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Code Issues Releases Wiki Activity
c515294cec
curl/docs/CIPHERS.md
Robert Prag 9aefbff30d
schannel: support selecting ciphers 
Given the contstraints of SChannel, I'm exposing these as the algorithms
themselves instead; while replicating the ciphersuite as specified by
OpenSSL would have been preferable, I found no way in the SChannel API
to do so.

To use this from the commandline, you need to pass the names of contants
defining the desired algorithms. For example, curl --ciphers
"CALG_SHA1:CALG_RSA_SIGN:CALG_RSA_KEYX:CALG_AES_128:CALG_DH_EPHEM"
https://github.com The specific names come from wincrypt.h

Closes #2630
2018-06-12 12:08:40 +02:00

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# Ciphers
With curl's options `CURLOPT_SSL_CIPHER_LIST` and `--ciphers` users can
control which ciphers to consider when negotiating TLS connections.
The names of the known ciphers differ depending on which TLS backend that
libcurl was built to use. This is an attempt to list known cipher names.
## OpenSSL
(based on [OpenSSL docs](https://www.openssl.org/docs/man1.1.0/apps/ciphers.html))
### SSL3 cipher suites
`NULL-MD5`
`NULL-SHA`
`RC4-MD5`
`RC4-SHA`
`IDEA-CBC-SHA`
`DES-CBC3-SHA`
`DH-DSS-DES-CBC3-SHA`
`DH-RSA-DES-CBC3-SHA`
`DHE-DSS-DES-CBC3-SHA`
`DHE-RSA-DES-CBC3-SHA`
`ADH-RC4-MD5`
`ADH-DES-CBC3-SHA`
### TLS v1.0 cipher suites
`NULL-MD5`
`NULL-SHA`
`RC4-MD5`
`RC4-SHA`
`IDEA-CBC-SHA`
`DES-CBC3-SHA`
`DHE-DSS-DES-CBC3-SHA`
`DHE-RSA-DES-CBC3-SHA`
`ADH-RC4-MD5`
`ADH-DES-CBC3-SHA`
### AES ciphersuites from RFC3268, extending TLS v1.0
`AES128-SHA`
`AES256-SHA`
`DH-DSS-AES128-SHA`
`DH-DSS-AES256-SHA`
`DH-RSA-AES128-SHA`
`DH-RSA-AES256-SHA`
`DHE-DSS-AES128-SHA`
`DHE-DSS-AES256-SHA`
`DHE-RSA-AES128-SHA`
`DHE-RSA-AES256-SHA`
`ADH-AES128-SHA`
`ADH-AES256-SHA`
### SEED ciphersuites from RFC4162, extending TLS v1.0
`SEED-SHA`
`DH-DSS-SEED-SHA`
`DH-RSA-SEED-SHA`
`DHE-DSS-SEED-SHA`
`DHE-RSA-SEED-SHA`
`ADH-SEED-SHA`
### GOST ciphersuites, extending TLS v1.0
`GOST94-GOST89-GOST89`
`GOST2001-GOST89-GOST89`
`GOST94-NULL-GOST94`
`GOST2001-NULL-GOST94`
### Elliptic curve cipher suites
`ECDHE-RSA-NULL-SHA`
`ECDHE-RSA-RC4-SHA`
`ECDHE-RSA-DES-CBC3-SHA`
`ECDHE-RSA-AES128-SHA`
`ECDHE-RSA-AES256-SHA`
`ECDHE-ECDSA-NULL-SHA`
`ECDHE-ECDSA-RC4-SHA`
`ECDHE-ECDSA-DES-CBC3-SHA`
`ECDHE-ECDSA-AES128-SHA`
`ECDHE-ECDSA-AES256-SHA`
`AECDH-NULL-SHA`
`AECDH-RC4-SHA`
`AECDH-DES-CBC3-SHA`
`AECDH-AES128-SHA`
`AECDH-AES256-SHA`
### TLS v1.2 cipher suites
`NULL-SHA256`
`AES128-SHA256`
`AES256-SHA256`
`AES128-GCM-SHA256`
`AES256-GCM-SHA384`
`DH-RSA-AES128-SHA256`
`DH-RSA-AES256-SHA256`
`DH-RSA-AES128-GCM-SHA256`
`DH-RSA-AES256-GCM-SHA384`
`DH-DSS-AES128-SHA256`
`DH-DSS-AES256-SHA256`
`DH-DSS-AES128-GCM-SHA256`
`DH-DSS-AES256-GCM-SHA384`
`DHE-RSA-AES128-SHA256`
`DHE-RSA-AES256-SHA256`
`DHE-RSA-AES128-GCM-SHA256`
`DHE-RSA-AES256-GCM-SHA384`
`DHE-DSS-AES128-SHA256`
`DHE-DSS-AES256-SHA256`
`DHE-DSS-AES128-GCM-SHA256`
`DHE-DSS-AES256-GCM-SHA384`
`ECDHE-RSA-AES128-SHA256`
`ECDHE-RSA-AES256-SHA384`
`ECDHE-RSA-AES128-GCM-SHA256`
`ECDHE-RSA-AES256-GCM-SHA384`
`ECDHE-ECDSA-AES128-SHA256`
`ECDHE-ECDSA-AES256-SHA384`
`ECDHE-ECDSA-AES128-GCM-SHA256`
`ECDHE-ECDSA-AES256-GCM-SHA384`
`ADH-AES128-SHA256`
`ADH-AES256-SHA256`
`ADH-AES128-GCM-SHA256`
`ADH-AES256-GCM-SHA384`
`AES128-CCM`
`AES256-CCM`
`DHE-RSA-AES128-CCM`
`DHE-RSA-AES256-CCM`
`AES128-CCM8`
`AES256-CCM8`
`DHE-RSA-AES128-CCM8`
`DHE-RSA-AES256-CCM8`
`ECDHE-ECDSA-AES128-CCM`
`ECDHE-ECDSA-AES256-CCM`
`ECDHE-ECDSA-AES128-CCM8`
`ECDHE-ECDSA-AES256-CCM8`
### Camellia HMAC-Based ciphersuites from RFC6367, extending TLS v1.2
`ECDHE-ECDSA-CAMELLIA128-SHA256`
`ECDHE-ECDSA-CAMELLIA256-SHA384`
`ECDHE-RSA-CAMELLIA128-SHA256`
`ECDHE-RSA-CAMELLIA256-SHA384`
### TLS 1.3 cipher suites
(Note: the TLS 1.3 cipher suites are set with a separate option.)
`TLS13-AES-256-GCM-SHA384`
`TLS13-CHACHA20-POLY1305-SHA256`
`TLS13-AES-128-GCM-SHA256`
`TLS13-AES-128-CCM-8-SHA256`
`TLS13-AES-128-CCM-SHA256`
## NSS
### Totally insecure
`rc4`
`rc4-md5`
`rc4export`
`rc2`
`rc2export`
`des`
`desede3`
### SSL3/TLS cipher suites
`rsa_rc4_128_md5`
`rsa_rc4_128_sha`
`rsa_3des_sha`
`rsa_des_sha`
`rsa_rc4_40_md5`
`rsa_rc2_40_md5`
`rsa_null_md5`
`rsa_null_sha`
`fips_3des_sha`
`fips_des_sha`
`fortezza`
`fortezza_rc4_128_sha`
`fortezza_null`
### TLS 1.0 Exportable 56-bit Cipher Suites
`rsa_des_56_sha`
`rsa_rc4_56_sha`
### AES ciphers
`dhe_dss_aes_128_cbc_sha`
`dhe_dss_aes_256_cbc_sha`
`dhe_rsa_aes_128_cbc_sha`
`dhe_rsa_aes_256_cbc_sha`
`rsa_aes_128_sha`
`rsa_aes_256_sha`
### ECC ciphers
`ecdh_ecdsa_null_sha`
`ecdh_ecdsa_rc4_128_sha`
`ecdh_ecdsa_3des_sha`
`ecdh_ecdsa_aes_128_sha`
`ecdh_ecdsa_aes_256_sha`
`ecdhe_ecdsa_null_sha`
`ecdhe_ecdsa_rc4_128_sha`
`ecdhe_ecdsa_3des_sha`
`ecdhe_ecdsa_aes_128_sha`
`ecdhe_ecdsa_aes_256_sha`
`ecdh_rsa_null_sha`
`ecdh_rsa_128_sha`
`ecdh_rsa_3des_sha`
`ecdh_rsa_aes_128_sha`
`ecdh_rsa_aes_256_sha`
`ecdhe_rsa_null`
`ecdhe_rsa_rc4_128_sha`
`ecdhe_rsa_3des_sha`
`ecdhe_rsa_aes_128_sha`
`ecdhe_rsa_aes_256_sha`
`ecdh_anon_null_sha`
`ecdh_anon_rc4_128sha`
`ecdh_anon_3des_sha`
`ecdh_anon_aes_128_sha`
`ecdh_anon_aes_256_sha`
### HMAC-SHA256 cipher suites
`rsa_null_sha_256`
`rsa_aes_128_cbc_sha_256`
`rsa_aes_256_cbc_sha_256`
`dhe_rsa_aes_128_cbc_sha_256`
`dhe_rsa_aes_256_cbc_sha_256`
`ecdhe_ecdsa_aes_128_cbc_sha_256`
`ecdhe_rsa_aes_128_cbc_sha_256`
### AES GCM cipher suites in RFC 5288 and RFC 5289
`rsa_aes_128_gcm_sha_256`
`dhe_rsa_aes_128_gcm_sha_256`
`dhe_dss_aes_128_gcm_sha_256`
`ecdhe_ecdsa_aes_128_gcm_sha_256`
`ecdh_ecdsa_aes_128_gcm_sha_256`
`ecdhe_rsa_aes_128_gcm_sha_256`
`ecdh_rsa_aes_128_gcm_sha_256`
### cipher suites using SHA384
`rsa_aes_256_gcm_sha_384`
`dhe_rsa_aes_256_gcm_sha_384`
`dhe_dss_aes_256_gcm_sha_384`
`ecdhe_ecdsa_aes_256_sha_384`
`ecdhe_rsa_aes_256_sha_384`
`ecdhe_ecdsa_aes_256_gcm_sha_384`
`ecdhe_rsa_aes_256_gcm_sha_384`
### chacha20-poly1305 cipher suites
`ecdhe_rsa_chacha20_poly1305_sha_256`
`ecdhe_ecdsa_chacha20_poly1305_sha_256`
`dhe_rsa_chacha20_poly1305_sha_256`
## GSKit
Ciphers are internally defined as numeric codes (https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/apis/gsk_attribute_set_buffer.htm),
but libcurl maps them to the following case-insensitive names.
### SSL2 cipher suites (insecure: disabled by default)
`rc2-md5`
`rc4-md5`
`exp-rc2-md5`
`exp-rc4-md5`
`des-cbc-md5`
`des-cbc3-md5`
### SSL3 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-rc2-cbc-md5`
`exp-rc4-md5`
`exp-des-cbc-sha`
`des-cbc3-sha`
### TLS v1.0 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-rc2-cbc-md5`
`exp-rc4-md5`
`exp-des-cbc-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
### TLS v1.1 cipher suites
`null-md5`
`null-sha`
`rc4-md5`
`rc4-sha`
`exp-des-cbc-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
### TLS v1.2 cipher suites
`null-md5`
`null-sha`
`null-sha256`
`rc4-md5`
`rc4-sha`
`des-cbc3-sha`
`aes128-sha`
`aes256-sha`
`aes128-sha256`
`aes256-sha256`
`aes128-gcm-sha256`
`aes256-gcm-sha384`
## WolfSSL
`RC4-SHA`,
`RC4-MD5`,
`DES-CBC3-SHA`,
`AES128-SHA`,
`AES256-SHA`,
`NULL-SHA`,
`NULL-SHA256`,
`DHE-RSA-AES128-SHA`,
`DHE-RSA-AES256-SHA`,
`DHE-PSK-AES256-GCM-SHA384`,
`DHE-PSK-AES128-GCM-SHA256`,
`PSK-AES256-GCM-SHA384`,
`PSK-AES128-GCM-SHA256`,
`DHE-PSK-AES256-CBC-SHA384`,
`DHE-PSK-AES128-CBC-SHA256`,
`PSK-AES256-CBC-SHA384`,
`PSK-AES128-CBC-SHA256`,
`PSK-AES128-CBC-SHA`,
`PSK-AES256-CBC-SHA`,
`DHE-PSK-AES128-CCM`,
`DHE-PSK-AES256-CCM`,
`PSK-AES128-CCM`,
`PSK-AES256-CCM`,
`PSK-AES128-CCM-8`,
`PSK-AES256-CCM-8`,
`DHE-PSK-NULL-SHA384`,
`DHE-PSK-NULL-SHA256`,
`PSK-NULL-SHA384`,
`PSK-NULL-SHA256`,
`PSK-NULL-SHA`,
`HC128-MD5`,
`HC128-SHA`,
`HC128-B2B256`,
`AES128-B2B256`,
`AES256-B2B256`,
`RABBIT-SHA`,
`NTRU-RC4-SHA`,
`NTRU-DES-CBC3-SHA`,
`NTRU-AES128-SHA`,
`NTRU-AES256-SHA`,
`AES128-CCM-8`,
`AES256-CCM-8`,
`ECDHE-ECDSA-AES128-CCM`,
`ECDHE-ECDSA-AES128-CCM-8`,
`ECDHE-ECDSA-AES256-CCM-8`,
`ECDHE-RSA-AES128-SHA`,
`ECDHE-RSA-AES256-SHA`,
`ECDHE-ECDSA-AES128-SHA`,
`ECDHE-ECDSA-AES256-SHA`,
`ECDHE-RSA-RC4-SHA`,
`ECDHE-RSA-DES-CBC3-SHA`,
`ECDHE-ECDSA-RC4-SHA`,
`ECDHE-ECDSA-DES-CBC3-SHA`,
`AES128-SHA256`,
`AES256-SHA256`,
`DHE-RSA-AES128-SHA256`,
`DHE-RSA-AES256-SHA256`,
`ECDH-RSA-AES128-SHA`,
`ECDH-RSA-AES256-SHA`,
`ECDH-ECDSA-AES128-SHA`,
`ECDH-ECDSA-AES256-SHA`,
`ECDH-RSA-RC4-SHA`,
`ECDH-RSA-DES-CBC3-SHA`,
`ECDH-ECDSA-RC4-SHA`,
`ECDH-ECDSA-DES-CBC3-SHA`,
`AES128-GCM-SHA256`,
`AES256-GCM-SHA384`,
`DHE-RSA-AES128-GCM-SHA256`,
`DHE-RSA-AES256-GCM-SHA384`,
`ECDHE-RSA-AES128-GCM-SHA256`,
`ECDHE-RSA-AES256-GCM-SHA384`,
`ECDHE-ECDSA-AES128-GCM-SHA256`,
`ECDHE-ECDSA-AES256-GCM-SHA384`,
`ECDH-RSA-AES128-GCM-SHA256`,
`ECDH-RSA-AES256-GCM-SHA384`,
`ECDH-ECDSA-AES128-GCM-SHA256`,
`ECDH-ECDSA-AES256-GCM-SHA384`,
`CAMELLIA128-SHA`,
`DHE-RSA-CAMELLIA128-SHA`,
`CAMELLIA256-SHA`,
`DHE-RSA-CAMELLIA256-SHA`,
`CAMELLIA128-SHA256`,
`DHE-RSA-CAMELLIA128-SHA256`,
`CAMELLIA256-SHA256`,
`DHE-RSA-CAMELLIA256-SHA256`,
`ECDHE-RSA-AES128-SHA256`,
`ECDHE-ECDSA-AES128-SHA256`,
`ECDH-RSA-AES128-SHA256`,
`ECDH-ECDSA-AES128-SHA256`,
`ECDHE-RSA-AES256-SHA384`,
`ECDHE-ECDSA-AES256-SHA384`,
`ECDH-RSA-AES256-SHA384`,
`ECDH-ECDSA-AES256-SHA384`,
`ECDHE-RSA-CHACHA20-POLY1305`,
`ECDHE-ECDSA-CHACHA20-POLY1305`,
`DHE-RSA-CHACHA20-POLY1305`,
`ECDHE-RSA-CHACHA20-POLY1305-OLD`,
`ECDHE-ECDSA-CHACHA20-POLY1305-OLD`,
`DHE-RSA-CHACHA20-POLY1305-OLD`,
`ADH-AES128-SHA`,
`QSH`,
`RENEGOTIATION-INFO`,
`IDEA-CBC-SHA`,
`ECDHE-ECDSA-NULL-SHA`,
`ECDHE-PSK-NULL-SHA256`,
`ECDHE-PSK-AES128-CBC-SHA256`,
`PSK-CHACHA20-POLY1305`,
`ECDHE-PSK-CHACHA20-POLY1305`,
`DHE-PSK-CHACHA20-POLY1305`,
`EDH-RSA-DES-CBC3-SHA`,
## WinSSL
WinSSL allows the enabling and disabling of encryption algorithms, but not specific ciphersuites. They are defined by Microsoft (https://msdn.microsoft.com/en-us/library/windows/desktop/aa375549(v=vs.85).aspx)
`CALG_MD2`,
`CALG_MD4`,
`CALG_MD5`,
`CALG_SHA`,
`CALG_SHA1`,
`CALG_MAC`,
`CALG_RSA_SIGN`,
`CALG_DSS_SIGN`,
`CALG_NO_SIGN`,
`CALG_RSA_KEYX`,
`CALG_DES`,
`CALG_3DES_112`,
`CALG_3DES`,
`CALG_DESX`,
`CALG_RC2`,
`CALG_RC4`,
`CALG_SEAL`,
`CALG_DH_SF`,
`CALG_DH_EPHEM`,
`CALG_AGREEDKEY_ANY`,
`CALG_HUGHES_MD5`,
`CALG_SKIPJACK`,
`CALG_TEK`,
`CALG_CYLINK_MEK`,
`CALG_SSL3_SHAMD5`,
`CALG_SSL3_MASTER`,
`CALG_SCHANNEL_MASTER_HASH`,
`CALG_SCHANNEL_MAC_KEY`,
`CALG_SCHANNEL_ENC_KEY`,
`CALG_PCT1_MASTER`,
`CALG_SSL2_MASTER`,
`CALG_TLS1_MASTER`,
`CALG_RC5`,
`CALG_HMAC`,
`CALG_TLS1PRF`,
`CALG_HASH_REPLACE_OWF`,
`CALG_AES_128`,
`CALG_AES_192`,
`CALG_AES_256`,
`CALG_AES`,
`CALG_SHA_256`,
`CALG_SHA_384`,
`CALG_SHA_512`,
`CALG_ECDH`,
`CALG_ECMQV`,
`CALG_ECDSA`,
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