diff options
Diffstat (limited to 'lib/ssl/src/tls_v1.erl')
| -rw-r--r-- | lib/ssl/src/tls_v1.erl | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/lib/ssl/src/tls_v1.erl b/lib/ssl/src/tls_v1.erl index 09e378cfeb..0cf6f88782 100644 --- a/lib/ssl/src/tls_v1.erl +++ b/lib/ssl/src/tls_v1.erl @@ -31,7 +31,8 @@ -export([master_secret/4, finished/5, certificate_verify/3, mac_hash/7, setup_keys/8, suites/1, prf/5, - ecc_curves/1, oid_to_enum/1, enum_to_oid/1]). + ecc_curves/1, oid_to_enum/1, enum_to_oid/1, + default_signature_algs/1, signature_algs/2]). %%==================================================================== %% Internal application API @@ -256,6 +257,54 @@ suites(3) -> ] ++ suites(2). + +signature_algs({3, 3}, HashSigns) -> + CryptoSupports = crypto:supports(), + Hashes = proplists:get_value(hashs, CryptoSupports), + PubKeys = proplists:get_value(public_keys, CryptoSupports), + Supported = lists:foldl(fun({Hash, dsa = Sign} = Alg, Acc) -> + case proplists:get_bool(dss, PubKeys) + andalso proplists:get_bool(Hash, Hashes) + andalso is_pair(Hash, Sign, Hashes) + of + true -> + [Alg | Acc]; + false -> + Acc + end; + ({Hash, Sign} = Alg, Acc) -> + case proplists:get_bool(Sign, PubKeys) + andalso proplists:get_bool(Hash, Hashes) + andalso is_pair(Hash, Sign, Hashes) + of + true -> + [Alg | Acc]; + false -> + Acc + end + end, [], HashSigns), + lists:reverse(Supported). + +default_signature_algs({3, 3} = Version) -> + Default = [%% SHA2 + {sha512, ecdsa}, + {sha512, rsa}, + {sha384, ecdsa}, + {sha384, rsa}, + {sha256, ecdsa}, + {sha256, rsa}, + {sha224, ecdsa}, + {sha224, rsa}, + %% SHA + {sha, ecdsa}, + {sha, rsa}, + {sha, dsa}, + %% MD5 + {md5, rsa}], + signature_algs(Version, Default); +default_signature_algs(_) -> + undefined. + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- @@ -340,6 +389,17 @@ finished_label(client) -> finished_label(server) -> <<"server finished">>. +is_pair(sha, dsa, _) -> + true; +is_pair(_, dsa, _) -> + false; +is_pair(Hash, ecdsa, Hashs) -> + AtLeastSha = Hashs -- [md2,md4,md5], + lists:member(Hash, AtLeastSha); +is_pair(Hash, rsa, Hashs) -> + AtLeastMd5 = Hashs -- [md2,md4], + lists:member(Hash, AtLeastMd5). + %% list ECC curves in prefered order ecc_curves(_Minor) -> TLSCurves = [sect571r1,sect571k1,secp521r1,brainpoolP512r1, |