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-rw-r--r--lib/ssl/src/ssl_handshake.erl143
1 files changed, 92 insertions, 51 deletions
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index a6d39f0af1..f8e5d585e7 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -237,7 +237,7 @@ certificate(OwnCert, CertDbRef, client) ->
{error, _} ->
%% If no suitable certificate is available, the client
%% SHOULD send a certificate message containing no
- %% certificates. (chapter 7.4.6. rfc 4346)
+ %% certificates. (chapter 7.4.6. RFC 4346)
[]
end,
#certificate{asn1_certificates = Chain};
@@ -352,15 +352,22 @@ key_exchange(server, {dh, {<<?UINT32(Len), PublicKey:Len/binary>>, _},
YLen = byte_size(PublicKey),
ServerDHParams = #server_dh_params{dh_p = PBin,
dh_g = GBin, dh_y = PublicKey},
- Hash =
- server_key_exchange_hash(KeyAlgo, <<ClientRandom/binary,
- ServerRandom/binary,
- ?UINT16(PLen), PBin/binary,
- ?UINT16(GLen), GBin/binary,
- ?UINT16(YLen), PublicKey/binary>>),
- Signed = digitally_signed(Hash, PrivateKey),
- #server_key_exchange{params = ServerDHParams,
- signed_params = Signed}.
+
+ case KeyAlgo of
+ dh_anon ->
+ #server_key_exchange{params = ServerDHParams,
+ signed_params = <<>>};
+ _ ->
+ Hash =
+ server_key_exchange_hash(KeyAlgo, <<ClientRandom/binary,
+ ServerRandom/binary,
+ ?UINT16(PLen), PBin/binary,
+ ?UINT16(GLen), GBin/binary,
+ ?UINT16(YLen), PublicKey/binary>>),
+ Signed = digitally_signed(Hash, PrivateKey),
+ #server_key_exchange{params = ServerDHParams,
+ signed_params = Signed}
+ end.
%%--------------------------------------------------------------------
-spec master_secret(tls_version(), #session{} | binary(), #connection_states{},
@@ -470,6 +477,73 @@ decode_client_key(ClientKey, Type, Version) ->
dec_client_key(ClientKey, key_exchange_alg(Type), Version).
%%--------------------------------------------------------------------
+-spec init_hashes() ->{{binary(), binary()}, {binary(), binary()}}.
+
+%%
+%% Description: Calls crypto hash (md5 and sha) init functions to
+%% initalize the hash context.
+%%--------------------------------------------------------------------
+init_hashes() ->
+ T = {crypto:md5_init(), crypto:sha_init()},
+ {T, T}.
+
+%%--------------------------------------------------------------------
+-spec update_hashes({{binary(), binary()}, {binary(), binary()}}, Data ::term()) ->
+ {{binary(), binary()}, {binary(), binary()}}.
+%%
+%% Description: Calls crypto hash (md5 and sha) update functions to
+%% update the hash context with Data.
+%%--------------------------------------------------------------------
+update_hashes(Hashes, % special-case SSL2 client hello
+ <<?CLIENT_HELLO, ?UINT24(_), ?BYTE(Major), ?BYTE(Minor),
+ ?UINT16(CSLength), ?UINT16(0),
+ ?UINT16(CDLength),
+ CipherSuites:CSLength/binary,
+ ChallengeData:CDLength/binary>>) ->
+ update_hashes(Hashes,
+ <<?CLIENT_HELLO, ?BYTE(Major), ?BYTE(Minor),
+ ?UINT16(CSLength), ?UINT16(0),
+ ?UINT16(CDLength),
+ 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}}.
+
+%%--------------------------------------------------------------------
+-spec decrypt_premaster_secret(binary(), #'RSAPrivateKey'{}) -> binary().
+
+%%
+%% Description: Public key decryption using the private key.
+%%--------------------------------------------------------------------
+decrypt_premaster_secret(Secret, RSAPrivateKey) ->
+ try public_key:decrypt_private(Secret, RSAPrivateKey,
+ [{rsa_pad, rsa_pkcs1_padding}])
+ catch
+ _:_ ->
+ throw(?ALERT_REC(?FATAL, ?DECRYPTION_FAILED))
+ end.
+
+%%--------------------------------------------------------------------
+-spec server_key_exchange_hash(rsa | dhe_rsa| dhe_dss | dh_anon, binary()) -> binary().
+
+%%
+%% Description: Calculate server key exchange hash
+%%--------------------------------------------------------------------
+server_key_exchange_hash(Algorithm, Value) when Algorithm == rsa;
+ Algorithm == dhe_rsa ->
+ MD5 = crypto:md5(Value),
+ SHA = crypto:sha(Value),
+ <<MD5/binary, SHA/binary>>;
+
+server_key_exchange_hash(dhe_dss, Value) ->
+ crypto:sha(Value).
+
+%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
get_tls_handshake_aux(<<?BYTE(Type), ?UINT24(Length),
@@ -790,6 +864,13 @@ dec_hs(?CERTIFICATE, <<?UINT24(ACLen), ASN1Certs:ACLen/binary>>) ->
dec_hs(?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P:PLen/binary,
?UINT16(GLen), G:GLen/binary,
?UINT16(YLen), Y:YLen/binary,
+ ?UINT16(0)>>) -> %% May happen if key_algorithm is dh_anon
+ #server_key_exchange{params = #server_dh_params{dh_p = P,dh_g = G,
+ dh_y = Y},
+ signed_params = <<>>};
+dec_hs(?SERVER_KEY_EXCHANGE, <<?UINT16(PLen), P:PLen/binary,
+ ?UINT16(GLen), G:GLen/binary,
+ ?UINT16(YLen), Y:YLen/binary,
?UINT16(Len), Sig:Len/binary>>) ->
#server_key_exchange{params = #server_dh_params{dh_p = P,dh_g = G,
dh_y = Y},
@@ -857,14 +938,6 @@ encrypted_premaster_secret(Secret, RSAPublicKey) ->
throw(?ALERT_REC(?FATAL, ?HANDSHAKE_FAILURE))
end.
-decrypt_premaster_secret(Secret, RSAPrivateKey) ->
- try public_key:decrypt_private(Secret, RSAPrivateKey,
- [{rsa_pad, rsa_pkcs1_padding}])
- catch
- _:_ ->
- throw(?ALERT_REC(?FATAL, ?DECRYPTION_FAILED))
- end.
-
%% encode/decode stream of certificate data to/from list of certificate data
certs_to_list(ASN1Certs) ->
certs_to_list(ASN1Certs, []).
@@ -983,29 +1056,6 @@ enc_hello_extensions([#renegotiation_info{renegotiated_connection = Info} | Rest
Len = InfoLen +1,
enc_hello_extensions(Rest, <<?UINT16(?RENEGOTIATION_EXT), ?UINT16(Len), ?BYTE(InfoLen), Info/binary, Acc/binary>>).
-init_hashes() ->
- T = {crypto:md5_init(), crypto:sha_init()},
- {T, T}.
-
-update_hashes(Hashes, % special-case SSL2 client hello
- <<?CLIENT_HELLO, ?UINT24(_), ?BYTE(Major), ?BYTE(Minor),
- ?UINT16(CSLength), ?UINT16(0),
- ?UINT16(CDLength),
- CipherSuites:CSLength/binary,
- ChallengeData:CDLength/binary>>) ->
- update_hashes(Hashes,
- <<?CLIENT_HELLO, ?BYTE(Major), ?BYTE(Minor),
- ?UINT16(CSLength), ?UINT16(0),
- ?UINT16(CDLength),
- 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}}.
from_3bytes(Bin3) ->
from_3bytes(Bin3, []).
@@ -1094,19 +1144,10 @@ calc_certificate_verify({3, N}, _, Algorithm, Hashes)
when N == 1; N == 2 ->
ssl_tls1:certificate_verify(Algorithm, Hashes).
-server_key_exchange_hash(Algorithm, Value) when Algorithm == rsa;
- Algorithm == dhe_rsa ->
- MD5 = crypto:md5(Value),
- SHA = crypto:sha(Value),
- <<MD5/binary, SHA/binary>>;
-
-server_key_exchange_hash(dhe_dss, Value) ->
- crypto:sha(Value).
-
key_exchange_alg(rsa) ->
?KEY_EXCHANGE_RSA;
key_exchange_alg(Alg) when Alg == dhe_rsa; Alg == dhe_dss;
- Alg == dh_dss; Alg == dh_rsa ->
+ Alg == dh_dss; Alg == dh_rsa; Alg == dh_anon ->
?KEY_EXCHANGE_DIFFIE_HELLMAN;
key_exchange_alg(_) ->
?NULL.
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-26 10:04:34 +0000