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CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
# Ciphers
CIPHERS.md: Mention the options used to set TLS 1.3 ciphers Closes https://github.com/curl/curl/pull/3159
2018-10-23 12:49:12 +08:00
With curl's options
curl.se: new home Closes #6172
2020-11-04 21:02:01 +08:00
[`CURLOPT_SSL_CIPHER_LIST`](https://curl.se/libcurl/c/CURLOPT_SSL_CIPHER_LIST.html)
CIPHERS.md: Mention the options used to set TLS 1.3 ciphers Closes https://github.com/curl/curl/pull/3159
2018-10-23 12:49:12 +08:00
and
curl.se: new home Closes #6172
2020-11-04 21:02:01 +08:00
[`--ciphers`](https://curl.se/docs/manpage.html#--ciphers)
CIPHERS.md: Mention the options used to set TLS 1.3 ciphers Closes https://github.com/curl/curl/pull/3159
2018-10-23 12:49:12 +08:00
users can control which ciphers to consider when negotiating TLS connections.
schannel: Add TLS 1.3 support - Support TLS 1.3 as the default max TLS version for Windows Server 2022 and Windows 11. - Support specifying TLS 1.3 ciphers via existing option CURLOPT_TLS13_CIPHERS (tool: --tls13-ciphers). Closes https://github.com/curl/curl/pull/8419
2022-07-22 22:45:28 +08:00
TLS 1.3 ciphers are supported since curl 7.61 for OpenSSL 1.1.1+, and since
docs: spellfixes Pointed by the new CI job
2022-09-21 05:30:19 +08:00
curl 7.85 for Schannel with options
curl.se: new home Closes #6172
2020-11-04 21:02:01 +08:00
[`CURLOPT_TLS13_CIPHERS`](https://curl.se/libcurl/c/CURLOPT_TLS13_CIPHERS.html)
CIPHERS.md: Mention the options used to set TLS 1.3 ciphers Closes https://github.com/curl/curl/pull/3159
2018-10-23 12:49:12 +08:00
and
curl.se: new home Closes #6172
2020-11-04 21:02:01 +08:00
[`--tls13-ciphers`](https://curl.se/docs/manpage.html#--tls13-ciphers)
tls13-docs: mention it is only for OpenSSL >= 1.1.1 Reported-by: Jay Satiro Co-authored-by: Jay Satiro Fixes #3938 Closes #3946
2019-05-27 14:01:18 +08:00
. If you are using a different SSL backend you can try setting TLS 1.3 cipher
suites by using the respective regular cipher option.
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
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
docs: fix dead links, remove ECH.md
2021-12-17 06:49:39 +08:00
(based on [OpenSSL docs](https://www.openssl.org/docs/manmaster/man1/openssl-ciphers.html))
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
docs/CIPHERS: mention the colon separation for OpenSSL Bug: #3077
2018-10-02 19:55:36 +08:00
When specifying multiple cipher names, separate them with colon (`:`).
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
### SSL3 cipher suites
CIPHERS.md: backtick the names to show underscores fine
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`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`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
### TLS v1.0 cipher suites
CIPHERS.md: backtick the names to show underscores fine
2016-12-18 23:44:45 +08:00
`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`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
docs: use a space after RFC when spelling out RFC numbers Closes #11382
2023-06-25 16:50:17 +08:00
### AES cipher suites from RFC 3268, extending TLS v1.0
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
CIPHERS.md: backtick the names to show underscores fine
2016-12-18 23:44:45 +08:00
`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`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
docs: use a space after RFC when spelling out RFC numbers Closes #11382
2023-06-25 16:50:17 +08:00
### SEED cipher suites from RFC 4162, extending TLS v1.0
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
CIPHERS.md: backtick the names to show underscores fine
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`SEED-SHA`
`DH-DSS-SEED-SHA`
`DH-RSA-SEED-SHA`
`DHE-DSS-SEED-SHA`
`DHE-RSA-SEED-SHA`
`ADH-SEED-SHA`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
docs: spellfixes Pointed by the new CI job
2022-09-21 05:30:19 +08:00
### GOST cipher suites, extending TLS v1.0
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
CIPHERS.md: backtick the names to show underscores fine
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`GOST94-GOST89-GOST89`
`GOST2001-GOST89-GOST89`
`GOST94-NULL-GOST94`
`GOST2001-NULL-GOST94`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
### Elliptic curve cipher suites
CIPHERS.md: backtick the names to show underscores fine
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`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`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
### TLS v1.2 cipher suites
CIPHERS.md: backtick the names to show underscores fine
2016-12-18 23:44:45 +08:00
`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`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
docs: use a space after RFC when spelling out RFC numbers Closes #11382
2023-06-25 16:50:17 +08:00
### Camellia HMAC-Based cipher suites from RFC 6367, extending TLS v1.2
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
CIPHERS.md: backtick the names to show underscores fine
2016-12-18 23:44:45 +08:00
`ECDHE-ECDSA-CAMELLIA128-SHA256`
`ECDHE-ECDSA-CAMELLIA256-SHA384`
`ECDHE-RSA-CAMELLIA128-SHA256`
`ECDHE-RSA-CAMELLIA256-SHA384`
CIPHERS.md: attempt to document TLS cipher names As the official docs seems really hard to keep track of and link to over time
2016-12-18 08:08:55 +08:00
setopt: add TLS 1.3 ciphersuites Adds CURLOPT_TLS13_CIPHERS and CURLOPT_PROXY_TLS13_CIPHERS. curl: added --tls13-ciphers and --proxy-tls13-ciphers Fixes #2435 Reported-by: zzq1015 on github Closes #2607
2018-05-29 22:12:52 +08:00
### TLS 1.3 cipher suites
CIPHERS.md: Mention the options used to set TLS 1.3 ciphers Closes https://github.com/curl/curl/pull/3159
2018-10-23 12:49:12 +08:00
(Note these ciphers are set with `CURLOPT_TLS13_CIPHERS` and `--tls13-ciphers`)
setopt: add TLS 1.3 ciphersuites Adds CURLOPT_TLS13_CIPHERS and CURLOPT_PROXY_TLS13_CIPHERS. curl: added --tls13-ciphers and --proxy-tls13-ciphers Fixes #2435 Reported-by: zzq1015 on github Closes #2607
2018-05-29 22:12:52 +08:00
docs/CIPHERS: fix the TLS 1.3 cipher names ... picked straight from the OpenSSL man page: https://www.openssl.org/docs/manmaster/man3/SSL_CTX_set_ciphersuites.html Reported-by: Ricky-Tigg on github Bug: #3178
2018-10-26 19:33:34 +08:00
`TLS_AES_256_GCM_SHA384`
`TLS_CHACHA20_POLY1305_SHA256`
`TLS_AES_128_GCM_SHA256`
`TLS_AES_128_CCM_8_SHA256`
`TLS_AES_128_CCM_SHA256`
setopt: add TLS 1.3 ciphersuites Adds CURLOPT_TLS13_CIPHERS and CURLOPT_PROXY_TLS13_CIPHERS. curl: added --tls13-ciphers and --proxy-tls13-ciphers Fixes #2435 Reported-by: zzq1015 on github Closes #2607
2018-05-29 22:12:52 +08:00
wolfssl: support setting cipher list
2017-01-07 06:00:45 +08:00
## 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`,
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
2018-06-02 08:17:40 +08:00
docs: Markdown and misc improvements [ci skip] Approved-by: Daniel Stenberg Closes #3896
2019-05-17 06:11:27 +08:00
## Schannel
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
2018-06-02 08:17:40 +08:00
docs: Markdown and misc improvements [ci skip] Approved-by: Daniel Stenberg Closes #3896
2019-05-17 06:11:27 +08:00
Schannel allows the enabling and disabling of encryption algorithms, but not
schannel: fix user-set legacy algorithms in Windows 10 & 11 - If the user set a legacy algorithm list (CURLOPT_SSL_CIPHER_LIST) then use the SCHANNEL_CRED legacy structure to pass the list to Schannel. - If the user set both a legacy algorithm list and a TLS 1.3 cipher list then abort. Although MS doesn't document it, Schannel will not negotiate TLS 1.3 when SCHANNEL_CRED is used. That means setting a legacy algorithm list limits the user to earlier versions of TLS. Prior to this change, since 8beff435 (precedes 7.85.0), libcurl would ignore legacy algorithms in Windows 10 1809 and later. Reported-by: zhihaoy@users.noreply.github.com Fixes https://github.com/curl/curl/pull/10741 Closes https://github.com/curl/curl/pull/10746
2023-03-19 16:05:08 +08:00
specific cipher suites, prior to TLS 1.3. The algorithms are
docs: Markdown and misc improvements [ci skip] Approved-by: Daniel Stenberg Closes #3896
2019-05-17 06:11:27 +08:00
[defined](https://docs.microsoft.com/windows/desktop/SecCrypto/alg-id) by
Microsoft.
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
2018-06-02 08:17:40 +08:00
schannel: fix user-set legacy algorithms in Windows 10 & 11 - If the user set a legacy algorithm list (CURLOPT_SSL_CIPHER_LIST) then use the SCHANNEL_CRED legacy structure to pass the list to Schannel. - If the user set both a legacy algorithm list and a TLS 1.3 cipher list then abort. Although MS doesn't document it, Schannel will not negotiate TLS 1.3 when SCHANNEL_CRED is used. That means setting a legacy algorithm list limits the user to earlier versions of TLS. Prior to this change, since 8beff435 (precedes 7.85.0), libcurl would ignore legacy algorithms in Windows 10 1809 and later. Reported-by: zhihaoy@users.noreply.github.com Fixes https://github.com/curl/curl/pull/10741 Closes https://github.com/curl/curl/pull/10746
2023-03-19 16:05:08 +08:00
The algorithms below are for TLS 1.2 and earlier. TLS 1.3 is covered in the
next section.
CIPHERS.md: Explain Schannel error SEC_E_ALGORITHM_MISMATCH If the SSL backend is Schannel and the user specifies an Schannel CALG_ that is not supported by the protocol or the server then curl returns CURLE_SSL_CONNECT_ERROR (35) SEC_E_ALGORITHM_MISMATCH. Fixes https://github.com/curl/curl/issues/3389 Closes https://github.com/curl/curl/pull/4106
2019-07-10 19:34:17 +08:00
There is also the case that the selected algorithm is not supported by the
protocol or does not match the ciphers offered by the server during the SSL
negotiation. In this case curl will return error
`CURLE_SSL_CONNECT_ERROR (35) SEC_E_ALGORITHM_MISMATCH`
and the request will fail.
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
2018-06-02 08:17:40 +08:00
`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`,
schannel: support CALG_ECDH_EPHEM algorithm Add support for Ephemeral elliptic curve Diffie-Hellman key exchange algorithm option when selecting ciphers. This became available on the Win10 SDK. Closes https://github.com/curl/curl/pull/3608
2019-02-25 02:20:57 +08:00
`CALG_ECDH_EPHEM`,
schannel: Support strong crypto option - Support enabling strong crypto via optional user cipher list when USE_STRONG_CRYPTO or SCH_USE_STRONG_CRYPTO is in the list. MSDN says SCH_USE_STRONG_CRYPTO "Instructs Schannel to disable known weak cryptographic algorithms, cipher suites, and SSL/TLS protocol versions that may be otherwise enabled for better interoperability." Ref: https://curl.se/mail/lib-2021-02/0066.html Ref: https://curl.se/docs/manpage.html#--ciphers Ref: https://curl.se/libcurl/c/CURLOPT_SSL_CIPHER_LIST.html Ref: https://docs.microsoft.com/en-us/windows/win32/api/schannel/ns-schannel-schannel_cred Closes https://github.com/curl/curl/pull/6734
2021-03-12 19:40:22 +08:00
As of curl 7.77.0, you can also pass `SCH_USE_STRONG_CRYPTO` as a cipher name
docs: spellfixes Pointed by the new CI job
2022-09-21 05:30:19 +08:00
to [constrain the set of available ciphers as specified in the Schannel
schannel: Support strong crypto option - Support enabling strong crypto via optional user cipher list when USE_STRONG_CRYPTO or SCH_USE_STRONG_CRYPTO is in the list. MSDN says SCH_USE_STRONG_CRYPTO "Instructs Schannel to disable known weak cryptographic algorithms, cipher suites, and SSL/TLS protocol versions that may be otherwise enabled for better interoperability." Ref: https://curl.se/mail/lib-2021-02/0066.html Ref: https://curl.se/docs/manpage.html#--ciphers Ref: https://curl.se/libcurl/c/CURLOPT_SSL_CIPHER_LIST.html Ref: https://docs.microsoft.com/en-us/windows/win32/api/schannel/ns-schannel-schannel_cred Closes https://github.com/curl/curl/pull/6734
2021-03-12 19:40:22 +08:00
documentation](https://docs.microsoft.com/en-us/windows/win32/secauthn/tls-cipher-suites-in-windows-server-2022).
docs: grammar proofread, typo fixes (Partially automated) proofread of most of the documentation, leading to various typo fixes. Closes #8353
2022-01-27 09:12:50 +08:00
Note that the supported ciphers in this case follow the OS version, so if you
schannel: Support strong crypto option - Support enabling strong crypto via optional user cipher list when USE_STRONG_CRYPTO or SCH_USE_STRONG_CRYPTO is in the list. MSDN says SCH_USE_STRONG_CRYPTO "Instructs Schannel to disable known weak cryptographic algorithms, cipher suites, and SSL/TLS protocol versions that may be otherwise enabled for better interoperability." Ref: https://curl.se/mail/lib-2021-02/0066.html Ref: https://curl.se/docs/manpage.html#--ciphers Ref: https://curl.se/libcurl/c/CURLOPT_SSL_CIPHER_LIST.html Ref: https://docs.microsoft.com/en-us/windows/win32/api/schannel/ns-schannel-schannel_cred Closes https://github.com/curl/curl/pull/6734
2021-03-12 19:40:22 +08:00
are running an outdated OS you might still be supporting weak ciphers.
BearSSL: add CURLOPT_SSL_CIPHER_LIST support Closes #8477
2021-12-07 01:36:03 +08:00
schannel: Add TLS 1.3 support - Support TLS 1.3 as the default max TLS version for Windows Server 2022 and Windows 11. - Support specifying TLS 1.3 ciphers via existing option CURLOPT_TLS13_CIPHERS (tool: --tls13-ciphers). Closes https://github.com/curl/curl/pull/8419
2022-07-22 22:45:28 +08:00
### TLS 1.3 cipher suites
schannel: fix user-set legacy algorithms in Windows 10 & 11 - If the user set a legacy algorithm list (CURLOPT_SSL_CIPHER_LIST) then use the SCHANNEL_CRED legacy structure to pass the list to Schannel. - If the user set both a legacy algorithm list and a TLS 1.3 cipher list then abort. Although MS doesn't document it, Schannel will not negotiate TLS 1.3 when SCHANNEL_CRED is used. That means setting a legacy algorithm list limits the user to earlier versions of TLS. Prior to this change, since 8beff435 (precedes 7.85.0), libcurl would ignore legacy algorithms in Windows 10 1809 and later. Reported-by: zhihaoy@users.noreply.github.com Fixes https://github.com/curl/curl/pull/10741 Closes https://github.com/curl/curl/pull/10746
2023-03-19 16:05:08 +08:00
You can set TLS 1.3 ciphers for Schannel by using `CURLOPT_TLS13_CIPHERS` or
`--tls13-ciphers` with the names below.
If TLS 1.3 cipher suites are set then libcurl will add or restrict Schannel TLS
1.3 algorithms automatically. Essentially, libcurl is emulating support for
individual TLS 1.3 cipher suites since Schannel does not support it directly.
schannel: Add TLS 1.3 support - Support TLS 1.3 as the default max TLS version for Windows Server 2022 and Windows 11. - Support specifying TLS 1.3 ciphers via existing option CURLOPT_TLS13_CIPHERS (tool: --tls13-ciphers). Closes https://github.com/curl/curl/pull/8419
2022-07-22 22:45:28 +08:00
`TLS_AES_256_GCM_SHA384`
`TLS_AES_128_GCM_SHA256`
`TLS_CHACHA20_POLY1305_SHA256`
`TLS_AES_128_CCM_8_SHA256`
`TLS_AES_128_CCM_SHA256`
GHA: add a job scanning for "bad words" in markdown This means words, phrases or things we have decided not to use - words that are spelled right according to the dictionary but we want to avoid. In the name of consistency and better documentation. Closes #12764
2024-01-23 22:12:09 +08:00
Note if you set TLS 1.3 ciphers without also setting the minimum TLS version
to 1.3 then it is possible Schannel may negotiate an earlier TLS version and
cipher suite if your libcurl and OS settings allow it. You can set the minimum
TLS version by using `CURLOPT_SSLVERSION` or `--tlsv1.3`.
schannel: fix user-set legacy algorithms in Windows 10 & 11 - If the user set a legacy algorithm list (CURLOPT_SSL_CIPHER_LIST) then use the SCHANNEL_CRED legacy structure to pass the list to Schannel. - If the user set both a legacy algorithm list and a TLS 1.3 cipher list then abort. Although MS doesn't document it, Schannel will not negotiate TLS 1.3 when SCHANNEL_CRED is used. That means setting a legacy algorithm list limits the user to earlier versions of TLS. Prior to this change, since 8beff435 (precedes 7.85.0), libcurl would ignore legacy algorithms in Windows 10 1809 and later. Reported-by: zhihaoy@users.noreply.github.com Fixes https://github.com/curl/curl/pull/10741 Closes https://github.com/curl/curl/pull/10746
2023-03-19 16:05:08 +08:00
BearSSL: add CURLOPT_SSL_CIPHER_LIST support Closes #8477
2021-12-07 01:36:03 +08:00
## BearSSL
BearSSL ciphers can be specified by either the OpenSSL name (`ECDHE-RSA-AES128-GCM-SHA256`) or the IANA name (`TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256`).
Since BearSSL 0.1:
`DES-CBC3-SHA`
`AES128-SHA`
`AES256-SHA`
`AES128-SHA256`
`AES256-SHA256`
`AES128-GCM-SHA256`
`AES256-GCM-SHA384`
`ECDH-ECDSA-DES-CBC3-SHA`
`ECDH-ECDSA-AES128-SHA`
`ECDH-ECDSA-AES256-SHA`
`ECDHE-ECDSA-DES-CBC3-SHA`
`ECDHE-ECDSA-AES128-SHA`
`ECDHE-ECDSA-AES256-SHA`
`ECDH-RSA-DES-CBC3-SHA`
`ECDH-RSA-AES128-SHA`
`ECDH-RSA-AES256-SHA`
`ECDHE-RSA-DES-CBC3-SHA`
`ECDHE-RSA-AES128-SHA`
`ECDHE-RSA-AES256-SHA`
`ECDHE-ECDSA-AES128-SHA256`
`ECDHE-ECDSA-AES256-SHA384`
`ECDH-ECDSA-AES128-SHA256`
`ECDH-ECDSA-AES256-SHA384`
`ECDHE-RSA-AES128-SHA256`
`ECDHE-RSA-AES256-SHA384`
`ECDH-RSA-AES128-SHA256`
`ECDH-RSA-AES256-SHA384`
`ECDHE-ECDSA-AES128-GCM-SHA256`
`ECDHE-ECDSA-AES256-GCM-SHA384`
`ECDH-ECDSA-AES128-GCM-SHA256`
`ECDH-ECDSA-AES256-GCM-SHA384`
`ECDHE-RSA-AES128-GCM-SHA256`
`ECDHE-RSA-AES256-GCM-SHA384`
`ECDH-RSA-AES128-GCM-SHA256`
`ECDH-RSA-AES256-GCM-SHA384`
Since BearSSL 0.2:
`ECDHE-RSA-CHACHA20-POLY1305`
`ECDHE-ECDSA-CHACHA20-POLY1305`
Since BearSSL 0.6:
`AES128-CCM`
`AES256-CCM`
`AES128-CCM8`
`AES256-CCM8`
`ECDHE-ECDSA-AES128-CCM`
`ECDHE-ECDSA-AES256-CCM`
`ECDHE-ECDSA-AES128-CCM8`
`ECDHE-ECDSA-AES256-CCM8`
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