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-rw-r--r--lib/ssh/src/ssh_transport.erl66
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, _}) ->