aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ssl/src/tls_handshake.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/ssl/src/tls_handshake.erl')
-rw-r--r--lib/ssl/src/tls_handshake.erl92
1 files changed, 71 insertions, 21 deletions
diff --git a/lib/ssl/src/tls_handshake.erl b/lib/ssl/src/tls_handshake.erl
index 51fd2e1dc9..bd2e02449b 100644
--- a/lib/ssl/src/tls_handshake.erl
+++ b/lib/ssl/src/tls_handshake.erl
@@ -34,11 +34,12 @@
-export([master_secret/4, client_hello/8, server_hello/7, hello/4,
hello_request/0, certify/7, certificate/4,
client_certificate_verify/6, certificate_verify/6, verify_signature/5,
- certificate_request/3, key_exchange/3, server_key_exchange_hash/2,
+ certificate_request/4, key_exchange/3, server_key_exchange_hash/2,
finished/5, verify_connection/6, get_tls_handshake/3,
decode_client_key/3, decode_server_key/3, server_hello_done/0,
encode_handshake/2, init_handshake_history/0, update_handshake_history/2,
- decrypt_premaster_secret/2, prf/5, next_protocol/1]).
+ decrypt_premaster_secret/2, prf/5, next_protocol/1, select_hashsign/2,
+ select_cert_hashsign/3, default_hash_signs/0]).
-export([dec_hello_extensions/2]).
@@ -82,7 +83,7 @@ client_hello(Host, Port, ConnectionStates,
renegotiation_info =
renegotiation_info(client, ConnectionStates, Renegotiation),
srp = SRP,
- hash_signs = default_hash_signs(),
+ hash_signs = advertised_hash_signs(Version),
ec_point_formats = EcPointFormats,
elliptic_curves = EllipticCurves,
next_protocol_negotiation =
@@ -152,7 +153,6 @@ hello(#server_hello{cipher_suite = CipherSuite, server_version = Version,
#ssl_options{secure_renegotiate = SecureRenegotation, next_protocol_selector = NextProtocolSelector,
versions = SupportedVersions},
ConnectionStates0, Renegotiation) ->
- %%TODO: select hash and signature algorigthm
case tls_record:is_acceptable_version(Version, SupportedVersions) of
true ->
case handle_renegotiation_info(client, Info, ConnectionStates0,
@@ -177,7 +177,6 @@ hello(#server_hello{cipher_suite = CipherSuite, server_version = Version,
hello(#client_hello{client_version = ClientVersion} = Hello,
#ssl_options{versions = Versions} = SslOpts,
{Port, Session0, Cache, CacheCb, ConnectionStates0, Cert}, Renegotiation) ->
- %% TODO: select hash and signature algorithm
Version = select_version(ClientVersion, Versions),
case tls_record:is_acceptable_version(Version, Versions) of
true ->
@@ -298,7 +297,7 @@ client_certificate_verify(undefined, _, _, _, _, _) ->
client_certificate_verify(_, _, _, _, undefined, _) ->
ignore;
client_certificate_verify(OwnCert, MasterSecret, Version,
- {HashAlgo, SignAlgo},
+ {HashAlgo, _} = HashSign,
PrivateKey, {Handshake, _}) ->
case public_key:pkix_is_fixed_dh_cert(OwnCert) of
true ->
@@ -307,7 +306,7 @@ client_certificate_verify(OwnCert, MasterSecret, Version,
Hashes =
calc_certificate_verify(Version, HashAlgo, MasterSecret, Handshake),
Signed = digitally_signed(Version, Hashes, HashAlgo, PrivateKey),
- #certificate_verify{signature = Signed, hashsign_algorithm = {HashAlgo, SignAlgo}}
+ #certificate_verify{signature = Signed, hashsign_algorithm = HashSign}
end.
%%--------------------------------------------------------------------
@@ -349,17 +348,17 @@ verify_signature(_Version, Hash, {HashAlgo, ecdsa}, Signature, {?'id-ecPublicKey
public_key:verify({digest, Hash}, HashAlgo, Signature, {PublicKey, PublicKeyParams}).
%%--------------------------------------------------------------------
--spec certificate_request(#connection_states{}, db_handle(), certdb_ref()) ->
+-spec certificate_request(#connection_states{}, db_handle(), certdb_ref(), tls_version()) ->
#certificate_request{}.
%%
%% Description: Creates a certificate_request message, called by the server.
%%--------------------------------------------------------------------
-certificate_request(ConnectionStates, CertDbHandle, CertDbRef) ->
+certificate_request(ConnectionStates, CertDbHandle, CertDbRef, Version) ->
#connection_state{security_parameters =
#security_parameters{cipher_suite = CipherSuite}} =
tls_record:pending_connection_state(ConnectionStates, read),
Types = certificate_types(CipherSuite),
- HashSigns = default_hash_signs(),
+ HashSigns = advertised_hash_signs(Version),
Authorities = certificate_authorities(CertDbHandle, CertDbRef),
#certificate_request{
certificate_types = Types,
@@ -687,6 +686,54 @@ prf({3,1}, Secret, Label, Seed, WantedLength) ->
prf({3,_N}, Secret, Label, Seed, WantedLength) ->
{ok, ssl_tls1:prf(?SHA256, Secret, Label, Seed, WantedLength)}.
+
+%%--------------------------------------------------------------------
+-spec select_hashsign(#hash_sign_algos{}| undefined, undefined | term()) ->
+ [{atom(), atom()}] | undefined.
+
+%%
+%% Description:
+%%--------------------------------------------------------------------
+select_hashsign(_, undefined) ->
+ {null, anon};
+select_hashsign(undefined, Cert) ->
+ #'OTPCertificate'{tbsCertificate = TBSCert} = public_key:pkix_decode_cert(Cert, otp),
+ #'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
+ select_cert_hashsign(undefined, Algo, {undefined, undefined});
+select_hashsign(#hash_sign_algos{hash_sign_algos = HashSigns}, Cert) ->
+ #'OTPCertificate'{tbsCertificate = TBSCert} =public_key:pkix_decode_cert(Cert, otp),
+ #'OTPSubjectPublicKeyInfo'{algorithm = {_,Algo, _}} = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
+ DefaultHashSign = {_, Sign} = select_cert_hashsign(undefined, Algo, {undefined, undefined}),
+ case lists:filter(fun({sha, dsa}) ->
+ true;
+ ({_, dsa}) ->
+ false;
+ ({Hash, S}) when S == Sign ->
+ ssl_cipher:is_acceptable_hash(Hash, proplists:get_value(hashs, crypto:supports()));
+ (_) ->
+ false
+ end, HashSigns) of
+ [] ->
+ DefaultHashSign;
+ [HashSign| _] ->
+ HashSign
+ end.
+%%--------------------------------------------------------------------
+-spec select_cert_hashsign(#hash_sign_algos{}| undefined, oid(), tls_version()) ->
+ [{atom(), atom()}].
+
+%%
+%% Description:
+%%--------------------------------------------------------------------
+select_cert_hashsign(HashSign, _, {Major, Minor}) when HashSign =/= undefined andalso Major >= 3 andalso Minor >= 3 ->
+ HashSign;
+select_cert_hashsign(undefined,?'id-ecPublicKey', _) ->
+ {sha, ecdsa};
+select_cert_hashsign(undefined, ?rsaEncryption, _) ->
+ {md5sha, rsa};
+select_cert_hashsign(undefined, ?'id-dsa', _) ->
+ {sha, dsa}.
+
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
@@ -1066,7 +1113,7 @@ dec_hs(_Version, ?CLIENT_HELLO, <<?BYTE(Major), ?BYTE(Minor), Random:32/binary,
cipher_suites = from_2bytes(CipherSuites),
compression_methods = Comp_methods,
renegotiation_info = RenegotiationInfo,
- srp = SRP,
+ srp = SRP,
hash_signs = HashSigns,
elliptic_curves = EllipticCurves,
next_protocol_negotiation = NextProtocolNegotiation
@@ -1179,12 +1226,12 @@ dec_ske_params(Len, Keys, Version) ->
dec_ske_signature(Params, <<?BYTE(HashAlgo), ?BYTE(SignAlgo),
?UINT16(0)>>, {Major, Minor})
- when Major == 3, Minor >= 3 ->
+ when Major >= 3, Minor >= 3 ->
HashSign = {ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)},
{Params, HashSign, <<>>};
dec_ske_signature(Params, <<?BYTE(HashAlgo), ?BYTE(SignAlgo),
?UINT16(Len), Signature:Len/binary>>, {Major, Minor})
- when Major == 3, Minor >= 3 ->
+ when Major >= 3, Minor >= 3 ->
HashSign = {ssl_cipher:hash_algorithm(HashAlgo), ssl_cipher:sign_algorithm(SignAlgo)},
{Params, HashSign, Signature};
dec_ske_signature(Params, <<>>, _) ->
@@ -1219,11 +1266,11 @@ dec_server_key(<<?BYTE(?NAMED_CURVE), ?UINT16(CurveID),
params_bin = BinMsg,
hashsign = HashSign,
signature = Signature};
-dec_server_key(<<?UINT16(Len), PskIdentityHint:Len/binary>> = KeyStruct,
+dec_server_key(<<?UINT16(Len), PskIdentityHint:Len/binary, _/binary>> = KeyStruct,
KeyExchange, Version)
when KeyExchange == ?KEY_EXCHANGE_PSK; KeyExchange == ?KEY_EXCHANGE_RSA_PSK ->
Params = #server_psk_params{
- hint = PskIdentityHint},
+ hint = PskIdentityHint},
{BinMsg, HashSign, Signature} = dec_ske_params(Len + 2, KeyStruct, Version),
#server_key_params{params = Params,
params_bin = BinMsg,
@@ -1236,8 +1283,8 @@ dec_server_key(<<?UINT16(Len), IdentityHint:Len/binary,
?KEY_EXCHANGE_DHE_PSK, Version) ->
DHParams = #server_dh_params{dh_p = P, dh_g = G, dh_y = Y},
Params = #server_dhe_psk_params{
- hint = IdentityHint,
- dh_params = DHParams},
+ hint = IdentityHint,
+ dh_params = DHParams},
{BinMsg, HashSign, Signature} = dec_ske_params(Len + PLen + GLen + YLen + 8, KeyStruct, Version),
#server_key_params{params = Params,
params_bin = BinMsg,
@@ -1297,16 +1344,14 @@ dec_hello_extensions(<<?UINT16(?SIGNATURE_ALGORITHMS_EXT), ?UINT16(Len),
dec_hello_extensions(<<?UINT16(?ELLIPTIC_CURVES_EXT), ?UINT16(Len),
ExtData:Len/binary, Rest/binary>>, Acc) ->
- EllipticCurveListLen = Len - 2,
- <<?UINT16(EllipticCurveListLen), EllipticCurveList/binary>> = ExtData,
+ <<?UINT16(_), EllipticCurveList/binary>> = ExtData,
EllipticCurves = [ssl_tls1:enum_to_oid(X) || <<X:16>> <= EllipticCurveList],
dec_hello_extensions(Rest, [{elliptic_curves,
#elliptic_curves{elliptic_curve_list = EllipticCurves}} | Acc]);
dec_hello_extensions(<<?UINT16(?EC_POINT_FORMATS_EXT), ?UINT16(Len),
ExtData:Len/binary, Rest/binary>>, Acc) ->
- ECPointFormatListLen = Len - 1,
- <<?BYTE(ECPointFormatListLen), ECPointFormatList/binary>> = ExtData,
+ <<?BYTE(_), ECPointFormatList/binary>> = ExtData,
ECPointFormats = binary_to_list(ECPointFormatList),
dec_hello_extensions(Rest, [{ec_point_formats,
#ec_point_formats{ec_point_format_list = ECPointFormats}} | Acc]);
@@ -1825,3 +1870,8 @@ handle_srp_extension(#srp{username = Username}, Session) ->
int_to_bin(I) ->
L = (length(integer_to_list(I, 16)) + 1) div 2,
<<I:(L*8)>>.
+
+advertised_hash_signs({Major, Minor}) when Major >= 3 andalso Minor >= 3 ->
+ default_hash_signs();
+advertised_hash_signs(_) ->
+ undefined.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 05:40:42 +0000