diff options
Diffstat (limited to 'lib/ssl/src/ssl_record.erl')
| -rw-r--r-- | lib/ssl/src/ssl_record.erl | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/lib/ssl/src/ssl_record.erl b/lib/ssl/src/ssl_record.erl index 3bfcff5517..8e93ce4634 100644 --- a/lib/ssl/src/ssl_record.erl +++ b/lib/ssl/src/ssl_record.erl @@ -449,9 +449,9 @@ supported_protocol_versions() -> end, case application:get_env(ssl, protocol_version) of undefined -> - lists:map(Fun, ?DEFAULT_SUPPORTED_VERSIONS); + lists:map(Fun, supported_protocol_versions([])); {ok, []} -> - lists:map(Fun, ?DEFAULT_SUPPORTED_VERSIONS); + lists:map(Fun, supported_protocol_versions([])); {ok, Vsns} when is_list(Vsns) -> Versions = lists:filter(fun is_acceptable_version/1, lists:map(Fun, Vsns)), supported_protocol_versions(Versions); @@ -461,7 +461,16 @@ supported_protocol_versions() -> end. supported_protocol_versions([]) -> - ?DEFAULT_SUPPORTED_VERSIONS; + Vsns = case sufficient_tlsv1_2_crypto_support() of + true -> + %%?ALL_SUPPORTED_VERSIONS; %% Add TlS-1.2 as default in R16 + ?DEFAULT_SUPPORTED_VERSIONS; + false -> + ?DEFAULT_SUPPORTED_VERSIONS + end, + application:set_env(ssl, protocol_version, Vsns), + Vsns; + supported_protocol_versions([_|_] = Vsns) -> Vsns. @@ -694,3 +703,14 @@ mac_hash({3, N} = Version, MacAlg, MacSecret, SeqNo, Type, Length, Fragment) when N =:= 1; N =:= 2; N =:= 3 -> ssl_tls1:mac_hash(MacAlg, MacSecret, SeqNo, Type, Version, Length, Fragment). + +sufficient_tlsv1_2_crypto_support() -> + Data = "Sampl", + Data2 = "e #1", + Key = <<0,1,2,3,16,17,18,19,32,33,34,35,48,49,50,51,4,5,6,7,20,21,22,23,36,37,38,39, + 52,53,54,55,8,9,10,11,24,25,26,27,40,41,42,43,56,57,58,59>>, + try + crypto:sha256_mac(Key, lists:flatten([Data, Data2])), + true + catch _:_ -> false + end. |