ciphers (1)

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========================================================================

(The comments found at the beginning of the groff file "man1/ciphers.1ssl".)

NAME

ciphers - SSL cipher display and cipher list tool.

SYNOPSIS

openssl ciphers [-v] [-V] [-ssl2] [-ssl3] [-tls1] [cipherlist]

DESCRIPTION

The ciphers command converts textual OpenSSL cipher lists into ordered cipher preference lists. It can be used as a test tool to determine the appropriate cipherlist.

COMMAND OPTIONS

-v

Verbose option. List ciphers with a complete description of protocol version (SSLv2 or SSLv3; the latter includes

TLS

), key exchange, authentication, encryption and mac algorithms used along with any key size restrictions and whether the algorithm is classed as an ``export'' cipher. Note that without the -v option, ciphers may seem to appear twice in a cipher list; this is when similar ciphers are available for

SSL

v2 and for

SSL

v3/TLS v1.

-V

Like -v, but include cipher suite codes in output (hex format).

-ssl3, -tls1

This lists ciphers compatible with any of SSLv3, TLSv1, TLSv1.1 or TLSv1.2.

-ssl2

Only include SSLv2 ciphers.

-h, -?

Print a brief usage message.

cipherlist

A cipher list to convert to a cipher preference list. If it is not included then the default cipher list will be used. The format is described below.

CIPHER LIST FORMAT

The cipher list consists of one or more cipher strings separated by colons. Commas or spaces are also acceptable separators but colons are normally used.

The actual cipher string can take several different forms.

It can consist of a single cipher suite such as

.

It can represent a list of cipher suites containing a certain algorithm, or cipher suites of a certain type. For example

represents all ciphers suites using the digest algorithm and SSLv3 represents all v3 algorithms.

Lists of cipher suites can be combined in a single cipher string using the + character. This is used as a logical and operation. For example

represents all cipher suites containing the and the algorithms.

Each cipher string can be optionally preceded by the characters !, - or +.

If ! is used then the ciphers are permanently deleted from the list. The ciphers deleted can never reappear in the list even if they are explicitly stated.

If - is used then the ciphers are deleted from the list, but some or all of the ciphers can be added again by later options.

If + is used then the ciphers are moved to the end of the list. This option doesn't add any new ciphers it just moves matching existing ones.

If none of these characters is present then the string is just interpreted as a list of ciphers to be appended to the current preference list. If the list includes any ciphers already present they will be ignored: that is they will not moved to the end of the list.

Additionally the cipher string @STRENGTH can be used at any point to sort the current cipher list in order of encryption algorithm key length.

CIPHER STRINGS

The following is a list of all permitted cipher strings and their meanings.

DEFAULT

The default cipher list. This is determined at compile time and is normally

ALL:

!EXPORT:!aNULL:!eNULL:!SSLv2. When used, this must be the first cipherstring specified.

COMPLEMENTOFDEFAULT

the ciphers included in

ALL

, but not enabled by default. Currently this is

ADH

and

AECDH

. Note that this rule does not cover eNULL, which is not included by

ALL

(use

COMPLEMENTOFALL

if necessary).

ALL

all cipher suites except the eNULL ciphers which must be explicitly enabled; as of OpenSSL, the

ALL

cipher suites are reasonably ordered by default

COMPLEMENTOFALL

the cipher suites not enabled by

ALL

, currently being eNULL.

HIGH

``high'' encryption cipher suites. This currently means those with key lengths larger than 128 bits, and some cipher suites with 128-bit keys.

MEDIUM

``medium'' encryption cipher suites, currently some of those using 128 bit encryption.

LOW

Low strength encryption cipher suites, currently those using 64 or 56 bit encryption algorithms but excluding export cipher suites. As of OpenSSL 1.0.2g, these are disabled in default builds.

EXP

,

EXPORT

Export strength encryption algorithms. Including 40 and 56 bits algorithms. As of OpenSSL 1.0.2g, these are disabled in default builds.

EXPORT40

40-bit export encryption algorithms As of OpenSSL 1.0.2g, these are disabled in default builds.

EXPORT56

56-bit export encryption algorithms. In OpenSSL 0.9.8c and later the set of 56 bit export ciphers is empty unless OpenSSL has been explicitly configured with support for experimental ciphers. As of OpenSSL 1.0.2g, these are disabled in default builds.

eNULL,

NULL

The ``

NULL''

ciphers that is those offering no encryption. Because these offer no encryption at all and are a security risk they are not enabled via either the

DEFAULT

or

ALL

cipher strings. Be careful when building cipherlists out of lower-level primitives such as kRSA or aECDSA as these do overlap with the eNULL ciphers. When in doubt, include !eNULL in your cipherlist.

aNULL

The cipher suites offering no authentication. This is currently the anonymous

DH

algorithms and anonymous

ECDH

algorithms. These cipher suites are vulnerable to a ``man in the middle'' attack and so their use is normally discouraged. These are excluded from the

DEFAULT

ciphers, but included in the

ALL

ciphers. Be careful when building cipherlists out of lower-level primitives such as kDHE or

AES

as these do overlap with the aNULL ciphers. When in doubt, include !aNULL in your cipherlist.

kRSA,

RSA

cipher suites using

RSA

key exchange.

kDHr, kDHd, kDH

cipher suites using

DH

key agreement and

DH

certificates signed by CAs with

RSA

and

DSS

keys or either respectively.

kDHE, kEDH

cipher suites using ephemeral

DH

key agreement, including anonymous cipher suites.

DHE

,

EDH

cipher suites using authenticated ephemeral

DH

key agreement.

ADH

anonymous

DH

cipher suites, note that this does not include anonymous Elliptic Curve

DH

(

ECDH

) cipher suites.

DH

cipher suites using

DH,

including anonymous

DH,

ephemeral

DH

and fixed

DH.

kECDHr, kECDHe, kECDH

cipher suites using fixed

ECDH

key agreement signed by CAs with

RSA

and

ECDSA

keys or either respectively.

kECDHE, kEECDH

cipher suites using ephemeral

ECDH

key agreement, including anonymous cipher suites.

ECDHE

,

EECDH

cipher suites using authenticated ephemeral

ECDH

key agreement.

AECDH

anonymous Elliptic Curve Diffie Hellman cipher suites.

ECDH

cipher suites using

ECDH

key exchange, including anonymous, ephemeral and fixed

ECDH.

aRSA

cipher suites using

RSA

authentication, i.e. the certificates carry

RSA

keys.

aDSS,

DSS

cipher suites using

DSS

authentication, i.e. the certificates carry

DSS

keys.

aDH

cipher suites effectively using

DH

authentication, i.e. the certificates carry

DH

keys.

aECDH

cipher suites effectively using

ECDH

authentication, i.e. the certificates carry

ECDH

keys.

aECDSA,

ECDSA

cipher suites using

ECDSA

authentication, i.e. the certificates carry

ECDSA

keys.

kFZA, aFZA, eFZA,

FZA

ciphers suites using

FORTEZZA

key exchange, authentication, encryption or all

FORTEZZA

algorithms. Not implemented.

TLSv1.2, TLSv1, SSLv3, SSLv2

TLS

v1.2,

TLS

v1.0,

SSL

v3.0 or

SSL

v2.0 cipher suites respectively. Note: there are no ciphersuites specific to

TLS

v1.1.

AES128

,

AES256

,

AES

cipher suites using 128 bit

AES, 256

bit

AES

or either 128 or 256 bit

AES.

AESGCM

AES

in Galois Counter Mode (

GCM

): these ciphersuites are only supported in

TLS

v1.2.

CAMELLIA128

,

CAMELLIA256

,

CAMELLIA

cipher suites using 128 bit

CAMELLIA, 256

bit

CAMELLIA

or either 128 or 256 bit

CAMELLIA.

3DES

cipher suites using triple

DES.

DES

cipher suites using

DES

(not triple

DES

).

RC4

cipher suites using

RC4.

RC2

cipher suites using

RC2.

IDEA

cipher suites using

IDEA.

SEED

cipher suites using

SEED.

MD5

cipher suites using

MD5.

SHA1

,

SHA

cipher suites using

SHA1.

SHA256

,

SHA384

ciphersuites using

SHA256

or

SHA384.

aGOST

cipher suites using

GOST R 34.10

(either 2001 or 94) for authenticaction (needs an engine supporting

GOST

algorithms).

aGOST01

cipher suites using

GOST R 34.10-2001

authentication.

aGOST94

cipher suites using

GOST R 34.10-94

authentication (note that R 34.10-94 standard has been expired so use

GOST R 34.10-2001

)

kGOST

cipher suites, using

VKO 34.10

key exchange, specified in the

RFC 4357.

GOST94

cipher suites, using

HMAC

based on

GOST R 34.11-94.

GOST89MAC

cipher suites using

GOST 28147-89 MAC

instead of

HMAC.

PSK

cipher suites using pre-shared keys (

PSK

).

SUITEB128

,

SUITEB128ONLY

,

SUITEB192

enables suite B mode operation using 128 (permitting 192 bit mode by peer) 128 bit (not permitting 192 bit by peer) or 192 bit level of security respectively. If used these cipherstrings should appear first in the cipher list and anything after them is ignored. Setting Suite B mode has additional consequences required to comply with

RFC6460.

In particular the supported signature algorithms is reduced to support only

ECDSA

and

SHA256

or

SHA384,

only the elliptic curves P-256 and P-384 can be used and only the two suite B compliant ciphersuites (

ECDHE-ECDSA-AES128-GCM-SHA256

and

ECDHE-ECDSA-AES256-GCM-SHA384

) are permissible.

CIPHER SUITE NAMES

The following lists give the or cipher suites names from the relevant specification and their OpenSSL equivalents. It should be noted, that several cipher suite names do not include the authentication used, e.g. In these cases, authentication is used.

SSL

v3.0 cipher suites.

 SSL_RSA_WITH_NULL_MD5                   NULL-MD5
 SSL_RSA_WITH_NULL_SHA                   NULL-SHA
 SSL_RSA_EXPORT_WITH_RC4_40_MD5          EXP-RC4-MD5
 SSL_RSA_WITH_RC4_128_MD5                RC4-MD5
 SSL_RSA_WITH_RC4_128_SHA                RC4-SHA
 SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5      EXP-RC2-CBC-MD5
 SSL_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
 SSL_RSA_EXPORT_WITH_DES40_CBC_SHA       EXP-DES-CBC-SHA
 SSL_RSA_WITH_DES_CBC_SHA                DES-CBC-SHA
 SSL_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA

 SSL_DH_DSS_WITH_DES_CBC_SHA             DH-DSS-DES-CBC-SHA
 SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA        DH-DSS-DES-CBC3-SHA
 SSL_DH_RSA_WITH_DES_CBC_SHA             DH-RSA-DES-CBC-SHA
 SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA        DH-RSA-DES-CBC3-SHA
 SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   EXP-EDH-DSS-DES-CBC-SHA
 SSL_DHE_DSS_WITH_DES_CBC_SHA            EDH-DSS-CBC-SHA
 SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA       EDH-DSS-DES-CBC3-SHA
 SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA   EXP-EDH-RSA-DES-CBC-SHA
 SSL_DHE_RSA_WITH_DES_CBC_SHA            EDH-RSA-DES-CBC-SHA
 SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA       EDH-RSA-DES-CBC3-SHA

 SSL_DH_anon_EXPORT_WITH_RC4_40_MD5      EXP-ADH-RC4-MD5
 SSL_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
 SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA   EXP-ADH-DES-CBC-SHA
 SSL_DH_anon_WITH_DES_CBC_SHA            ADH-DES-CBC-SHA
 SSL_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA

 SSL_FORTEZZA_KEA_WITH_NULL_SHA          Not implemented.
 SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA  Not implemented.
 SSL_FORTEZZA_KEA_WITH_RC4_128_SHA       Not implemented.

TLS

v1.0 cipher suites.

 TLS_RSA_WITH_NULL_MD5                   NULL-MD5
 TLS_RSA_WITH_NULL_SHA                   NULL-SHA
 TLS_RSA_EXPORT_WITH_RC4_40_MD5          EXP-RC4-MD5
 TLS_RSA_WITH_RC4_128_MD5                RC4-MD5
 TLS_RSA_WITH_RC4_128_SHA                RC4-SHA
 TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5      EXP-RC2-CBC-MD5
 TLS_RSA_WITH_IDEA_CBC_SHA               IDEA-CBC-SHA
 TLS_RSA_EXPORT_WITH_DES40_CBC_SHA       EXP-DES-CBC-SHA
 TLS_RSA_WITH_DES_CBC_SHA                DES-CBC-SHA
 TLS_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA

 TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA    Not implemented.
 TLS_DH_DSS_WITH_DES_CBC_SHA             Not implemented.
 TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA        Not implemented.
 TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA    Not implemented.
 TLS_DH_RSA_WITH_DES_CBC_SHA             Not implemented.
 TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA        Not implemented.
 TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   EXP-EDH-DSS-DES-CBC-SHA
 TLS_DHE_DSS_WITH_DES_CBC_SHA            EDH-DSS-CBC-SHA
 TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA       EDH-DSS-DES-CBC3-SHA
 TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA   EXP-EDH-RSA-DES-CBC-SHA
 TLS_DHE_RSA_WITH_DES_CBC_SHA            EDH-RSA-DES-CBC-SHA
 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA       EDH-RSA-DES-CBC3-SHA

 TLS_DH_anon_EXPORT_WITH_RC4_40_MD5      EXP-ADH-RC4-MD5
 TLS_DH_anon_WITH_RC4_128_MD5            ADH-RC4-MD5
 TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA   EXP-ADH-DES-CBC-SHA
 TLS_DH_anon_WITH_DES_CBC_SHA            ADH-DES-CBC-SHA
 TLS_DH_anon_WITH_3DES_EDE_CBC_SHA       ADH-DES-CBC3-SHA

AES

ciphersuites from

RFC3268,

extending

TLS

v1.0

 TLS_RSA_WITH_AES_128_CBC_SHA            AES128-SHA
 TLS_RSA_WITH_AES_256_CBC_SHA            AES256-SHA

 TLS_DH_DSS_WITH_AES_128_CBC_SHA         DH-DSS-AES128-SHA
 TLS_DH_DSS_WITH_AES_256_CBC_SHA         DH-DSS-AES256-SHA
 TLS_DH_RSA_WITH_AES_128_CBC_SHA         DH-RSA-AES128-SHA
 TLS_DH_RSA_WITH_AES_256_CBC_SHA         DH-RSA-AES256-SHA

 TLS_DHE_DSS_WITH_AES_128_CBC_SHA        DHE-DSS-AES128-SHA
 TLS_DHE_DSS_WITH_AES_256_CBC_SHA        DHE-DSS-AES256-SHA
 TLS_DHE_RSA_WITH_AES_128_CBC_SHA        DHE-RSA-AES128-SHA
 TLS_DHE_RSA_WITH_AES_256_CBC_SHA        DHE-RSA-AES256-SHA

 TLS_DH_anon_WITH_AES_128_CBC_SHA        ADH-AES128-SHA
 TLS_DH_anon_WITH_AES_256_CBC_SHA        ADH-AES256-SHA

Camellia ciphersuites from

RFC4132,

extending

TLS

v1.0

 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA      CAMELLIA128-SHA
 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA      CAMELLIA256-SHA

 TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA   DH-DSS-CAMELLIA128-SHA
 TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA   DH-DSS-CAMELLIA256-SHA
 TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA   DH-RSA-CAMELLIA128-SHA
 TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA   DH-RSA-CAMELLIA256-SHA

 TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA  DHE-DSS-CAMELLIA128-SHA
 TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA  DHE-DSS-CAMELLIA256-SHA
 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA  DHE-RSA-CAMELLIA128-SHA
 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA  DHE-RSA-CAMELLIA256-SHA

 TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA  ADH-CAMELLIA128-SHA
 TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA  ADH-CAMELLIA256-SHA

SEED

ciphersuites from

RFC4162,

extending

TLS

v1.0

 TLS_RSA_WITH_SEED_CBC_SHA              SEED-SHA

 TLS_DH_DSS_WITH_SEED_CBC_SHA           DH-DSS-SEED-SHA
 TLS_DH_RSA_WITH_SEED_CBC_SHA           DH-RSA-SEED-SHA

 TLS_DHE_DSS_WITH_SEED_CBC_SHA          DHE-DSS-SEED-SHA
 TLS_DHE_RSA_WITH_SEED_CBC_SHA          DHE-RSA-SEED-SHA

 TLS_DH_anon_WITH_SEED_CBC_SHA          ADH-SEED-SHA

GOST

ciphersuites from draft-chudov-cryptopro-cptls, extending

TLS

v1.0

Note: these ciphers require an engine which including cryptographic algorithms, such as the ccgost engine, included in the OpenSSL distribution.

 TLS_GOSTR341094_WITH_28147_CNT_IMIT GOST94-GOST89-GOST89
 TLS_GOSTR341001_WITH_28147_CNT_IMIT GOST2001-GOST89-GOST89
 TLS_GOSTR341094_WITH_NULL_GOSTR3411 GOST94-NULL-GOST94
 TLS_GOSTR341001_WITH_NULL_GOSTR3411 GOST2001-NULL-GOST94

Additional Export 1024 and other cipher suites

Note: these ciphers can also be used in v3.

 TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA     EXP1024-DES-CBC-SHA
 TLS_RSA_EXPORT1024_WITH_RC4_56_SHA      EXP1024-RC4-SHA
 TLS_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA EXP1024-DHE-DSS-DES-CBC-SHA
 TLS_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA  EXP1024-DHE-DSS-RC4-SHA
 TLS_DHE_DSS_WITH_RC4_128_SHA            DHE-DSS-RC4-SHA

Elliptic curve cipher suites.

 TLS_ECDH_RSA_WITH_NULL_SHA              ECDH-RSA-NULL-SHA
 TLS_ECDH_RSA_WITH_RC4_128_SHA           ECDH-RSA-RC4-SHA
 TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA      ECDH-RSA-DES-CBC3-SHA
 TLS_ECDH_RSA_WITH_AES_128_CBC_SHA       ECDH-RSA-AES128-SHA
 TLS_ECDH_RSA_WITH_AES_256_CBC_SHA       ECDH-RSA-AES256-SHA

 TLS_ECDH_ECDSA_WITH_NULL_SHA            ECDH-ECDSA-NULL-SHA
 TLS_ECDH_ECDSA_WITH_RC4_128_SHA         ECDH-ECDSA-RC4-SHA
 TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA    ECDH-ECDSA-DES-CBC3-SHA
 TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA     ECDH-ECDSA-AES128-SHA
 TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA     ECDH-ECDSA-AES256-SHA

 TLS_ECDHE_RSA_WITH_NULL_SHA             ECDHE-RSA-NULL-SHA
 TLS_ECDHE_RSA_WITH_RC4_128_SHA          ECDHE-RSA-RC4-SHA
 TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA     ECDHE-RSA-DES-CBC3-SHA
 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA      ECDHE-RSA-AES128-SHA
 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA      ECDHE-RSA-AES256-SHA

 TLS_ECDHE_ECDSA_WITH_NULL_SHA           ECDHE-ECDSA-NULL-SHA
 TLS_ECDHE_ECDSA_WITH_RC4_128_SHA        ECDHE-ECDSA-RC4-SHA
 TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA   ECDHE-ECDSA-DES-CBC3-SHA
 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA    ECDHE-ECDSA-AES128-SHA
 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA    ECDHE-ECDSA-AES256-SHA

 TLS_ECDH_anon_WITH_NULL_SHA             AECDH-NULL-SHA
 TLS_ECDH_anon_WITH_RC4_128_SHA          AECDH-RC4-SHA
 TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA     AECDH-DES-CBC3-SHA
 TLS_ECDH_anon_WITH_AES_128_CBC_SHA      AECDH-AES128-SHA
 TLS_ECDH_anon_WITH_AES_256_CBC_SHA      AECDH-AES256-SHA

TLS

v1.2 cipher suites

 TLS_RSA_WITH_NULL_SHA256                  NULL-SHA256

 TLS_RSA_WITH_AES_128_CBC_SHA256           AES128-SHA256
 TLS_RSA_WITH_AES_256_CBC_SHA256           AES256-SHA256
 TLS_RSA_WITH_AES_128_GCM_SHA256           AES128-GCM-SHA256
 TLS_RSA_WITH_AES_256_GCM_SHA384           AES256-GCM-SHA384

 TLS_DH_RSA_WITH_AES_128_CBC_SHA256        DH-RSA-AES128-SHA256
 TLS_DH_RSA_WITH_AES_256_CBC_SHA256        DH-RSA-AES256-SHA256
 TLS_DH_RSA_WITH_AES_128_GCM_SHA256        DH-RSA-AES128-GCM-SHA256
 TLS_DH_RSA_WITH_AES_256_GCM_SHA384        DH-RSA-AES256-GCM-SHA384

 TLS_DH_DSS_WITH_AES_128_CBC_SHA256        DH-DSS-AES128-SHA256
 TLS_DH_DSS_WITH_AES_256_CBC_SHA256        DH-DSS-AES256-SHA256
 TLS_DH_DSS_WITH_AES_128_GCM_SHA256        DH-DSS-AES128-GCM-SHA256
 TLS_DH_DSS_WITH_AES_256_GCM_SHA384        DH-DSS-AES256-GCM-SHA384

 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256       DHE-RSA-AES128-SHA256
 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256       DHE-RSA-AES256-SHA256
 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256       DHE-RSA-AES128-GCM-SHA256
 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384       DHE-RSA-AES256-GCM-SHA384

 TLS_DHE_DSS_WITH_AES_128_CBC_SHA256       DHE-DSS-AES128-SHA256
 TLS_DHE_DSS_WITH_AES_256_CBC_SHA256       DHE-DSS-AES256-SHA256
 TLS_DHE_DSS_WITH_AES_128_GCM_SHA256       DHE-DSS-AES128-GCM-SHA256
 TLS_DHE_DSS_WITH_AES_256_GCM_SHA384       DHE-DSS-AES256-GCM-SHA384

 TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256      ECDH-RSA-AES128-SHA256
 TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384      ECDH-RSA-AES256-SHA384
 TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256      ECDH-RSA-AES128-GCM-SHA256
 TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384      ECDH-RSA-AES256-GCM-SHA384

 TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256    ECDH-ECDSA-AES128-SHA256
 TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384    ECDH-ECDSA-AES256-SHA384
 TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256    ECDH-ECDSA-AES128-GCM-SHA256
 TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384    ECDH-ECDSA-AES256-GCM-SHA384

 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256     ECDHE-RSA-AES128-SHA256
 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384     ECDHE-RSA-AES256-SHA384
 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256     ECDHE-RSA-AES128-GCM-SHA256
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384     ECDHE-RSA-AES256-GCM-SHA384

 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256   ECDHE-ECDSA-AES128-SHA256
 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384   ECDHE-ECDSA-AES256-SHA384
 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDHE-ECDSA-AES128-GCM-SHA256
 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384   ECDHE-ECDSA-AES256-GCM-SHA384

 TLS_DH_anon_WITH_AES_128_CBC_SHA256       ADH-AES128-SHA256
 TLS_DH_anon_WITH_AES_256_CBC_SHA256       ADH-AES256-SHA256
 TLS_DH_anon_WITH_AES_128_GCM_SHA256       ADH-AES128-GCM-SHA256
 TLS_DH_anon_WITH_AES_256_GCM_SHA384       ADH-AES256-GCM-SHA384

Pre shared keying (

PSK

) cipheruites

 TLS_PSK_WITH_RC4_128_SHA                  PSK-RC4-SHA
 TLS_PSK_WITH_3DES_EDE_CBC_SHA             PSK-3DES-EDE-CBC-SHA
 TLS_PSK_WITH_AES_128_CBC_SHA              PSK-AES128-CBC-SHA
 TLS_PSK_WITH_AES_256_CBC_SHA              PSK-AES256-CBC-SHA

Deprecated

SSL

v2.0 cipher suites.

 SSL_CK_RC4_128_WITH_MD5                 RC4-MD5
 SSL_CK_RC4_128_EXPORT40_WITH_MD5        Not implemented.
 SSL_CK_RC2_128_CBC_WITH_MD5             RC2-CBC-MD5
 SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5    Not implemented.
 SSL_CK_IDEA_128_CBC_WITH_MD5            IDEA-CBC-MD5
 SSL_CK_DES_64_CBC_WITH_MD5              Not implemented.
 SSL_CK_DES_192_EDE3_CBC_WITH_MD5        DES-CBC3-MD5

NOTES

Some compiled versions of OpenSSL may not include all the ciphers listed here because some ciphers were excluded at compile time.

EXAMPLES

Verbose listing of all OpenSSL ciphers including ciphers:

 openssl ciphers -v 'ALL:eNULL'

Include all ciphers except

and anonymous then sort by strength:

 openssl ciphers -v 'ALL:!ADH:@STRENGTH'

Include all ciphers except ones with no encryption (eNULL) or no authentication (aNULL):

 openssl ciphers -v 'ALL:!aNULL'

Include only 3DES ciphers and then place

ciphers last:

 openssl ciphers -v '3DES:+RSA'

Include all

ciphers but leave out those without authentication:

 openssl ciphers -v 'RC4:!COMPLEMENTOFDEFAULT'

Include all chiphers with

authentication but leave out ciphers without encryption.

 openssl ciphers -v 'RSA:!COMPLEMENTOFALL'

SEE ALSO

s_client(1), s_server(1), ssl(3)

HISTORY

The and selection options for cipherlist strings were added in OpenSSL 0.9.7. The -V option for the ciphers command was added in OpenSSL 1.0.0.