e3fa4c04b0abd28b54b1090b6fcbc6796468287e
[openssl.git] / 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<-help>]
11 [B<-s>]
12 [B<-v>]
13 [B<-V>]
14 [B<-ssl3>]
15 [B<-tls1>]
16 [B<-tls1_1>]
17 [B<-tls1_2>]
18 [B<-s>]
19 [B<-psk>]
20 [B<-stdname>]
21 [B<cipherlist>]
22
23 =head1 DESCRIPTION
24
25 The B<ciphers> command converts textual OpenSSL cipher lists into ordered
26 SSL cipher preference lists. It can be used as a test tool to determine
27 the appropriate cipherlist.
28
29 =head1 COMMAND OPTIONS
30
31 =over 4
32
33 =item B<-help>
34
35 Print out a usage message.
36
37 =item B<-s>
38
39 Only list supported ciphers: those consistent with the security level. This
40 is the actual cipher list an application will support. If this option is
41 not used then ciphers excluded by the security level will still be listed.
42
43 =item B<-psk>
44
45 When combined with B<-s> includes cipher suites which require PSK.
46
47 =item B<-v>
48
49 Verbose output: For each ciphersuite, list details as provided by
50 L<SSL_CIPHER_description(3)>.
51
52 =item B<-V>
53
54 Like B<-v>, but include the official cipher suite values in hex.
55
56 =item B<-ssl3>
57
58 List the ciphers which would be used if SSL v3 was negotiated.
59
60 =item B<-tls1>
61
62 List the ciphers which would be used if TLS v1.0 was negotiated.
63
64 =item B<-tls1_1>
65
66 List the ciphers which would be used if TLS v1.1 was negotiated.
67
68 =item B<-tls1_2>
69
70 List the ciphers which would be used if TLS v1.2 was negotiated.
71
72 =item B<-stdname>
73
74 precede each ciphersuite by its standard name: only available is OpenSSL
75 is built with tracing enabled (B<enable-ssl-trace> argument to Configure).
76
77 =item B<cipherlist>
78
79 a cipher list to convert to a cipher preference list. If it is not included
80 then the default cipher list will be used. The format is described below.
81
82 =back
83
84 =head1 CIPHER LIST FORMAT
85
86 The cipher list consists of one or more I<cipher strings> separated by colons.
87 Commas or spaces are also acceptable separators but colons are normally used.
88
89 The actual cipher string can take several different forms.
90
91 It can consist of a single cipher suite such as B<RC4-SHA>.
92
93 It can represent a list of cipher suites containing a certain algorithm, or
94 cipher suites of a certain type. For example B<SHA1> represents all ciphers
95 suites using the digest algorithm SHA1 and B<SSLv3> represents all SSL v3
96 algorithms.
97
98 Lists of cipher suites can be combined in a single cipher string using the
99 B<+> character. This is used as a logical B<and> operation. For example
100 B<SHA1+DES> represents all cipher suites containing the SHA1 B<and> the DES
101 algorithms.
102
103 Each cipher string can be optionally preceded by the characters B<!>,
104 B<-> or B<+>.
105
106 If B<!> is used then the ciphers are permanently deleted from the list.
107 The ciphers deleted can never reappear in the list even if they are
108 explicitly stated.
109
110 If B<-> is used then the ciphers are deleted from the list, but some or
111 all of the ciphers can be added again by later options.
112
113 If B<+> is used then the ciphers are moved to the end of the list. This
114 option doesn't add any new ciphers it just moves matching existing ones.
115
116 If none of these characters is present then the string is just interpreted
117 as a list of ciphers to be appended to the current preference list. If the
118 list includes any ciphers already present they will be ignored: that is they
119 will not moved to the end of the list.
120
121 The cipher string B<@STRENGTH> can be used at any point to sort the current
122 cipher list in order of encryption algorithm key length.
123
124 The cipher string B<@SECLEVEL=n> can be used at any point to set the security
125 level to B<n>.
126
127 =head1 CIPHER STRINGS
128
129 The following is a list of all permitted cipher strings and their meanings.
130
131 =over 4
132
133 =item B<DEFAULT>
134
135 the default cipher list. This is determined at compile time and
136 is B<ALL:!COMPLEMENTOFDEFAULT:!eNULL>. This must be the first cipher
137 string specified.
138
139 =item B<COMPLEMENTOFDEFAULT>
140
141 the ciphers included in B<ALL>, but not enabled by default. Currently
142 this includes all RC4, DES, RC2 and anonymous ciphers. Note that this rule does
143 not cover B<eNULL>, which is not included by B<ALL> (use B<COMPLEMENTOFALL> if
144 necessary).
145
146 =item B<ALL>
147
148 all cipher suites except the B<eNULL> ciphers which must be explicitly enabled;
149 as of OpenSSL, the B<ALL> cipher suites are reasonably ordered by default
150
151 =item B<COMPLEMENTOFALL>
152
153 the cipher suites not enabled by B<ALL>, currently being B<eNULL>.
154
155 =item B<HIGH>
156
157 "high" encryption cipher suites. This currently means those with key lengths
158 larger than 128 bits, and some cipher suites with 128-bit keys.
159
160 =item B<MEDIUM>
161
162 "medium" encryption cipher suites, currently some of those using 128 bit
163 encryption.
164
165 =item B<LOW>
166
167 "low" encryption cipher suites, currently those using 64 or 56 bit
168 encryption algorithms but excluding export cipher suites.  All these
169 ciphersuites have been removed as of OpenSSL 1.1.0.
170
171 =item B<eNULL>, B<NULL>
172
173 the "NULL" ciphers that is those offering no encryption. Because these offer no
174 encryption at all and are a security risk they are disabled unless explicitly
175 included.
176
177 =item B<aNULL>
178
179 the cipher suites offering no authentication. This is currently the anonymous
180 DH algorithms and anonymous ECDH algorithms. These cipher suites are vulnerable
181 to a "man in the middle" attack and so their use is normally discouraged.
182
183 =item B<kRSA>, B<aRSA>, B<RSA>
184
185 cipher suites using RSA key exchange, authentication or either respectively.
186
187 =item B<kDHr>, B<kDHd>, B<kDH>
188
189 cipher suites using DH key agreement and DH certificates signed by CAs with RSA
190 and DSS keys or either respectively.
191
192 =item B<kDHE>, B<kEDH>
193
194 cipher suites using ephemeral DH key agreement, including anonymous cipher
195 suites.
196
197 =item B<DHE>, B<EDH>
198
199 cipher suites using authenticated ephemeral DH key agreement.
200
201 =item B<ADH>
202
203 anonymous DH cipher suites, note that this does not include anonymous Elliptic
204 Curve DH (ECDH) cipher suites.
205
206 =item B<DH>
207
208 cipher suites using DH, including anonymous DH, ephemeral DH and fixed DH.
209
210 =item B<kECDHr>, B<kECDHe>, B<kECDH>
211
212 cipher suites using fixed ECDH key agreement signed by CAs with RSA and ECDSA
213 keys or either respectively.
214
215 =item B<kEECDH>, B<kECDHE>
216
217 cipher suites using ephemeral ECDH key agreement, including anonymous
218 cipher suites.
219
220 =item B<ECDHE>, B<EECDH>
221
222 cipher suites using authenticated ephemeral ECDH key agreement.
223
224 =item B<AECDH>
225
226 anonymous Elliptic Curve Diffie Hellman cipher suites.
227
228 =item B<ECDH>
229
230 cipher suites using ECDH key exchange, including anonymous, ephemeral and
231 fixed ECDH.
232
233 =item B<aDSS>, B<DSS>
234
235 cipher suites using DSS authentication, i.e. the certificates carry DSS keys.
236
237 =item B<aDH>
238
239 cipher suites effectively using DH authentication, i.e. the certificates carry
240 DH keys.
241
242 =item B<aECDH>
243
244 cipher suites effectively using ECDH authentication, i.e. the certificates
245 carry ECDH keys.
246
247 =item B<aECDSA>, B<ECDSA>
248
249 cipher suites using ECDSA authentication, i.e. the certificates carry ECDSA
250 keys.
251
252 =item B<TLSv1.2>, B<TLSv1.0>, B<SSLv3>
253
254 Lists ciphersuites which are only supported in at least TLS v1.2, TLS v1.0
255 or SSL v3.0 respectively. Note: there are no ciphersuites specific to TLS v1.1.
256 Since this is only the minimum version if, for example, TLS v1.0 is supported
257 then both TLS v1.0 and SSL v3.0 ciphersuites are included.
258
259 Note: these cipher strings B<do not> change the negotiated version of SSL or
260 TLS only the list of cipher suites.
261
262 =item B<AES128>, B<AES256>, B<AES>
263
264 cipher suites using 128 bit AES, 256 bit AES or either 128 or 256 bit AES.
265
266 =item B<AESGCM>
267
268 AES in Galois Counter Mode (GCM): these ciphersuites are only supported
269 in TLS v1.2.
270
271 =item B<AESCCM>, B<AESCCM8>
272
273 AES in Cipher Block Chaining - Message Authentication Mode (CCM): these
274 ciphersuites are only supported in TLS v1.2. B<AESCCM> references CCM
275 cipher suites using both 16 and 8 octet Integrity Check Value (ICV)
276 while B<AESCCM8> only references 8 octet ICV.
277
278 =item B<CAMELLIA128>, B<CAMELLIA256>, B<CAMELLIA>
279
280 cipher suites using 128 bit CAMELLIA, 256 bit CAMELLIA or either 128 or 256 bit
281 CAMELLIA.
282
283 =item B<CHACHA20>
284
285 cipher suites using ChaCha20.
286
287 =item B<3DES>
288
289 cipher suites using triple DES.
290
291 =item B<DES>
292
293 cipher suites using DES (not triple DES).
294
295 =item B<RC4>
296
297 cipher suites using RC4.
298
299 =item B<RC2>
300
301 cipher suites using RC2.
302
303 =item B<IDEA>
304
305 cipher suites using IDEA.
306
307 =item B<SEED>
308
309 cipher suites using SEED.
310
311 =item B<MD5>
312
313 cipher suites using MD5.
314
315 =item B<SHA1>, B<SHA>
316
317 cipher suites using SHA1.
318
319 =item B<SHA256>, B<SHA384>
320
321 ciphersuites using SHA256 or SHA384.
322
323 =item B<aGOST> 
324
325 cipher suites using GOST R 34.10 (either 2001 or 94) for authentication
326 (needs an engine supporting GOST algorithms). 
327
328 =item B<aGOST01>
329
330 cipher suites using GOST R 34.10-2001 authentication.
331
332 =item B<kGOST>
333
334 cipher suites, using VKO 34.10 key exchange, specified in the RFC 4357.
335
336 =item B<GOST94>
337
338 cipher suites, using HMAC based on GOST R 34.11-94.
339
340 =item B<GOST89MAC>
341
342 cipher suites using GOST 28147-89 MAC B<instead of> HMAC.
343
344 =item B<PSK>
345
346 all cipher suites using pre-shared keys (PSK).
347
348 =item B<kPSK>, B<kECDHEPSK>, B<kDHEPSK>, B<kRSAPSK>
349
350 cipher suites using PSK key exchange, ECDHE_PSK, DHE_PSK or RSA_PSK.
351
352 =item B<aPSK>
353
354 cipher suites using PSK authentication (currently all PSK modes apart from
355 RSA_PSK).
356
357 =item B<SUITEB128>, B<SUITEB128ONLY>, B<SUITEB192>
358
359 enables suite B mode operation using 128 (permitting 192 bit mode by peer)
360 128 bit (not permitting 192 bit by peer) or 192 bit level of security
361 respectively. If used these cipherstrings should appear first in the cipher
362 list and anything after them is ignored. Setting Suite B mode has additional
363 consequences required to comply with RFC6460. In particular the supported
364 signature algorithms is reduced to support only ECDSA and SHA256 or SHA384,
365 only the elliptic curves P-256 and P-384 can be used and only the two suite B
366 compliant ciphersuites (ECDHE-ECDSA-AES128-GCM-SHA256 and
367 ECDHE-ECDSA-AES256-GCM-SHA384) are permissible.
368
369 =back
370
371 =head1 CIPHER SUITE NAMES
372
373 The following lists give the SSL or TLS cipher suites names from the
374 relevant specification and their OpenSSL equivalents. It should be noted,
375 that several cipher suite names do not include the authentication used,
376 e.g. DES-CBC3-SHA. In these cases, RSA authentication is used.
377
378 =head2 SSL v3.0 cipher suites.
379
380  SSL_RSA_WITH_NULL_MD5                   NULL-MD5
381  SSL_RSA_WITH_NULL_SHA                   NULL-SHA
382  SSL_RSA_WITH_RC4_128_MD5                RC4-MD5
383  SSL_RSA_WITH_RC4_128_SHA                RC4-SHA
384  SSL_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
385  SSL_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA
386
387  SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA        DH-DSS-DES-CBC3-SHA
388  SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA        DH-RSA-DES-CBC3-SHA
389  SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA       DHE-DSS-DES-CBC3-SHA
390  SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA       DHE-RSA-DES-CBC3-SHA
391
392  SSL_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
393  SSL_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA
394
395  SSL_FORTEZZA_KEA_WITH_NULL_SHA          Not implemented.
396  SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA  Not implemented.
397  SSL_FORTEZZA_KEA_WITH_RC4_128_SHA       Not implemented.
398
399 =head2 TLS v1.0 cipher suites.
400
401  TLS_RSA_WITH_NULL_MD5                   NULL-MD5
402  TLS_RSA_WITH_NULL_SHA                   NULL-SHA
403  TLS_RSA_WITH_RC4_128_MD5                RC4-MD5
404  TLS_RSA_WITH_RC4_128_SHA                RC4-SHA
405  TLS_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
406  TLS_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA
407
408  TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA        Not implemented.
409  TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA        Not implemented.
410  TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA       DHE-DSS-DES-CBC3-SHA
411  TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA       DHE-RSA-DES-CBC3-SHA
412
413  TLS_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
414  TLS_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA
415
416 =head2 AES ciphersuites from RFC3268, extending TLS v1.0
417
418  TLS_RSA_WITH_AES_128_CBC_SHA            AES128-SHA
419  TLS_RSA_WITH_AES_256_CBC_SHA            AES256-SHA
420
421  TLS_DH_DSS_WITH_AES_128_CBC_SHA         DH-DSS-AES128-SHA
422  TLS_DH_DSS_WITH_AES_256_CBC_SHA         DH-DSS-AES256-SHA
423  TLS_DH_RSA_WITH_AES_128_CBC_SHA         DH-RSA-AES128-SHA
424  TLS_DH_RSA_WITH_AES_256_CBC_SHA         DH-RSA-AES256-SHA
425
426  TLS_DHE_DSS_WITH_AES_128_CBC_SHA        DHE-DSS-AES128-SHA
427  TLS_DHE_DSS_WITH_AES_256_CBC_SHA        DHE-DSS-AES256-SHA
428  TLS_DHE_RSA_WITH_AES_128_CBC_SHA        DHE-RSA-AES128-SHA
429  TLS_DHE_RSA_WITH_AES_256_CBC_SHA        DHE-RSA-AES256-SHA
430
431  TLS_DH_anon_WITH_AES_128_CBC_SHA        ADH-AES128-SHA
432  TLS_DH_anon_WITH_AES_256_CBC_SHA        ADH-AES256-SHA
433
434 =head2 Camellia ciphersuites from RFC4132, extending TLS v1.0
435
436  TLS_RSA_WITH_CAMELLIA_128_CBC_SHA      CAMELLIA128-SHA
437  TLS_RSA_WITH_CAMELLIA_256_CBC_SHA      CAMELLIA256-SHA
438
439  TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA   DH-DSS-CAMELLIA128-SHA
440  TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA   DH-DSS-CAMELLIA256-SHA
441  TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA   DH-RSA-CAMELLIA128-SHA
442  TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA   DH-RSA-CAMELLIA256-SHA
443
444  TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA  DHE-DSS-CAMELLIA128-SHA
445  TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA  DHE-DSS-CAMELLIA256-SHA
446  TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA  DHE-RSA-CAMELLIA128-SHA
447  TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA  DHE-RSA-CAMELLIA256-SHA
448
449  TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA  ADH-CAMELLIA128-SHA
450  TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA  ADH-CAMELLIA256-SHA
451
452 =head2 SEED ciphersuites from RFC4162, extending TLS v1.0
453
454  TLS_RSA_WITH_SEED_CBC_SHA              SEED-SHA
455
456  TLS_DH_DSS_WITH_SEED_CBC_SHA           DH-DSS-SEED-SHA
457  TLS_DH_RSA_WITH_SEED_CBC_SHA           DH-RSA-SEED-SHA
458
459  TLS_DHE_DSS_WITH_SEED_CBC_SHA          DHE-DSS-SEED-SHA
460  TLS_DHE_RSA_WITH_SEED_CBC_SHA          DHE-RSA-SEED-SHA
461
462  TLS_DH_anon_WITH_SEED_CBC_SHA          ADH-SEED-SHA
463
464 =head2 GOST ciphersuites from draft-chudov-cryptopro-cptls, extending TLS v1.0
465
466 Note: these ciphers require an engine which including GOST cryptographic
467 algorithms, such as the B<ccgost> engine, included in the OpenSSL distribution.
468
469  TLS_GOSTR341094_WITH_28147_CNT_IMIT GOST94-GOST89-GOST89
470  TLS_GOSTR341001_WITH_28147_CNT_IMIT GOST2001-GOST89-GOST89
471  TLS_GOSTR341094_WITH_NULL_GOSTR3411 GOST94-NULL-GOST94
472  TLS_GOSTR341001_WITH_NULL_GOSTR3411 GOST2001-NULL-GOST94
473
474 =head2 Additional Export 1024 and other cipher suites
475
476 Note: these ciphers can also be used in SSL v3.
477
478  TLS_DHE_DSS_WITH_RC4_128_SHA            DHE-DSS-RC4-SHA
479
480 =head2 Elliptic curve cipher suites.
481
482  TLS_ECDH_RSA_WITH_NULL_SHA              ECDH-RSA-NULL-SHA
483  TLS_ECDH_RSA_WITH_RC4_128_SHA           ECDH-RSA-RC4-SHA
484  TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA      ECDH-RSA-DES-CBC3-SHA
485  TLS_ECDH_RSA_WITH_AES_128_CBC_SHA       ECDH-RSA-AES128-SHA
486  TLS_ECDH_RSA_WITH_AES_256_CBC_SHA       ECDH-RSA-AES256-SHA
487  
488  TLS_ECDH_ECDSA_WITH_NULL_SHA            ECDH-ECDSA-NULL-SHA
489  TLS_ECDH_ECDSA_WITH_RC4_128_SHA         ECDH-ECDSA-RC4-SHA
490  TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA    ECDH-ECDSA-DES-CBC3-SHA
491  TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA     ECDH-ECDSA-AES128-SHA
492  TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA     ECDH-ECDSA-AES256-SHA
493  
494  TLS_ECDHE_RSA_WITH_NULL_SHA             ECDHE-RSA-NULL-SHA
495  TLS_ECDHE_RSA_WITH_RC4_128_SHA          ECDHE-RSA-RC4-SHA
496  TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA     ECDHE-RSA-DES-CBC3-SHA
497  TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA      ECDHE-RSA-AES128-SHA
498  TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA      ECDHE-RSA-AES256-SHA
499  
500  TLS_ECDHE_ECDSA_WITH_NULL_SHA           ECDHE-ECDSA-NULL-SHA
501  TLS_ECDHE_ECDSA_WITH_RC4_128_SHA        ECDHE-ECDSA-RC4-SHA
502  TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA   ECDHE-ECDSA-DES-CBC3-SHA
503  TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA    ECDHE-ECDSA-AES128-SHA
504  TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA    ECDHE-ECDSA-AES256-SHA
505  
506  TLS_ECDH_anon_WITH_NULL_SHA             AECDH-NULL-SHA
507  TLS_ECDH_anon_WITH_RC4_128_SHA          AECDH-RC4-SHA
508  TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA     AECDH-DES-CBC3-SHA
509  TLS_ECDH_anon_WITH_AES_128_CBC_SHA      AECDH-AES128-SHA
510  TLS_ECDH_anon_WITH_AES_256_CBC_SHA      AECDH-AES256-SHA
511
512 =head2 TLS v1.2 cipher suites
513
514  TLS_RSA_WITH_NULL_SHA256                  NULL-SHA256
515
516  TLS_RSA_WITH_AES_128_CBC_SHA256           AES128-SHA256
517  TLS_RSA_WITH_AES_256_CBC_SHA256           AES256-SHA256
518  TLS_RSA_WITH_AES_128_GCM_SHA256           AES128-GCM-SHA256
519  TLS_RSA_WITH_AES_256_GCM_SHA384           AES256-GCM-SHA384
520
521  TLS_DH_RSA_WITH_AES_128_CBC_SHA256        DH-RSA-AES128-SHA256
522  TLS_DH_RSA_WITH_AES_256_CBC_SHA256        DH-RSA-AES256-SHA256
523  TLS_DH_RSA_WITH_AES_128_GCM_SHA256        DH-RSA-AES128-GCM-SHA256
524  TLS_DH_RSA_WITH_AES_256_GCM_SHA384        DH-RSA-AES256-GCM-SHA384
525
526  TLS_DH_DSS_WITH_AES_128_CBC_SHA256        DH-DSS-AES128-SHA256
527  TLS_DH_DSS_WITH_AES_256_CBC_SHA256        DH-DSS-AES256-SHA256
528  TLS_DH_DSS_WITH_AES_128_GCM_SHA256        DH-DSS-AES128-GCM-SHA256
529  TLS_DH_DSS_WITH_AES_256_GCM_SHA384        DH-DSS-AES256-GCM-SHA384
530
531  TLS_DHE_RSA_WITH_AES_128_CBC_SHA256       DHE-RSA-AES128-SHA256
532  TLS_DHE_RSA_WITH_AES_256_CBC_SHA256       DHE-RSA-AES256-SHA256
533  TLS_DHE_RSA_WITH_AES_128_GCM_SHA256       DHE-RSA-AES128-GCM-SHA256
534  TLS_DHE_RSA_WITH_AES_256_GCM_SHA384       DHE-RSA-AES256-GCM-SHA384
535
536  TLS_DHE_DSS_WITH_AES_128_CBC_SHA256       DHE-DSS-AES128-SHA256
537  TLS_DHE_DSS_WITH_AES_256_CBC_SHA256       DHE-DSS-AES256-SHA256
538  TLS_DHE_DSS_WITH_AES_128_GCM_SHA256       DHE-DSS-AES128-GCM-SHA256
539  TLS_DHE_DSS_WITH_AES_256_GCM_SHA384       DHE-DSS-AES256-GCM-SHA384
540
541  TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256      ECDH-RSA-AES128-SHA256
542  TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384      ECDH-RSA-AES256-SHA384
543  TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256      ECDH-RSA-AES128-GCM-SHA256
544  TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384      ECDH-RSA-AES256-GCM-SHA384
545
546  TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256    ECDH-ECDSA-AES128-SHA256
547  TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384    ECDH-ECDSA-AES256-SHA384
548  TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256    ECDH-ECDSA-AES128-GCM-SHA256
549  TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384    ECDH-ECDSA-AES256-GCM-SHA384
550
551  TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256     ECDHE-RSA-AES128-SHA256
552  TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384     ECDHE-RSA-AES256-SHA384
553  TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256     ECDHE-RSA-AES128-GCM-SHA256
554  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384     ECDHE-RSA-AES256-GCM-SHA384
555
556  TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256   ECDHE-ECDSA-AES128-SHA256
557  TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384   ECDHE-ECDSA-AES256-SHA384
558  TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDHE-ECDSA-AES128-GCM-SHA256
559  TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384   ECDHE-ECDSA-AES256-GCM-SHA384
560
561  TLS_DH_anon_WITH_AES_128_CBC_SHA256       ADH-AES128-SHA256
562  TLS_DH_anon_WITH_AES_256_CBC_SHA256       ADH-AES256-SHA256
563  TLS_DH_anon_WITH_AES_128_GCM_SHA256       ADH-AES128-GCM-SHA256
564  TLS_DH_anon_WITH_AES_256_GCM_SHA384       ADH-AES256-GCM-SHA384
565
566  RSA_WITH_AES_128_CCM                      AES128-CCM
567  RSA_WITH_AES_256_CCM                      AES256-CCM
568  DHE_RSA_WITH_AES_128_CCM                  DHE-RSA-AES128-CCM
569  DHE_RSA_WITH_AES_256_CCM                  DHE-RSA-AES256-CCM
570  RSA_WITH_AES_128_CCM_8                    AES128-CCM8
571  RSA_WITH_AES_256_CCM_8                    AES256-CCM8
572  DHE_RSA_WITH_AES_128_CCM_8                DHE-RSA-AES128-CCM8
573  DHE_RSA_WITH_AES_256_CCM_8                DHE-RSA-AES256-CCM8
574  ECDHE_ECDSA_WITH_AES_128_CCM              ECDHE-ECDSA-AES128-CCM
575  ECDHE_ECDSA_WITH_AES_256_CCM              ECDHE-ECDSA-AES256-CCM
576  ECDHE_ECDSA_WITH_AES_128_CCM_8            ECDHE-ECDSA-AES128-CCM8
577  ECDHE_ECDSA_WITH_AES_256_CCM_8            ECDHE-ECDSA-AES256-CCM8
578
579 =head2 Camellia HMAC-Based ciphersuites from RFC6367, extending TLS v1.2
580
581  TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 ECDHE-ECDSA-CAMELLIA128-SHA256
582  TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 ECDHE-ECDSA-CAMELLIA256-SHA384
583  TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256  ECDH-ECDSA-CAMELLIA128-SHA256
584  TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384  ECDH-ECDSA-CAMELLIA256-SHA384
585  TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256   ECDHE-RSA-CAMELLIA128-SHA256
586  TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384   ECDHE-RSA-CAMELLIA256-SHA384
587  TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256    ECDH-RSA-CAMELLIA128-SHA256
588  TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384    ECDH-RSA-CAMELLIA256-SHA384
589
590 =head2 Pre shared keying (PSK) ciphersuites
591
592  PSK_WITH_NULL_SHA                         PSK-NULL-SHA
593  DHE_PSK_WITH_NULL_SHA                     DHE-PSK-NULL-SHA
594  RSA_PSK_WITH_NULL_SHA                     RSA-PSK-NULL-SHA
595
596  PSK_WITH_RC4_128_SHA                      PSK-RC4-SHA
597  PSK_WITH_3DES_EDE_CBC_SHA                 PSK-3DES-EDE-CBC-SHA
598  PSK_WITH_AES_128_CBC_SHA                  PSK-AES128-CBC-SHA
599  PSK_WITH_AES_256_CBC_SHA                  PSK-AES256-CBC-SHA
600
601  DHE_PSK_WITH_RC4_128_SHA                  DHE-PSK-RC4-SHA
602  DHE_PSK_WITH_3DES_EDE_CBC_SHA             DHE-PSK-3DES-EDE-CBC-SHA
603  DHE_PSK_WITH_AES_128_CBC_SHA              DHE-PSK-AES128-CBC-SHA
604  DHE_PSK_WITH_AES_256_CBC_SHA              DHE-PSK-AES256-CBC-SHA
605
606  RSA_PSK_WITH_RC4_128_SHA                  RSA-PSK-RC4-SHA
607  RSA_PSK_WITH_3DES_EDE_CBC_SHA             RSA-PSK-3DES-EDE-CBC-SHA
608  RSA_PSK_WITH_AES_128_CBC_SHA              RSA-PSK-AES128-CBC-SHA
609  RSA_PSK_WITH_AES_256_CBC_SHA              RSA-PSK-AES256-CBC-SHA
610
611  PSK_WITH_AES_128_GCM_SHA256               PSK-AES128-GCM-SHA256
612  PSK_WITH_AES_256_GCM_SHA384               PSK-AES256-GCM-SHA384
613  DHE_PSK_WITH_AES_128_GCM_SHA256           DHE-PSK-AES128-GCM-SHA256
614  DHE_PSK_WITH_AES_256_GCM_SHA384           DHE-PSK-AES256-GCM-SHA384
615  RSA_PSK_WITH_AES_128_GCM_SHA256           RSA-PSK-AES128-GCM-SHA256
616  RSA_PSK_WITH_AES_256_GCM_SHA384           RSA-PSK-AES256-GCM-SHA384
617
618  PSK_WITH_AES_128_CBC_SHA256               PSK-AES128-CBC-SHA256
619  PSK_WITH_AES_256_CBC_SHA384               PSK-AES256-CBC-SHA384
620  PSK_WITH_NULL_SHA256                      PSK-NULL-SHA256
621  PSK_WITH_NULL_SHA384                      PSK-NULL-SHA384
622  DHE_PSK_WITH_AES_128_CBC_SHA256           DHE-PSK-AES128-CBC-SHA256
623  DHE_PSK_WITH_AES_256_CBC_SHA384           DHE-PSK-AES256-CBC-SHA384
624  DHE_PSK_WITH_NULL_SHA256                  DHE-PSK-NULL-SHA256
625  DHE_PSK_WITH_NULL_SHA384                  DHE-PSK-NULL-SHA384
626  RSA_PSK_WITH_AES_128_CBC_SHA256           RSA-PSK-AES128-CBC-SHA256
627  RSA_PSK_WITH_AES_256_CBC_SHA384           RSA-PSK-AES256-CBC-SHA384
628  RSA_PSK_WITH_NULL_SHA256                  RSA-PSK-NULL-SHA256
629  RSA_PSK_WITH_NULL_SHA384                  RSA-PSK-NULL-SHA384
630  PSK_WITH_AES_128_GCM_SHA256               PSK-AES128-GCM-SHA256
631  PSK_WITH_AES_256_GCM_SHA384               PSK-AES256-GCM-SHA384
632
633  ECDHE_PSK_WITH_RC4_128_SHA                ECDHE-PSK-RC4-SHA
634  ECDHE_PSK_WITH_3DES_EDE_CBC_SHA           ECDHE-PSK-3DES-EDE-CBC-SHA
635  ECDHE_PSK_WITH_AES_128_CBC_SHA            ECDHE-PSK-AES128-CBC-SHA
636  ECDHE_PSK_WITH_AES_256_CBC_SHA            ECDHE-PSK-AES256-CBC-SHA
637  ECDHE_PSK_WITH_AES_128_CBC_SHA256         ECDHE-PSK-AES128-CBC-SHA256
638  ECDHE_PSK_WITH_AES_256_CBC_SHA384         ECDHE-PSK-AES256-CBC-SHA384
639  ECDHE_PSK_WITH_NULL_SHA                   ECDHE-PSK-NULL-SHA
640  ECDHE_PSK_WITH_NULL_SHA256                ECDHE-PSK-NULL-SHA256
641  ECDHE_PSK_WITH_NULL_SHA384                ECDHE-PSK-NULL-SHA384
642
643  PSK_WITH_CAMELLIA_128_CBC_SHA256          PSK-CAMELLIA128-SHA256
644  PSK_WITH_CAMELLIA_256_CBC_SHA384          PSK-CAMELLIA256-SHA384
645
646  DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256      DHE-PSK-CAMELLIA128-SHA256
647  DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384      DHE-PSK-CAMELLIA256-SHA384
648
649  RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256      RSA-PSK-CAMELLIA128-SHA256
650  RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384      RSA-PSK-CAMELLIA256-SHA384
651
652  ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256    ECDHE-PSK-CAMELLIA128-SHA256
653  ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384    ECDHE-PSK-CAMELLIA256-SHA384
654
655  PSK_WITH_AES_128_CCM                      PSK-AES128-CCM
656  PSK_WITH_AES_256_CCM                      PSK-AES256-CCM
657  DHE_PSK_WITH_AES_128_CCM                  DHE-PSK-AES128-CCM
658  DHE_PSK_WITH_AES_256_CCM                  DHE-PSK-AES256-CCM
659  PSK_WITH_AES_128_CCM_8                    PSK-AES128-CCM8
660  PSK_WITH_AES_256_CCM_8                    PSK-AES256-CCM8
661  DHE_PSK_WITH_AES_128_CCM_8                DHE-PSK-AES128-CCM8
662  DHE_PSK_WITH_AES_256_CCM_8                DHE-PSK-AES256-CCM8
663
664 =head2 ChaCha20-Poly1305 cipher suites from draft-ietf-tls-chacha20-poly1305-04, extending TLS v1.2
665
666  TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256      ECDHE-RSA-CHACHA20-POLY1305
667  TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256    ECDHE-ECDSA-CHACHA20-POLY1305
668  TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256        DHE-RSA-CHACHA20-POLY1305
669  TLS_PSK_WITH_CHACHA20_POLY1305_SHA256            PSK-CHACHA20-POLY1305
670  TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256      ECDHE-PSK-CHACHA20-POLY1305
671  TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256        DHE-PSK-CHACHA20-POLY1305
672  TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256        RSA-PSK-CHACHA20-POLY1305
673
674 =head1 NOTES
675
676 Some compiled versions of OpenSSL may not include all the ciphers
677 listed here because some ciphers were excluded at compile time.
678
679 =head1 EXAMPLES
680
681 Verbose listing of all OpenSSL ciphers including NULL ciphers:
682
683  openssl ciphers -v 'ALL:eNULL'
684
685 Include all ciphers except NULL and anonymous DH then sort by
686 strength:
687
688  openssl ciphers -v 'ALL:!ADH:@STRENGTH'
689
690 Include all ciphers except ones with no encryption (eNULL) or no
691 authentication (aNULL):
692
693  openssl ciphers -v 'ALL:!aNULL'
694
695 Include only 3DES ciphers and then place RSA ciphers last:
696
697  openssl ciphers -v '3DES:+RSA'
698
699 Include all RC4 ciphers but leave out those without authentication:
700
701  openssl ciphers -v 'RC4:!COMPLEMENTOFDEFAULT'
702
703 Include all ciphers with RSA authentication but leave out ciphers without
704 encryption.
705
706  openssl ciphers -v 'RSA:!COMPLEMENTOFALL'
707
708 Set security level to 2 and display all ciphers consistent with level 2:
709
710  openssl ciphers -s -v 'ALL:@SECLEVEL=2'
711
712 =head1 SEE ALSO
713
714 L<s_client(1)>, L<s_server(1)>, L<ssl(3)>
715
716 =head1 HISTORY
717
718 The B<-V> option for the B<ciphers> command was added in OpenSSL 1.0.0.
719
720 =cut