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authorAndreas Schultz <[email protected]>2012-09-20 11:29:02 +0200
committerIngela Anderton Andin <[email protected]>2013-01-17 14:48:43 +0100
commite825090fd18face13a2d89f2676d810f96b2c69c (patch)
treef20ad923aa759609aa59d649cc7a9a5dd0641b81 /lib
parent5456bca05c06426bb8d45de77159734a264620e1 (diff)
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SSL: unify the different implementations signature check implementations
ssl_handshake and ssl_connection where doing essentially the same when checking a public key signature. This unify both into a single function
Diffstat (limited to 'lib')
-rw-r--r--lib/ssl/src/ssl_connection.erl15
-rw-r--r--lib/ssl/src/ssl_handshake.erl56
2 files changed, 28 insertions, 43 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index cde13069b5..9a2cc0c91e 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -1665,26 +1665,13 @@ handle_server_key(
?UINT16(YLen),
ServerPublicDhKey/binary>>),
- case verify_dh_params(Version, Signed, Hash, HashAlgo, PubKeyInfo) of
+ case ssl_handshake:verify_signature(Version, Hash, HashSign, Signature, PubKeyInfo) of
true ->
dh_master_secret(P, G, ServerPublicDhKey, undefined, 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),
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index db21dac942..c0618d687d 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -32,7 +32,7 @@
-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,
@@ -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()) ->
@@ -1328,8 +1339,8 @@ 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 +1389,6 @@ 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}).