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-rw-r--r--lib/ssl/src/ssl_connection.erl112
-rw-r--r--lib/ssl/src/ssl_handshake.erl188
-rw-r--r--lib/ssl/src/ssl_handshake.hrl9
3 files changed, 161 insertions, 148 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index cde13069b5..94f76e0606 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -1628,78 +1628,49 @@ save_verify_data(client, #finished{verify_data = Data}, ConnectionStates, abbrev
save_verify_data(server, #finished{verify_data = Data}, ConnectionStates, abbreviated) ->
ssl_record:set_server_verify_data(current_write, Data, ConnectionStates).
-handle_server_key(#server_key_exchange{params =
- #server_dh_params{dh_p = P,
- dh_g = G,
- dh_y = ServerPublicDhKey},
- signed_params = <<>>},
- #state{key_algorithm = dh_anon} = State) ->
- dh_master_secret(P, G, ServerPublicDhKey, undefined, State);
-
-handle_server_key(
- #server_key_exchange{params =
- #server_dh_params{dh_p = P,
- dh_g = G,
- dh_y = ServerPublicDhKey},
- signed_params = Signed,
- hashsign = HashSign},
- #state{negotiated_version = Version,
- public_key_info = PubKeyInfo,
- connection_states = ConnectionStates} = State) ->
-
- PLen = size(P),
- GLen = size(G),
- YLen = size(ServerPublicDhKey),
- HashAlgo = connection_hash_algo(HashSign, State),
+handle_server_key(#server_key_exchange{exchange_keys = Keys},
+ #state{key_algorithm = KeyAlg,
+ negotiated_version = Version} = State) ->
+ Params = ssl_handshake:decode_server_key(Keys, KeyAlg, Version),
+ HashSign = connection_hashsign(Params#server_key_params.hashsign, State),
+ case HashSign of
+ {_, anon} ->
+ server_master_secret(Params#server_key_params.params, State);
+ _ ->
+ verify_server_key(Params, HashSign, State)
+ end.
- ConnectionState =
+verify_server_key(#server_key_params{params = Params,
+ params_bin = EncParams,
+ signature = Signature},
+ HashSign = {HashAlgo, _},
+ #state{negotiated_version = Version,
+ public_key_info = PubKeyInfo,
+ connection_states = ConnectionStates} = State) ->
+ ConnectionState =
ssl_record:pending_connection_state(ConnectionStates, read),
SecParams = ConnectionState#connection_state.security_parameters,
#security_parameters{client_random = ClientRandom,
server_random = ServerRandom} = SecParams,
Hash = ssl_handshake:server_key_exchange_hash(HashAlgo,
- <<ClientRandom/binary,
- ServerRandom/binary,
- ?UINT16(PLen), P/binary,
- ?UINT16(GLen), G/binary,
- ?UINT16(YLen),
- ServerPublicDhKey/binary>>),
-
- case verify_dh_params(Version, Signed, Hash, HashAlgo, PubKeyInfo) of
+ <<ClientRandom/binary,
+ ServerRandom/binary,
+ EncParams/binary>>),
+ case ssl_handshake:verify_signature(Version, Hash, HashSign, Signature, PubKeyInfo) of
true ->
- dh_master_secret(P, G, ServerPublicDhKey, undefined, State);
+ server_master_secret(Params, State);
false ->
?ALERT_REC(?FATAL, ?DECRYPT_ERROR)
end.
-verify_dh_params({3, Minor}, Signed, Hashes, HashAlgo, {?rsaEncryption, PubKey, _PubKeyParams})
- when Minor >= 3 ->
- public_key:verify({digest, Hashes}, HashAlgo, Signed, PubKey);
-verify_dh_params(_Version, Signed, Hashes, _HashAlgo, {?rsaEncryption, PubKey, _PubKeyParams}) ->
- case public_key:decrypt_public(Signed, PubKey,
- [{rsa_pad, rsa_pkcs1_padding}]) of
- Hashes ->
- true;
- _ ->
- false
- end;
-verify_dh_params(_Version, Signed, Hash, HashAlgo, {?'id-dsa', PublicKey, PublicKeyParams}) ->
- public_key:verify({digest, Hash}, HashAlgo, Signed, {PublicKey, PublicKeyParams}).
-
-dh_master_secret(Prime, Base, PublicDhKey, undefined, State) ->
- PMpint = mpint_binary(Prime),
- GMpint = mpint_binary(Base),
- Keys = {_, PrivateDhKey} =
- crypto:dh_generate_key([PMpint,GMpint]),
- dh_master_secret(PMpint, GMpint, PublicDhKey, PrivateDhKey, State#state{diffie_hellman_keys = Keys});
+server_master_secret(#server_dh_params{dh_p = P, dh_g = G, dh_y = ServerPublicDhKey},
+ State) ->
+ dh_master_secret(P, G, ServerPublicDhKey, undefined, State).
-dh_master_secret(PMpint, GMpint, PublicDhKey, PrivateDhKey,
- #state{session = Session,
- negotiated_version = Version, role = Role,
- connection_states = ConnectionStates0} = State) ->
- PremasterSecret =
- crypto:dh_compute_key(mpint_binary(PublicDhKey), PrivateDhKey,
- [PMpint, GMpint]),
+master_from_premaster_secret(PremasterSecret,
+ #state{session = Session,
+ negotiated_version = Version, role = Role,
+ connection_states = ConnectionStates0} = State) ->
case ssl_handshake:master_secret(Version, PremasterSecret,
ConnectionStates0, Role) of
{MasterSecret, ConnectionStates} ->
@@ -1711,6 +1682,19 @@ dh_master_secret(PMpint, GMpint, PublicDhKey, PrivateDhKey,
Alert
end.
+dh_master_secret(Prime, Base, PublicDhKey, undefined, State) ->
+ PMpint = mpint_binary(Prime),
+ GMpint = mpint_binary(Base),
+ Keys = {_, PrivateDhKey} =
+ crypto:dh_generate_key([PMpint,GMpint]),
+ dh_master_secret(PMpint, GMpint, PublicDhKey, PrivateDhKey, State#state{diffie_hellman_keys = Keys});
+
+dh_master_secret(PMpint, GMpint, PublicDhKey, PrivateDhKey, State) ->
+ PremasterSecret =
+ crypto:dh_compute_key(mpint_binary(PublicDhKey), PrivateDhKey,
+ [PMpint, GMpint]),
+ master_from_premaster_secret(PremasterSecret, State).
+
cipher_role(client, Data, Session, #state{connection_states = ConnectionStates0} = State) ->
ConnectionStates = ssl_record:set_server_verify_data(current_both, Data, ConnectionStates0),
next_state_connection(cipher, ack_connection(State#state{session = Session,
@@ -2485,10 +2469,10 @@ get_pending_connection_state_prf(CStates, Direction) ->
CS = ssl_record:pending_connection_state(CStates, Direction),
CS#connection_state.security_parameters#security_parameters.prf_algorithm.
-connection_hash_algo({HashAlgo, _}, _State) ->
- HashAlgo;
-connection_hash_algo(_, #state{hashsign_algorithm = {HashAlgo, _}}) ->
- HashAlgo.
+connection_hashsign(HashSign = {_, _}, _State) ->
+ HashSign;
+connection_hashsign(_, #state{hashsign_algorithm = HashSign}) ->
+ HashSign.
%% RFC 5246, Sect. 7.4.1.4.1. Signature Algorithms
%% If the client does not send the signature_algorithms extension, the
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index db21dac942..1929370991 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -32,10 +32,10 @@
-export([master_secret/4, client_hello/8, server_hello/5, hello/4,
hello_request/0, certify/7, certificate/4,
- client_certificate_verify/6, certificate_verify/6,
+ client_certificate_verify/6, certificate_verify/6, verify_signature/5,
certificate_request/3, key_exchange/3, server_key_exchange_hash/2,
finished/5, verify_connection/6, get_tls_handshake/3,
- decode_client_key/3, server_hello_done/0,
+ decode_client_key/3, decode_server_key/3, server_hello_done/0,
encode_handshake/2, init_handshake_history/0, update_handshake_history/2,
decrypt_premaster_secret/2, prf/5, next_protocol/1]).
@@ -320,25 +320,36 @@ client_certificate_verify(OwnCert, MasterSecret, Version,
%%
%% Description: Checks that the certificate_verify message is valid.
%%--------------------------------------------------------------------
-certificate_verify(Signature, {?'rsaEncryption', PublicKey, _}, Version,
- {HashAlgo, _SignAlgo}, MasterSecret, {_, Handshake}) ->
- Hashes = calc_certificate_verify(Version, HashAlgo, MasterSecret, Handshake),
- case certificate_verify_rsa(Hashes, HashAlgo, Signature, PublicKey, Version) of
+certificate_verify(Signature, PublicKeyInfo, Version,
+ HashSign = {HashAlgo, _}, MasterSecret, {_, Handshake}) ->
+ Hash = calc_certificate_verify(Version, HashAlgo, MasterSecret, Handshake),
+ case verify_signature(Version, Hash, HashSign, Signature, PublicKeyInfo) of
true ->
valid;
_ ->
- ?ALERT_REC(?FATAL, ?BAD_CERTIFICATE)
- end;
-certificate_verify(Signature, {?'id-dsa', PublicKey, PublicKeyParams}, Version,
- {HashAlgo, _SignAlgo}, MasterSecret, {_, Handshake}) ->
- Hashes = calc_certificate_verify(Version, HashAlgo, MasterSecret, Handshake),
- case public_key:verify({digest, Hashes}, sha, Signature, {PublicKey, PublicKeyParams}) of
- true ->
- valid;
- false ->
?ALERT_REC(?FATAL, ?BAD_CERTIFICATE)
end.
+%%--------------------------------------------------------------------
+-spec verify_signature(tls_version(), binary(), {term(), term()}, binary(),
+ public_key_info()) -> true | false.
+%%
+%% Description: Checks that a public_key signature is valid.
+%%--------------------------------------------------------------------
+verify_signature(_Version, _Hash, {_HashAlgo, anon}, _Signature, _) ->
+ true;
+verify_signature({3, Minor}, Hash, {HashAlgo, rsa}, Signature, {?rsaEncryption, PubKey, _PubKeyParams})
+ when Minor >= 3 ->
+ public_key:verify({digest, Hash}, HashAlgo, Signature, PubKey);
+verify_signature(_Version, Hash, _HashAlgo, Signature, {?rsaEncryption, PubKey, _PubKeyParams}) ->
+ case public_key:decrypt_public(Signature, PubKey,
+ [{rsa_pad, rsa_pkcs1_padding}]) of
+ Hash -> true;
+ _ -> false
+ end;
+verify_signature(_Version, Hash, {HashAlgo, dsa}, Signature, {?'id-dsa', PublicKey, PublicKeyParams}) ->
+ public_key:verify({digest, Hash}, HashAlgo, Signature, {PublicKey, PublicKeyParams}).
+
%%--------------------------------------------------------------------
-spec certificate_request(#connection_states{}, db_handle(), certdb_ref()) ->
@@ -382,31 +393,33 @@ key_exchange(client, _Version, {dh, <<?UINT32(Len), PublicKey:Len/binary>>}) ->
key_exchange(server, Version, {dh, {<<?UINT32(Len), PublicKey:Len/binary>>, _},
#'DHParameter'{prime = P, base = G},
- {HashAlgo, SignAlgo}, ClientRandom, ServerRandom, PrivateKey}) ->
+ HashSign, ClientRandom, ServerRandom, PrivateKey}) ->
<<?UINT32(_), PBin/binary>> = crypto:mpint(P),
<<?UINT32(_), GBin/binary>> = crypto:mpint(G),
- PLen = byte_size(PBin),
- GLen = byte_size(GBin),
- YLen = byte_size(PublicKey),
ServerDHParams = #server_dh_params{dh_p = PBin,
dh_g = GBin, dh_y = PublicKey},
+ enc_server_key_exchange(Version, ServerDHParams, HashSign,
+ ClientRandom, ServerRandom, PrivateKey).
+enc_server_key_exchange(Version, Params, {HashAlgo, SignAlgo},
+ ClientRandom, ServerRandom, PrivateKey) ->
+ EncParams = enc_server_key(Params),
case HashAlgo of
null ->
- #server_key_exchange{params = ServerDHParams,
- signed_params = <<>>,
- hashsign = {null, anon}};
+ #server_key_params{params = Params,
+ params_bin = EncParams,
+ hashsign = {null, anon},
+ signature = <<>>};
_ ->
Hash =
server_key_exchange_hash(HashAlgo, <<ClientRandom/binary,
- ServerRandom/binary,
- ?UINT16(PLen), PBin/binary,
- ?UINT16(GLen), GBin/binary,
- ?UINT16(YLen), PublicKey/binary>>),
- Signed = digitally_signed(Version, Hash, HashAlgo, PrivateKey),
- #server_key_exchange{params = ServerDHParams,
- signed_params = Signed,
- hashsign = {HashAlgo, SignAlgo}}
+ ServerRandom/binary,
+ EncParams/binary>>),
+ Signature = digitally_signed(Version, Hash, HashAlgo, PrivateKey),
+ #server_key_params{params = Params,
+ params_bin = EncParams,
+ hashsign = {HashAlgo, SignAlgo},
+ signature = Signature}
end.
%%--------------------------------------------------------------------
@@ -523,6 +536,15 @@ decode_client_key(ClientKey, Type, Version) ->
dec_client_key(ClientKey, key_exchange_alg(Type), Version).
%%--------------------------------------------------------------------
+-spec decode_server_key(binary(), key_algo(), tls_version()) ->
+ #server_key_params{}.
+%%
+%% Description: Decode server_key data and return appropriate type
+%%--------------------------------------------------------------------
+decode_server_key(ServerKey, Type, Version) ->
+ dec_server_key(ServerKey, key_exchange_alg(Type), Version).
+
+%%--------------------------------------------------------------------
-spec init_handshake_history() -> tls_handshake_history().
%%
@@ -975,31 +997,8 @@ dec_hs(_Version, ?SERVER_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
next_protocol_negotiation = NextProtocolNegotiation};
dec_hs(_Version, ?CERTIFICATE, <<?UINT24(ACLen), ASN1Certs:ACLen/binary>>) ->
#certificate{asn1_certificates = certs_to_list(ASN1Certs)};
-
-dec_hs(_Version, ?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P:PLen/binary,
- ?UINT16(GLen), G:GLen/binary,
- ?UINT16(YLen), Y:YLen/binary,
- ?UINT16(0)>>) -> %% May happen if key_algorithm is dh_anon
- #server_key_exchange{params = #server_dh_params{dh_p = P,dh_g = G,
- dh_y = Y},
- signed_params = <<>>, hashsign = {null, anon}};
-dec_hs({Major, Minor}, ?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P:PLen/binary,
- ?UINT16(GLen), G:GLen/binary,
- ?UINT16(YLen), Y:YLen/binary,
- ?BYTE(HashAlgo), ?BYTE(SignAlgo),
- ?UINT16(Len), Sig:Len/binary>>)
- when Major == 3, Minor >= 3 ->
- #server_key_exchange{params = #server_dh_params{dh_p = P,dh_g = G,
- dh_y = Y},
- signed_params = Sig,
- hashsign = {ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)}};
-dec_hs(_Version, ?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P:PLen/binary,
- ?UINT16(GLen), G:GLen/binary,
- ?UINT16(YLen), Y:YLen/binary,
- ?UINT16(Len), Sig:Len/binary>>) ->
- #server_key_exchange{params = #server_dh_params{dh_p = P,dh_g = G,
- dh_y = Y},
- signed_params = Sig, hashsign = undefined};
+dec_hs(_Version, ?SERVER_KEY_EXCHANGE, Keys) ->
+ #server_key_exchange{exchange_keys = Keys};
dec_hs({Major, Minor}, ?CERTIFICATE_REQUEST,
<<?BYTE(CertTypesLen), CertTypes:CertTypesLen/binary,
?UINT16(HashSignsLen), HashSigns:HashSignsLen/binary,
@@ -1039,6 +1038,42 @@ dec_client_key(<<?UINT16(DH_YLen), DH_Y:DH_YLen/binary>>,
?KEY_EXCHANGE_DIFFIE_HELLMAN, _) ->
#client_diffie_hellman_public{dh_public = DH_Y}.
+dec_ske_params(Len, Keys, Version) ->
+ <<Params:Len/bytes, Signature/binary>> = Keys,
+ dec_ske_signature(Params, Signature, Version).
+
+dec_ske_signature(Params, <<?BYTE(HashAlgo), ?BYTE(SignAlgo),
+ ?UINT16(0)>>, {Major, Minor})
+ when Major == 3, Minor >= 3 ->
+ HashSign = {ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)},
+ {Params, HashSign, <<>>};
+dec_ske_signature(Params, <<?BYTE(HashAlgo), ?BYTE(SignAlgo),
+ ?UINT16(Len), Signature:Len/binary>>, {Major, Minor})
+ when Major == 3, Minor >= 3 ->
+ HashSign = {ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)},
+ {Params, HashSign, Signature};
+dec_ske_signature(Params, <<>>, _) ->
+ {Params, {null, anon}, <<>>};
+dec_ske_signature(Params, <<?UINT16(0)>>, _) ->
+ {Params, {null, anon}, <<>>};
+dec_ske_signature(Params, <<?UINT16(Len), Signature:Len/binary>>, _) ->
+ {Params, undefined, Signature};
+dec_ske_signature(_, _, _) ->
+ throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE)).
+
+dec_server_key(<<?UINT16(PLen), P:PLen/binary,
+ ?UINT16(GLen), G:GLen/binary,
+ ?UINT16(YLen), Y:YLen/binary, _/binary>> = KeyStruct,
+ ?KEY_EXCHANGE_DIFFIE_HELLMAN, Version) ->
+ Params = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
+ {BinMsg, HashSign, Signature} = dec_ske_params(PLen + GLen + YLen + 6, KeyStruct, Version),
+ #server_key_params{params = Params,
+ params_bin = BinMsg,
+ hashsign = HashSign,
+ signature = Signature};
+dec_server_key(_, _, _) ->
+ throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE)).
+
dec_hello_extensions(<<>>) ->
[];
dec_hello_extensions(<<?UINT16(ExtLen), Extensions:ExtLen/binary>>) ->
@@ -1156,18 +1191,12 @@ enc_hs(#certificate{asn1_certificates = ASN1CertList}, _Version) ->
ASN1Certs = certs_from_list(ASN1CertList),
ACLen = erlang:iolist_size(ASN1Certs),
{?CERTIFICATE, <<?UINT24(ACLen), ASN1Certs:ACLen/binary>>};
-enc_hs(#server_key_exchange{params = #server_dh_params{
- dh_p = P, dh_g = G, dh_y = Y},
- signed_params = SignedParams, hashsign = HashSign}, Version) ->
- PLen = byte_size(P),
- GLen = byte_size(G),
- YLen = byte_size(Y),
- Signature = enc_sign(HashSign, SignedParams, Version),
- {?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P/binary,
- ?UINT16(GLen), G/binary,
- ?UINT16(YLen), Y/binary,
- Signature/binary>>
- };
+enc_hs(#server_key_exchange{exchange_keys = Keys}, _Version) ->
+ {?SERVER_KEY_EXCHANGE, Keys};
+enc_hs(#server_key_params{params_bin = Keys, hashsign = HashSign,
+ signature = Signature}, Version) ->
+ EncSign = enc_sign(HashSign, Signature, Version),
+ {?SERVER_KEY_EXCHANGE, <<Keys/binary, EncSign/binary>>};
enc_hs(#certificate_request{certificate_types = CertTypes,
hashsign_algorithms = #hash_sign_algos{hash_sign_algos = HashSignAlgos},
certificate_authorities = CertAuths},
@@ -1211,6 +1240,14 @@ enc_cke(#client_diffie_hellman_public{dh_public = DHPublic}, _) ->
Len = byte_size(DHPublic),
<<?UINT16(Len), DHPublic/binary>>.
+enc_server_key(#server_dh_params{dh_p = P, dh_g = G, dh_y = Y}) ->
+ PLen = byte_size(P),
+ GLen = byte_size(G),
+ YLen = byte_size(Y),
+ <<?UINT16(PLen), P/binary, ?UINT16(GLen), G/binary, ?UINT16(YLen), Y/binary>>.
+
+enc_sign({_, anon}, _Sign, _Version) ->
+ <<>>;
enc_sign({HashAlg, SignAlg}, Signature, _Version = {Major, Minor})
when Major == 3, Minor >= 3->
SignLen = byte_size(Signature),
@@ -1328,8 +1365,8 @@ certificate_authorities_from_db(CertDbHandle, CertDbRef) ->
digitally_signed({3, Minor}, Hash, HashAlgo, Key) when Minor >= 3 ->
public_key:sign({digest, Hash}, HashAlgo, Key);
-digitally_signed(_Version, Hash, _HashAlgo, #'DSAPrivateKey'{} = Key) ->
- public_key:sign({digest, Hash}, sha, Key);
+digitally_signed(_Version, Hash, HashAlgo, #'DSAPrivateKey'{} = Key) ->
+ public_key:sign({digest, Hash}, HashAlgo, Key);
digitally_signed(_Version, Hash, _HashAlgo, #'RSAPrivateKey'{} = Key) ->
public_key:encrypt_private(Hash, Key,
[{rsa_pad, rsa_pkcs1_padding}]).
@@ -1378,19 +1415,6 @@ apply_user_fun(Fun, OtpCert, ExtensionOrError, UserState0, SslState) ->
{unknown, {SslState, UserState}}
end.
-certificate_verify_rsa(Hashes, sha, Signature, PublicKey, {Major, Minor})
- when Major == 3, Minor >= 3 ->
- public_key:verify({digest, Hashes}, sha, Signature, PublicKey);
-certificate_verify_rsa(Hashes, HashAlgo, Signature, PublicKey, {Major, Minor})
- when Major == 3, Minor >= 3 ->
- public_key:verify({digest, Hashes}, HashAlgo, Signature, PublicKey);
-certificate_verify_rsa(Hashes, _HashAlgo, Signature, PublicKey, _Version) ->
- case public_key:decrypt_public(Signature, PublicKey,
- [{rsa_pad, rsa_pkcs1_padding}]) of
- Hashes -> true;
- _ -> false
- end.
-
-define(TLSEXT_SIGALG_RSA(MD), {MD, rsa}).
-define(TLSEXT_SIGALG_DSA(MD), {MD, dsa}).
diff --git a/lib/ssl/src/ssl_handshake.hrl b/lib/ssl/src/ssl_handshake.hrl
index 9af6511d68..2414d5b666 100644
--- a/lib/ssl/src/ssl_handshake.hrl
+++ b/lib/ssl/src/ssl_handshake.hrl
@@ -141,9 +141,14 @@
}).
-record(server_key_exchange, {
+ exchange_keys
+ }).
+
+-record(server_key_params, {
params, %% #server_rsa_params{} | #server_dh_params{}
- signed_params, %% #signature{}
- hashsign %% term(atom(), atom())
+ params_bin,
+ hashsign, %% term(atom(), atom())
+ signature %% #signature{}
}).
%% enum { anonymous, rsa, dsa } SignatureAlgorithm;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 02:50:08 +0000