diff options
Diffstat (limited to 'lib/ssh/src')
| -rw-r--r-- | lib/ssh/src/ssh_transport.erl | 66 |
1 files changed, 53 insertions, 13 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl index 27723dc870..805114f792 100644 --- a/lib/ssh/src/ssh_transport.erl +++ b/lib/ssh/src/ssh_transport.erl @@ -118,10 +118,10 @@ kexinit_messsage(client, Random, Compression, HostKeyAlgs) -> cookie = Random, kex_algorithms = ["diffie-hellman-group1-sha1"], server_host_key_algorithms = HostKeyAlgs, - encryption_algorithms_client_to_server = ["aes128-cbc","3des-cbc"], - encryption_algorithms_server_to_client = ["aes128-cbc","3des-cbc"], - mac_algorithms_client_to_server = ["hmac-sha1"], - mac_algorithms_server_to_client = ["hmac-sha1"], + encryption_algorithms_client_to_server = ["aes128-ctr","aes128-cbc","3des-cbc"], + encryption_algorithms_server_to_client = ["aes128-ctr","aes128-cbc","3des-cbc"], + mac_algorithms_client_to_server = ["hmac-sha2-256","hmac-sha1"], + mac_algorithms_server_to_client = ["hmac-sha2-256","hmac-sha1"], compression_algorithms_client_to_server = Compression, compression_algorithms_server_to_client = Compression, languages_client_to_server = [], @@ -133,10 +133,10 @@ kexinit_messsage(server, Random, Compression, HostKeyAlgs) -> cookie = Random, kex_algorithms = ["diffie-hellman-group1-sha1"], server_host_key_algorithms = HostKeyAlgs, - encryption_algorithms_client_to_server = ["aes128-cbc","3des-cbc"], - encryption_algorithms_server_to_client = ["aes128-cbc","3des-cbc"], - mac_algorithms_client_to_server = ["hmac-sha1"], - mac_algorithms_server_to_client = ["hmac-sha1"], + encryption_algorithms_client_to_server = ["aes128-ctr","aes128-cbc","3des-cbc"], + encryption_algorithms_server_to_client = ["aes128-ctr","aes128-cbc","3des-cbc"], + mac_algorithms_client_to_server = ["hmac-sha2-256","hmac-sha1"], + mac_algorithms_server_to_client = ["hmac-sha2-256","hmac-sha1"], compression_algorithms_client_to_server = Compression, compression_algorithms_server_to_client = Compression, languages_client_to_server = [], @@ -636,7 +636,21 @@ encrypt_init(#ssh{encrypt = 'aes128-cbc', role = server} = Ssh) -> <<K:16/binary>> = hash(Ssh, "D", 128), {ok, Ssh#ssh{encrypt_keys = K, encrypt_block_size = 16, - encrypt_ctx = IV}}. + encrypt_ctx = IV}}; +encrypt_init(#ssh{encrypt = 'aes128-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:16/binary>> = hash(Ssh, "C", 128), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = State}}; +encrypt_init(#ssh{encrypt = 'aes128-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:16/binary>> = hash(Ssh, "D", 128), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{encrypt_keys = K, + encrypt_block_size = 16, + encrypt_ctx = State}}. encrypt_final(Ssh) -> {ok, Ssh#ssh{encrypt = none, @@ -658,7 +672,11 @@ encrypt(#ssh{encrypt = 'aes128-cbc', encrypt_ctx = IV0} = Ssh, Data) -> Enc = crypto:block_encrypt(aes_cbc128, K,IV0,Data), IV = crypto:next_iv(aes_cbc, Enc), - {Ssh#ssh{encrypt_ctx = IV}, Enc}. + {Ssh#ssh{encrypt_ctx = IV}, Enc}; +encrypt(#ssh{encrypt = 'aes128-ctr', + encrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_encrypt(State0,Data), + {Ssh#ssh{encrypt_ctx = State}, Enc}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -690,7 +708,21 @@ decrypt_init(#ssh{decrypt = 'aes128-cbc', role = server} = Ssh) -> hash(Ssh, "C", 128)}, <<K:16/binary>> = KD, {ok, Ssh#ssh{decrypt_keys = K, decrypt_ctx = IV, - decrypt_block_size = 16}}. + decrypt_block_size = 16}}; +decrypt_init(#ssh{decrypt = 'aes128-ctr', role = client} = Ssh) -> + IV = hash(Ssh, "B", 128), + <<K:16/binary>> = hash(Ssh, "D", 128), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = State}}; +decrypt_init(#ssh{decrypt = 'aes128-ctr', role = server} = Ssh) -> + IV = hash(Ssh, "A", 128), + <<K:16/binary>> = hash(Ssh, "C", 128), + State = crypto:stream_init(aes_ctr, K, IV), + {ok, Ssh#ssh{decrypt_keys = K, + decrypt_block_size = 16, + decrypt_ctx = State}}. decrypt_final(Ssh) -> @@ -711,7 +743,11 @@ decrypt(#ssh{decrypt = 'aes128-cbc', decrypt_keys = Key, decrypt_ctx = IV0} = Ssh, Data) -> Dec = crypto:block_decrypt(aes_cbc128, Key,IV0,Data), IV = crypto:next_iv(aes_cbc, Data), - {Ssh#ssh{decrypt_ctx = IV}, Dec}. + {Ssh#ssh{decrypt_ctx = IV}, Dec}; +decrypt(#ssh{decrypt = 'aes128-ctr', + decrypt_ctx = State0} = Ssh, Data) -> + {State, Enc} = crypto:stream_decrypt(State0,Data), + {Ssh#ssh{decrypt_ctx = State}, Enc}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Compression @@ -846,7 +882,9 @@ mac('hmac-sha1-96', Key, SeqNum, Data) -> mac('hmac-md5', Key, SeqNum, Data) -> crypto:hmac(md5, Key, [<<?UINT32(SeqNum)>>, Data]); mac('hmac-md5-96', Key, SeqNum, Data) -> - crypto:hmac(md5, Key, [<<?UINT32(SeqNum)>>, Data], mac_digest_size('hmac-md5-96')). + crypto:hmac(md5, Key, [<<?UINT32(SeqNum)>>, Data], mac_digest_size('hmac-md5-96')); +mac('hmac-sha2-256', Key, SeqNum, Data) -> + crypto:hmac(sha256, Key, [<<?UINT32(SeqNum)>>, Data]). %% return N hash bytes (HASH) hash(SSH, Char, Bits) -> @@ -911,12 +949,14 @@ mac_key_size('hmac-sha1') -> 20*8; mac_key_size('hmac-sha1-96') -> 20*8; mac_key_size('hmac-md5') -> 16*8; mac_key_size('hmac-md5-96') -> 16*8; +mac_key_size('hmac-sha2-256')-> 32*8; mac_key_size(none) -> 0. mac_digest_size('hmac-sha1') -> 20; mac_digest_size('hmac-sha1-96') -> 12; mac_digest_size('hmac-md5') -> 20; mac_digest_size('hmac-md5-96') -> 12; +mac_digest_size('hmac-sha2-256') -> 32; mac_digest_size(none) -> 0. peer_name({Host, _}) -> |