Merge pull request #1867 from IngelaAndin/ingela/ssl/no-ca-sign-restriction-TLS-1.2/ERL-381/OTP-15173

Ingela/ssl/no ca sign restriction tls 1.2/erl 381/otp 15173

3 files changed, 27 insertions, 55 deletions

diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index 754fc46404..50dadd0903 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -2709,6 +2709,8 @@ filter_suites_pubkey(ec, Ciphers, _, OtpCert) ->
                                    ec_ecdhe_suites(Ciphers)),
     filter_keyuse_suites(keyAgreement, Uses, CiphersSuites, ec_ecdh_suites(Ciphers)).
 
+filter_suites_signature(rsa, Ciphers, {3, N}) when N >= 3 ->
+     Ciphers;
 filter_suites_signature(rsa, Ciphers, Version) ->
     (Ciphers -- ecdsa_signed_suites(Ciphers, Version)) -- dsa_signed_suites(Ciphers, Version);
 filter_suites_signature(dsa, Ciphers, Version) ->
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index c5f75894cd..d88704676f 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -791,6 +791,7 @@ certify(internal, #server_key_exchange{exchange_keys = Keys},
         #state{role = client, negotiated_version = Version,
 	       key_algorithm = Alg,
 	       public_key_info = PubKeyInfo,
+               session = Session,
 	       connection_states = ConnectionStates} = State, Connection)
   when Alg == dhe_dss; Alg == dhe_rsa;
        Alg == ecdhe_rsa; Alg == ecdhe_ecdsa;
@@ -812,7 +813,8 @@ certify(internal, #server_key_exchange{exchange_keys = Keys},
 						  ConnectionStates, ssl:tls_version(Version), PubKeyInfo) of
 		true ->
 		    calculate_secret(Params#server_key_params.params,
-				     State#state{hashsign_algorithm = HashSign}, 
+				     State#state{hashsign_algorithm = HashSign,
+                                                 session = session_handle_params(Params#server_key_params.params, Session)}, 
 				     Connection);
 		false ->
 		    handle_own_alert(?ALERT_REC(?FATAL, ?DECRYPT_ERROR),
@@ -1472,7 +1474,7 @@ connection_info(#state{sni_hostname = SNIHostname,
     RecordCB = record_cb(Connection),
     CipherSuiteDef = #{key_exchange := KexAlg} = ssl_cipher:suite_definition(CipherSuite),
     IsNamedCurveSuite = lists:member(KexAlg,
-                                     [ecdh_ecdsa, ecdhe_ecdsa, ecdh_rsa, ecdh_anon]),
+                                     [ecdh_ecdsa, ecdhe_ecdsa, ecdh_rsa, ecdhe_rsa, ecdh_anon]),
     CurveInfo = case ECCCurve of
 		    {namedCurve, Curve} when IsNamedCurveSuite ->
 			[{ecc, {named_curve, pubkey_cert_records:namedCurves(Curve)}}];
@@ -1576,11 +1578,9 @@ handle_peer_cert_key(client, _,
 		     KeyAlg, #state{session = Session} = State)  when KeyAlg == ecdh_rsa;
                                                                       KeyAlg == ecdh_ecdsa ->
     ECDHKey = public_key:generate_key(PublicKeyParams),
-    {namedCurve, Oid} = PublicKeyParams,
-    Curve = pubkey_cert_records:namedCurves(Oid), %% Need API function
     PremasterSecret = ssl_handshake:premaster_secret(PublicKey, ECDHKey),
     master_secret(PremasterSecret, State#state{diffie_hellman_keys = ECDHKey,
-                                               session = Session#session{ecc = {named_curve, Curve}}});
+                                               session = Session#session{ecc = PublicKeyParams}});
 %% We do currently not support cipher suites that use fixed DH.
 %% If we want to implement that the following clause can be used
 %% to extract DH parameters form cert.
@@ -1757,9 +1757,11 @@ key_exchange(#state{role = server, key_algorithm = Algo,
 					       PrivateKey}),
     State = Connection:queue_handshake(Msg, State0),
     State#state{diffie_hellman_keys = DHKeys};
-key_exchange(#state{role = server, private_key = Key, key_algorithm = Algo} = State, _)
+key_exchange(#state{role = server, private_key = #'ECPrivateKey'{parameters = ECCurve} = Key, key_algorithm = Algo,
+                   session = Session} = State, _)
   when Algo == ecdh_ecdsa; Algo == ecdh_rsa ->
-    State#state{diffie_hellman_keys = Key};
+    State#state{diffie_hellman_keys = Key,
+                session = Session#session{ecc = ECCurve}};
 key_exchange(#state{role = server, key_algorithm = Algo,
 		    hashsign_algorithm = HashSignAlgo,
 		    private_key = PrivateKey,
@@ -1915,12 +1917,13 @@ key_exchange(#state{role = client,
 key_exchange(#state{role = client,
 		    key_algorithm = Algorithm,
 		    negotiated_version = Version,
-		    diffie_hellman_keys = Keys} = State0, Connection)
+                    session = Session,
+		    diffie_hellman_keys = #'ECPrivateKey'{parameters = ECCurve} = Key} = State0, Connection)
   when Algorithm == ecdhe_ecdsa; Algorithm == ecdhe_rsa;
        Algorithm == ecdh_ecdsa; Algorithm == ecdh_rsa;
        Algorithm == ecdh_anon ->
-    Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Keys}),
-    Connection:queue_handshake(Msg, State0);
+    Msg = ssl_handshake:key_exchange(client, ssl:tls_version(Version), {ecdh, Key}),
+    Connection:queue_handshake(Msg, State0#state{session = Session#session{ecc = ECCurve}});
 key_exchange(#state{role = client,
 		    ssl_options = SslOpts,
 		    key_algorithm = psk,
@@ -2443,6 +2446,11 @@ cancel_timer(Timer) ->
     erlang:cancel_timer(Timer),
     ok.
 
+session_handle_params(#server_ecdh_params{curve = ECCurve}, Session) ->
+    Session#session{ecc = ECCurve};
+session_handle_params(_, Session) ->
+    Session.
+
 register_session(client, Host, Port, #session{is_resumable = new} = Session0) ->
     Session = Session0#session{is_resumable = true},
     ssl_manager:register_session(Host, Port, Session),
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 76fc7ae3d1..4d0bdd6386 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -1065,17 +1065,14 @@ select_hashsign(HashSigns, Cert, KeyExAlgo,
     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,
-		      signatureAlgorithm =  {_,SignAlgo, _}} = public_key:pkix_decode_cert(Cert, otp),
+    #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
     #'OTPSubjectPublicKeyInfo'{algorithm = {_, SubjAlgo, _}} = 
      	TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
 
-    Sign = sign_algo(SignAlgo),
     SubSign = sign_algo(SubjAlgo),
     
     case lists:filter(fun({_, S} = Algos) when S == SubSign ->
-			      is_acceptable_hash_sign(Algos, Sign,
-						      SubSign, KeyExAlgo, SupportedHashSigns);
+			      is_acceptable_hash_sign(Algos, KeyExAlgo, SupportedHashSigns);
 			 (_)  ->
 			      false
 		      end, HashSigns) of
@@ -2232,37 +2229,7 @@ sign_algo(Alg) ->
     {_, Sign} =public_key:pkix_sign_types(Alg),
     Sign.
 
-is_acceptable_hash_sign(Algos, _, _, KeyExAlgo, SupportedHashSigns) when 
-      KeyExAlgo == dh_dss;
-      KeyExAlgo == dh_rsa;
-      KeyExAlgo == ecdh_rsa;
-      KeyExAlgo == ecdh_ecdsa
-      ->
-    %% *dh_* could be called only *dh in TLS-1.2
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign(Algos, rsa, ecdsa, ecdhe_rsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, rsa} = Algos, rsa, _, dhe_rsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, rsa} = Algos, rsa, rsa, ecdhe_rsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, rsa} = Algos, rsa, rsa, rsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, rsa} = Algos, rsa, _, srp_rsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, rsa} = Algos, rsa, _, rsa_psk, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, dsa} = Algos, dsa, _, dhe_dss, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, dsa} = Algos, dsa, _, srp_dss, SupportedHashSigns) ->  
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, ecdsa} = Algos, ecdsa, _, dhe_ecdsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, ecdsa} = Algos, ecdsa, ecdsa, ecdh_ecdsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign({_, ecdsa} = Algos, ecdsa, ecdsa, ecdhe_ecdsa, SupportedHashSigns) ->
-    is_acceptable_hash_sign(Algos, SupportedHashSigns); 
-is_acceptable_hash_sign(_, _, _, KeyExAlgo, _) when 
+is_acceptable_hash_sign( _, KeyExAlgo, _) when 
       KeyExAlgo == psk;
       KeyExAlgo == dhe_psk;
       KeyExAlgo == ecdhe_psk;
@@ -2271,8 +2238,9 @@ is_acceptable_hash_sign(_, _, _, KeyExAlgo, _) when
       KeyExAlgo == ecdhe_anon     
       ->
     true; 
-is_acceptable_hash_sign(_,_,_,_,_) ->
-    false.					
+is_acceptable_hash_sign(Algos,_, SupportedHashSigns) -> 
+    is_acceptable_hash_sign(Algos, SupportedHashSigns).
+
 is_acceptable_hash_sign(Algos, SupportedHashSigns) ->
     lists:member(Algos, SupportedHashSigns).
 
@@ -2465,13 +2433,7 @@ cert_curve(Cert, ECCCurve0, CipherSuite) ->
             #'OTPSubjectPublicKeyInfo'{algorithm = AlgInfo} 
                 = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
             {namedCurve, Oid}  = AlgInfo#'PublicKeyAlgorithm'.parameters,
-            try pubkey_cert_records:namedCurves(Oid) of
-                Curve ->
-                    {{named_curve, Curve}, CipherSuite}
-            catch 
-                _:_ ->
-                    {no_curve, no_suite}
-            end;
+            {{namedCurve, Oid}, CipherSuite};
         _ ->
             {ECCCurve0, CipherSuite}
     end.