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-rw-r--r--lib/ssh/src/ssh_transport.erl80
1 files changed, 67 insertions, 13 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 27723dc870..ea05c849b7 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -113,15 +113,28 @@ key_init(client, Ssh, Value) ->
key_init(server, Ssh, Value) ->
Ssh#ssh{s_keyinit = Value}.
+available_ssh_algos() ->
+ Supports = crypto:supports(),
+ CipherAlgos = [{aes_ctr, "aes128-ctr"}, {aes_cbc128, "aes128-cbc"}, {des3_cbc, "3des-cbc"}],
+ Ciphers = [SshAlgo ||
+ {CryptoAlgo, SshAlgo} <- CipherAlgos,
+ lists:member(CryptoAlgo, proplists:get_value(ciphers, Supports, []))],
+ HashAlgos = [{sha256, "hmac-sha2-256"}, {sha, "hmac-sha1"}],
+ Hashs = [SshAlgo ||
+ {CryptoAlgo, SshAlgo} <- HashAlgos,
+ lists:member(CryptoAlgo, proplists:get_value(hashs, Supports, []))],
+ {Ciphers, Hashs}.
+
kexinit_messsage(client, Random, Compression, HostKeyAlgs) ->
+ {CipherAlgs, HashAlgs} = available_ssh_algos(),
#ssh_msg_kexinit{
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 = CipherAlgs,
+ encryption_algorithms_server_to_client = CipherAlgs,
+ mac_algorithms_client_to_server = HashAlgs,
+ mac_algorithms_server_to_client = HashAlgs,
compression_algorithms_client_to_server = Compression,
compression_algorithms_server_to_client = Compression,
languages_client_to_server = [],
@@ -129,14 +142,15 @@ kexinit_messsage(client, Random, Compression, HostKeyAlgs) ->
};
kexinit_messsage(server, Random, Compression, HostKeyAlgs) ->
+ {CipherAlgs, HashAlgs} = available_ssh_algos(),
#ssh_msg_kexinit{
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 = CipherAlgs,
+ encryption_algorithms_server_to_client = CipherAlgs,
+ mac_algorithms_client_to_server = HashAlgs,
+ mac_algorithms_server_to_client = HashAlgs,
compression_algorithms_client_to_server = Compression,
compression_algorithms_server_to_client = Compression,
languages_client_to_server = [],
@@ -636,7 +650,21 @@ 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 +686,11 @@ 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 +722,21 @@ 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 +757,11 @@ 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 +896,9 @@ 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 +963,14 @@ 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, _}) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 06:00:38 +0000