The R13B03 release.OTP_R13B03

1 files changed, 286 insertions, 0 deletions

diff --git a/lib/ssl/src/ssl_ssl3.erl b/lib/ssl/src/ssl_ssl3.erl
new file mode 100644
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+++ b/lib/ssl/src/ssl_ssl3.erl
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+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2007-2009. 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
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+
+%%
+%%----------------------------------------------------------------------
+%% Purpose: Handles sslv3 encryption.
+%%----------------------------------------------------------------------
+
+-module(ssl_ssl3).
+
+-include("ssl_cipher.hrl").
+-include("ssl_debug.hrl").
+-include("ssl_internal.hrl").
+-include("ssl_record.hrl"). 			% MD5 and SHA
+
+-export([master_secret/3, finished/3, certificate_verify/3,
+	 mac_hash/6, setup_keys/8, 
+	 suites/0]).
+-compile(inline).
+
+%%====================================================================
+%% Internal application API
+%%====================================================================
+
+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 +
+    %%                           ServerHello.random +
+    %%                           ClientHello.random)) +
+    %%   MD5(master_secret + SHA(`BB' + master_secret +
+    %%                           ServerHello.random +
+    %%                           ClientHello.random)) +
+    %%   MD5(master_secret + SHA(`CCC' + master_secret +
+    %%                           ServerHello.random +
+    %%                           ClientHello.random)) + [...];
+    B = generate_keyblock(PremasterSecret, ClientRandom, ServerRandom, 48),
+    ?DBG_HEX(B),
+    B.
+
+finished(Role, MasterSecret, {MD5Hash, SHAHash}) ->
+   %%  draft-ietf-tls-ssl-version3-00 - 5.6.9 Finished
+   %%     struct {
+   %%      opaque md5_hash[16];
+   %%      opaque sha_hash[20];
+   %%  } Finished;
+   %% 
+   %%   md5_hash       MD5(master_secret + pad2 +
+   %%                     MD5(handshake_messages + Sender +
+   %%                         master_secret + pad1));
+   %%  sha_hash        SHA(master_secret + pad2 +
+   %%                      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/binary, SHA/binary>>.
+
+certificate_verify(Algorithm, MasterSecret, {MD5Hash, SHAHash}) 
+  when Algorithm == rsa; Algorithm == dh_rsa; Algorithm == dhe_rsa ->
+     %% md5_hash
+     %%           MD5(master_secret + pad_2 +
+     %%               MD5(handshake_messages + master_secret + pad_1));
+     %% sha_hash
+     %%           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/binary, SHA/binary>>;
+
+certificate_verify(Algorithm, MasterSecret, {_, SHAHash}) 
+  when Algorithm == dh_dss; Algorithm == dhe_dss ->
+     %% sha_hash
+     %%           SHA(master_secret + pad_2 +
+     %%               SHA(handshake_messages + master_secret + pad_1));
+    handshake_hash(?SHA, MasterSecret, undefined, SHAHash).
+
+mac_hash(Method, Mac_write_secret, Seq_num, Type, Length, Fragment) ->
+    %% draft-ietf-tls-ssl-version3-00 - 5.2.3.1 
+    %% hash(MAC_write_secret + pad_2 +
+    %%      hash(MAC_write_secret + pad_1 + seq_num +
+    %%           SSLCompressed.type + SSLCompressed.length +
+    %%           SSLCompressed.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.
+
+setup_keys(Exportable, MasterSecret, ServerRandom, ClientRandom, 
+	   HS, KML, _EKML, IVS)
+  when Exportable == no_export; Exportable == ignore ->
+    KeyBlock = generate_keyblock(MasterSecret, ServerRandom, ClientRandom,
+				 2*(HS+KML+IVS)),
+    %%  draft-ietf-tls-ssl-version3-00 - 6.2.2
+    %% The key_block is partitioned as follows.
+    %% client_write_MAC_secret[CipherSpec.hash_size]
+    %% server_write_MAC_secret[CipherSpec.hash_size]
+    %% client_write_key[CipherSpec.key_material]
+    %% server_write_key[CipherSpec.key_material]
+    %% client_write_IV[CipherSpec.IV_size] /* non-export ciphers */
+    %% server_write_IV[CipherSpec.IV_size] /* non-export ciphers */
+    <<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};
+
+setup_keys(export, MasterSecret, ServerRandom, ClientRandom, 
+	   HS, KML, EKML, IVS) ->
+    KeyBlock = generate_keyblock(MasterSecret, ServerRandom, ClientRandom,
+				 2*(HS+KML)),
+    %%  draft-ietf-tls-ssl-version3-00 - 6.2.2
+    %%  Exportable encryption algorithms (for which
+    %%  CipherSpec.is_exportable is true) require additional processing as
+    %%  follows to derive their final write keys:
+
+    %%  final_client_write_key = MD5(client_write_key +
+    %%                               ClientHello.random +
+    %%                               ServerHello.random);
+    %%  final_server_write_key = MD5(server_write_key +
+    %%                               ServerHello.random +
+    %%                               ClientHello.random);
+
+    %%  Exportable encryption algorithms derive their IVs from the random
+    %%  messages:
+    %%  client_write_IV = MD5(ClientHello.random + ServerHello.random);
+    %%  server_write_IV = MD5(ServerHello.random + ClientHello.random);
+
+    <<ClientWriteMacSecret:HS/binary, ServerWriteMacSecret:HS/binary,
+     ClientWriteKey:KML/binary, ServerWriteKey:KML/binary>> = KeyBlock,
+    <<ClientIV:IVS/binary, _/binary>> = 
+	hash(?MD5, [ClientRandom, ServerRandom]),
+    <<ServerIV:IVS/binary, _/binary>> = 
+	hash(?MD5, [ServerRandom, ClientRandom]),
+    <<FinalClientWriteKey:EKML/binary, _/binary>> = 
+	hash(?MD5, [ClientWriteKey, ClientRandom, ServerRandom]),
+    <<FinalServerWriteKey:EKML/binary, _/binary>> = 
+	hash(?MD5, [ServerWriteKey, ServerRandom, ClientRandom]),
+    ?DBG_HEX(ClientWriteMacSecret),
+    ?DBG_HEX(ServerWriteMacSecret),
+    ?DBG_HEX(FinalClientWriteKey),
+    ?DBG_HEX(FinalServerWriteKey),
+    ?DBG_HEX(ClientIV),
+    ?DBG_HEX(ServerIV),
+    {ClientWriteMacSecret, ServerWriteMacSecret, FinalClientWriteKey,
+     FinalServerWriteKey, ClientIV, ServerIV}.
+
+suites() ->
+    [ 
+      %% TODO: uncomment when supported
+      %%       ?TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
+      %%       ?TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
+      %% TODO: Funkar inte, borde: ?TLS_RSA_WITH_AES_256_CBC_SHA,
+      %%       ?TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
+      %%       ?TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
+      ?TLS_RSA_WITH_3DES_EDE_CBC_SHA,
+      %%       ?TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
+      %%       ?TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
+      ?TLS_RSA_WITH_AES_128_CBC_SHA,
+      %%?TLS_DHE_DSS_WITH_RC4_128_SHA, TODO: Support this?
+      %% ?TLS_RSA_WITH_IDEA_CBC_SHA, Not supported: in later openssl version than OTP requires
+      
+      ?TLS_RSA_WITH_RC4_128_SHA,
+      ?TLS_RSA_WITH_RC4_128_MD5,
+      %%?TLS_RSA_EXPORT1024_WITH_RC4_56_MD5,
+      %%?TLS_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5,
+      %%?TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA,
+      %%?TLS_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA,
+      %%?TLS_RSA_EXPORT1024_WITH_RC4_56_SHA,
+      %%?TLS_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA,
+      %%?TLS_DHE_DSS_WITH_RC4_128_SHA,
+
+      ?TLS_RSA_WITH_DES_CBC_SHA
+      %%       ?TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA,
+      %%       ?TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA,
+      %% ?TLS_RSA_EXPORT_WITH_DES40_CBC_SHA,
+      %%?TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5,
+      %%?TLS_RSA_EXPORT_WITH_RC4_40_MD5
+     ].
+
+%%--------------------------------------------------------------------
+%%% Internal functions
+%%--------------------------------------------------------------------
+
+hash(?MD5, Data) -> 
+    crypto: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) ->
+    <<"666666666666666666666666666666666666666666666666">>;
+pad_1(?SHA) ->
+    <<"6666666666666666666666666666666666666666">>.
+
+%%pad_2(?NULL) ->
+%%    "";
+pad_2(?MD5) ->
+    <<"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
+     "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\">>;
+pad_2(?SHA) ->
+    <<"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
+     "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\">>.
+
+mac_hash(?NULL, _Secret, _Data) ->
+    <<>>;
+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)]),
+    hash(Method, [MasterSecret, pad_2(Method), InnerHash]);
+handshake_hash(Method, MasterSecret, Sender, HandshakeHash) ->
+    InnerHash = 
+	handshake_hash(Method, HandshakeHash, 
+		       [Sender, MasterSecret, pad_1(Method)]),
+    hash(Method, [MasterSecret, pad_2(Method), InnerHash]).
+
+get_sender(client) -> "CLNT";
+get_sender(server) -> "SRVR";
+get_sender(none) -> "".
+
+generate_keyblock(MasterSecret, ServerRandom, ClientRandom, WantedLength) ->
+    gen(MasterSecret, [MasterSecret, ServerRandom, ClientRandom],
+	WantedLength, 0, $A, 1, []).
+
+gen(_Secret, _All, Wanted, Len, _C, _N, Acc) when Wanted =< Len ->
+    <<Block:Wanted/binary, _/binary>> = list_to_binary(lists:reverse(Acc)),
+    Block;
+gen(Secret, All, Wanted, Len, C, N, Acc) ->
+    Prefix = lists:duplicate(N, C),
+    SHA = crypto:sha([Prefix, All]),
+    MD5 = crypto:md5([Secret, SHA]),
+    gen(Secret, All, Wanted, Len + 16, C+1, N+1, [MD5 | Acc]).