 0x00, 0x30, 0x48, 0x02, 0x41, 0x00,
 286   0xc0, 0x80, 0x43, 0xf1, 0x4d, 0xdc, 0x9a, 0x24, 0xe7, 0x25, 0x7c, 0x8b,
 287   0x8b, 0x65, 0x87, 0x97, 0xed, 0x3f, 0xfa, 0xfe, 0xbe, 0xcb, 0x12, 0x43,
 288   0x1f, 0x0c, 0xb5, 0xbf, 0x6b, 0x81, 0xee, 0x1b, 0x46, 0x6a, 0x02, 0x86,
 289   0x92, 0xec, 0x8a, 0xb3, 0x65, 0x77, 0x15, 0xd0, 0x49, 0xb4, 0x22, 0x84,
 290   0xf4, 0x85, 0x56, 0x53, 0xf5, 0x5a, 0x3b, 0xad, 0x23, 0xa8, 0x0c, 0x24,
 291   0xb7, 0xf5, 0xf4, 0xa1, 0x02, 0x03, 0x01, 0x00, 0x01, 0xa3, 0x81, 0xc3,
 292   0x30, 0x81, 0xc0, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16,
 293   0x04, 0x14, 0xe3, 0x58, 0xab, 0x35, 0xc0, 0x58, 0xb8, 0x65, 0x40, 0xca,
 294   0x9b, 0x6c, 0xeb, 0x2f, 0xf5, 0xbf, 0xbd, 0x0b, 0xf3, 0xa6, 0x30, 0x81,
 295   0x90, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x81, 0x88, 0x30, 0x81, 0x85,
 296   0x80, 0x14, 0xe3, 0x58, 0xab, 0x35, 0xc0, 0x58, 0xb8, 0x65, 0x40, 0xca,
 297   0x9b, 0x6c, 0xeb, 0x2f, 0xf5, 0xbf, 0xbd, 0x0b, 0xf3, 0xa6, 0xa1, 0x62,
 298   0xa4, 0x60, 0x30, 0x5e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04,
 299   0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55,
 300   0x04, 0x0a, 0x13, 0x0a, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x49, 0x6e,
 301   0x63, 0x2e, 0x31, 0x26, 0x30, 0x24, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x13,
 302   0x1d, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69,
 303   0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x41, 0x75, 0x74,
 304   0x68, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03,
 305   0x55, 0x04, 0x03, 0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f,
 306   0x73, 0x74, 0x82, 0x09, 0x00, 0xc2, 0xa8, 0x3b, 0xaa, 0x40, 0xa4, 0x29,
 307   0x2b, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x04, 0x05, 0x30, 0x03,
 308   0x01, 0x01, 0xff, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
 309   0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x03, 0x41, 0x00, 0x41, 0x40, 0x07,
 310   0xde, 0x1f, 0xd0, 0x00, 0x62, 0x75, 0x36, 0xb3, 0x94, 0xa8, 0xac, 0x3b,
 311   0x98, 0xbb, 0x28, 0x56, 0xf6, 0x9f, 0xe3, 0x87, 0xd4, 0xa1, 0x7a, 0x85,
 312   0xce, 0x40, 0x8a, 0xfd, 0x12, 0xb4, 0x99, 0x8c, 0x1d, 0x05, 0x61, 0xdb,
 313   0x35, 0xb8, 0x04, 0x7c, 0xfb, 0xe4, 0x97, 0x88, 0x66, 0xa0, 0x54, 0x7b,
 314   0x1c, 0xce, 0x99, 0xd8, 0xd3, 0x99, 0x80, 0x40, 0x9b, 0xa2, 0x73, 0x8b,
 315   0xfd
 316 };
 317 static unsigned int cert_der_len = 637;
 318
 319 typedef struct {
 320     uint32_t session_id;
 321     bool is_session_resume;
 322     SSLContextRef handle;
 323     bool is_st;
 324     bool is_server;
 325     bool client_side_auth;
 326     bool dh_anonymous;
 327     int comm;
 328     CFArrayRef certs;
 329 } ssl_test_handle;
 330
 331 #if 0 // currently unused
 332 static CFArrayRef SecIdentityCopySSLClientAuthenticationChain(SecIdentityRef identity)
 333 {
 334    CFMutableArrayRef chain = NULL;
 335    SecPolicyRef policy = NULL;
 336    SecTrustRef trust = NULL;
 337    SecTrustResultType trust_result;
 338
 339    do {
 340        policy = SecPolicyCreateSSL(false, NULL);
 341        if (!policy)
 342            break;
 343
 344        SecCertificateRef cert = NULL;
 345        if (SecIdentityCopyCertificate(identity, &cert))
 346            break;
 347
 348        CFArrayRef certs = CFArrayCreate(NULL, (const void **)&cert,
 349                  1, &kCFTypeArrayCallBacks);
 350        CFRelease(cert);
 351        if (!certs)
 352            break;
 353
 354        if (SecTrustCreateWithCertificates(certs, policy, &trust))
 355            break;
 356        CFRelease(certs);
 357        CFRelease(policy);
 358        if (SecTrustEvaluate(trust, &trust_result))
 359            break;
 360
 361        int i, count = SecTrustGetCertificateCount(trust);
 362        chain = CFArrayCreateMutable(NULL, count, &kCFTypeArrayCallBacks);
 363        CFArrayAppendValue(chain, identity);
 364        for (i = 1; i < count; i++) {
 365            if ((i+1 == count) && (trust_result == kSecTrustResultUnspecified))
 366                continue; /* skip anchor if chain is complete */
 367            SecCertificateRef s = SecTrustGetCertificateAtIndex(trust, i);
 368            CFArrayAppendValue(chain, s);
 369        }
 370    } while (0);
 371    if (trust)
 372        CFRelease(trust);
 373    if (policy)
 374        CFRelease(policy);
 375    return chain;
 376 }
 377 #endif // currently unused
 378
 379 static CFArrayRef server_chain()
 380 {
 381     SecKeyRef pkey = SecKeyCreateRSAPrivateKey(kCFAllocatorDefault,
 382         pkey_der, pkey_der_len, kSecKeyEncodingPkcs1);
 383     SecCertificateRef cert = SecCertificateCreateWithBytes(kCFAllocatorDefault,
 384         cert_der, cert_der_len);
 385     SecIdentityRef ident = SecIdentityCreate(kCFAllocatorDefault, cert, pkey);
 386     CFRelease(pkey);
 387     CFRelease(cert);
 388     CFArrayRef items = CFArrayCreate(kCFAllocatorDefault,
 389         (const void **)&ident, 1, &kCFTypeArrayCallBacks);
 390     CFRelease(ident);
 391     return items;
 392 }
 393
 394 // MARK: -
 395 // MARK: SecureTransport support
 396
 397 #if 0
 398 static void hexdump(const uint8_t *bytes, size_t len) {
 399         size_t ix;
 400     printf("socket write(%p, %lu)\n", bytes, len);
 401         for (ix = 0; ix < len; ++ix) {
 402         if (!(ix % 16))
 403             printf("\n");
 404                 printf("%02X ", bytes[ix]);
 405         }
 406         printf("\n");
 407 }
 408 #else
 409 #define hexdump(bytes, len)
 410 #endif
 411
 412 static OSStatus SocketWrite(SSLConnectionRef conn, const void *data, size_t *length)
 413 {
 414         size_t len = *length;
 415         uint8_t *ptr = (uint8_t *)data;
 416
 417     do {
 418         ssize_t ret;
 419         do {
 420             hexdump(ptr, len);
 421             ret = write((int)conn, ptr, len);
 422             if (ret < 0)
 423                 perror("send");
 424         } while ((ret < 0) && (errno == EAGAIN || errno == EINTR));
 425         if (ret > 0) {
 426             len -= ret;
 427             ptr += ret;
 428         }
 429         else
 430             return -36;
 431     } while (len > 0);
 432
 433     *length = *length - len;
 434     return errSecSuccess;
 435 }
 436
 437 static OSStatus SocketRead(SSLConnectionRef conn, void *data, size_t *length)
 438 {
 439         size_t len = *length;
 440         uint8_t *ptr = (uint8_t *)data;
 441
 442     do {
 443         ssize_t ret;
 444         do {
 445             ret = read((int)conn, ptr, len);
 446             if (ret < 0)
 447                 perror("send");
 448         } while ((ret < 0) && (errno == EAGAIN || errno == EINTR));
 449         if (ret > 0) {
 450             len -= ret;
 451             ptr += ret;
 452         }
 453         else
 454             return -36;
 455     } while (len > 0);
 456
 457     *length = *length - len;
 458     return errSecSuccess;
 459 }
 460
 461 static unsigned char dn[] = {
 462   0x30, 0x5e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
 463   0x02, 0x55, 0x53, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0a,
 464   0x13, 0x0a, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x20, 0x49, 0x6e, 0x63, 0x2e,
 465   0x31, 0x26, 0x30, 0x24, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x13, 0x1d, 0x41,
 466   0x70, 0x70, 0x6c, 0x65, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69,
 467   0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f,
 468   0x72, 0x69, 0x74, 0x79, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04,
 469   0x03, 0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74
 470 };
 471 static unsigned int dn_len = 96;
 472
 473 static SSLContextRef make_ssl_ref(bool server, bool client_side_auth, bool dh_anonymous,
 474     bool dtls, int sock, CFArrayRef certs)
 475 {
 476     SSLContextRef ctx = NULL;
 477     if(dtls)
 478         require_noerr(SSLNewDatagramContext(server, &ctx), out);
 479     else
 480         require_noerr(SSLNewContext(server, &ctx), out);
 481     require_noerr(SSLSetIOFuncs(ctx,
 482         (SSLReadFunc)SocketRead, (SSLWriteFunc)SocketWrite), out);
 483     require_noerr(SSLSetConnection(ctx, (SSLConnectionRef)sock), out);
 484     static const char *peer_domain_name = "localhost";
 485     require_noerr(SSLSetPeerDomainName(ctx, peer_domain_name,
 486         strlen(peer_domain_name)), out);
 487
 488     if (!dh_anonymous) {
 489         if (server)
 490             require_noerr(SSLSetCertificate(ctx, certs), out);
 491         if (client_side_auth && server) {
 492             require_noerr(SSLSetClientSideAuthenticate(ctx, kAlwaysAuthenticate), out);
 493             require_noerr(SSLAddDistinguishedName(ctx, dn, dn_len), out);
 494         }
 495 #if 0 /* Setting client certificate in advance */
 496         if (client_side_auth && !server)
 497             require_noerr(SSLSetCertificate(ctx, certs), out);
 498 #endif
 499         if (client_side_auth && !server) /* enable break from SSLHandshake */
 500             require_noerr(SSLSetSessionOption(ctx,
 501                 kSSLSessionOptionBreakOnCertRequested, true), out);
 502         require_noerr(SSLSetSessionOption(ctx,
 503             kSSLSessionOptionBreakOnServerAuth, true), out);
 504     }
 505
 506     /* Tell SecureTransport to not check certs itself: it will break out of the
 507        handshake to let us take care of it instead. */
 508     require_noerr(SSLSetEnableCertVerify(ctx, false), out);
 509
 510     if (server) {
 511         require_noerr(SSLSetDiffieHellmanParams(ctx,
 512             dh_param_512_der, dh_param_512_der_len), out);
 513     }
 514     else /* if client */ {
 515     }
 516
 517     return ctx;
 518 out:
 519     if (ctx)
 520         SSLDisposeContext(ctx);
 521     return NULL;
 522 }
 523
 524 static void *securetransport_ssl_thread(void *arg)
 525 {
 526     OSStatus ortn;
 527     ssl_test_handle * ssl = (ssl_test_handle *)arg;
 528     SSLContextRef ctx = ssl->handle;
 529     SecTrustRef trust = NULL;
 530     bool got_server_auth = false, got_client_cert_req = false;
 531
 532     //uint64_t start = mach_absolute_time();
 533     do {
 534         ortn = SSLHandshake(ctx);
 535
 536         if (ortn == errSSLServerAuthCompleted)
 537         {
 538             require_string(!got_server_auth, out, "second server auth");
 539             require_string(!got_client_cert_req, out, "got client cert req before server auth");
 540             got_server_auth = true;
 541             require_string(!trust, out, "Got errSSLServerAuthCompleted twice?");
 542             /* verify peer cert chain */
 543             require_noerr(SSLCopyPeerTrust(ctx, &trust), out);
 544             SecTrustResultType trust_result = 0;
 545             /* this won't verify without setting up a trusted anchor */
 546             require_noerr(SecTrustEvaluate(trust, &trust_result), out);
 547
 548             CFIndex n_certs = SecTrustGetCertificateCount(trust);
 549             /*fprintf(stderr, "%ld certs; trust_eval: %d\n", n_certs, trust_result); */
 550
 551             CFMutableArrayRef peer_cert_array =
 552                 CFArrayCreateMutable(NULL, n_certs, &kCFTypeArrayCallBacks);
 553             CFMutableArrayRef orig_peer_cert_array =
 554                 CFArrayCreateMutableCopy(NULL, n_certs, ssl->certs);
 555             while (n_certs--)
 556                 CFArrayInsertValueAtIndex(peer_cert_array, 0,
 557                     SecTrustGetCertificateAtIndex(trust, n_certs));
 558
 559             SecIdentityRef ident =
 560                 (SecIdentityRef)CFArrayGetValueAtIndex(orig_peer_cert_array, 0);
 561             SecCertificateRef peer_cert = NULL;
 562             require_noerr(SecIdentityCopyCertificate(ident, &peer_cert), out);
 563             CFArraySetValueAtIndex(orig_peer_cert_array, 0, peer_cert);
 564             CFRelease(peer_cert);
 565
 566             require(CFEqual(orig_peer_cert_array, peer_cert_array), out);
 567             CFRelease(orig_peer_cert_array);
 568             CFRelease(peer_cert_array);
 569
 570             /*
 571             CFStringRef cert_name = SecCertificateCopySubjectSummary(cert);
 572             char cert_name_buffer[1024];
 573             require(CFStringGetFileSystemRepresentation(cert_name,
 574                 cert_name_buffer, sizeof(cert_name_buffer)), out);
 575             fprintf(stderr, "cert name: %s\n", cert_name_buffer);
 576             CFRelease(trust);
 577             */
 578         } else if (ortn == errSSLClientCertRequested) {
 579             require_string(!got_client_cert_req, out, "second client cert req");
 580             require_string(got_server_auth, out, "didn't get server auth first");
 581             got_client_cert_req = true;
 582
 583             /* set client cert */
 584             require_string(!ssl->is_server, out, "errSSLClientCertRequested while running server");
 585             require_string(!ssl->dh_anonymous, out, "errSSLClientCertRequested while running anon DH");
 586
 587             CFArrayRef DNs = NULL;
 588             require_noerr(SSLCopyDistinguishedNames     (ctx, &DNs), out);
 589             require(DNs, out);
 590             CFRelease(DNs);
 591
 592             require_string(ssl->client_side_auth, out, "errSSLClientCertRequested in run not testing that");
 593             require_noerr(SSLSetCertificate(ctx, ssl->certs), out);
 594         }
 595     } while (ortn == errSSLWouldBlock
 596         || ortn == errSSLServerAuthCompleted
 597         || ortn == errSSLClientCertRequested);
 598     require_noerr_action_quiet(ortn, out,
 599         fprintf(stderr, "Fell out of SSLHandshake with error: %d\n", (int)ortn));
 600
 601     if (!ssl->is_server && !ssl->dh_anonymous && !ssl->is_session_resume) {
 602         require_string(got_server_auth, out, "never got server auth");
 603         if (ssl->client_side_auth)
 604             require_string(got_client_cert_req, out, "never got client cert req");
 605     }
 606     //uint64_t elapsed = mach_absolute_time() - start;
 607     //fprintf(stderr, "setr elapsed: %lld\n", elapsed);
 608
 609     /*
 610     SSLProtocol proto = kSSLProtocolUnknown;
 611     require_noerr_quiet(SSLGetNegotiatedProtocolVersion(ctx, &proto), out); */
 612
 613     SSLCipherSuite cipherSuite;
 614     require_noerr_quiet(ortn = SSLGetNegotiatedCipher(ctx, &cipherSuite), out);
 615     //fprintf(stderr, "st negotiated %s\n", sslcipher_itoa(cipherSuite));
 616
 617         Boolean sessionWasResumed = false;
 618     uint8_t session_id_data[MAX_SESSION_ID_LENGTH];
 619     size_t session_id_length = sizeof(session_id_data);
 620     require_noerr_quiet(ortn = SSLGetResumableSessionInfo(ctx, &sessionWasResumed, session_id_data, &session_id_length), out);
 621     require_action(ssl->dh_anonymous || (ssl->is_session_resume == sessionWasResumed), out, ortn = -1);
 622     // if (sessionWasResumed) fprintf(stderr, "st resumed session\n");
 623     //hexdump(session_id_data, session_id_length);
 624
 625     unsigned char ibuf[4096], obuf[4096];
 626     size_t len;
 627     if (ssl->is_server) {
 628         SecRandomCopyBytes(kSecRandomDefault, sizeof(obuf), obuf);
 629         require_noerr_quiet(ortn = SSLWrite(ctx, obuf, sizeof(obuf), &len), out);
 630         require_action_quiet(len == sizeof(obuf), out, ortn = -1);
 631     }
 632     require_noerr_quiet(ortn = SSLRead(ctx, ibuf, sizeof(ibuf), &len), out);
 633     require_action_quiet(len == sizeof(ibuf), out, ortn = -1);
 634
 635     if (ssl->is_server) {
 636         require_noerr(memcmp(ibuf, obuf, sizeof(ibuf)), out);
 637     } else {
 638         require_noerr_quiet(ortn = SSLWrite(ctx, ibuf, sizeof(ibuf), &len), out);
 639         require_action_quiet(len == sizeof(ibuf), out, ortn = -1);
 640     }
 641
 642 out:
 643     SSLClose(ctx);
 644     SSLDisposeContext(ctx);
 645     if (trust) CFRelease(trust);
 646
 647     pthread_exit((void *)(intptr_t)ortn);
 648     return NULL;
 649 }
 650
 651
 652
 653 static ssl_test_handle *
 654 ssl_test_handle_create(uint32_t session_id, bool resume, bool server, bool client_side_auth, bool dh_anonymous, bool dtls,
 655     int comm, CFArrayRef certs)
 656 {
 657     ssl_test_handle *handle = calloc(1, sizeof(ssl_test_handle));
 658     if (handle) {
 659         handle->session_id = session_id;
 660         handle->is_session_resume = resume;
 661         handle->is_server = server;
 662         handle->client_side_auth = client_side_auth;
 663         handle->dh_anonymous = dh_anonymous;
 664         handle->comm = comm;
 665         handle->certs = certs;
 666         handle->handle = make_ssl_ref(server, client_side_auth, dh_anonymous, dtls, comm, certs);
 667     }
 668     return handle;
 669 }
 670
 671 static void
 672 tests(void)
 673 {
 674     pthread_t client_thread, server_thread;
 675     CFArrayRef server_certs = server_chain();
 676     ok(server_certs, "got server certs");
 677
 678 #if 0
 679     int i=0, j=1, k=1; {
 680 #else
 681     int d,i,k,l;
 682     for (d=0;d<2; d++)  /* dtls or not dtls */
 683     for (k=0; k<2; k++)
 684     for (i=0; ciphers[i].cipher != (SSLCipherSuite)(-1); i++)
 685     for (l = 0; l<2; l++) {
 686 #endif
 687         SKIP: {
 688             skip("ST doesn't support resumption", 1, l != 1);
 689
 690             int sp[2];
 691             if (socketpair(AF_UNIX, SOCK_STREAM, 0, sp)) exit(errno);
 692
 693             ssl_test_handle *server, *client;
 694
 695             bool client_side_auth = (k);
 696
 697             uint32_t session_id = (k+1) << 16 | 1 << 8 | (i+1);
 698             //fprintf(stderr, "session_id: %d\n", session_id);
 699             server = ssl_test_handle_create(session_id, (l == 1), true /*server*/,
 700                 client_side_auth, ciphers[i].dh_anonymous, d,
 701                 sp[0], server_certs);
 702             client = ssl_test_handle_create(session_id, (l == 1), false/*client*/,
 703                 client_side_auth, ciphers[i].dh_anonymous, d,
 704                 sp[1], server_certs);
 705
 706             require_noerr(SSLSetPeerID(server->handle, &session_id, sizeof(session_id)), out);
 707             require_noerr(SSLSetPeerID(client->handle, &session_id, sizeof(session_id)), out);
 708
 709             /* set fixed cipher on client and server */
 710             require_noerr(SSLSetEnabledCiphers(client->handle, &ciphers[i].cipher, 1), out);
 711             require_noerr(SSLSetEnabledCiphers(server->handle, &ciphers[i].cipher, 1), out);
 712
 713             char test_description[1024];
 714             snprintf(test_description, sizeof(test_description),
 715                      "%40s ADH:%d CSA:%d DTLS:%d",
 716                      ciphers[i].name,
 717                      server->dh_anonymous,
 718                      server->client_side_auth,
 719                      d);
 720
 721             printf("Echo test: %s\n", test_description);
 722
 723             pthread_create(&client_thread, NULL, securetransport_ssl_thread, client);
 724             pthread_create(&server_thread, NULL, securetransport_ssl_thread, server);
 725
 726             int server_err, client_err;
 727             pthread_join(client_thread, (void*)&client_err);
 728             pthread_join(server_thread, (void*)&server_err);
 729
 730             ok(!server_err && !client_err, "%40s ADH:%d CSA:%d DTLS:%d",
 731                ciphers[i].name,
 732                server->dh_anonymous,
 733                server->client_side_auth,
 734                d);
 735         out:
 736             close(sp[0]);
 737             close(sp[1]);
 738         }
 739     } /* all configs */
 740
 741     CFRelease(server_certs);
 742
 743 }
 744
 745 int ssl_39_echo(int argc, char *const *argv)
 746 {
 747     plan_tests(2 * 2 * 2 * 3 * (ciphers_len-1)/* client auth on/off * #configs * #ciphers */
 748                 + 1 /*cert*/);
 749
 750
 751     tests();
 752
 753     return 0;
 754 }
 755
 756 #endif
 757
 758 /*
 759 TODO: count errSSLWouldBlock
 760 TODO: skip tests that don't matter: client_auth and anonymous dh
 761 TODO: we seem to only be negotiating tls - force a round of sslv3
 762 TODO: allow secure transport to also defer client side auth to client
 763 TODO: make sure anonymous dh is never selected if not expicitly enabled
 764 TODO: make sure DHE is not available if not explicitly enabled and no parameters
 765       are set
 766 TODO: resumable sessions
 767 */