From 04397344762d506ac0286118d36e1a5b330dceb2 Mon Sep 17 00:00:00 2001
From: Ingela Anderton Andin <ingela@erlang.org>
Date: Fri, 5 Feb 2016 17:39:04 +0100
Subject: ssl: Add option signature_algs

In TLS-1.2 The signature algorithm and the hash function algorithm
used to produce the digest that is used when creating the digital signature
may be negotiated through the signature algorithm extension RFC 5246.

We want to make these algorithm pairs configurable.
In connections using lower versions of TLS these algorithms are
implicit defined and can not be negotiated or configured.

DTLS is updated to not cause dialyzer errors, but needs to get a real
implementation later.
---
 lib/ssl/test/ssl_basic_SUITE.erl | 58 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

(limited to 'lib/ssl/test/ssl_basic_SUITE.erl')

diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index 1a864edb8b..5e4647c73a 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -58,7 +58,7 @@ all() ->
 groups() ->
     [{basic, [], basic_tests()},
      {options, [], options_tests()},
-     {'tlsv1.2', [], all_versions_groups()},
+     {'tlsv1.2', [], all_versions_groups() ++ [conf_signature_algs, no_common_signature_algs]},
      {'tlsv1.1', [], all_versions_groups()},
      {'tlsv1', [], all_versions_groups() ++ rizzo_tests()},
      {'sslv3', [], all_versions_groups() ++ rizzo_tests() ++ [ciphersuite_vs_version]},
@@ -2876,7 +2876,61 @@ ciphersuite_vs_version(Config) when is_list(Config) ->
 	_ ->
 	    ct:fail({unexpected_server_hello, ServerHello})
     end.
-										
+			
+%%--------------------------------------------------------------------
+conf_signature_algs() ->
+    [{doc,"Test to set the signature_algs option on both client and server"}].
+conf_signature_algs(Config) when is_list(Config) -> 
+    ClientOpts = ?config(client_opts, Config),
+    ServerOpts = ?config(server_opts, Config),
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+    Server = 
+	ssl_test_lib:start_server([{node, ServerNode}, {port, 0}, 
+				   {from, self()}, 
+				   {mfa, {ssl_test_lib, send_recv_result, []}},
+				   {options,  [{active, false}, {signature_algs, [{sha256, rsa}]} | ServerOpts]}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = 
+	ssl_test_lib:start_client([{node, ClientNode}, {port, Port}, 
+				   {host, Hostname},
+				   {from, self()}, 
+				   {mfa, {ssl_test_lib, send_recv_result, []}},
+				   {options, [{active, false}, {signature_algs, [{sha256, rsa}]} | ClientOpts]}]),
+    
+    ct:log("Testcase ~p, Client ~p  Server ~p ~n",
+			 [self(), Client, Server]),
+    
+    ssl_test_lib:check_result(Server, ok, Client, ok),
+    
+    ssl_test_lib:close(Server),
+    ssl_test_lib:close(Client).
+
+
+%%--------------------------------------------------------------------
+no_common_signature_algs()  ->
+    [{doc,"Set the signature_algs option so that there client and server does not share any hash sign algorithms"}].
+no_common_signature_algs(Config) when is_list(Config) ->
+    
+    ClientOpts = ?config(client_opts, Config),
+    ServerOpts = ?config(server_opts, Config),
+
+    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+
+    Server = ssl_test_lib:start_server_error([{node, ServerNode}, {port, 0},
+					      {from, self()},
+					      {options, [{signature_algs, [{sha256, rsa}]}
+							 | ServerOpts]}]),
+    Port = ssl_test_lib:inet_port(Server),
+    Client = ssl_test_lib:start_client_error([{node, ClientNode}, {port, Port},
+					      {host, Hostname},
+					      {from, self()}, 
+					      {options, [{signature_algs, [{sha384, rsa}]}
+							 | ClientOpts]}]),
+    
+    ssl_test_lib:check_result(Server, {error, {tls_alert, "insufficient security"}},
+			      Client, {error, {tls_alert, "insufficient security"}}).
+    						
 %%--------------------------------------------------------------------
 
 dont_crash_on_handshake_garbage() ->
-- 
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