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| author | Hans Nilsson <[email protected]> | 2016-12-13 10:35:31 +0100 |
|---|---|---|
| committer | Hans Nilsson <[email protected]> | 2016-12-16 15:26:42 +0100 |
| commit | 5901661b62a006a6c55d77503a7198c7c56dabe7 (patch) | |
| tree | d1c481ed00d44cbc0f2d99a9ab173b2109130df9 /lib/ssh | |
| parent | a17267414f8d30016fc8c6eae182d6fa353ad5b4 (diff) | |
| download | otp-5901661b62a006a6c55d77503a7198c7c56dabe7.tar.gz otp-5901661b62a006a6c55d77503a7198c7c56dabe7.tar.bz2 otp-5901661b62a006a6c55d77503a7198c7c56dabe7.zip | |
ssh: Optimize handling of #ssh.shared_secret
It is not necessary to mpint-encode it every time it is used (in MAC:s), it sufficies to do it once after key exchange
Diffstat (limited to 'lib/ssh')
| -rw-r--r-- | lib/ssh/src/ssh_transport.erl | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl index 21ba34506a..53e9ef485b 100644 --- a/lib/ssh/src/ssh_transport.erl +++ b/lib/ssh/src/ssh_transport.erl @@ -367,7 +367,7 @@ handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, h_sig = H_SIG }, Ssh0), {ok, SshPacket, Ssh1#ssh{keyex_key = {{Private, Public}, {G, P}}, - shared_secret = K, + shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh1, H)}}; @@ -393,7 +393,7 @@ handle_kexdh_reply(#ssh_msg_kexdh_reply{public_host_key = PeerPubHostKey, case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of ok -> {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, + {ok, SshPacket, Ssh#ssh{shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh, H)}}; Error -> @@ -532,7 +532,7 @@ handle_kex_dh_gex_init(#ssh_msg_kex_dh_gex_init{e = E}, ssh_packet(#ssh_msg_kex_dh_gex_reply{public_host_key = MyPubHostKey, f = Public, h_sig = H_SIG}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, + {ok, SshPacket, Ssh#ssh{shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh, H) }}; @@ -568,7 +568,7 @@ handle_kex_dh_gex_reply(#ssh_msg_kex_dh_gex_reply{public_host_key = PeerPubHostK case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of ok -> {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, + {ok, SshPacket, Ssh#ssh{shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh, H)}}; _Error -> @@ -618,7 +618,7 @@ handle_kex_ecdh_init(#ssh_msg_kex_ecdh_init{q_c = PeerPublic}, h_sig = H_SIG}, Ssh0), {ok, SshPacket, Ssh1#ssh{keyex_key = {{MyPublic,MyPrivate},Curve}, - shared_secret = K, + shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh1, H)}} catch @@ -644,7 +644,7 @@ handle_kex_ecdh_reply(#ssh_msg_kex_ecdh_reply{public_host_key = PeerPubHostKey, case verify_host_key(Ssh0, PeerPubHostKey, H, H_SIG) of ok -> {SshPacket, Ssh} = ssh_packet(#ssh_msg_newkeys{}, Ssh0), - {ok, SshPacket, Ssh#ssh{shared_secret = K, + {ok, SshPacket, Ssh#ssh{shared_secret = ssh_bits:mpint(K), exchanged_hash = H, session_id = sid(Ssh, H)}}; Error -> @@ -1577,7 +1577,7 @@ hash(SSH, Char, Bits) -> hash(_SSH, _Char, 0, _HASH) -> <<>>; hash(SSH, Char, N, HASH) -> - K = ssh_bits:mpint(SSH#ssh.shared_secret), +K = SSH#ssh.shared_secret, % K = ssh_bits:mpint(SSH#ssh.shared_secret), H = SSH#ssh.exchanged_hash, SessionID = SSH#ssh.session_id, K1 = HASH([K, H, Char, SessionID]), |