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-rw-r--r--lib/ssl/src/ssl_handshake.erl127
1 files changed, 92 insertions, 35 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 1108edcf48..94ffd180c5 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -73,7 +73,8 @@
]).
%% MISC
--export([select_version/3, prf/5, select_hashsign/2, select_cert_hashsign/3,
+-export([select_version/3, prf/5, select_hashsign/3,
+ select_hashsign_algs/2, select_hashsign_algs/3,
premaster_secret/2, premaster_secret/3, premaster_secret/4]).
%%====================================================================
@@ -200,13 +201,13 @@ client_certificate_verify(OwnCert, MasterSecret, Version,
end.
%%--------------------------------------------------------------------
--spec certificate_request(ssl_cipher:erl_cipher_suite(), db_handle(), certdb_ref(), ssl_record:ssl_version()) ->
+-spec certificate_request(ssl_cipher:cipher_suite(), db_handle(), certdb_ref(), ssl_record:ssl_version()) ->
#certificate_request{}.
%%
%% Description: Creates a certificate_request message, called by the server.
%%--------------------------------------------------------------------
certificate_request(CipherSuite, CertDbHandle, CertDbRef, Version) ->
- Types = certificate_types(CipherSuite),
+ Types = certificate_types(ssl_cipher:suite_definition(CipherSuite), Version),
HashSigns = advertised_hash_signs(Version),
Authorities = certificate_authorities(CertDbHandle, CertDbRef),
#certificate_request{
@@ -590,23 +591,25 @@ prf({3,1}, Secret, Label, Seed, WantedLength) ->
{ok, tls_v1:prf(?MD5SHA, Secret, Label, Seed, WantedLength)};
prf({3,_N}, Secret, Label, Seed, WantedLength) ->
{ok, tls_v1:prf(?SHA256, Secret, Label, Seed, WantedLength)}.
+
+
%%--------------------------------------------------------------------
--spec select_hashsign(#hash_sign_algos{}| undefined, undefined | binary()) ->
- [{atom(), atom()}] | undefined.
+-spec select_hashsign(#hash_sign_algos{}| undefined, undefined | binary(), ssl_record:ssl_version()) ->
+ {atom(), atom()} | undefined.
%%
%% Description:
%%--------------------------------------------------------------------
-select_hashsign(_, undefined) ->
+select_hashsign(_, undefined, _Version) ->
{null, anon};
-select_hashsign(undefined, Cert) ->
+select_hashsign(undefined, Cert, Version) ->
#'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
#'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
- select_cert_hashsign(undefined, Algo, {undefined, undefined});
-select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert) ->
+ select_hashsign_algs(undefined, Algo, Version);
+select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, Version) ->
#'OTPCertificate'{tbsCertificate = TBSCert} =public_key:pkix_decode_cert(Cert, otp),
#'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
- DefaultHashSign = {_, Sign} = select_cert_hashsign(undefined, Algo, {undefined, undefined}),
+ DefaultHashSign = {_, Sign} = select_hashsign_algs(undefined, Algo, Version),
case lists:filter(fun({sha, dsa}) ->
true;
({_, dsa}) ->
@@ -622,26 +625,59 @@ select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert) ->
[HashSign| _] ->
HashSign
end.
+
%%--------------------------------------------------------------------
--spec select_cert_hashsign(#hash_sign_algos{}| undefined, oid(), ssl_record:ssl_version() | {undefined, undefined}) ->
+-spec select_hashsign_algs(#hash_sign_algos{}| undefined, oid(), ssl_record:ssl_version()) ->
{atom(), atom()}.
+%% Description: For TLS 1.2 hash function and signature algorithm pairs can be
+%% negotiated with the signature_algorithms extension,
+%% for previous versions always use appropriate defaults.
+%% RFC 5246, Sect. 7.4.1.4.1. Signature Algorithms
+%% If the client does not send the signature_algorithms extension, the
+%% server MUST do the following: (e.i defaults for TLS 1.2)
+%%
+%% - If the negotiated key exchange algorithm is one of (RSA, DHE_RSA,
+%% DH_RSA, RSA_PSK, ECDH_RSA, ECDHE_RSA), behave as if client had
+%% sent the value {sha1,rsa}.
+%%
+%% - If the negotiated key exchange algorithm is one of (DHE_DSS,
+%% DH_DSS), behave as if the client had sent the value {sha1,dsa}.
%%
-%% Description: For TLS 1.2 selected cert_hash_sign will be recived
-%% in the handshake message, for previous versions use appropriate defaults.
-%% This function is also used by select_hashsign to extract
-%% the alogrithm of the server cert key.
+%% - If the negotiated key exchange algorithm is one of (ECDH_ECDSA,
+%% ECDHE_ECDSA), behave as if the client had sent value {sha1,ecdsa}.
+
%%--------------------------------------------------------------------
-select_cert_hashsign(HashSign, _, {Major, Minor}) when HashSign =/= undefined andalso
+select_hashsign_algs(HashSign, _, {Major, Minor}) when HashSign =/= undefined andalso
Major >= 3 andalso Minor >= 3 ->
HashSign;
-select_cert_hashsign(undefined,?'id-ecPublicKey', _) ->
+select_hashsign_algs(undefined, ?rsaEncryption, {Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
+ {sha, rsa};
+select_hashsign_algs(undefined,?'id-ecPublicKey', _) ->
{sha, ecdsa};
-select_cert_hashsign(undefined, ?rsaEncryption, _) ->
+select_hashsign_algs(undefined, ?rsaEncryption, _) ->
{md5sha, rsa};
-select_cert_hashsign(undefined, ?'id-dsa', _) ->
+select_hashsign_algs(undefined, ?'id-dsa', _) ->
{sha, dsa}.
+-spec select_hashsign_algs(atom(), ssl_record:ssl_version()) -> {atom(), atom()}.
+%% Wrap function to keep the knowledge of the default values in
+%% one place only
+select_hashsign_algs(Alg, Version) when (Alg == rsa orelse
+ Alg == dhe_rsa orelse
+ Alg == dh_rsa orelse
+ Alg == ecdhe_rsa orelse
+ Alg == ecdh_rsa orelse
+ Alg == srp_rsa) ->
+ select_hashsign_algs(undefined, ?rsaEncryption, Version);
+select_hashsign_algs(Alg, Version) when (Alg == dhe_dss orelse
+ Alg == dh_dss orelse
+ Alg == srp_dss) ->
+ select_hashsign_algs(undefined, ?'id-dsa', Version);
+select_hashsign_algs(Alg, Version) when (Alg == ecdhe_ecdsa orelse
+ Alg == ecdh_ecdsa) ->
+ select_hashsign_algs(undefined, ?'id-ecPublicKey', Version).
+
%%--------------------------------------------------------------------
-spec master_secret(atom(), ssl_record:ssl_version(), #session{} | binary(), #connection_states{},
client | server) -> {binary(), #connection_states{}} | #alert{}.
@@ -1017,12 +1053,9 @@ decode_suites('3_bytes', Dec) ->
%%-------------Cipeher suite handling --------------------------------
available_suites(UserSuites, Version) ->
- case UserSuites of
- [] ->
- ssl_cipher:suites(Version);
- _ ->
- UserSuites
- end.
+ lists:filtermap(fun(Suite) ->
+ lists:member(Suite, ssl_cipher:all_suites(Version))
+ end, UserSuites).
available_suites(ServerCert, UserSuites, Version, Curve) ->
ssl_cipher:filter(ServerCert, available_suites(UserSuites, Version))
@@ -1065,19 +1098,31 @@ supported_ecc(_) ->
%%-------------certificate handling --------------------------------
-certificate_types({KeyExchange, _, _, _})
- when KeyExchange == rsa;
- KeyExchange == dhe_dss;
- KeyExchange == dhe_rsa;
- KeyExchange == ecdhe_rsa ->
- <<?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>;
+certificate_types(_, {N, M}) when N >= 3 andalso M >= 3 ->
+ case proplists:get_bool(ecdsa,
+ proplists:get_value(public_keys, crypto:supports())) of
+ true ->
+ <<?BYTE(?ECDSA_SIGN), ?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>;
+ false ->
+ <<?BYTE(?RSA_SIGN), ?BYTE(?DSS_SIGN)>>
+ end;
+
+certificate_types({KeyExchange, _, _, _}, _) when KeyExchange == rsa;
+ KeyExchange == dhe_rsa;
+ KeyExchange == ecdhe_rsa ->
+ <<?BYTE(?RSA_SIGN)>>;
+
+certificate_types({KeyExchange, _, _, _}, _) when KeyExchange == dhe_dss;
+ KeyExchange == srp_dss ->
+ <<?BYTE(?DSS_SIGN)>>;
-certificate_types({KeyExchange, _, _, _})
- when KeyExchange == dh_ecdsa;
- KeyExchange == dhe_ecdsa ->
+certificate_types({KeyExchange, _, _, _}, _) when KeyExchange == dh_ecdsa;
+ KeyExchange == dhe_ecdsa;
+ KeyExchange == ecdh_ecdsa;
+ KeyExchange == ecdhe_ecdsa ->
<<?BYTE(?ECDSA_SIGN)>>;
-certificate_types(_) ->
+certificate_types(_, _) ->
<<?BYTE(?RSA_SIGN)>>.
certificate_authorities(CertDbHandle, CertDbRef) ->
@@ -1686,6 +1731,11 @@ dec_hello_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
dec_hello_extensions(Rest, Acc#hello_extensions{ec_point_formats =
#ec_point_formats{ec_point_format_list =
ECPointFormats}});
+
+dec_hello_extensions(<<?UINT16(?SNI_EXT), ?UINT16(Len),
+ ExtData:Len/binary, Rest/binary>>, Acc) ->
+ <<?UINT16(_), NameList/binary>> = ExtData,
+ dec_hello_extensions(Rest, Acc#hello_extensions{sni = dec_sni(NameList)});
%% Ignore data following the ClientHello (i.e.,
%% extensions) if not understood.
@@ -1698,6 +1748,13 @@ dec_hello_extensions(_, Acc) ->
dec_hashsign(<<?BYTE(HashAlgo), ?BYTE(SignAlgo)>>) ->
{ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)}.
+%% Ignore unknown names (only host_name is supported)
+dec_sni(<<?BYTE(?SNI_NAMETYPE_HOST_NAME), ?UINT16(Len),
+ HostName:Len/binary, _/binary>>) ->
+ #sni{hostname = binary_to_list(HostName)};
+dec_sni(<<?BYTE(_), ?UINT16(Len), _:Len, Rest/binary>>) -> dec_sni(Rest);
+dec_sni(_) -> undefined.
+
decode_next_protocols({next_protocol_negotiation, Protocols}) ->
decode_next_protocols(Protocols, []).
decode_next_protocols(<<>>, Acc) ->
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-13 22:55:57 +0000