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authorAndreas Schultz <[email protected]>2012-06-15 17:35:58 +0200
committerIngela Anderton Andin <[email protected]>2012-08-22 14:00:43 +0200
commit571133751287d93598dc90fe90b58ab4580f4836 (patch)
treebd265955a8e32f871d94ff66afb09d3d85e24184 /lib/ssl/src
parent0c692262d9be40ba1d2565ee5f663c70e9c630b1 (diff)
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ssl: Calculate handshake hash only when needed
TLS/SSL version before 1.2 always used a MD5/SHA combination for the handshake hashes. With TLS 1.2 the default hash is SHA256 and it is possible to negotiate a different hash. This change delays the calculation of the handshake hashes until they are really needed. At that point the hash to use should be known. For now MD5/SHA is still hard coded.
Diffstat (limited to 'lib/ssl/src')
-rw-r--r--lib/ssl/src/ssl_connection.erl186
-rw-r--r--lib/ssl/src/ssl_handshake.erl93
-rw-r--r--lib/ssl/src/ssl_handshake.hrl3
-rw-r--r--lib/ssl/src/ssl_ssl3.erl49
-rw-r--r--lib/ssl/src/ssl_tls1.erl25
5 files changed, 166 insertions, 190 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index c57930e821..965b396353 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -67,8 +67,7 @@
tls_packets = [], % Not yet handled decode ssl/tls packets.
tls_record_buffer, % binary() buffer of incomplete records
tls_handshake_buffer, % binary() buffer of incomplete handshakes
- %% {{md5_hash, sha_hash}, {prev_md5, prev_sha}} (binary())
- tls_handshake_hashes, % see above
+ tls_handshake_history, % tls_handshake_history()
tls_cipher_texts, % list() received but not deciphered yet
cert_db, %
session, % #session{} from ssl_handshake.hrl
@@ -301,12 +300,13 @@ start_link(Role, Host, Port, Socket, Options, User, CbInfo) ->
init([Role, Host, Port, Socket, {SSLOpts0, _} = Options, User, CbInfo]) ->
State0 = initial_state(Role, Host, Port, Socket, Options, User, CbInfo),
- Hashes0 = ssl_handshake:init_hashes(),
+ Handshake = ssl_handshake:init_handshake_history(),
TimeStamp = calendar:datetime_to_gregorian_seconds({date(), time()}),
try ssl_init(SSLOpts0, Role) of
{ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, OwnCert, Key, DHParams} ->
Session = State0#state.session,
- State = State0#state{tls_handshake_hashes = Hashes0,
+ State = State0#state{
+ tls_handshake_history = Handshake,
session = Session#session{own_certificate = OwnCert,
time_stamp = TimeStamp},
file_ref_db = FileRefHandle,
@@ -344,15 +344,15 @@ hello(start, #state{host = Host, port = Port, role = client,
Cache, CacheCb, Renegotiation, Cert),
Version = Hello#client_hello.client_version,
- Hashes0 = ssl_handshake:init_hashes(),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Hello, Version, ConnectionStates0, Hashes0),
+ Handshake0 = ssl_handshake:init_handshake_history(),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Hello, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State1 = State0#state{connection_states = ConnectionStates,
- negotiated_version = Version, %% Requested version at this point
+ negotiated_version = Version, %% Requested version
session =
Session0#session{session_id = Hello#client_hello.session_id},
- tls_handshake_hashes = Hashes},
+ tls_handshake_history = Handshake},
{Record, State} = next_record(State1),
next_state(hello, hello, Record, State);
@@ -431,12 +431,13 @@ abbreviated(#hello_request{}, State0) ->
abbreviated(#finished{verify_data = Data} = Finished,
#state{role = server,
negotiated_version = Version,
- tls_handshake_hashes = Hashes,
+ tls_handshake_history = Handshake,
session = #session{master_secret = MasterSecret},
connection_states = ConnectionStates0} =
State) ->
+%%CHECKME
case ssl_handshake:verify_connection(Version, Finished, client,
- MasterSecret, Hashes) of
+ MasterSecret, Handshake) of
verified ->
ConnectionStates = ssl_record:set_client_verify_data(current_both, Data, ConnectionStates0),
next_state_connection(abbreviated,
@@ -447,18 +448,18 @@ abbreviated(#finished{verify_data = Data} = Finished,
end;
abbreviated(#finished{verify_data = Data} = Finished,
- #state{role = client, tls_handshake_hashes = Hashes0,
+ #state{role = client, tls_handshake_history = Handshake0,
session = #session{master_secret = MasterSecret},
negotiated_version = Version,
connection_states = ConnectionStates0} = State) ->
case ssl_handshake:verify_connection(Version, Finished, server,
- MasterSecret, Hashes0) of
+ MasterSecret, Handshake0) of
verified ->
ConnectionStates1 = ssl_record:set_server_verify_data(current_read, Data, ConnectionStates0),
- {ConnectionStates, Hashes} =
+ {ConnectionStates, Handshake} =
finalize_handshake(State#state{connection_states = ConnectionStates1}, abbreviated),
next_state_connection(abbreviated,
- ack_connection(State#state{tls_handshake_hashes = Hashes,
+ ack_connection(State#state{tls_handshake_history = Handshake,
connection_states =
ConnectionStates}));
#alert{} = Alert ->
@@ -641,10 +642,10 @@ cipher(#certificate_verify{signature = Signature},
public_key_info = PublicKeyInfo,
negotiated_version = Version,
session = #session{master_secret = MasterSecret},
- tls_handshake_hashes = Hashes
+ tls_handshake_history = Handshake
} = State0) ->
case ssl_handshake:certificate_verify(Signature, PublicKeyInfo,
- Version, MasterSecret, Hashes) of
+ Version, MasterSecret, Handshake) of
valid ->
{Record, State} = next_record(State0),
next_state(cipher, cipher, Record, State);
@@ -660,10 +661,10 @@ cipher(#finished{verify_data = Data} = Finished,
role = Role,
session = #session{master_secret = MasterSecret}
= Session0,
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
case ssl_handshake:verify_connection(Version, Finished,
opposite_role(Role),
- MasterSecret, Hashes0) of
+ MasterSecret, Handshake0) of
verified ->
Session = register_session(Role, Host, Port, Session0),
cipher_role(Role, Data, Session, State);
@@ -691,17 +692,17 @@ connection(#hello_request{}, #state{host = Host, port = Port,
transport_cb = Transport,
connection_states = ConnectionStates0,
renegotiation = {Renegotiation, _},
- tls_handshake_hashes = Hashes0} = State0) ->
+ tls_handshake_history = Handshake0} = State0) ->
Hello = ssl_handshake:client_hello(Host, Port, ConnectionStates0, SslOpts,
Cache, CacheCb, Renegotiation, Cert),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Hello, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Hello, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
{Record, State} = next_record(State0#state{connection_states =
- ConnectionStates,
+ ConnectionStates,
session = Session0#session{session_id = Hello#client_hello.session_id},
- tls_handshake_hashes = Hashes}),
+ tls_handshake_history = Handshake}),
next_state(connection, hello, Record, State);
connection(#client_hello{} = Hello, #state{role = server, allow_renegotiate = true} = State) ->
%% Mitigate Computational DoS attack
@@ -1224,13 +1225,13 @@ certify_client(#state{client_certificate_requested = true, role = client,
cert_db_ref = CertDbRef,
session = #session{own_certificate = OwnCert},
socket = Socket,
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
Certificate = ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, client),
- {BinCert, ConnectionStates, Hashes} =
- encode_handshake(Certificate, Version, ConnectionStates0, Hashes0),
+ {BinCert, ConnectionStates, Handshake} =
+ encode_handshake(Certificate, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinCert),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes};
+ tls_handshake_history = Handshake};
certify_client(#state{client_certificate_requested = false} = State) ->
State.
@@ -1242,17 +1243,17 @@ verify_client_cert(#state{client_certificate_requested = true, role = client,
private_key = PrivateKey,
session = #session{master_secret = MasterSecret,
own_certificate = OwnCert},
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
case ssl_handshake:client_certificate_verify(OwnCert, MasterSecret,
- Version, PrivateKey, Hashes0) of
+ Version, PrivateKey, Handshake0) of
#certificate_verify{} = Verified ->
- {BinVerified, ConnectionStates, Hashes} =
+ {BinVerified, ConnectionStates, Handshake} =
encode_handshake(Verified, Version,
- ConnectionStates0, Hashes0),
+ ConnectionStates0, Handshake0),
Transport:send(Socket, BinVerified),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes};
+ tls_handshake_history = Handshake};
ignore ->
State;
#alert{} = Alert ->
@@ -1308,11 +1309,11 @@ resumed_server_hello(#state{session = Session,
{_, ConnectionStates1} ->
State1 = State0#state{connection_states = ConnectionStates1,
session = Session},
- {ConnectionStates, Hashes} =
+ {ConnectionStates, Handshake} =
finalize_handshake(State1, abbreviated),
State2 = State1#state{connection_states =
ConnectionStates,
- tls_handshake_hashes = Hashes},
+ tls_handshake_history = Handshake},
{Record, State} = next_record(State2),
next_state(hello, abbreviated, Record, State);
#alert{} = Alert ->
@@ -1351,11 +1352,11 @@ client_certify_and_key_exchange(#state{negotiated_version = Version} =
State0) ->
try do_client_certify_and_key_exchange(State0) of
State1 = #state{} ->
- {ConnectionStates, Hashes} = finalize_handshake(State1, certify),
+ {ConnectionStates, Handshake} = finalize_handshake(State1, certify),
State2 = State1#state{connection_states = ConnectionStates,
%% Reinitialize
client_certificate_requested = false,
- tls_handshake_hashes = Hashes},
+ tls_handshake_history = Handshake},
{Record, State} = next_record(State2),
next_state(certify, cipher, Record, State)
catch
@@ -1378,29 +1379,29 @@ server_hello(ServerHello, #state{transport_cb = Transport,
socket = Socket,
negotiated_version = Version,
connection_states = ConnectionStates0,
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
CipherSuite = ServerHello#server_hello.cipher_suite,
{KeyAlgorithm, _, _} = ssl_cipher:suite_definition(CipherSuite),
- {BinMsg, ConnectionStates1, Hashes1} =
- encode_handshake(ServerHello, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates1, Handshake1} =
+ encode_handshake(ServerHello, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State#state{connection_states = ConnectionStates1,
- tls_handshake_hashes = Hashes1,
+ tls_handshake_history = Handshake1,
key_algorithm = KeyAlgorithm}.
server_hello_done(#state{transport_cb = Transport,
socket = Socket,
negotiated_version = Version,
connection_states = ConnectionStates0,
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
HelloDone = ssl_handshake:server_hello_done(),
- {BinHelloDone, ConnectionStates, Hashes} =
- encode_handshake(HelloDone, Version, ConnectionStates0, Hashes0),
+ {BinHelloDone, ConnectionStates, Handshake} =
+ encode_handshake(HelloDone, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinHelloDone),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes}.
+ tls_handshake_history = Handshake}.
certify_server(#state{key_algorithm = dh_anon} = State) ->
State;
@@ -1409,17 +1410,17 @@ certify_server(#state{transport_cb = Transport,
socket = Socket,
negotiated_version = Version,
connection_states = ConnectionStates0,
- tls_handshake_hashes = Hashes0,
+ tls_handshake_history = Handshake0,
cert_db = CertDbHandle,
cert_db_ref = CertDbRef,
session = #session{own_certificate = OwnCert}} = State) ->
case ssl_handshake:certificate(OwnCert, CertDbHandle, CertDbRef, server) of
CertMsg = #certificate{} ->
- {BinCertMsg, ConnectionStates, Hashes} =
- encode_handshake(CertMsg, Version, ConnectionStates0, Hashes0),
+ {BinCertMsg, ConnectionStates, Handshake} =
+ encode_handshake(CertMsg, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinCertMsg),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes
+ tls_handshake_history = Handshake
};
Alert = #alert{} ->
throw(Alert)
@@ -1432,7 +1433,7 @@ key_exchange(#state{role = server, key_algorithm = Algo,
private_key = PrivateKey,
connection_states = ConnectionStates0,
negotiated_version = Version,
- tls_handshake_hashes = Hashes0,
+ tls_handshake_history = Handshake0,
socket = Socket,
transport_cb = Transport
} = State)
@@ -1449,12 +1450,12 @@ key_exchange(#state{role = server, key_algorithm = Algo,
Algo, ClientRandom,
ServerRandom,
PrivateKey}),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Msg, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Msg, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State#state{connection_states = ConnectionStates,
diffie_hellman_keys = Keys,
- tls_handshake_hashes = Hashes};
+ tls_handshake_history = Handshake};
key_exchange(#state{role = client,
connection_states = ConnectionStates0,
@@ -1463,36 +1464,36 @@ key_exchange(#state{role = client,
negotiated_version = Version,
premaster_secret = PremasterSecret,
socket = Socket, transport_cb = Transport,
- tls_handshake_hashes = Hashes0} = State) ->
+ tls_handshake_history = Handshake0} = State) ->
Msg = rsa_key_exchange(PremasterSecret, PublicKeyInfo),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Msg, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Msg, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes};
+ tls_handshake_history = Handshake};
key_exchange(#state{role = client,
connection_states = ConnectionStates0,
key_algorithm = Algorithm,
negotiated_version = Version,
diffie_hellman_keys = {DhPubKey, _},
socket = Socket, transport_cb = Transport,
- tls_handshake_hashes = Hashes0} = State)
+ tls_handshake_history = Handshake0} = State)
when Algorithm == dhe_dss;
Algorithm == dhe_rsa;
Algorithm == dh_anon ->
Msg = ssl_handshake:key_exchange(client, {dh, DhPubKey}),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Msg, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Msg, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State#state{connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes}.
+ tls_handshake_history = Handshake}.
rsa_key_exchange(PremasterSecret, PublicKeyInfo = {Algorithm, _, _})
when Algorithm == ?rsaEncryption;
Algorithm == ?md2WithRSAEncryption;
Algorithm == ?md5WithRSAEncryption;
Algorithm == ?sha1WithRSAEncryption ->
- ssl_handshake:key_exchange(client,
+ ssl_handshake:key_exchange(client,
{premaster_secret, PremasterSecret,
PublicKeyInfo});
rsa_key_exchange(_, _) ->
@@ -1502,17 +1503,17 @@ request_client_cert(#state{ssl_options = #ssl_options{verify = verify_peer},
connection_states = ConnectionStates0,
cert_db = CertDbHandle,
cert_db_ref = CertDbRef,
- tls_handshake_hashes = Hashes0,
+ tls_handshake_history = Handshake0,
negotiated_version = Version,
socket = Socket,
transport_cb = Transport} = State) ->
Msg = ssl_handshake:certificate_request(ConnectionStates0, CertDbHandle, CertDbRef),
- {BinMsg, ConnectionStates, Hashes} =
- encode_handshake(Msg, Version, ConnectionStates0, Hashes0),
+ {BinMsg, ConnectionStates, Handshake} =
+ encode_handshake(Msg, Version, ConnectionStates0, Handshake0),
Transport:send(Socket, BinMsg),
State#state{client_certificate_requested = true,
connection_states = ConnectionStates,
- tls_handshake_hashes = Hashes};
+ tls_handshake_history = Handshake};
request_client_cert(#state{ssl_options = #ssl_options{verify = verify_none}} =
State) ->
State.
@@ -1538,14 +1539,14 @@ finished(#state{role = Role, socket = Socket, negotiated_version = Version,
transport_cb = Transport,
session = Session,
connection_states = ConnectionStates0,
- tls_handshake_hashes = Hashes0}, StateName) ->
+ tls_handshake_history = Handshake0}, StateName) ->
MasterSecret = Session#session.master_secret,
- Finished = ssl_handshake:finished(Version, Role, MasterSecret, Hashes0),
+ Finished = ssl_handshake:finished(Version, Role, MasterSecret, Handshake0),
ConnectionStates1 = save_verify_data(Role, Finished, ConnectionStates0, StateName),
- {BinFinished, ConnectionStates, Hashes} =
- encode_handshake(Finished, Version, ConnectionStates1, Hashes0),
+ {BinFinished, ConnectionStates, Handshake} =
+ encode_handshake(Finished, Version, ConnectionStates1, Handshake0),
Transport:send(Socket, BinFinished),
- {ConnectionStates, Hashes}.
+ {ConnectionStates, Handshake}.
save_verify_data(client, #finished{verify_data = Data}, ConnectionStates, certify) ->
ssl_record:set_client_verify_data(current_write, Data, ConnectionStates);
@@ -1641,26 +1642,26 @@ cipher_role(client, Data, Session, #state{connection_states = ConnectionStates0}
cipher_role(server, Data, Session, #state{connection_states = ConnectionStates0} = State) ->
ConnectionStates1 = ssl_record:set_client_verify_data(current_read, Data, ConnectionStates0),
- {ConnectionStates, Hashes} =
+ {ConnectionStates, Handshake} =
finalize_handshake(State#state{connection_states = ConnectionStates1,
session = Session}, cipher),
next_state_connection(cipher, ack_connection(State#state{connection_states =
ConnectionStates,
session = Session,
- tls_handshake_hashes =
- Hashes})).
+ tls_handshake_history =
+ Handshake})).
encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
ssl_record:encode_alert_record(Alert, Version, ConnectionStates).
encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) ->
ssl_record:encode_change_cipher_spec(Version, ConnectionStates).
-encode_handshake(HandshakeRec, Version, ConnectionStates0, Hashes0) ->
+encode_handshake(HandshakeRec, Version, ConnectionStates0, Handshake0) ->
Frag = ssl_handshake:encode_handshake(HandshakeRec, Version),
- Hashes1 = ssl_handshake:update_hashes(Hashes0, Frag),
+ Handshake1 = ssl_handshake:update_handshake_history(Handshake0, Frag),
{E, ConnectionStates1} =
ssl_record:encode_handshake(Frag, Version, ConnectionStates0),
- {E, ConnectionStates1, Hashes1}.
+ {E, ConnectionStates1, Handshake1}.
encode_packet(Data, #socket_options{packet=Packet}) ->
case Packet of
@@ -1913,21 +1914,22 @@ next_state(Current, Next, #ssl_tls{type = ?HANDSHAKE, fragment = Data},
fun({#hello_request{} = Packet, _}, {next_state, connection = SName, State}) ->
%% This message should not be included in handshake
%% message hashes. Starts new handshake (renegotiation)
- Hs0 = ssl_handshake:init_hashes(),
- ?MODULE:SName(Packet, State#state{tls_handshake_hashes=Hs0,
+ Hs0 = ssl_handshake:init_handshake_history(),
+ ?MODULE:SName(Packet, State#state{tls_handshake_history=Hs0,
renegotiation = {true, peer}});
({#hello_request{} = Packet, _}, {next_state, SName, State}) ->
%% This message should not be included in handshake
%% message hashes. Already in negotiation so it will be ignored!
?MODULE:SName(Packet, State);
({#client_hello{} = Packet, Raw}, {next_state, connection = SName, State}) ->
- Hs0 = ssl_handshake:init_hashes(),
- Hs1 = ssl_handshake:update_hashes(Hs0, Raw),
- ?MODULE:SName(Packet, State#state{tls_handshake_hashes=Hs1,
+ Version = Packet#client_hello.client_version,
+ Hs0 = ssl_handshake:init_handshake_history(),
+ Hs1 = ssl_handshake:update_handshake_history(Hs0, Raw),
+ ?MODULE:SName(Packet, State#state{tls_handshake_history=Hs1,
renegotiation = {true, peer}});
- ({Packet, Raw}, {next_state, SName, State = #state{tls_handshake_hashes=Hs0}}) ->
- Hs1 = ssl_handshake:update_hashes(Hs0, Raw),
- ?MODULE:SName(Packet, State#state{tls_handshake_hashes=Hs1});
+ ({Packet, Raw}, {next_state, SName, State = #state{tls_handshake_history=Hs0}}) ->
+ Hs1 = ssl_handshake:update_handshake_history(Hs0, Raw),
+ ?MODULE:SName(Packet, State#state{tls_handshake_history=Hs1});
(_, StopState) -> StopState
end,
try
@@ -2011,7 +2013,7 @@ next_state_connection(StateName, #state{send_queue = Queue0,
next_state_is_connection(StateName, State)
end.
-%% In next_state_is_connection/1: clear tls_handshake_hashes,
+%% In next_state_is_connection/1: clear tls_handshake,
%% premaster_secret and public_key_info (only needed during handshake)
%% to reduce memory foot print of a connection.
next_state_is_connection(_, State =
@@ -2020,13 +2022,13 @@ next_state_is_connection(_, State =
#socket_options{active = false}}) when RecvFrom =/= undefined ->
passive_receive(State#state{premaster_secret = undefined,
public_key_info = undefined,
- tls_handshake_hashes = {<<>>, <<>>}}, connection);
+ tls_handshake_history = ssl_handshake:init_handshake_history()}, connection);
next_state_is_connection(StateName, State0) ->
{Record, State} = next_record_if_active(State0),
next_state(StateName, connection, Record, State#state{premaster_secret = undefined,
public_key_info = undefined,
- tls_handshake_hashes = {<<>>, <<>>}}).
+ tls_handshake_history = ssl_handshake:init_handshake_history()}).
register_session(client, Host, Port, #session{is_resumable = new} = Session0) ->
Session = Session0#session{is_resumable = true},
@@ -2307,8 +2309,8 @@ ack_connection(State) ->
renegotiate(#state{role = client} = State) ->
%% Handle same way as if server requested
%% the renegotiation
- Hs0 = ssl_handshake:init_hashes(),
- connection(#hello_request{}, State#state{tls_handshake_hashes = Hs0});
+ Hs0 = ssl_handshake:init_handshake_history(),
+ connection(#hello_request{}, State#state{tls_handshake_history = Hs0});
renegotiate(#state{role = server,
socket = Socket,
transport_cb = Transport,
@@ -2316,13 +2318,13 @@ renegotiate(#state{role = server,
connection_states = ConnectionStates0} = State0) ->
HelloRequest = ssl_handshake:hello_request(),
Frag = ssl_handshake:encode_handshake(HelloRequest, Version),
- Hs0 = ssl_handshake:init_hashes(),
+ Hs0 = ssl_handshake:init_handshake_history(),
{BinMsg, ConnectionStates} =
ssl_record:encode_handshake(Frag, Version, ConnectionStates0),
Transport:send(Socket, BinMsg),
{Record, State} = next_record(State0#state{connection_states =
ConnectionStates,
- tls_handshake_hashes = Hs0}),
+ tls_handshake_history = Hs0}),
next_state(connection, hello, Record, State#state{allow_renegotiate = true}).
notify_senders(SendQueue) ->
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 06d45966c1..cf42129534 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -36,7 +36,7 @@
certificate_request/3, key_exchange/2, server_key_exchange_hash/2,
finished/4, verify_connection/5, get_tls_handshake/2,
decode_client_key/3, server_hello_done/0,
- encode_handshake/2, init_hashes/0, update_hashes/2,
+ encode_handshake/2, init_handshake_history/0, update_handshake_history/2,
decrypt_premaster_secret/2, prf/5]).
-export([dec_hello_extensions/2]).
@@ -258,7 +258,7 @@ certificate(OwnCert, CertDbHandle, CertDbRef, server) ->
%%--------------------------------------------------------------------
-spec client_certificate_verify(undefined | der_cert(), binary(),
tls_version(), private_key(),
- {{binary(), binary()},{binary(), binary()}}) ->
+ tls_handshake_history()) ->
#certificate_verify{} | ignore | #alert{}.
%%
%% Description: Creates a certificate_verify message, called by the client.
@@ -268,28 +268,28 @@ client_certificate_verify(undefined, _, _, _, _) ->
client_certificate_verify(_, _, _, undefined, _) ->
ignore;
client_certificate_verify(OwnCert, MasterSecret, Version,
- PrivateKey, {Hashes0, _}) ->
+ PrivateKey, {Handshake, _}) ->
case public_key:pkix_is_fixed_dh_cert(OwnCert) of
true ->
?ALERT_REC(?FATAL, ?UNSUPPORTED_CERTIFICATE);
false ->
Hashes =
calc_certificate_verify(Version, MasterSecret,
- alg_oid(PrivateKey), Hashes0),
+ alg_oid(PrivateKey), Handshake),
Signed = digitally_signed(Hashes, PrivateKey),
#certificate_verify{signature = Signed}
end.
%%--------------------------------------------------------------------
-spec certificate_verify(binary(), public_key_info(), tls_version(),
- binary(), {_, {binary(), binary()}}) -> valid | #alert{}.
+ binary(), tls_handshake_history()) -> valid | #alert{}.
%%
%% Description: Checks that the certificate_verify message is valid.
%%--------------------------------------------------------------------
certificate_verify(Signature, {?'rsaEncryption'= Algorithm, PublicKey, _}, Version,
- MasterSecret, {_, Hashes0}) ->
+ MasterSecret, {_, Handshake}) ->
Hashes = calc_certificate_verify(Version, MasterSecret,
- Algorithm, Hashes0),
+ Algorithm, Handshake),
case public_key:decrypt_public(Signature, PublicKey,
[{rsa_pad, rsa_pkcs1_padding}]) of
Hashes ->
@@ -298,9 +298,9 @@ certificate_verify(Signature, {?'rsaEncryption'= Algorithm, PublicKey, _}, Versi
?ALERT_REC(?FATAL, ?BAD_CERTIFICATE)
end;
certificate_verify(Signature, {?'id-dsa' = Algorithm, PublicKey, PublicKeyParams}, Version,
- MasterSecret, {_, Hashes0}) ->
+ MasterSecret, {_, Handshake}) ->
Hashes = calc_certificate_verify(Version, MasterSecret,
- Algorithm, Hashes0),
+ Algorithm, Handshake),
case public_key:verify(Hashes, none, Signature, {PublicKey, PublicKeyParams}) of
true ->
valid;
@@ -416,26 +416,26 @@ master_secret(Version, PremasterSecret, ConnectionStates, Role) ->
end.
%%--------------------------------------------------------------------
--spec finished(tls_version(), client | server, binary(), {{binary(), binary()},_}) ->
+-spec finished(tls_version(), client | server, binary(), tls_handshake_history()) ->
#finished{}.
%%
%% Description: Creates a handshake finished message
%%-------------------------------------------------------------------
-finished(Version, Role, MasterSecret, {Hashes, _}) -> % use the current hashes
+finished(Version, Role, MasterSecret, {Handshake, _}) -> % use the current hashes
#finished{verify_data =
- calc_finished(Version, Role, MasterSecret, Hashes)}.
+ calc_finished(Version, Role, MasterSecret, Handshake)}.
%%--------------------------------------------------------------------
-spec verify_connection(tls_version(), #finished{}, client | server, binary(),
- {_, {binary(), binary()}}) -> verified | #alert{}.
+ tls_handshake_history()) -> verified | #alert{}.
%%
%% Description: Checks the ssl handshake finished message to verify
%% the connection.
%%-------------------------------------------------------------------
verify_connection(Version, #finished{verify_data = Data},
- Role, MasterSecret, {_, {MD5, SHA}}) ->
+ Role, MasterSecret, {_, Handshake}) ->
%% use the previous hashes
- case calc_finished(Version, Role, MasterSecret, {MD5, SHA}) of
+ case calc_finished(Version, Role, MasterSecret, Handshake) of
Data ->
verified;
_ ->
@@ -482,39 +482,34 @@ decode_client_key(ClientKey, Type, Version) ->
dec_client_key(ClientKey, key_exchange_alg(Type), Version).
%%--------------------------------------------------------------------
--spec init_hashes() ->{{binary(), binary()}, {binary(), binary()}}.
+-spec init_handshake_history() -> tls_handshake_history().
%%
-%% Description: Calls crypto hash (md5 and sha) init functions to
-%% initalize the hash context.
+%% Description: Initialize the empty handshake history buffer.
%%--------------------------------------------------------------------
-init_hashes() ->
- T = {crypto:md5_init(), crypto:sha_init()},
- {T, T}.
+init_handshake_history() ->
+ {[], []}.
%%--------------------------------------------------------------------
--spec update_hashes({{binary(), binary()}, {binary(), binary()}}, Data ::term()) ->
- {{binary(), binary()}, {binary(), binary()}}.
+-spec update_handshake_history(tls_handshake_history(), Data ::term()) ->
+ tls_handshake_history().
%%
-%% Description: Calls crypto hash (md5 and sha) update functions to
-%% update the hash context with Data.
+%% Description: Update the handshake history buffer with Data.
%%--------------------------------------------------------------------
-update_hashes(Hashes, % special-case SSL2 client hello
- <<?CLIENT_HELLO, ?UINT24(_), ?BYTE(Major), ?BYTE(Minor),
- ?UINT16(CSLength), ?UINT16(0),
- ?UINT16(CDLength),
- CipherSuites:CSLength/binary,
- ChallengeData:CDLength/binary>>) ->
- update_hashes(Hashes,
- <<?CLIENT_HELLO, ?BYTE(Major), ?BYTE(Minor),
- ?UINT16(CSLength), ?UINT16(0),
- ?UINT16(CDLength),
- CipherSuites:CSLength/binary,
- ChallengeData:CDLength/binary>>);
-update_hashes({{MD50, SHA0}, _Prev}, Data) ->
- {MD51, SHA1} = {crypto:md5_update(MD50, Data),
- crypto:sha_update(SHA0, Data)},
- {{MD51, SHA1}, {MD50, SHA0}}.
+update_handshake_history(Handshake, % special-case SSL2 client hello
+ <<?CLIENT_HELLO, ?UINT24(_), ?BYTE(Major), ?BYTE(Minor),
+ ?UINT16(CSLength), ?UINT16(0),
+ ?UINT16(CDLength),
+ CipherSuites:CSLength/binary,
+ ChallengeData:CDLength/binary>>) ->
+ update_handshake_history(Handshake,
+ <<?CLIENT_HELLO, ?BYTE(Major), ?BYTE(Minor),
+ ?UINT16(CSLength), ?UINT16(0),
+ ?UINT16(CDLength),
+ CipherSuites:CSLength/binary,
+ ChallengeData:CDLength/binary>>);
+update_handshake_history({Handshake0, _Prev}, Data) ->
+ {[Data|Handshake0], Handshake0}.
%%--------------------------------------------------------------------
-spec decrypt_premaster_secret(binary(), #'RSAPrivateKey'{}) -> binary().
@@ -1139,17 +1134,17 @@ setup_keys({3,1}, MasterSecret,
ssl_tls1:setup_keys(MasterSecret, ServerRandom, ClientRandom, HashSize,
KML, IVS).
-calc_finished({3, 0}, Role, MasterSecret, Hashes) ->
- ssl_ssl3:finished(Role, MasterSecret, Hashes);
-calc_finished({3, N}, Role, MasterSecret, Hashes)
+calc_finished({3, 0}, Role, MasterSecret, Handshake) ->
+ ssl_ssl3:finished(Role, MasterSecret, lists:reverse(Handshake));
+calc_finished({3, N}, Role, MasterSecret, Handshake)
when N == 1; N == 2 ->
- ssl_tls1:finished(Role, MasterSecret, Hashes).
+ ssl_tls1:finished(Role, MasterSecret, lists:reverse(Handshake)).
-calc_certificate_verify({3, 0}, MasterSecret, Algorithm, Hashes) ->
- ssl_ssl3:certificate_verify(Algorithm, MasterSecret, Hashes);
-calc_certificate_verify({3, N}, _, Algorithm, Hashes)
+calc_certificate_verify({3, 0}, MasterSecret, Algorithm, Handshake) ->
+ ssl_ssl3:certificate_verify(Algorithm, MasterSecret, lists:reverse(Handshake));
+calc_certificate_verify({3, N}, _, Algorithm, Handshake)
when N == 1; N == 2 ->
- ssl_tls1:certificate_verify(Algorithm, Hashes).
+ ssl_tls1:certificate_verify(Algorithm, lists:reverse(Handshake)).
key_exchange_alg(rsa) ->
?KEY_EXCHANGE_RSA;
diff --git a/lib/ssl/src/ssl_handshake.hrl b/lib/ssl/src/ssl_handshake.hrl
index fb0ebac7d1..8510def2fd 100644
--- a/lib/ssl/src/ssl_handshake.hrl
+++ b/lib/ssl/src/ssl_handshake.hrl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -31,6 +31,7 @@
-type algo_oid() :: ?'rsaEncryption' | ?'id-dsa'.
-type public_key_params() :: #'Dss-Parms'{} | term().
-type public_key_info() :: {algo_oid(), #'RSAPublicKey'{} | integer() , public_key_params()}.
+-type tls_handshake_history() :: {[binary()], [binary()]}.
-record(session, {
session_id,
diff --git a/lib/ssl/src/ssl_ssl3.erl b/lib/ssl/src/ssl_ssl3.erl
index f2926b2d2f..2b4ae1539f 100644
--- a/lib/ssl/src/ssl_ssl3.erl
+++ b/lib/ssl/src/ssl_ssl3.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -54,9 +54,9 @@ master_secret(PremasterSecret, ClientRandom, ServerRandom) ->
Block = generate_keyblock(PremasterSecret, ClientRandom, ServerRandom, 48),
Block.
--spec finished(client | server, binary(), {binary(), binary()}) -> binary().
+-spec finished(client | server, binary(), [binary()]) -> binary().
-finished(Role, MasterSecret, {MD5Hash, SHAHash}) ->
+finished(Role, MasterSecret, Handshake) ->
%% draft-ietf-tls-ssl-version3-00 - 5.6.9 Finished
%% struct {
%% opaque md5_hash[16];
@@ -70,13 +70,13 @@ finished(Role, MasterSecret, {MD5Hash, SHAHash}) ->
%% SHA(handshake_messages + Sender +
%% master_secret + pad1));
Sender = get_sender(Role),
- MD5 = handshake_hash(?MD5, MasterSecret, Sender, MD5Hash),
- SHA = handshake_hash(?SHA, MasterSecret, Sender, SHAHash),
+ MD5 = handshake_hash(?MD5, MasterSecret, Sender, Handshake),
+ SHA = handshake_hash(?SHA, MasterSecret, Sender, Handshake),
<<MD5/binary, SHA/binary>>.
--spec certificate_verify(OID::tuple(), binary(), {binary(), binary()}) -> binary().
+-spec certificate_verify(OID::tuple(), binary(), [binary()]) -> binary().
-certificate_verify(?'rsaEncryption', MasterSecret, {MD5Hash, SHAHash}) ->
+certificate_verify(?'rsaEncryption', MasterSecret, Handshake) ->
%% md5_hash
%% MD5(master_secret + pad_2 +
%% MD5(handshake_messages + master_secret + pad_1));
@@ -84,15 +84,16 @@ certificate_verify(?'rsaEncryption', MasterSecret, {MD5Hash, SHAHash}) ->
%% SHA(master_secret + pad_2 +
%% SHA(handshake_messages + master_secret + pad_1));
- MD5 = handshake_hash(?MD5, MasterSecret, undefined, MD5Hash),
- SHA = handshake_hash(?SHA, MasterSecret, undefined, SHAHash),
+ MD5 = handshake_hash(?MD5, MasterSecret, undefined, Handshake),
+ SHA = handshake_hash(?SHA, MasterSecret, undefined, Handshake),
<<MD5/binary, SHA/binary>>;
-certificate_verify(?'id-dsa', MasterSecret, {_, SHAHash}) ->
+certificate_verify(?'id-dsa', MasterSecret, Handshake) ->
%% sha_hash
%% SHA(master_secret + pad_2 +
%% SHA(handshake_messages + master_secret + pad_1));
- handshake_hash(?SHA, MasterSecret, undefined, SHAHash).
+
+ handshake_hash(?SHA, MasterSecret, undefined, Handshake).
-spec mac_hash(integer(), binary(), integer(), integer(), integer(), binary()) -> binary().
@@ -157,16 +158,6 @@ hash(?MD5, Data) ->
hash(?SHA, Data) ->
crypto:sha(Data).
-hash_update(?MD5, Context, Data) ->
- crypto:md5_update(Context, Data);
-hash_update(?SHA, Context, Data) ->
- crypto:sha_update(Context, Data).
-
-hash_final(?MD5, Context) ->
- crypto:md5_final(Context);
-hash_final(?SHA, Context) ->
- crypto:sha_final(Context).
-
%%pad_1(?NULL) ->
%% "";
pad_1(?MD5) ->
@@ -189,19 +180,11 @@ mac_hash(Method, Secret, Data) ->
InnerHash = hash(Method, [Secret, pad_1(Method), Data]),
hash(Method, [Secret, pad_2(Method), InnerHash]).
-handshake_hash(Method, HandshakeHash, Extra) ->
- HSH = hash_update(Method, HandshakeHash, Extra),
- hash_final(Method, HSH).
-
-handshake_hash(Method, MasterSecret, undefined, HandshakeHash) ->
- InnerHash =
- handshake_hash(Method, HandshakeHash,
- [MasterSecret, pad_1(Method)]),
+handshake_hash(Method, MasterSecret, undefined, Handshake) ->
+ InnerHash = hash(Method, [Handshake, MasterSecret, pad_1(Method)]),
hash(Method, [MasterSecret, pad_2(Method), InnerHash]);
-handshake_hash(Method, MasterSecret, Sender, HandshakeHash) ->
- InnerHash =
- handshake_hash(Method, HandshakeHash,
- [Sender, MasterSecret, pad_1(Method)]),
+handshake_hash(Method, MasterSecret, Sender, Handshake) ->
+ InnerHash = hash(Method, [Handshake, Sender, MasterSecret, pad_1(Method)]),
hash(Method, [MasterSecret, pad_2(Method), InnerHash]).
get_sender(client) -> "CLNT";
diff --git a/lib/ssl/src/ssl_tls1.erl b/lib/ssl/src/ssl_tls1.erl
index c8aae34892..d64a8f815d 100644
--- a/lib/ssl/src/ssl_tls1.erl
+++ b/lib/ssl/src/ssl_tls1.erl
@@ -44,9 +44,9 @@ master_secret(PreMasterSecret, ClientRandom, ServerRandom) ->
prf(PreMasterSecret, <<"master secret">>,
[ClientRandom, ServerRandom], 48).
--spec finished(client | server, binary(), {binary(), binary()}) -> binary().
+-spec finished(client | server, binary(), [binary()]) -> binary().
-finished(Role, MasterSecret, {MD5Hash, SHAHash}) ->
+finished(Role, MasterSecret, Handshake) ->
%% RFC 2246 & 4346 - 7.4.9. Finished
%% struct {
%% opaque verify_data[12];
@@ -55,19 +55,19 @@ finished(Role, MasterSecret, {MD5Hash, SHAHash}) ->
%% verify_data
%% PRF(master_secret, finished_label, MD5(handshake_messages) +
%% SHA-1(handshake_messages)) [0..11];
- MD5 = hash_final(?MD5, MD5Hash),
- SHA = hash_final(?SHA, SHAHash),
+ MD5 = crypto:md5(Handshake),
+ SHA = crypto:sha(Handshake),
prf(MasterSecret, finished_label(Role), [MD5, SHA], 12).
--spec certificate_verify(OID::tuple(), {binary(), binary()}) -> binary().
+-spec certificate_verify(OID::tuple(), [binary()]) -> binary().
-certificate_verify(?'rsaEncryption', {MD5Hash, SHAHash}) ->
- MD5 = hash_final(?MD5, MD5Hash),
- SHA = hash_final(?SHA, SHAHash),
+certificate_verify(?'rsaEncryption', Handshake) ->
+ MD5 = crypto:md5(Handshake),
+ SHA = crypto:sha(Handshake),
<<MD5/binary, SHA/binary>>;
-certificate_verify(?'id-dsa', {_, SHAHash}) ->
- hash_final(?SHA, SHAHash).
+certificate_verify(?'id-dsa', Handshake) ->
+ crypto:sha(Handshake).
-spec setup_keys(binary(), binary(), binary(), integer(),
integer(), integer()) -> {binary(), binary(), binary(),
@@ -228,8 +228,3 @@ finished_label(client) ->
<<"client finished">>;
finished_label(server) ->
<<"server finished">>.
-
-hash_final(?MD5, Conntext) ->
- crypto:md5_final(Conntext);
-hash_final(?SHA, Conntext) ->
- crypto:sha_final(Conntext).