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-rw-r--r--lib/ssl/src/dtls_connection.erl7
-rw-r--r--lib/ssl/src/dtls_handshake.erl5
-rw-r--r--lib/ssl/src/ssl.erl25
-rw-r--r--lib/ssl/src/ssl_cipher.erl3
-rw-r--r--lib/ssl/src/ssl_connection.erl52
-rw-r--r--lib/ssl/src/ssl_handshake.erl202
-rw-r--r--lib/ssl/src/ssl_handshake.hrl2
-rw-r--r--lib/ssl/src/ssl_internal.hrl3
-rw-r--r--lib/ssl/src/tls_connection.erl23
-rw-r--r--lib/ssl/src/tls_handshake.erl48
-rw-r--r--lib/ssl/src/tls_v1.erl62
11 files changed, 297 insertions, 135 deletions
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index 153d3fef48..e490de7eeb 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -196,8 +196,7 @@ hello(start, #state{host = Host, port = Port, role = client,
{Record, State} = next_record(State1),
next_state(hello, hello, Record, State);
-hello(Hello = #client_hello{client_version = ClientVersion,
- extensions = #hello_extensions{hash_signs = HashSigns}},
+hello(Hello = #client_hello{client_version = ClientVersion},
State = #state{connection_states = ConnectionStates0,
port = Port, session = #session{own_certificate = Cert} = Session0,
renegotiation = {Renegotiation, _},
@@ -209,9 +208,7 @@ hello(Hello = #client_hello{client_version = ClientVersion,
{Version, {Type, Session},
ConnectionStates,
#hello_extensions{ec_point_formats = EcPointFormats,
- elliptic_curves = EllipticCurves} = ServerHelloExt} ->
- HashSign = ssl_handshake:select_hashsign(HashSigns, Cert,
- dtls_v1:corresponding_tls_version(Version)),
+ elliptic_curves = EllipticCurves} = ServerHelloExt, HashSign} ->
ssl_connection:hello({common_client_hello, Type, ServerHelloExt, HashSign},
State#state{connection_states = ConnectionStates,
negotiated_version = Version,
diff --git a/lib/ssl/src/dtls_handshake.erl b/lib/ssl/src/dtls_handshake.erl
index 22c0ce7a13..50c84b712f 100644
--- a/lib/ssl/src/dtls_handshake.erl
+++ b/lib/ssl/src/dtls_handshake.erl
@@ -94,7 +94,10 @@ hello(#server_hello{server_version = Version, random = Random,
hello(#client_hello{client_version = ClientVersion}, _Options, {_,_,_,_,ConnectionStates,_}, _Renegotiation) ->
%% Return correct typ to make dialyzer happy until we have time to make the real imp.
- {ClientVersion, {new, #session{}}, ConnectionStates, #hello_extensions{}}.
+ HashSigns = tls_v1:default_signature_algs(dtls_v1:corresponding_tls_version(ClientVersion)),
+ {ClientVersion, {new, #session{}}, ConnectionStates, #hello_extensions{},
+ %% Placeholder for real hasign handling
+ hd(HashSigns)}.
%% hello(Address, Port,
%% #ssl_tls{epoch = _Epoch, sequence_number = _Seq,
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 780bef5877..9045f8fef9 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -700,6 +700,10 @@ handle_options(Opts0, Role) ->
srp_identity = handle_option(srp_identity, Opts, undefined),
ciphers = handle_cipher_option(proplists:get_value(ciphers, Opts, []),
RecordCb:highest_protocol_version(Versions)),
+ signature_algs = handle_hashsigns_option(proplists:get_value(signature_algs, Opts,
+ default_option_role(server,
+ tls_v1:default_signature_algs(Versions), Role)),
+ RecordCb:highest_protocol_version(Versions)),
%% Server side option
reuse_session = handle_option(reuse_session, Opts, ReuseSessionFun),
reuse_sessions = handle_option(reuse_sessions, Opts, true),
@@ -749,7 +753,7 @@ handle_options(Opts0, Role) ->
alpn_preferred_protocols, next_protocols_advertised,
client_preferred_next_protocols, log_alert,
server_name_indication, honor_cipher_order, padding_check, crl_check, crl_cache,
- fallback],
+ fallback, signature_algs],
SockOpts = lists:foldl(fun(Key, PropList) ->
proplists:delete(Key, PropList)
@@ -989,6 +993,18 @@ validate_option(crl_cache, {Cb, {_Handle, Options}} = Value) when is_atom(Cb) an
validate_option(Opt, Value) ->
throw({error, {options, {Opt, Value}}}).
+handle_hashsigns_option(Value, {Major, Minor} = Version) when is_list(Value)
+ andalso Major >= 3 andalso Minor >= 3->
+ case tls_v1:signature_algs(Version, Value) of
+ [] ->
+ throw({error, {options, no_supported_algorithms, {signature_algs, Value}}});
+ _ ->
+ Value
+ end;
+handle_hashsigns_option(_, {Major, Minor} = Version) when Major >= 3 andalso Minor >= 3->
+ handle_hashsigns_option(tls_v1:default_signature_algs(Version), Version);
+handle_hashsigns_option(_, _Version) ->
+ undefined.
validate_options([]) ->
[];
@@ -1285,6 +1301,13 @@ new_ssl_options([{server_name_indication, Value} | Rest], #ssl_options{} = Opts,
new_ssl_options(Rest, Opts#ssl_options{server_name_indication = validate_option(server_name_indication, Value)}, RecordCB);
new_ssl_options([{honor_cipher_order, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
new_ssl_options(Rest, Opts#ssl_options{honor_cipher_order = validate_option(honor_cipher_order, Value)}, RecordCB);
+new_ssl_options([{signature_algs, Value} | Rest], #ssl_options{} = Opts, RecordCB) ->
+ new_ssl_options(Rest,
+ Opts#ssl_options{signature_algs =
+ handle_hashsigns_option(Value,
+ RecordCB:highest_protocol_version())},
+ RecordCB);
+
new_ssl_options([{Key, Value} | _Rest], #ssl_options{}, _) ->
throw({error, {options, {Key, Value}}}).
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index d737f74aa3..cbe3a2a056 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -43,11 +43,12 @@
-export_type([cipher_suite/0,
erl_cipher_suite/0, openssl_cipher_suite/0,
- key_algo/0]).
+ hash/0, key_algo/0, sign_algo/0]).
-type cipher() :: null |rc4_128 | idea_cbc | des40_cbc | des_cbc | '3des_ede_cbc'
| aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305.
-type hash() :: null | sha | md5 | sha224 | sha256 | sha384 | sha512.
+-type sign_algo() :: rsa | dsa | ecdsa.
-type key_algo() :: null | rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa| ecdh_ecdsa | ecdh_rsa| srp_rsa| srp_dss | psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon.
-type erl_cipher_suite() :: {key_algo(), cipher(), hash()} % Pre TLS 1.2
%% TLS 1.2, internally PRE TLS 1.2 will use default_prf
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index ec7d086934..f774873269 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -304,13 +304,9 @@ hello(#hello_request{}, #state{role = client} = State0, Connection) ->
{Record, State} = Connection:next_record(State0),
Connection:next_state(hello, hello, Record, State);
-hello({common_client_hello, Type, ServerHelloExt, NegotiatedHashSign},
+hello({common_client_hello, Type, ServerHelloExt},
State, Connection) ->
- do_server_hello(Type, ServerHelloExt,
- %% Note NegotiatedHashSign is only negotiated for real if
- %% if TLS version is at least TLS-1.2
- State#state{hashsign_algorithm = NegotiatedHashSign}, Connection);
-
+ do_server_hello(Type, ServerHelloExt, State, Connection);
hello(timeout, State, _) ->
{next_state, hello, State, hibernate};
@@ -442,7 +438,8 @@ certify(#server_key_exchange{exchange_keys = Keys},
Alg == srp_dss; Alg == srp_rsa; Alg == srp_anon ->
Params = ssl_handshake:decode_server_key(Keys, Alg, Version),
- HashSign = negotiated_hashsign(Params#server_key_params.hashsign, Alg, Version),
+ %% Use negotiated value if TLS-1.2 otherwhise return default
+ HashSign = negotiated_hashsign(Params#server_key_params.hashsign, Alg, PubKeyInfo, Version),
case is_anonymous(Alg) of
true ->
calculate_secret(Params#server_key_params.params,
@@ -464,11 +461,18 @@ certify(#server_key_exchange{} = Msg,
certify(#certificate_request{hashsign_algorithms = HashSigns},
#state{session = #session{own_certificate = Cert},
- negotiated_version = Version} = State0, Connection) ->
- HashSign = ssl_handshake:select_hashsign(HashSigns, Cert, Version),
- {Record, State} = Connection:next_record(State0#state{client_certificate_requested = true}),
- Connection:next_state(certify, certify, Record,
- State#state{cert_hashsign_algorithm = HashSign});
+ key_algorithm = KeyExAlg,
+ ssl_options = #ssl_options{signature_algs = SupportedHashSigns},
+ negotiated_version = Version} = State0, Connection) ->
+
+ case ssl_handshake:select_hashsign(HashSigns, Cert, KeyExAlg, SupportedHashSigns, Version) of
+ #alert {} = Alert ->
+ Connection:handle_own_alert(Alert, Version, certify, State0);
+ NegotiatedHashSign ->
+ {Record, State} = Connection:next_record(State0#state{client_certificate_requested = true}),
+ Connection:next_state(certify, certify, Record,
+ State#state{cert_hashsign_algorithm = NegotiatedHashSign})
+ end;
%% PSK and RSA_PSK might bypass the Server-Key-Exchange
certify(#server_hello_done{},
@@ -576,13 +580,15 @@ cipher(#hello_request{}, State0, Connection) ->
cipher(#certificate_verify{signature = Signature, hashsign_algorithm = CertHashSign},
#state{role = server,
- public_key_info = {Algo, _, _} =PublicKeyInfo,
+ key_algorithm = KexAlg,
+ public_key_info = PublicKeyInfo,
negotiated_version = Version,
session = #session{master_secret = MasterSecret},
tls_handshake_history = Handshake
} = State0, Connection) ->
-
- HashSign = ssl_handshake:select_hashsign_algs(CertHashSign, Algo, Version),
+
+ %% Use negotiated value if TLS-1.2 otherwhise return default
+ HashSign = negotiated_hashsign(CertHashSign, KexAlg, PublicKeyInfo, Version),
case ssl_handshake:certificate_verify(Signature, PublicKeyInfo,
Version, HashSign, MasterSecret, Handshake) of
valid ->
@@ -1448,7 +1454,8 @@ rsa_psk_key_exchange(Version, PskIdentity, PremasterSecret, PublicKeyInfo = {Alg
rsa_psk_key_exchange(_, _, _, _) ->
throw (?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE)).
-request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer},
+request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer,
+ signature_algs = SupportedHashSigns},
connection_states = ConnectionStates0,
cert_db = CertDbHandle,
cert_db_ref = CertDbRef,
@@ -1456,7 +1463,9 @@ request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer},
#connection_state{security_parameters =
#security_parameters{cipher_suite = CipherSuite}} =
ssl_record:pending_connection_state(ConnectionStates0, read),
- Msg = ssl_handshake:certificate_request(CipherSuite, CertDbHandle, CertDbRef, Version),
+ HashSigns = ssl_handshake:available_signature_algs(SupportedHashSigns, Version, [Version]),
+ Msg = ssl_handshake:certificate_request(CipherSuite, CertDbHandle, CertDbRef,
+ HashSigns, Version),
State = Connection:send_handshake(Msg, State0),
State#state{client_certificate_requested = true};
@@ -1881,15 +1890,16 @@ make_premaster_secret({MajVer, MinVer}, rsa) ->
make_premaster_secret(_, _) ->
undefined.
-negotiated_hashsign(undefined, Alg, Version) ->
+negotiated_hashsign(undefined, KexAlg, PubKeyInfo, Version) ->
%% Not negotiated choose default
- case is_anonymous(Alg) of
+ case is_anonymous(KexAlg) of
true ->
{null, anon};
false ->
- ssl_handshake:select_hashsign_algs(Alg, Version)
+ {PubAlg, _, _} = PubKeyInfo,
+ ssl_handshake:select_hashsign_algs(undefined, PubAlg, Version)
end;
-negotiated_hashsign(HashSign = {_, _}, _, _) ->
+negotiated_hashsign(HashSign = {_, _}, _, _, _) ->
HashSign.
ssl_options_list(SslOptions) ->
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index e98073080a..644903cf4b 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -46,7 +46,7 @@
%% Handshake messages
-export([hello_request/0, server_hello/4, server_hello_done/0,
- certificate/4, certificate_request/4, key_exchange/3,
+ certificate/4, certificate_request/5, key_exchange/3,
finished/5, next_protocol/1]).
%% Handle handshake messages
@@ -64,8 +64,8 @@
]).
%% Cipher suites handling
--export([available_suites/2, cipher_suites/2,
- select_session/10, supported_ecc/1]).
+-export([available_suites/2, available_signature_algs/3, cipher_suites/2,
+ select_session/11, supported_ecc/1]).
%% Extensions handling
-export([client_hello_extensions/6,
@@ -74,8 +74,8 @@
]).
%% MISC
--export([select_version/3, prf/5, select_hashsign/3,
- select_hashsign_algs/2, select_hashsign_algs/3,
+-export([select_version/3, prf/5, select_hashsign/5,
+ select_hashsign_algs/3,
premaster_secret/2, premaster_secret/3, premaster_secret/4]).
%%====================================================================
@@ -120,7 +120,8 @@ server_hello(SessionId, Version, ConnectionStates, Extensions) ->
server_hello_done() ->
#server_hello_done{}.
-client_hello_extensions(Host, Version, CipherSuites, SslOpts, ConnectionStates, Renegotiation) ->
+client_hello_extensions(Host, Version, CipherSuites,
+ #ssl_options{signature_algs = SupportedHashSigns, versions = AllVersions} = SslOpts, ConnectionStates, Renegotiation) ->
{EcPointFormats, EllipticCurves} =
case advertises_ec_ciphers(lists:map(fun ssl_cipher:suite_definition/1, CipherSuites)) of
true ->
@@ -134,7 +135,7 @@ client_hello_extensions(Host, Version, CipherSuites, SslOpts, ConnectionStates,
renegotiation_info = renegotiation_info(tls_record, client,
ConnectionStates, Renegotiation),
srp = SRP,
- hash_signs = advertised_hash_signs(Version),
+ signature_algs = available_signature_algs(SupportedHashSigns, Version, AllVersions),
ec_point_formats = EcPointFormats,
elliptic_curves = EllipticCurves,
alpn = encode_alpn(SslOpts#ssl_options.alpn_advertised_protocols, Renegotiation),
@@ -203,14 +204,14 @@ client_certificate_verify(OwnCert, MasterSecret, Version,
end.
%%--------------------------------------------------------------------
--spec certificate_request(ssl_cipher:cipher_suite(), db_handle(), certdb_ref(), ssl_record:ssl_version()) ->
- #certificate_request{}.
+-spec certificate_request(ssl_cipher:cipher_suite(), db_handle(),
+ certdb_ref(), #hash_sign_algos{}, ssl_record:ssl_version()) ->
+ #certificate_request{}.
%%
%% Description: Creates a certificate_request message, called by the server.
%%--------------------------------------------------------------------
-certificate_request(CipherSuite, CertDbHandle, CertDbRef, Version) ->
+certificate_request(CipherSuite, CertDbHandle, CertDbRef, HashSigns, Version) ->
Types = certificate_types(ssl_cipher:suite_definition(CipherSuite), Version),
- HashSigns = advertised_hash_signs(Version),
Authorities = certificate_authorities(CertDbHandle, CertDbRef),
#certificate_request{
certificate_types = Types,
@@ -351,6 +352,9 @@ verify_server_key(#server_key_params{params_bin = EncParams,
%%
%% Description: Checks that the certificate_verify message is valid.
%%--------------------------------------------------------------------
+certificate_verify(_, _, _, undefined, _, _) ->
+ ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE);
+
certificate_verify(Signature, PublicKeyInfo, Version,
HashSign = {HashAlgo, _}, MasterSecret, {_, Handshake}) ->
Hash = calc_certificate_verify(Version, HashAlgo, MasterSecret, Handshake),
@@ -379,10 +383,11 @@ verify_signature(_Version, Hash, _HashAlgo, Signature, {?rsaEncryption, PubKey,
end;
verify_signature(_Version, Hash, {HashAlgo, dsa}, Signature, {?'id-dsa', PublicKey, PublicKeyParams}) ->
public_key:verify({digest, Hash}, HashAlgo, Signature, {PublicKey, PublicKeyParams});
-verify_signature(_Version, Hash, {HashAlgo, ecdsa}, Signature,
+verify_signature(_, Hash, {HashAlgo, _SignAlg}, Signature,
{?'id-ecPublicKey', PublicKey, PublicKeyParams}) ->
public_key:verify({digest, Hash}, HashAlgo, Signature, {PublicKey, PublicKeyParams}).
+
%%--------------------------------------------------------------------
-spec certify(#certificate{}, db_handle(), certdb_ref(), integer() | nolimit,
verify_peer | verify_none, {fun(), term}, fun(), term(), term(),
@@ -573,43 +578,46 @@ prf({3,_N}, Secret, Label, Seed, WantedLength) ->
%%--------------------------------------------------------------------
--spec select_hashsign(#hash_sign_algos{}| undefined, undefined | binary(), ssl_record:ssl_version()) ->
- {atom(), atom()} | undefined.
+-spec select_hashsign(#hash_sign_algos{} | undefined, undefined | binary(),
+ atom(), [atom()], ssl_record:ssl_version()) ->
+ {atom(), atom()} | undefined | #alert{}.
%%
-%% Description:
+%% Description: Handles signature_algorithms extension
%%--------------------------------------------------------------------
-select_hashsign(_, undefined, _Version) ->
+select_hashsign(_, undefined, _, _, _Version) ->
{null, anon};
%% The signature_algorithms extension was introduced with TLS 1.2. Ignore it if we have
%% negotiated a lower version.
-select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, {Major, Minor} = Version)
- when Major >= 3 andalso Minor >= 3 ->
- #'OTPCertificate'{tbsCertificate = TBSCert} =public_key:pkix_decode_cert(Cert, otp),
+select_hashsign(HashSigns, Cert, KeyExAlgo,
+ undefined, {Major, Minor} = Version) when Major >= 3 andalso Minor >= 3->
+ select_hashsign(HashSigns, Cert, KeyExAlgo, tls_v1:default_signature_algs(Version), Version);
+select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert, KeyExAlgo, SupportedHashSigns,
+ {Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
+ #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
#'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
- DefaultHashSign = {_, Sign} = select_hashsign_algs(undefined, Algo, Version),
- case lists:filter(fun({sha, dsa}) ->
+ Sign = cert_sign(Algo),
+ case lists:filter(fun({sha, dsa = S}) when S == Sign ->
true;
({_, dsa}) ->
false;
- ({Hash, S}) when S == Sign ->
- ssl_cipher:is_acceptable_hash(Hash,
- proplists:get_value(hashs, crypto:supports()));
+ ({_, _} = Algos) ->
+ is_acceptable_hash_sign(Algos, Sign, KeyExAlgo, SupportedHashSigns);
(_) ->
false
end, HashSigns) of
[] ->
- DefaultHashSign;
- [HashSign| _] ->
+ ?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY);
+ [HashSign | _] ->
HashSign
end;
-select_hashsign(_, Cert, Version) ->
+select_hashsign(_, Cert, _, _, Version) ->
#'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
#'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
select_hashsign_algs(undefined, Algo, Version).
%%--------------------------------------------------------------------
--spec select_hashsign_algs(#hash_sign_algos{}| undefined, oid(), ssl_record:ssl_version()) ->
+-spec select_hashsign_algs({atom(), atom()}| undefined, oid(), ssl_record:ssl_version()) ->
{atom(), atom()}.
%% Description: For TLS 1.2 hash function and signature algorithm pairs can be
@@ -642,24 +650,6 @@ select_hashsign_algs(undefined, ?rsaEncryption, _) ->
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{}.
@@ -1063,9 +1053,56 @@ available_suites(UserSuites, Version) ->
lists:member(Suite, ssl_cipher:all_suites(Version))
end, UserSuites).
-available_suites(ServerCert, UserSuites, Version, Curve) ->
+available_suites(ServerCert, UserSuites, Version, undefined, Curve) ->
ssl_cipher:filter(ServerCert, available_suites(UserSuites, Version))
- -- unavailable_ecc_suites(Curve).
+ -- unavailable_ecc_suites(Curve);
+available_suites(ServerCert, UserSuites, Version, HashSigns, Curve) ->
+ Suites = available_suites(ServerCert, UserSuites, Version, undefined, Curve),
+ filter_hashsigns(Suites, [ssl_cipher:suite_definition(Suite) || Suite <- Suites], HashSigns, []).
+filter_hashsigns([], [], _, Acc) ->
+ lists:reverse(Acc);
+filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns,
+ Acc) when KeyExchange == dhe_ecdsa;
+ KeyExchange == ecdhe_ecdsa ->
+ do_filter_hashsigns(ecdsa, Suite, Suites, Algos, HashSigns, Acc);
+
+filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns,
+ Acc) when KeyExchange == rsa;
+ KeyExchange == dhe_rsa;
+ KeyExchange == ecdhe_rsa;
+ KeyExchange == srp_rsa;
+ KeyExchange == rsa_psk ->
+ do_filter_hashsigns(rsa, Suite, Suites, Algos, HashSigns, Acc);
+filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when
+ KeyExchange == dhe_dss;
+ KeyExchange == srp_dss ->
+ do_filter_hashsigns(dsa, Suite, Suites, Algos, HashSigns, Acc);
+filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when
+ KeyExchange == dh_dss;
+ KeyExchange == dh_rsa;
+ KeyExchange == dh_ecdsa;
+ KeyExchange == ecdh_rsa;
+ KeyExchange == ecdh_ecdsa ->
+ %% Fixed DH certificates MAY be signed with any hash/signature
+ %% algorithm pair appearing in the hash_sign extension. The names
+ %% DH_DSS, DH_RSA, ECDH_ECDSA, and ECDH_RSA are historical.
+ filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
+filter_hashsigns([Suite | Suites], [{KeyExchange,_,_,_} | Algos], HashSigns, Acc) when
+ KeyExchange == dh_anon;
+ KeyExchange == ecdh_anon;
+ KeyExchange == srp_anon;
+ KeyExchange == psk;
+ KeyExchange == dhe_psk ->
+ %% In this case hashsigns is not used as the kexchange is anonaymous
+ filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]).
+
+do_filter_hashsigns(SignAlgo, Suite, Suites, Algos, HashSigns, Acc) ->
+ case lists:keymember(SignAlgo, 2, HashSigns) of
+ true ->
+ filter_hashsigns(Suites, Algos, HashSigns, [Suite| Acc]);
+ false ->
+ filter_hashsigns(Suites, Algos, HashSigns, Acc)
+ end.
unavailable_ecc_suites(no_curve) ->
ssl_cipher:ec_keyed_suites();
@@ -1077,17 +1114,17 @@ cipher_suites(Suites, false) ->
cipher_suites(Suites, true) ->
Suites.
-select_session(SuggestedSessionId, CipherSuites, Compressions, Port, #session{ecc = ECCCurve} =
+select_session(SuggestedSessionId, CipherSuites, HashSigns, Compressions, Port, #session{ecc = ECCCurve} =
Session, Version,
- #ssl_options{ciphers = UserSuites, honor_cipher_order = HCO} = SslOpts,
+ #ssl_options{ciphers = UserSuites, honor_cipher_order = HonorCipherOrder} = SslOpts,
Cache, CacheCb, Cert) ->
{SessionId, Resumed} = ssl_session:server_id(Port, SuggestedSessionId,
SslOpts, Cert,
Cache, CacheCb),
case Resumed of
undefined ->
- Suites = available_suites(Cert, UserSuites, Version, ECCCurve),
- CipherSuite = select_cipher_suite(CipherSuites, Suites, HCO),
+ Suites = available_suites(Cert, UserSuites, Version, HashSigns, ECCCurve),
+ CipherSuite = select_cipher_suite(CipherSuites, Suites, HonorCipherOrder),
Compression = select_compression(Compressions),
{new, Session#session{session_id = SessionId,
cipher_suite = CipherSuite,
@@ -1155,7 +1192,7 @@ handle_client_hello_extensions(RecordCB, Random, ClientCipherSuites,
#hello_extensions{renegotiation_info = Info,
srp = SRP,
ec_point_formats = ECCFormat,
- alpn = ALPN,
+ alpn = ALPN,
next_protocol_negotiation = NextProtocolNegotiation}, Version,
#ssl_options{secure_renegotiate = SecureRenegotation,
alpn_preferred_protocols = ALPNPreferredProtocols} = Opts,
@@ -1324,7 +1361,7 @@ handle_renegotiation_info(_RecordCB, ConnectionStates, SecureRenegotation) ->
hello_extensions_list(#hello_extensions{renegotiation_info = RenegotiationInfo,
srp = SRP,
- hash_signs = HashSigns,
+ signature_algs = HashSigns,
ec_point_formats = EcPointFormats,
elliptic_curves = EllipticCurves,
alpn = ALPN,
@@ -1799,7 +1836,7 @@ dec_hello_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
<<?UINT16(SignAlgoListLen), SignAlgoList/binary>> = ExtData,
HashSignAlgos = [{ssl_cipher:hash_algorithm(Hash), ssl_cipher:sign_algorithm(Sign)} ||
<<?BYTE(Hash), ?BYTE(Sign)>> <= SignAlgoList],
- dec_hello_extensions(Rest, Acc#hello_extensions{hash_signs =
+ dec_hello_extensions(Rest, Acc#hello_extensions{signature_algs =
#hash_sign_algos{hash_sign_algos = HashSignAlgos}});
dec_hello_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
@@ -1899,7 +1936,7 @@ from_2bytes(<<?UINT16(N), Rest/binary>>, Acc) ->
key_exchange_alg(rsa) ->
?KEY_EXCHANGE_RSA;
key_exchange_alg(Alg) when Alg == dhe_rsa; Alg == dhe_dss;
- Alg == dh_dss; Alg == dh_rsa; Alg == dh_anon ->
+ Alg == dh_dss; Alg == dh_rsa; Alg == dh_anon ->
?KEY_EXCHANGE_DIFFIE_HELLMAN;
key_exchange_alg(Alg) when Alg == ecdhe_rsa; Alg == ecdh_rsa;
Alg == ecdhe_ecdsa; Alg == ecdh_ecdsa;
@@ -2008,27 +2045,16 @@ is_member(Suite, SupportedSuites) ->
select_compression(_CompressionMetodes) ->
?NULL.
--define(TLSEXT_SIGALG_RSA(MD), {MD, rsa}).
--define(TLSEXT_SIGALG_DSA(MD), {MD, dsa}).
--define(TLSEXT_SIGALG_ECDSA(MD), {MD, ecdsa}).
-
--define(TLSEXT_SIGALG(MD), ?TLSEXT_SIGALG_ECDSA(MD), ?TLSEXT_SIGALG_RSA(MD)).
-
-advertised_hash_signs({Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
- HashSigns = [?TLSEXT_SIGALG(sha512),
- ?TLSEXT_SIGALG(sha384),
- ?TLSEXT_SIGALG(sha256),
- ?TLSEXT_SIGALG(sha224),
- ?TLSEXT_SIGALG(sha),
- ?TLSEXT_SIGALG_DSA(sha),
- ?TLSEXT_SIGALG_RSA(md5)],
- CryptoSupport = crypto:supports(),
- HasECC = proplists:get_bool(ecdsa, proplists:get_value(public_keys, CryptoSupport)),
- Hashs = proplists:get_value(hashs, CryptoSupport),
- #hash_sign_algos{hash_sign_algos =
- lists:filter(fun({Hash, ecdsa}) -> HasECC andalso proplists:get_bool(Hash, Hashs);
- ({Hash, _}) -> proplists:get_bool(Hash, Hashs) end, HashSigns)};
-advertised_hash_signs(_) ->
+available_signature_algs(undefined, _, _) ->
+ undefined;
+available_signature_algs(SupportedHashSigns, {Major, Minor}, AllVersions) when Major >= 3 andalso Minor >= 3 ->
+ case tls_record:lowest_protocol_version(AllVersions) of
+ {3, 3} ->
+ #hash_sign_algos{hash_sign_algos = SupportedHashSigns};
+ _ ->
+ undefined
+ end;
+available_signature_algs(_, _, _) ->
undefined.
psk_secret(PSKIdentity, PSKLookup) ->
@@ -2123,3 +2149,25 @@ distpoints_lookup([DistPoint | Rest], Callback, CRLDbHandle) ->
CRLs ->
[{DistPoint, {CRL, public_key:der_decode('CertificateList', CRL)}} || CRL <- CRLs]
end.
+
+cert_sign(?rsaEncryption) ->
+ rsa;
+cert_sign(?'id-ecPublicKey') ->
+ ecdsa;
+cert_sign(?'id-dsa') ->
+ dsa;
+cert_sign(Alg) ->
+ {_, Sign} =public_key:pkix_sign_types(Alg),
+ Sign.
+
+is_acceptable_hash_sign({_, Sign} = Algos, Sign, _, SupportedHashSigns) ->
+ is_acceptable_hash_sign(Algos, SupportedHashSigns);
+is_acceptable_hash_sign(Algos,_, KeyExAlgo, SupportedHashSigns) when KeyExAlgo == dh_ecdsa;
+ KeyExAlgo == ecdh_rsa;
+ KeyExAlgo == ecdh_ecdsa ->
+ is_acceptable_hash_sign(Algos, SupportedHashSigns);
+is_acceptable_hash_sign(_,_,_,_) ->
+ false.
+is_acceptable_hash_sign(Algos, SupportedHashSigns) ->
+ lists:member(Algos, SupportedHashSigns).
+
diff --git a/lib/ssl/src/ssl_handshake.hrl b/lib/ssl/src/ssl_handshake.hrl
index 58b4d5a23d..b74a65939b 100644
--- a/lib/ssl/src/ssl_handshake.hrl
+++ b/lib/ssl/src/ssl_handshake.hrl
@@ -95,7 +95,7 @@
-record(hello_extensions, {
renegotiation_info,
- hash_signs, % supported combinations of hashes/signature algos
+ signature_algs, % supported combinations of hashes/signature algos
alpn,
next_protocol_negotiation = undefined, % [binary()]
srp,
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index 913746598f..9c52f5a315 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -135,7 +135,8 @@
padding_check = true :: boolean(),
fallback = false :: boolean(),
crl_check :: boolean() | peer | best_effort,
- crl_cache
+ crl_cache,
+ signature_algs
}).
-record(socket_options,
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index c3f0206d25..93716d31b8 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -182,8 +182,7 @@ hello(start, #state{host = Host, port = Port, role = client,
next_state(hello, hello, Record, State);
hello(Hello = #client_hello{client_version = ClientVersion,
- extensions = #hello_extensions{hash_signs = HashSigns,
- ec_point_formats = EcPointFormats,
+ extensions = #hello_extensions{ec_point_formats = EcPointFormats,
elliptic_curves = EllipticCurves}},
State = #state{connection_states = ConnectionStates0,
port = Port, session = #session{own_certificate = Cert} = Session0,
@@ -191,27 +190,28 @@ hello(Hello = #client_hello{client_version = ClientVersion,
session_cache = Cache,
session_cache_cb = CacheCb,
negotiated_protocol = CurrentProtocol,
+ key_algorithm = KeyExAlg,
ssl_options = SslOpts}) ->
+
case tls_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
- ConnectionStates0, Cert}, Renegotiation) of
+ ConnectionStates0, Cert, KeyExAlg}, Renegotiation) of
#alert{} = Alert ->
handle_own_alert(Alert, ClientVersion, hello, State);
{Version, {Type, Session},
- ConnectionStates, Protocol0, ServerHelloExt} ->
-
+ ConnectionStates, Protocol0, ServerHelloExt, HashSign} ->
Protocol = case Protocol0 of
- undefined -> CurrentProtocol;
- _ -> Protocol0
- end,
-
- HashSign = ssl_handshake:select_hashsign(HashSigns, Cert, Version),
- ssl_connection:hello({common_client_hello, Type, ServerHelloExt, HashSign},
+ undefined -> CurrentProtocol;
+ _ -> Protocol0
+ end,
+ ssl_connection:hello({common_client_hello, Type, ServerHelloExt},
State#state{connection_states = ConnectionStates,
negotiated_version = Version,
+ hashsign_algorithm = HashSign,
session = Session,
client_ecc = {EllipticCurves, EcPointFormats},
negotiated_protocol = Protocol}, ?MODULE)
end;
+
hello(Hello = #server_hello{},
#state{connection_states = ConnectionStates0,
negotiated_version = ReqVersion,
@@ -1069,3 +1069,4 @@ handle_sni_extension(#client_hello{extensions = HelloExtensions}, State0) ->
end;
handle_sni_extension(_, State0) ->
State0.
+
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index 0a6cb9f92d..ef718c13df 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -56,7 +56,7 @@ client_hello(Host, Port, ConnectionStates,
Version = tls_record:highest_protocol_version(Versions),
Pending = ssl_record:pending_connection_state(ConnectionStates, read),
SecParams = Pending#connection_state.security_parameters,
- AvailableCipherSuites = ssl_handshake:available_suites(UserSuites, Version),
+ AvailableCipherSuites = ssl_handshake:available_suites(UserSuites, Version),
Extensions = ssl_handshake:client_hello_extensions(Host, Version,
AvailableCipherSuites,
SslOpts, ConnectionStates, Renegotiation),
@@ -80,13 +80,13 @@ client_hello(Host, Port, ConnectionStates,
-spec hello(#server_hello{} | #client_hello{}, #ssl_options{},
#connection_states{} | {inet:port_number(), #session{}, db_handle(),
atom(), #connection_states{},
- binary() | undefined},
+ binary() | undefined, ssl_cipher:key_algo()},
boolean()) ->
{tls_record:tls_version(), session_id(),
#connection_states{}, alpn | npn, binary() | undefined}|
{tls_record:tls_version(), {resumed | new, #session{}},
#connection_states{}, binary() | undefined,
- #hello_extensions{}} |
+ #hello_extensions{}, {ssl_cipher:hash(), ssl_cipher:sign_algo()} | undefined} |
#alert{}.
%%
%% Description: Handles a recieved hello message
@@ -149,26 +149,35 @@ get_tls_handshake(Version, Data, Buffer) ->
%%% Internal functions
%%--------------------------------------------------------------------
handle_client_hello(Version, #client_hello{session_id = SugesstedId,
- cipher_suites = CipherSuites,
- compression_methods = Compressions,
- random = Random,
- extensions = #hello_extensions{elliptic_curves = Curves} = HelloExt},
- #ssl_options{versions = Versions} = SslOpts,
- {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert}, Renegotiation) ->
+ cipher_suites = CipherSuites,
+ compression_methods = Compressions,
+ random = Random,
+ extensions = #hello_extensions{elliptic_curves = Curves,
+ signature_algs = ClientHashSigns} = HelloExt},
+ #ssl_options{versions = Versions,
+ signature_algs = SupportedHashSigns} = SslOpts,
+ {Port, Session0, Cache, CacheCb, ConnectionStates0, Cert, _}, Renegotiation) ->
case tls_record:is_acceptable_version(Version, Versions) of
true ->
+ AvailableHashSigns = available_signature_algs(ClientHashSigns, SupportedHashSigns, Cert, Version),
ECCCurve = ssl_handshake:select_curve(Curves, ssl_handshake:supported_ecc(Version)),
{Type, #session{cipher_suite = CipherSuite} = Session1}
- = ssl_handshake:select_session(SugesstedId, CipherSuites, Compressions,
+ = ssl_handshake:select_session(SugesstedId, CipherSuites, AvailableHashSigns, Compressions,
Port, Session0#session{ecc = ECCCurve}, Version,
SslOpts, Cache, CacheCb, Cert),
case CipherSuite of
no_suite ->
?ALERT_REC(?FATAL, ?INSUFFICIENT_SECURITY);
_ ->
- handle_client_hello_extensions(Version, Type, Random, CipherSuites, HelloExt,
- SslOpts, Session1, ConnectionStates0,
- Renegotiation)
+ {KeyExAlg,_,_,_} = ssl_cipher:suite_definition(CipherSuite),
+ case ssl_handshake:select_hashsign(ClientHashSigns, Cert, KeyExAlg, SupportedHashSigns, Version) of
+ #alert{} = Alert ->
+ Alert;
+ HashSign ->
+ handle_client_hello_extensions(Version, Type, Random, CipherSuites, HelloExt,
+ SslOpts, Session1, ConnectionStates0,
+ Renegotiation, HashSign)
+ end
end;
false ->
?ALERT_REC(?FATAL, ?PROTOCOL_VERSION)
@@ -245,14 +254,14 @@ enc_handshake(HandshakeMsg, Version) ->
handle_client_hello_extensions(Version, Type, Random, CipherSuites,
- HelloExt, SslOpts, Session0, ConnectionStates0, Renegotiation) ->
+ HelloExt, SslOpts, Session0, ConnectionStates0, Renegotiation, HashSign) ->
try ssl_handshake:handle_client_hello_extensions(tls_record, Random, CipherSuites,
HelloExt, Version, SslOpts,
Session0, ConnectionStates0, Renegotiation) of
#alert{} = Alert ->
Alert;
{Session, ConnectionStates, Protocol, ServerHelloExt} ->
- {Version, {Type, Session}, ConnectionStates, Protocol, ServerHelloExt}
+ {Version, {Type, Session}, ConnectionStates, Protocol, ServerHelloExt, HashSign}
catch throw:Alert ->
Alert
end.
@@ -269,3 +278,12 @@ handle_server_hello_extensions(Version, SessionId, Random, CipherSuite,
{Version, SessionId, ConnectionStates, ProtoExt, Protocol}
end.
+available_signature_algs(undefined, SupportedHashSigns, _, {Major, Minor}) when (Major < 3) andalso (Minor < 3) ->
+ SupportedHashSigns;
+available_signature_algs(#hash_sign_algos{hash_sign_algos = ClientHashSigns}, SupportedHashSigns,
+ _, {Major, Minor}) when (Major < 3) andalso (Minor < 3) ->
+ ordsets:intersection(ClientHashSigns, SupportedHashSigns);
+available_signature_algs(_, _, _, _) ->
+ undefined.
+
+
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,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 02:25:39 +0000