doc/apps/ciphers.pod

   1 =pod
   2
   3 =head1 NAME
   4
   5 ciphers - SSL cipher display and cipher list tool.
   6
   7 =head1 SYNOPSIS
   8
   9 B<openssl> B<ciphers>
  10 [B<-s>]
  11 [B<-v>]
  12 [B<-V>]
  13 [B<-ssl3>]
  14 [B<-tls1>]
  15 [B<-stdname>]
  16 [B<cipherlist>]
  17
  18 =head1 DESCRIPTION
  19
  20 The B<ciphers> command converts textual OpenSSL cipher lists into ordered
  21 SSL cipher preference lists. It can be used as a test tool to determine
  22 the appropriate cipherlist.
  23
  24 =head1 COMMAND OPTIONS
  25
  26 =over 4
  27
  28 =item B<-s>
  29
  30 Only list supported ciphers: those consistent with the security level. This
  31 is the actual cipher list an application will support. If this option is
  32 not used then ciphers excluded by the security level will still be listed.
  33
  34 =item B<-v>
  35
  36 Verbose option. List ciphers with a complete description of
  37 protocol version, key exchange,
  38 authentication, encryption and mac algorithms used along with any key size
  39 restrictions and whether the algorithm is classed as an "export" cipher.
  40
  41 =item B<-V>
  42
  43 Like B<-v>, but include cipher suite codes in output (hex format).
  44
  45 =item B<-ssl3>
  46
  47 only include SSL v3 ciphers.
  48
  49 =item B<-tls1>
  50
  51 only include TLS v1 ciphers.
  52
  53 =item B<-stdname>
  54
  55 precede each ciphersuite by its standard name: only available is OpenSSL
  56 is built with tracing enabled (B<enable-ssl-trace> argument to Configure).
  57
  58 =item B<-h>, B<-?>
  59
  60 print a brief usage message.
  61
  62 =item B<cipherlist>
  63
  64 a cipher list to convert to a cipher preference list. If it is not included
  65 then the default cipher list will be used. The format is described below.
  66
  67 =back
  68
  69 =head1 CIPHER LIST FORMAT
  70
  71 The cipher list consists of one or more I<cipher strings> separated by colons.
  72 Commas or spaces are also acceptable separators but colons are normally used.
  73
  74 The actual cipher string can take several different forms.
  75
  76 It can consist of a single cipher suite such as B<RC4-SHA>.
  77
  78 It can represent a list of cipher suites containing a certain algorithm, or
  79 cipher suites of a certain type. For example B<SHA1> represents all ciphers
  80 suites using the digest algorithm SHA1 and B<SSLv3> represents all SSL v3
  81 algorithms.
  82
  83 Lists of cipher suites can be combined in a single cipher string using the
  84 B<+> character. This is used as a logical B<and> operation. For example
  85 B<SHA1+DES> represents all cipher suites containing the SHA1 B<and> the DES
  86 algorithms.
  87
  88 Each cipher string can be optionally preceded by the characters B<!>,
  89 B<-> or B<+>.
  90
  91 If B<!> is used then the ciphers are permanently deleted from the list.
  92 The ciphers deleted can never reappear in the list even if they are
  93 explicitly stated.
  94
  95 If B<-> is used then the ciphers are deleted from the list, but some or
  96 all of the ciphers can be added again by later options.
  97
  98 If B<+> is used then the ciphers are moved to the end of the list. This
  99 option doesn't add any new ciphers it just moves matching existing ones.
 100
 101 If none of these characters is present then the string is just interpreted
 102 as a list of ciphers to be appended to the current preference list. If the
 103 list includes any ciphers already present they will be ignored: that is they
 104 will not moved to the end of the list.
 105
 106 The cipher string B<@STRENGTH> can be used at any point to sort the current
 107 cipher list in order of encryption algorithm key length.
 108
 109 The cipher string B<@SECLEVEL=n> can be used at any point to set the security
 110 level to B<n>.
 111
 112 =head1 CIPHER STRINGS
 113
 114 The following is a list of all permitted cipher strings and their meanings.
 115
 116 =over 4
 117
 118 =item B<DEFAULT>
 119
 120 the default cipher list. This is determined at compile time and, as of OpenSSL
 121 1.0.0, is normally B<ALL:!aNULL:!eNULL>. This must be the first cipher string
 122 specified.
 123
 124 =item B<COMPLEMENTOFDEFAULT>
 125
 126 the ciphers included in B<ALL>, but not enabled by default. Currently
 127 this is B<ADH> and B<AECDH>. Note that this rule does not cover B<eNULL>,
 128 which is not included by B<ALL> (use B<COMPLEMENTOFALL> if necessary).
 129
 130 =item B<ALL>
 131
 132 all cipher suites except the B<eNULL> ciphers which must be explicitly enabled;
 133 as of OpenSSL, the B<ALL> cipher suites are reasonably ordered by default
 134
 135 =item B<COMPLEMENTOFALL>
 136
 137 the cipher suites not enabled by B<ALL>, currently being B<eNULL>.
 138
 139 =item B<HIGH>
 140
 141 "high" encryption cipher suites. This currently means those with key lengths
 142 larger than 128 bits, and some cipher suites with 128-bit keys.
 143
 144 =item B<MEDIUM>
 145
 146 "medium" encryption cipher suites, currently some of those using 128 bit
 147 encryption.
 148
 149 =item B<LOW>
 150
 151 "low" encryption cipher suites, currently those using 64 or 56 bit encryption
 152 algorithms but excluding export cipher suites.
 153
 154 =item B<EXP>, B<EXPORT>
 155
 156 export encryption algorithms. Including 40 and 56 bits algorithms.
 157
 158 =item B<EXPORT40>
 159
 160 40 bit export encryption algorithms
 161
 162 =item B<EXPORT56>
 163
 164 56 bit export encryption algorithms. In OpenSSL 0.9.8c and later the set of
 165 56 bit export ciphers is empty unless OpenSSL has been explicitly configured
 166 with support for experimental ciphers.
 167
 168 =item B<eNULL>, B<NULL>
 169
 170 the "NULL" ciphers that is those offering no encryption. Because these offer no
 171 encryption at all and are a security risk they are disabled unless explicitly
 172 included.
 173
 174 =item B<aNULL>
 175
 176 the cipher suites offering no authentication. This is currently the anonymous
 177 DH algorithms and anonymous ECDH algorithms. These cipher suites are vulnerable
 178 to a "man in the middle" attack and so their use is normally discouraged.
 179
 180 =item B<kRSA>, B<aRSA>, B<RSA>
 181
 182 cipher suites using RSA key exchange, authentication or either respectively.
 183
 184 =item B<kDHr>, B<kDHd>, B<kDH>
 185
 186 cipher suites using DH key agreement and DH certificates signed by CAs with RSA
 187 and DSS keys or either respectively.
 188
 189 =item B<kDHE>, B<kEDH>
 190
 191 cipher suites using ephemeral DH key agreement, including anonymous cipher
 192 suites.
 193
 194 =item B<DHE>, B<EDH>
 195
 196 cipher suites using authenticated ephemeral DH key agreement.
 197
 198 =item B<ADH>
 199
 200 anonymous DH cipher suites, note that this does not include anonymous Elliptic
 201 Curve DH (ECDH) cipher suites.
 202
 203 =item B<DH>
 204
 205 cipher suites using DH, including anonymous DH, ephemeral DH and fixed DH.
 206
 207 =item B<kECDHr>, B<kECDHe>, B<kECDH>
 208
 209 cipher suites using fixed ECDH key agreement signed by CAs with RSA and ECDSA
 210 keys or either respectively.
 211
 212 =item B<kEECDH>, B<kECDHE>
 213
 214 cipher suites using ephemeral ECDH key agreement, including anonymous
 215 cipher suites.
 216
 217 =item B<ECDHE>, B<EECDH>
 218
 219 cipher suites using authenticated ephemeral ECDH key agreement.
 220
 221 =item B<AECDH>
 222
 223 anonymous Elliptic Curve Diffie Hellman cipher suites.
 224
 225 =item B<ECDH>
 226
 227 cipher suites using ECDH key exchange, including anonymous, ephemeral and
 228 fixed ECDH.
 229
 230 =item B<aDSS>, B<DSS>
 231
 232 cipher suites using DSS authentication, i.e. the certificates carry DSS keys.
 233
 234 =item B<aDH>
 235
 236 cipher suites effectively using DH authentication, i.e. the certificates carry
 237 DH keys.
 238
 239 =item B<aECDH>
 240
 241 cipher suites effectively using ECDH authentication, i.e. the certificates
 242 carry ECDH keys.
 243
 244 =item B<aECDSA>, B<ECDSA>
 245
 246 cipher suites using ECDSA authentication, i.e. the certificates carry ECDSA
 247 keys.
 248
 249 =item B<TLSv1.2>, B<TLSv1>, B<SSLv3>
 250
 251 TLS v1.2, TLS v1.0 or SSL v3.0 cipher suites respectively. Note:
 252 there are no ciphersuites specific to TLS v1.1.
 253
 254 =item B<AES128>, B<AES256>, B<AES>
 255
 256 cipher suites using 128 bit AES, 256 bit AES or either 128 or 256 bit AES.
 257
 258 =item B<AESGCM>
 259
 260 AES in Galois Counter Mode (GCM): these ciphersuites are only supported
 261 in TLS v1.2.
 262
 263 =item B<CAMELLIA128>, B<CAMELLIA256>, B<CAMELLIA>
 264
 265 cipher suites using 128 bit CAMELLIA, 256 bit CAMELLIA or either 128 or 256 bit
 266 CAMELLIA.
 267
 268 =item B<3DES>
 269
 270 cipher suites using triple DES.
 271
 272 =item B<DES>
 273
 274 cipher suites using DES (not triple DES).
 275
 276 =item B<RC4>
 277
 278 cipher suites using RC4.
 279
 280 =item B<RC2>
 281
 282 cipher suites using RC2.
 283
 284 =item B<IDEA>
 285
 286 cipher suites using IDEA.
 287
 288 =item B<SEED>
 289
 290 cipher suites using SEED.
 291
 292 =item B<MD5>
 293
 294 cipher suites using MD5.
 295
 296 =item B<SHA1>, B<SHA>
 297
 298 cipher suites using SHA1.
 299
 300 =item B<SHA256>, B<SHA384>
 301
 302 ciphersuites using SHA256 or SHA384.
 303
 304 =item B<aGOST>
 305
 306 cipher suites using GOST R 34.10 (either 2001 or 94) for authentication
 307 (needs an engine supporting GOST algorithms).
 308
 309 =item B<aGOST01>
 310
 311 cipher suites using GOST R 34.10-2001 authentication.
 312
 313 =item B<aGOST94>
 314
 315 cipher suites using GOST R 34.10-94 authentication (note that R 34.10-94
 316 standard has been expired so use GOST R 34.10-2001)
 317
 318 =item B<kGOST>
 319
 320 cipher suites, using VKO 34.10 key exchange, specified in the RFC 4357.
 321
 322 =item B<GOST94>
 323
 324 cipher suites, using HMAC based on GOST R 34.11-94.
 325
 326 =item B<GOST89MAC>
 327
 328 cipher suites using GOST 28147-89 MAC B<instead of> HMAC.
 329
 330 =item B<PSK>
 331
 332 all cipher suites using pre-shared keys (PSK).
 333
 334 =item B<kPSK>, B<kECDHEPSK>, B<kDHEPSK>, B<kRSAPSK>
 335
 336 cipher suites using PSK key exchange, ECDHE_PSK, DHE_PSK or RSA_PSK.
 337
 338 =item B<aPSK>
 339
 340 cipher suites using PSK authentication (currently all PSK modes apart from
 341 RSA_PSK).
 342
 343 =item B<SUITEB128>, B<SUITEB128ONLY>, B<SUITEB192>
 344
 345 enables suite B mode operation using 128 (permitting 192 bit mode by peer)
 346 128 bit (not permitting 192 bit by peer) or 192 bit level of security
 347 respectively. If used these cipherstrings should appear first in the cipher
 348 list and anything after them is ignored. Setting Suite B mode has additional
 349 consequences required to comply with RFC6460. In particular the supported
 350 signature algorithms is reduced to support only ECDSA and SHA256 or SHA384,
 351 only the elliptic curves P-256 and P-384 can be used and only the two suite B
 352 compliant ciphersuites (ECDHE-ECDSA-AES128-GCM-SHA256 and
 353 ECDHE-ECDSA-AES256-GCM-SHA384) are permissible.
 354
 355 =back
 356
 357 =head1 CIPHER SUITE NAMES
 358
 359 The following lists give the SSL or TLS cipher suites names from the
 360 relevant specification and their OpenSSL equivalents. It should be noted,
 361 that several cipher suite names do not include the authentication used,
 362 e.g. DES-CBC3-SHA. In these cases, RSA authentication is used.
 363
 364 =head2 SSL v3.0 cipher suites.
 365
 366  SSL_RSA_WITH_NULL_MD5                   NULL-MD5
 367  SSL_RSA_WITH_NULL_SHA                   NULL-SHA
 368  SSL_RSA_EXPORT_WITH_RC4_40_MD5          EXP-RC4-MD5
 369  SSL_RSA_WITH_RC4_128_MD5                RC4-MD5
 370  SSL_RSA_WITH_RC4_128_SHA                RC4-SHA
 371  SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5      EXP-RC2-CBC-MD5
 372  SSL_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
 373  SSL_RSA_EXPORT_WITH_DES40_CBC_SHA       EXP-DES-CBC-SHA
 374  SSL_RSA_WITH_DES_CBC_SHA                DES-CBC-SHA
 375  SSL_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA
 376
 377  SSL_DH_DSS_WITH_DES_CBC_SHA             DH-DSS-DES-CBC-SHA
 378  SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA        DH-DSS-DES-CBC3-SHA
 379  SSL_DH_RSA_WITH_DES_CBC_SHA             DH-RSA-DES-CBC-SHA
 380  SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA        DH-RSA-DES-CBC3-SHA
 381  SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   EXP-DHE-DSS-DES-CBC-SHA
 382  SSL_DHE_DSS_WITH_DES_CBC_SHA            DHE-DSS-CBC-SHA
 383  SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA       DHE-DSS-DES-CBC3-SHA
 384  SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA   EXP-DHE-RSA-DES-CBC-SHA
 385  SSL_DHE_RSA_WITH_DES_CBC_SHA            DHE-RSA-DES-CBC-SHA
 386  SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA       DHE-RSA-DES-CBC3-SHA
 387
 388  SSL_DH_anon_EXPORT_WITH_RC4_40_MD5      EXP-ADH-RC4-MD5
 389  SSL_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
 390  SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA   EXP-ADH-DES-CBC-SHA
 391  SSL_DH_anon_WITH_DES_CBC_SHA            ADH-DES-CBC-SHA
 392  SSL_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA
 393
 394  SSL_FORTEZZA_KEA_WITH_NULL_SHA          Not implemented.
 395  SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA  Not implemented.
 396  SSL_FORTEZZA_KEA_WITH_RC4_128_SHA       Not implemented.
 397
 398 =head2 TLS v1.0 cipher suites.
 399
 400  TLS_RSA_WITH_NULL_MD5                   NULL-MD5
 401  TLS_RSA_WITH_NULL_SHA                   NULL-SHA
 402  TLS_RSA_EXPORT_WITH_RC4_40_MD5          EXP-RC4-MD5
 403  TLS_RSA_WITH_RC4_128_MD5                RC4-MD5
 404  TLS_RSA_WITH_RC4_128_SHA                RC4-SHA
 405  TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5      EXP-RC2-CBC-MD5
 406  TLS_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
 407  TLS_RSA_EXPORT_WITH_DES40_CBC_SHA       EXP-DES-CBC-SHA
 408  TLS_RSA_WITH_DES_CBC_SHA                DES-CBC-SHA
 409  TLS_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA
 410
 411  TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA    Not implemented.
 412  TLS_DH_DSS_WITH_DES_CBC_SHA             Not implemented.
 413  TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA        Not implemented.
 414  TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA    Not implemented.
 415  TLS_DH_RSA_WITH_DES_CBC_SHA             Not implemented.
 416  TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA        Not implemented.
 417  TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   EXP-DHE-DSS-DES-CBC-SHA
 418  TLS_DHE_DSS_WITH_DES_CBC_SHA            DHE-DSS-CBC-SHA
 419  TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA       DHE-DSS-DES-CBC3-SHA
 420  TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA   EXP-DHE-RSA-DES-CBC-SHA
 421  TLS_DHE_RSA_WITH_DES_CBC_SHA            DHE-RSA-DES-CBC-SHA
 422  TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA       DHE-RSA-DES-CBC3-SHA
 423
 424  TLS_DH_anon_EXPORT_WITH_RC4_40_MD5      EXP-ADH-RC4-MD5
 425  TLS_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
 426  TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA   EXP-ADH-DES-CBC-SHA
 427  TLS_DH_anon_WITH_DES_CBC_SHA            ADH-DES-CBC-SHA
 428  TLS_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA
 429
 430 =head2 AES ciphersuites from RFC3268, extending TLS v1.0
 431
 432  TLS_RSA_WITH_AES_128_CBC_SHA            AES128-SHA
 433  TLS_RSA_WITH_AES_256_CBC_SHA            AES256-SHA
 434
 435  TLS_DH_DSS_WITH_AES_128_CBC_SHA         DH-DSS-AES128-SHA
 436  TLS_DH_DSS_WITH_AES_256_CBC_SHA         DH-DSS-AES256-SHA
 437  TLS_DH_RSA_WITH_AES_128_CBC_SHA         DH-RSA-AES128-SHA
 438  TLS_DH_RSA_WITH_AES_256_CBC_SHA         DH-RSA-AES256-SHA
 439
 440  TLS_DHE_DSS_WITH_AES_128_CBC_SHA        DHE-DSS-AES128-SHA
 441  TLS_DHE_DSS_WITH_AES_256_CBC_SHA        DHE-DSS-AES256-SHA
 442  TLS_DHE_RSA_WITH_AES_128_CBC_SHA        DHE-RSA-AES128-SHA
 443  TLS_DHE_RSA_WITH_AES_256_CBC_SHA        DHE-RSA-AES256-SHA
 444
 445  TLS_DH_anon_WITH_AES_128_CBC_SHA        ADH-AES128-SHA
 446  TLS_DH_anon_WITH_AES_256_CBC_SHA        ADH-AES256-SHA
 447
 448 =head2 Camellia ciphersuites from RFC4132, extending TLS v1.0
 449
 450  TLS_RSA_WITH_CAMELLIA_128_CBC_SHA      CAMELLIA128-SHA
 451  TLS_RSA_WITH_CAMELLIA_256_CBC_SHA      CAMELLIA256-SHA
 452
 453  TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA   DH-DSS-CAMELLIA128-SHA
 454  TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA   DH-DSS-CAMELLIA256-SHA
 455  TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA   DH-RSA-CAMELLIA128-SHA
 456  TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA   DH-RSA-CAMELLIA256-SHA
 457
 458  TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA  DHE-DSS-CAMELLIA128-SHA
 459  TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA  DHE-DSS-CAMELLIA256-SHA
 460  TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA  DHE-RSA-CAMELLIA128-SHA
 461  TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA  DHE-RSA-CAMELLIA256-SHA
 462
 463  TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA  ADH-CAMELLIA128-SHA
 464  TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA  ADH-CAMELLIA256-SHA
 465
 466 =head2 SEED ciphersuites from RFC4162, extending TLS v1.0
 467
 468  TLS_RSA_WITH_SEED_CBC_SHA              SEED-SHA
 469
 470  TLS_DH_DSS_WITH_SEED_CBC_SHA           DH-DSS-SEED-SHA
 471  TLS_DH_RSA_WITH_SEED_CBC_SHA           DH-RSA-SEED-SHA
 472
 473  TLS_DHE_DSS_WITH_SEED_CBC_SHA          DHE-DSS-SEED-SHA
 474  TLS_DHE_RSA_WITH_SEED_CBC_SHA          DHE-RSA-SEED-SHA
 475
 476  TLS_DH_anon_WITH_SEED_CBC_SHA          ADH-SEED-SHA
 477
 478 =head2 GOST ciphersuites from draft-chudov-cryptopro-cptls, extending TLS v1.0
 479
 480 Note: these ciphers require an engine which including GOST cryptographic
 481 algorithms, such as the B<ccgost> engine, included in the OpenSSL distribution.
 482
 483  TLS_GOSTR341094_WITH_28147_CNT_IMIT GOST94-GOST89-GOST89
 484  TLS_GOSTR341001_WITH_28147_CNT_IMIT GOST2001-GOST89-GOST89
 485  TLS_GOSTR341094_WITH_NULL_GOSTR3411 GOST94-NULL-GOST94
 486  TLS_GOSTR341001_WITH_NULL_GOSTR3411 GOST2001-NULL-GOST94
 487
 488 =head2 Additional Export 1024 and other cipher suites
 489
 490 Note: these ciphers can also be used in SSL v3.
 491
 492  TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA     EXP1024-DES-CBC-SHA
 493  TLS_RSA_EXPORT1024_WITH_RC4_56_SHA      EXP1024-RC4-SHA
 494  TLS_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA EXP1024-DHE-DSS-DES-CBC-SHA
 495  TLS_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA  EXP1024-DHE-DSS-RC4-SHA
 496  TLS_DHE_DSS_WITH_RC4_128_SHA            DHE-DSS-RC4-SHA
 497
 498 =head2 Elliptic curve cipher suites.
 499
 500  TLS_ECDH_RSA_WITH_NULL_SHA              ECDH-RSA-NULL-SHA
 501  TLS_ECDH_RSA_WITH_RC4_128_SHA           ECDH-RSA-RC4-SHA
 502  TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA      ECDH-RSA-DES-CBC3-SHA
 503  TLS_ECDH_RSA_WITH_AES_128_CBC_SHA       ECDH-RSA-AES128-SHA
 504  TLS_ECDH_RSA_WITH_AES_256_CBC_SHA       ECDH-RSA-AES256-SHA
 505
 506  TLS_ECDH_ECDSA_WITH_NULL_SHA            ECDH-ECDSA-NULL-SHA
 507  TLS_ECDH_ECDSA_WITH_RC4_128_SHA         ECDH-ECDSA-RC4-SHA
 508  TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA    ECDH-ECDSA-DES-CBC3-SHA
 509  TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA     ECDH-ECDSA-AES128-SHA
 510  TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA     ECDH-ECDSA-AES256-SHA
 511
 512  TLS_ECDHE_RSA_WITH_NULL_SHA             ECDHE-RSA-NULL-SHA
 513  TLS_ECDHE_RSA_WITH_RC4_128_SHA          ECDHE-RSA-RC4-SHA
 514  TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA     ECDHE-RSA-DES-CBC3-SHA
 515  TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA      ECDHE-RSA-AES128-SHA
 516  TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA      ECDHE-RSA-AES256-SHA
 517
 518  TLS_ECDHE_ECDSA_WITH_NULL_SHA           ECDHE-ECDSA-NULL-SHA
 519  TLS_ECDHE_ECDSA_WITH_RC4_128_SHA        ECDHE-ECDSA-RC4-SHA
 520  TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA   ECDHE-ECDSA-DES-CBC3-SHA
 521  TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA    ECDHE-ECDSA-AES128-SHA
 522  TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA    ECDHE-ECDSA-AES256-SHA
 523
 524  TLS_ECDH_anon_WITH_NULL_SHA             AECDH-NULL-SHA
 525  TLS_ECDH_anon_WITH_RC4_128_SHA          AECDH-RC4-SHA
 526  TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA     AECDH-DES-CBC3-SHA
 527  TLS_ECDH_anon_WITH_AES_128_CBC_SHA      AECDH-AES128-SHA
 528  TLS_ECDH_anon_WITH_AES_256_CBC_SHA      AECDH-AES256-SHA
 529
 530 =head2 TLS v1.2 cipher suites
 531
 532  TLS_RSA_WITH_NULL_SHA256                  NULL-SHA256
 533
 534  TLS_RSA_WITH_AES_128_CBC_SHA256           AES128-SHA256
 535  TLS_RSA_WITH_AES_256_CBC_SHA256           AES256-SHA256
 536  TLS_RSA_WITH_AES_128_GCM_SHA256           AES128-GCM-SHA256
 537  TLS_RSA_WITH_AES_256_GCM_SHA384           AES256-GCM-SHA384
 538
 539  TLS_DH_RSA_WITH_AES_128_CBC_SHA256        DH-RSA-AES128-SHA256
 540  TLS_DH_RSA_WITH_AES_256_CBC_SHA256        DH-RSA-AES256-SHA256
 541  TLS_DH_RSA_WITH_AES_128_GCM_SHA256        DH-RSA-AES128-GCM-SHA256
 542  TLS_DH_RSA_WITH_AES_256_GCM_SHA384        DH-RSA-AES256-GCM-SHA384
 543
 544  TLS_DH_DSS_WITH_AES_128_CBC_SHA256        DH-DSS-AES128-SHA256
 545  TLS_DH_DSS_WITH_AES_256_CBC_SHA256        DH-DSS-AES256-SHA256
 546  TLS_DH_DSS_WITH_AES_128_GCM_SHA256        DH-DSS-AES128-GCM-SHA256
 547  TLS_DH_DSS_WITH_AES_256_GCM_SHA384        DH-DSS-AES256-GCM-SHA384
 548
 549  TLS_DHE_RSA_WITH_AES_128_CBC_SHA256       DHE-RSA-AES128-SHA256
 550  TLS_DHE_RSA_WITH_AES_256_CBC_SHA256       DHE-RSA-AES256-SHA256
 551  TLS_DHE_RSA_WITH_AES_128_GCM_SHA256       DHE-RSA-AES128-GCM-SHA256
 552  TLS_DHE_RSA_WITH_AES_256_GCM_SHA384       DHE-RSA-AES256-GCM-SHA384
 553
 554  TLS_DHE_DSS_WITH_AES_128_CBC_SHA256       DHE-DSS-AES128-SHA256
 555  TLS_DHE_DSS_WITH_AES_256_CBC_SHA256       DHE-DSS-AES256-SHA256
 556  TLS_DHE_DSS_WITH_AES_128_GCM_SHA256       DHE-DSS-AES128-GCM-SHA256
 557  TLS_DHE_DSS_WITH_AES_256_GCM_SHA384       DHE-DSS-AES256-GCM-SHA384
 558
 559  TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256      ECDH-RSA-AES128-SHA256
 560  TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384      ECDH-RSA-AES256-SHA384
 561  TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256      ECDH-RSA-AES128-GCM-SHA256
 562  TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384      ECDH-RSA-AES256-GCM-SHA384
 563
 564  TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256    ECDH-ECDSA-AES128-SHA256
 565  TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384    ECDH-ECDSA-AES256-SHA384
 566  TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256    ECDH-ECDSA-AES128-GCM-SHA256
 567  TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384    ECDH-ECDSA-AES256-GCM-SHA384
 568
 569  TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256     ECDHE-RSA-AES128-SHA256
 570  TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384     ECDHE-RSA-AES256-SHA384
 571  TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256     ECDHE-RSA-AES128-GCM-SHA256
 572  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384     ECDHE-RSA-AES256-GCM-SHA384
 573
 574  TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256   ECDHE-ECDSA-AES128-SHA256
 575  TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384   ECDHE-ECDSA-AES256-SHA384
 576  TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDHE-ECDSA-AES128-GCM-SHA256
 577  TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384   ECDHE-ECDSA-AES256-GCM-SHA384
 578
 579  TLS_DH_anon_WITH_AES_128_CBC_SHA256       ADH-AES128-SHA256
 580  TLS_DH_anon_WITH_AES_256_CBC_SHA256       ADH-AES256-SHA256
 581  TLS_DH_anon_WITH_AES_128_GCM_SHA256       ADH-AES128-GCM-SHA256
 582  TLS_DH_anon_WITH_AES_256_GCM_SHA384       ADH-AES256-GCM-SHA384
 583
 584 =head2 Camellia HMAC-Based ciphersuites from RFC6367, extending TLS v1.2
 585
 586  TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 ECDHE-ECDSA-CAMELLIA128-SHA256
 587  TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 ECDHE-ECDSA-CAMELLIA256-SHA384
 588  TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256  ECDH-ECDSA-CAMELLIA128-SHA256
 589  TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384  ECDH-ECDSA-CAMELLIA256-SHA384
 590  TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256   ECDHE-RSA-CAMELLIA128-SHA256
 591  TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384   ECDHE-RSA-CAMELLIA256-SHA384
 592  TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256    ECDH-RSA-CAMELLIA128-SHA256
 593  TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384    ECDH-RSA-CAMELLIA256-SHA384
 594
 595 =head2 Pre shared keying (PSK) ciphersuites
 596
 597  PSK_WITH_NULL_SHA                         PSK-NULL-SHA
 598  DHE_PSK_WITH_NULL_SHA                     DHE-PSK-NULL-SHA
 599  RSA_PSK_WITH_NULL_SHA                     RSA-PSK-NULL-SHA
 600
 601  PSK_WITH_RC4_128_SHA                      PSK-RC4-SHA
 602  PSK_WITH_3DES_EDE_CBC_SHA                 PSK-3DES-EDE-CBC-SHA
 603  PSK_WITH_AES_128_CBC_SHA                  PSK-AES128-CBC-SHA
 604  PSK_WITH_AES_256_CBC_SHA                  PSK-AES256-CBC-SHA
 605
 606  DHE_PSK_WITH_RC4_128_SHA                  DHE-PSK-RC4-SHA
 607  DHE_PSK_WITH_3DES_EDE_CBC_SHA             DHE-PSK-3DES-EDE-CBC-SHA
 608  DHE_PSK_WITH_AES_128_CBC_SHA              DHE-PSK-AES128-CBC-SHA
 609  DHE_PSK_WITH_AES_256_CBC_SHA              DHE-PSK-AES256-CBC-SHA
 610
 611  RSA_PSK_WITH_RC4_128_SHA                  RSA-PSK-RC4-SHA
 612  RSA_PSK_WITH_3DES_EDE_CBC_SHA             RSA-PSK-3DES-EDE-CBC-SHA
 613  RSA_PSK_WITH_AES_128_CBC_SHA              RSA-PSK-AES128-CBC-SHA
 614  RSA_PSK_WITH_AES_256_CBC_SHA              RSA-PSK-AES256-CBC-SHA
 615
 616  PSK_WITH_AES_128_GCM_SHA256               PSK-AES128-GCM-SHA256
 617  PSK_WITH_AES_256_GCM_SHA384               PSK-AES256-GCM-SHA384
 618  DHE_PSK_WITH_AES_128_GCM_SHA256           DHE-PSK-AES128-GCM-SHA256
 619  DHE_PSK_WITH_AES_256_GCM_SHA384           DHE-PSK-AES256-GCM-SHA384
 620  RSA_PSK_WITH_AES_128_GCM_SHA256           RSA-PSK-AES128-GCM-SHA256
 621  RSA_PSK_WITH_AES_256_GCM_SHA384           RSA-PSK-AES256-GCM-SHA384
 622
 623  PSK_WITH_AES_128_CBC_SHA256               PSK-AES128-CBC-SHA256
 624  PSK_WITH_AES_256_CBC_SHA384               PSK-AES256-CBC-SHA384
 625  PSK_WITH_NULL_SHA256                      PSK-NULL-SHA256
 626  PSK_WITH_NULL_SHA384                      PSK-NULL-SHA384
 627  DHE_PSK_WITH_AES_128_CBC_SHA256           DHE-PSK-AES128-CBC-SHA256
 628  DHE_PSK_WITH_AES_256_CBC_SHA384           DHE-PSK-AES256-CBC-SHA384
 629  DHE_PSK_WITH_NULL_SHA256                  DHE-PSK-NULL-SHA256
 630  DHE_PSK_WITH_NULL_SHA384                  DHE-PSK-NULL-SHA384
 631  RSA_PSK_WITH_AES_128_CBC_SHA256           RSA-PSK-AES128-CBC-SHA256
 632  RSA_PSK_WITH_AES_256_CBC_SHA384           RSA-PSK-AES256-CBC-SHA384
 633  RSA_PSK_WITH_NULL_SHA256                  RSA-PSK-NULL-SHA256
 634  RSA_PSK_WITH_NULL_SHA384                  RSA-PSK-NULL-SHA384
 635  PSK_WITH_AES_128_GCM_SHA256               PSK-AES128-GCM-SHA256
 636  PSK_WITH_AES_256_GCM_SHA384               PSK-AES256-GCM-SHA384
 637
 638  ECDHE_PSK_WITH_RC4_128_SHA                ECDHE-PSK-RC4-SHA
 639  ECDHE_PSK_WITH_3DES_EDE_CBC_SHA           ECDHE-PSK-3DES-EDE-CBC-SHA
 640  ECDHE_PSK_WITH_AES_128_CBC_SHA            ECDHE-PSK-AES128-CBC-SHA
 641  ECDHE_PSK_WITH_AES_256_CBC_SHA            ECDHE-PSK-AES256-CBC-SHA
 642  ECDHE_PSK_WITH_AES_128_CBC_SHA256         ECDHE-PSK-AES128-CBC-SHA256
 643  ECDHE_PSK_WITH_AES_256_CBC_SHA384         ECDHE-PSK-AES256-CBC-SHA384
 644  ECDHE_PSK_WITH_NULL_SHA                   ECDHE-PSK-NULL-SHA
 645  ECDHE_PSK_WITH_NULL_SHA256                ECDHE-PSK-NULL-SHA256
 646  ECDHE_PSK_WITH_NULL_SHA384                ECDHE-PSK-NULL-SHA384
 647
 648  PSK_WITH_CAMELLIA_128_CBC_SHA256          PSK-CAMELLIA128-SHA256
 649  PSK_WITH_CAMELLIA_256_CBC_SHA384          PSK-CAMELLIA256-SHA384
 650
 651  DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256      DHE-PSK-CAMELLIA128-SHA256
 652  DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384      DHE-PSK-CAMELLIA256-SHA384
 653
 654  RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256      RSA-PSK-CAMELLIA128-SHA256
 655  RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384      RSA-PSK-CAMELLIA256-SHA384
 656
 657  ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256    ECDHE-PSK-CAMELLIA128-SHA256
 658  ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384    ECDHE-PSK-CAMELLIA256-SHA384
 659
 660 =head1 NOTES
 661
 662 Some compiled versions of OpenSSL may not include all the ciphers
 663 listed here because some ciphers were excluded at compile time.
 664
 665 =head1 EXAMPLES
 666
 667 Verbose listing of all OpenSSL ciphers including NULL ciphers:
 668
 669  openssl ciphers -v 'ALL:eNULL'
 670
 671 Include all ciphers except NULL and anonymous DH then sort by
 672 strength:
 673
 674  openssl ciphers -v 'ALL:!ADH:@STRENGTH'
 675
 676 Include all ciphers except ones with no encryption (eNULL) or no
 677 authentication (aNULL):
 678
 679  openssl ciphers -v 'ALL:!aNULL'
 680
 681 Include only 3DES ciphers and then place RSA ciphers last:
 682
 683  openssl ciphers -v '3DES:+RSA'
 684
 685 Include all RC4 ciphers but leave out those without authentication:
 686
 687  openssl ciphers -v 'RC4:!COMPLEMENTOFDEFAULT'
 688
 689 Include all ciphers with RSA authentication but leave out ciphers without
 690 encryption.
 691
 692  openssl ciphers -v 'RSA:!COMPLEMENTOFALL'
 693
 694 Set security level to 2 and display all ciphers consistent with level 2:
 695
 696  openssl ciphers -s -v 'ALL:@SECLEVEL=2'
 697
 698 =head1 SEE ALSO
 699
 700 L<s_client(1)|s_client(1)>, L<s_server(1)|s_server(1)>, L<ssl(3)|ssl(3)>
 701
 702 =head1 HISTORY
 703
 704 The B<COMPLENTOFALL> and B<COMPLEMENTOFDEFAULT> selection options
 705 for cipherlist strings were added in OpenSSL 0.9.7.
 706 The B<-V> option for the B<ciphers> command was added in OpenSSL 1.0.0.
 707
 708 =cut