aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ssl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/ssl')
-rw-r--r--lib/ssl/src/ssl_cipher.erl57
-rw-r--r--lib/ssl/src/ssl_connection.erl20
-rw-r--r--lib/ssl/src/ssl_handshake.erl16
-rw-r--r--lib/ssl/src/ssl_record.erl2
-rw-r--r--lib/ssl/src/ssl_ssl3.erl17
-rw-r--r--lib/ssl/src/ssl_tls1.erl3
6 files changed, 40 insertions, 75 deletions
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index 175d589931..1c8bbbaf06 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -75,20 +75,12 @@ cipher(?RC4, CipherState, Mac, Fragment) ->
S -> S
end,
GenStreamCipherList = [Fragment, Mac],
-
- ?DBG_HEX(GenStreamCipherList),
- ?DBG_HEX(State0),
{State1, T} = crypto:rc4_encrypt_with_state(State0, GenStreamCipherList),
- ?DBG_HEX(T),
{T, CipherState#cipher_state{state = State1}};
cipher(?DES, CipherState, Mac, Fragment) ->
block_cipher(fun(Key, IV, T) ->
crypto:des_cbc_encrypt(Key, IV, T)
end, block_size(des_cbc), CipherState, Mac, Fragment);
-%% cipher(?DES40, CipherState, Mac, Fragment) ->
-%% block_cipher(fun(Key, IV, T) ->
-%% crypto:des_cbc_encrypt(Key, IV, T)
-%% end, block_size(des_cbc), CipherState, Mac, Fragment);
cipher(?'3DES', CipherState, Mac, Fragment) ->
block_cipher(fun(<<K1:8/binary, K2:8/binary, K3:8/binary>>, IV, T) ->
crypto:des3_cbc_encrypt(K1, K2, K3, IV, T)
@@ -109,11 +101,7 @@ block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV} = CS0,
TotSz = byte_size(Mac) + erlang:iolist_size(Fragment) + 1,
{PaddingLength, Padding} = get_padding(TotSz, BlockSz),
L = [Fragment, Mac, PaddingLength, Padding],
- ?DBG_HEX(Key),
- ?DBG_HEX(IV),
- ?DBG_HEX(L),
T = Fun(Key, IV, L),
- ?DBG_HEX(T),
NextIV = next_iv(T, IV),
{T, CS0#cipher_state{iv=NextIV}}.
@@ -127,26 +115,29 @@ block_cipher(Fun, BlockSz, #cipher_state{key=Key, iv=IV} = CS0,
decipher(?NULL, _HashSz, CipherState, Fragment, _) ->
{Fragment, <<>>, CipherState};
decipher(?RC4, HashSz, CipherState, Fragment, _) ->
- ?DBG_TERM(CipherState#cipher_state.key),
State0 = case CipherState#cipher_state.state of
undefined -> crypto:rc4_set_key(CipherState#cipher_state.key);
S -> S
end,
- ?DBG_HEX(State0),
- ?DBG_HEX(Fragment),
- {State1, T} = crypto:rc4_encrypt_with_state(State0, Fragment),
- ?DBG_HEX(T),
- GSC = generic_stream_cipher_from_bin(T, HashSz),
- #generic_stream_cipher{content=Content, mac=Mac} = GSC,
- {Content, Mac, CipherState#cipher_state{state=State1}};
+ try crypto:rc4_encrypt_with_state(State0, Fragment) of
+ {State, Text} ->
+ GSC = generic_stream_cipher_from_bin(Text, HashSz),
+ #generic_stream_cipher{content = Content, mac = Mac} = GSC,
+ {Content, Mac, CipherState#cipher_state{state = State}}
+ catch
+ _:_ ->
+ %% This is a DECRYPTION_FAILED but
+ %% "differentiating between bad_record_mac and decryption_failed
+ %% alerts may permit certain attacks against CBC mode as used in
+ %% TLS [CBCATT]. It is preferable to uniformly use the
+ %% bad_record_mac alert to hide the specific type of the error."
+ ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
+ end;
+
decipher(?DES, HashSz, CipherState, Fragment, Version) ->
block_decipher(fun(Key, IV, T) ->
crypto:des_cbc_decrypt(Key, IV, T)
end, CipherState, HashSz, Fragment, Version);
-%% decipher(?DES40, HashSz, CipherState, Fragment, Version) ->
-%% block_decipher(fun(Key, IV, T) ->
-%% crypto:des_cbc_decrypt(Key, IV, T)
-%% end, CipherState, HashSz, Fragment, Version);
decipher(?'3DES', HashSz, CipherState, Fragment, Version) ->
block_decipher(fun(<<K1:8/binary, K2:8/binary, K3:8/binary>>, IV, T) ->
crypto:des3_cbc_decrypt(K1, K2, K3, IV, T)
@@ -178,7 +169,12 @@ block_decipher(Fun, #cipher_state{key=Key, iv=IV} = CipherState0,
end
catch
_:_ ->
- ?ALERT_REC(?FATAL, ?DECRYPTION_FAILED)
+ %% This is a DECRYPTION_FAILED but
+ %% "differentiating between bad_record_mac and decryption_failed
+ %% alerts may permit certain attacks against CBC mode as used in
+ %% TLS [CBCATT]. It is preferable to uniformly use the
+ %% bad_record_mac alert to hide the specific type of the error."
+ ?ALERT_REC(?FATAL, ?BAD_RECORD_MAC)
end.
%%--------------------------------------------------------------------
-spec suites(tls_version()) -> [cipher_suite()].
@@ -416,8 +412,6 @@ bulk_cipher_algorithm(null) ->
%% ?IDEA;
bulk_cipher_algorithm(rc4_128) ->
?RC4;
-%% bulk_cipher_algorithm(des40_cbc) ->
-%% ?DES40;
bulk_cipher_algorithm(des_cbc) ->
?DES;
bulk_cipher_algorithm('3des_ede_cbc') ->
@@ -431,7 +425,6 @@ type(Cipher) when Cipher == null;
?STREAM;
type(Cipher) when Cipher == idea_cbc;
- Cipher == des40_cbc;
Cipher == des_cbc;
Cipher == '3des_ede_cbc';
Cipher == aes_128_cbc;
@@ -443,8 +436,6 @@ key_material(null) ->
key_material(Cipher) when Cipher == idea_cbc;
Cipher == rc4_128 ->
16;
-%%key_material(des40_cbc) ->
-%% 5;
key_material(des_cbc) ->
8;
key_material('3des_ede_cbc') ->
@@ -459,8 +450,7 @@ expanded_key_material(null) ->
expanded_key_material(Cipher) when Cipher == idea_cbc;
Cipher == rc4_128 ->
16;
-expanded_key_material(Cipher) when Cipher == des_cbc;
- Cipher == des40_cbc ->
+expanded_key_material(Cipher) when Cipher == des_cbc ->
8;
expanded_key_material('3des_ede_cbc') ->
24;
@@ -471,8 +461,6 @@ expanded_key_material(Cipher) when Cipher == aes_128_cbc;
effective_key_bits(null) ->
0;
-%%effective_key_bits(des40_cbc) ->
-%% 40;
effective_key_bits(des_cbc) ->
56;
effective_key_bits(Cipher) when Cipher == idea_cbc;
@@ -491,7 +479,6 @@ iv_size(Cipher) ->
block_size(Cipher).
block_size(Cipher) when Cipher == idea_cbc;
- Cipher == des40_cbc;
Cipher == des_cbc;
Cipher == '3des_ede_cbc' ->
8;
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 3a9cada81e..ce90d22c09 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -967,15 +967,14 @@ handle_info(Msg, StateName, State) ->
%% necessary cleaning up. When it returns, the gen_fsm terminates with
%% Reason. The return value is ignored.
%%--------------------------------------------------------------------
-terminate(_Reason, connection, #state{negotiated_version = Version,
+terminate(Reason, connection, #state{negotiated_version = Version,
connection_states = ConnectionStates,
transport_cb = Transport,
socket = Socket, send_queue = SendQueue,
renegotiation = Renegotiate}) ->
notify_senders(SendQueue),
notify_renegotiater(Renegotiate),
- {BinAlert, _} = encode_alert(?ALERT_REC(?WARNING,?CLOSE_NOTIFY),
- Version, ConnectionStates),
+ BinAlert = terminate_alert(Reason, Version, ConnectionStates),
Transport:send(Socket, BinAlert),
workaround_transport_delivery_problems(Socket, Transport),
Transport:close(Socket);
@@ -1519,7 +1518,7 @@ handle_server_key(
true ->
dh_master_secret(P, G, ServerPublicDhKey, undefined, State);
false ->
- ?ALERT_REC(?FATAL,?HANDSHAKE_FAILURE)
+ ?ALERT_REC(?FATAL, ?DECRYPT_ERROR)
end.
verify_dh_params(Signed, Hashes, {?rsaEncryption, PubKey, _PubKeyParams}) ->
@@ -1574,15 +1573,12 @@ cipher_role(server, Data, Session, #state{connection_states = ConnectionStates0
tls_handshake_hashes =
Hashes})).
encode_alert(#alert{} = Alert, Version, ConnectionStates) ->
- ?DBG_TERM(Alert),
ssl_record:encode_alert_record(Alert, Version, ConnectionStates).
encode_change_cipher(#change_cipher_spec{}, Version, ConnectionStates) ->
- ?DBG_TERM(#change_cipher_spec{}),
ssl_record:encode_change_cipher_spec(Version, ConnectionStates).
encode_handshake(HandshakeRec, Version, ConnectionStates0, Hashes0) ->
- ?DBG_TERM(HandshakeRec),
Frag = ssl_handshake:encode_handshake(HandshakeRec, Version),
Hashes1 = ssl_handshake:update_hashes(Hashes0, Frag),
{E, ConnectionStates1} =
@@ -1840,7 +1836,6 @@ next_state(StateName, #ssl_tls{type = ?APPLICATION_DATA, fragment = Data}, State
next_state(StateName, #ssl_tls{type = ?CHANGE_CIPHER_SPEC, fragment = <<1>>} =
_ChangeCipher,
#state{connection_states = ConnectionStates0} = State0) ->
- ?DBG_TERM(_ChangeCipher),
ConnectionStates1 =
ssl_record:activate_pending_connection_state(ConnectionStates0, read),
{Record, State} = next_record(State0#state{connection_states = ConnectionStates1}),
@@ -2191,6 +2186,15 @@ notify_renegotiater({true, From}) when not is_atom(From) ->
notify_renegotiater(_) ->
ok.
+terminate_alert(Reason, Version, ConnectionStates) when Reason == normal; Reason == shutdown ->
+ {BinAlert, _} = encode_alert(?ALERT_REC(?WARNING, ?CLOSE_NOTIFY),
+ Version, ConnectionStates),
+ BinAlert;
+terminate_alert(_, Version, ConnectionStates) ->
+ {BinAlert, _} = encode_alert(?ALERT_REC(?FATAL, ?INTERNAL_ERROR),
+ Version, ConnectionStates),
+ BinAlert.
+
workaround_transport_delivery_problems(Socket, Transport) ->
%% Standard trick to try to make sure all
%% data sent to to tcp port is really sent
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index f8e5d585e7..7082a23fd0 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -428,13 +428,11 @@ finished(Version, Role, MasterSecret, {Hashes, _}) -> % use the current hashes
verify_connection(Version, #finished{verify_data = Data},
Role, MasterSecret, {_, {MD5, SHA}}) ->
%% use the previous hashes
- ?DBG_HEX(crypto:md5_final(MD5)),
- ?DBG_HEX(crypto:sha_final(SHA)),
case calc_finished(Version, Role, MasterSecret, {MD5, SHA}) of
Data ->
verified;
- _E ->
- ?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE)
+ _ ->
+ ?ALERT_REC(?FATAL, ?DECRYPT_ERROR)
end.
%%--------------------------------------------------------------------
-spec server_hello_done() -> #server_hello_done{}.
@@ -507,11 +505,8 @@ update_hashes(Hashes, % special-case SSL2 client hello
CipherSuites:CSLength/binary,
ChallengeData:CDLength/binary>>);
update_hashes({{MD50, SHA0}, _Prev}, Data) ->
- ?DBG_HEX(Data),
{MD51, SHA1} = {crypto:md5_update(MD50, Data),
crypto:sha_update(SHA0, Data)},
- ?DBG_HEX(crypto:md5_final(MD51)),
- ?DBG_HEX(crypto:sha_final(SHA1)),
{{MD51, SHA1}, {MD50, SHA0}}.
%%--------------------------------------------------------------------
@@ -525,7 +520,7 @@ decrypt_premaster_secret(Secret, RSAPrivateKey) ->
[{rsa_pad, rsa_pkcs1_padding}])
catch
_:_ ->
- throw(?ALERT_REC(?FATAL, ?DECRYPTION_FAILED))
+ throw(?ALERT_REC(?FATAL, ?DECRYPT_ERROR))
end.
%%--------------------------------------------------------------------
@@ -782,8 +777,7 @@ master_secret(Version, MasterSecret, #security_parameters{
ServerWriteKey, ClientIV, ServerIV} =
setup_keys(Version, MasterSecret, ServerRandom,
ClientRandom, HashSize, KML, EKML, IVS),
- ?DBG_HEX(ClientWriteKey),
- ?DBG_HEX(ClientIV),
+
ConnStates1 = ssl_record:set_master_secret(MasterSecret, ConnectionStates),
ConnStates2 =
ssl_record:set_mac_secret(ClientWriteMacSecret, ServerWriteMacSecret,
@@ -807,8 +801,6 @@ dec_hs(?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor),
?UINT16(CDLength),
CipherSuites:CSLength/binary,
ChallengeData:CDLength/binary>>) ->
- ?DBG_HEX(CipherSuites),
- ?DBG_HEX(CipherSuites),
#client_hello{client_version = {Major, Minor},
random = ssl_ssl2:client_random(ChallengeData, CDLength),
session_id = 0,
diff --git a/lib/ssl/src/ssl_record.erl b/lib/ssl/src/ssl_record.erl
index 803baeb09c..e7a2d8ecf1 100644
--- a/lib/ssl/src/ssl_record.erl
+++ b/lib/ssl/src/ssl_record.erl
@@ -649,9 +649,7 @@ cipher(Type, Version, Fragment, CS0) ->
BCA}
}} =
hash_and_bump_seqno(CS0, Type, Version, Length, Fragment),
- ?DBG_HEX(Fragment),
{Ciphered, CipherS1} = ssl_cipher:cipher(BCA, CipherS0, MacHash, Fragment),
- ?DBG_HEX(Ciphered),
CS2 = CS1#connection_state{cipher_state=CipherS1},
{Ciphered, CS2}.
diff --git a/lib/ssl/src/ssl_ssl3.erl b/lib/ssl/src/ssl_ssl3.erl
index f3cb6ad66e..18c3f4ed3d 100644
--- a/lib/ssl/src/ssl_ssl3.erl
+++ b/lib/ssl/src/ssl_ssl3.erl
@@ -41,9 +41,6 @@
-spec master_secret(binary(), binary(), binary()) -> binary().
master_secret(PremasterSecret, ClientRandom, ServerRandom) ->
- ?DBG_HEX(PremasterSecret),
- ?DBG_HEX(ClientRandom),
- ?DBG_HEX(ServerRandom),
%% draft-ietf-tls-ssl-version3-00 - 6.2.2
%% key_block =
%% MD5(master_secret + SHA(`A' + master_secret +
@@ -55,9 +52,8 @@ master_secret(PremasterSecret, ClientRandom, ServerRandom) ->
%% MD5(master_secret + SHA(`CCC' + master_secret +
%% ServerHello.random +
%% ClientHello.random)) + [...];
- B = generate_keyblock(PremasterSecret, ClientRandom, ServerRandom, 48),
- ?DBG_HEX(B),
- B.
+ Block = generate_keyblock(PremasterSecret, ClientRandom, ServerRandom, 48),
+ Block.
-spec finished(client | server, binary(), {binary(), binary()}) -> binary().
@@ -110,14 +106,11 @@ mac_hash(Method, Mac_write_secret, Seq_num, Type, Length, Fragment) ->
case Method of
?NULL -> ok;
_ ->
- ?DBG_HEX(Mac_write_secret),
- ?DBG_HEX(hash(Method, Fragment)),
ok
end,
Mac = mac_hash(Method, Mac_write_secret,
[<<?UINT64(Seq_num), ?BYTE(Type),
?UINT16(Length)>>, Fragment]),
- ?DBG_HEX(Mac),
Mac.
-spec setup_keys(binary(), binary(), binary(),
@@ -139,12 +132,6 @@ setup_keys(MasterSecret, ServerRandom, ClientRandom, HS, KML, _EKML, IVS) ->
<<ClientWriteMacSecret:HS/binary, ServerWriteMacSecret:HS/binary,
ClientWriteKey:KML/binary, ServerWriteKey:KML/binary,
ClientIV:IVS/binary, ServerIV:IVS/binary>> = KeyBlock,
- ?DBG_HEX(ClientWriteMacSecret),
- ?DBG_HEX(ServerWriteMacSecret),
- ?DBG_HEX(ClientWriteKey),
- ?DBG_HEX(ServerWriteKey),
- ?DBG_HEX(ClientIV),
- ?DBG_HEX(ServerIV),
{ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey,
ServerWriteKey, ClientIV, ServerIV}.
diff --git a/lib/ssl/src/ssl_tls1.erl b/lib/ssl/src/ssl_tls1.erl
index dd66418dd8..88394b23ba 100644
--- a/lib/ssl/src/ssl_tls1.erl
+++ b/lib/ssl/src/ssl_tls1.erl
@@ -132,15 +132,12 @@ mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor},
case Method of
?NULL -> ok;
_ ->
- ?DBG_HEX(Mac_write_secret),
- ?DBG_HEX(hash(Method, Fragment)),
ok
end,
Mac = hmac_hash(Method, Mac_write_secret,
[<<?UINT64(Seq_num), ?BYTE(Type),
?BYTE(Major), ?BYTE(Minor), ?UINT16(Length)>>,
Fragment]),
- ?DBG_HEX(Mac),
Mac.
-spec suites() -> [cipher_suite()].
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 20:35:36 +0000