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-rw-r--r--lib/ssh/src/ssh_transport.erl156
1 files changed, 30 insertions, 126 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 682d766d99..45292ca6f0 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -32,9 +32,10 @@
-export([connect/5, accept/4]).
-export([versions/2, hello_version_msg/1]).
-export([next_seqnum/1, decrypt_first_block/2, decrypt_blocks/3,
- is_valid_mac/3, transport_messages/1, kexdh_messages/0,
- kex_dh_gex_messages/0, handle_hello_version/1,
- key_exchange_init_msg/1, key_init/3, new_keys_message/1,
+ is_valid_mac/3,
+ handle_hello_version/1,
+ key_exchange_init_msg/1,
+ key_init/3, new_keys_message/1,
handle_kexinit_msg/3, handle_kexdh_init/2,
handle_kex_dh_gex_group/2, handle_kex_dh_gex_reply/2,
handle_new_keys/2, handle_kex_dh_gex_request/2,
@@ -74,64 +75,6 @@ is_valid_mac(Mac, Data, #ssh{recv_mac = Algorithm,
recv_mac_key = Key, recv_sequence = SeqNum}) ->
Mac == mac(Algorithm, Key, SeqNum, Data).
-transport_messages(_) ->
- [{ssh_msg_disconnect, ?SSH_MSG_DISCONNECT,
- [uint32, string, string]},
-
- {ssh_msg_ignore, ?SSH_MSG_IGNORE,
- [string]},
-
- {ssh_msg_unimplemented, ?SSH_MSG_UNIMPLEMENTED,
- [uint32]},
-
- {ssh_msg_debug, ?SSH_MSG_DEBUG,
- [boolean, string, string]},
-
- {ssh_msg_service_request, ?SSH_MSG_SERVICE_REQUEST,
- [string]},
-
- {ssh_msg_service_accept, ?SSH_MSG_SERVICE_ACCEPT,
- [string]},
-
- {ssh_msg_kexinit, ?SSH_MSG_KEXINIT,
- [cookie,
- name_list, name_list,
- name_list, name_list,
- name_list, name_list,
- name_list, name_list,
- name_list, name_list,
- boolean,
- uint32]},
-
- {ssh_msg_newkeys, ?SSH_MSG_NEWKEYS,
- []}
- ].
-
-kexdh_messages() ->
- [{ssh_msg_kexdh_init, ?SSH_MSG_KEXDH_INIT,
- [mpint]},
-
- {ssh_msg_kexdh_reply, ?SSH_MSG_KEXDH_REPLY,
- [binary, mpint, binary]}
- ].
-
-kex_dh_gex_messages() ->
- [{ssh_msg_kex_dh_gex_request, ?SSH_MSG_KEX_DH_GEX_REQUEST,
- [uint32, uint32, uint32]},
-
- {ssh_msg_kex_dh_gex_request_old, ?SSH_MSG_KEX_DH_GEX_REQUEST_OLD,
- [uint32]},
-
- {ssh_msg_kex_dh_gex_group, ?SSH_MSG_KEX_DH_GEX_GROUP,
- [mpint, mpint]},
-
- {ssh_msg_kex_dh_gex_init, ?SSH_MSG_KEX_DH_GEX_INIT,
- [mpint]},
-
- {ssh_msg_kex_dh_gex_reply, ?SSH_MSG_KEX_DH_GEX_REPLY,
- [binary, mpint, binary]}
- ].
-
yes_no(Ssh, Prompt) ->
(Ssh#ssh.io_cb):yes_no(Prompt, Ssh).
@@ -257,7 +200,6 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own,
{ok, Algoritms} = select_algorithm(client, Own, CounterPart),
case verify_algorithm(Algoritms) of
true ->
- install_messages(Algoritms#alg.kex),
key_exchange_first_msg(Algoritms#alg.kex,
Ssh0#ssh{algorithms = Algoritms});
_ ->
@@ -271,7 +213,6 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own,
handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own,
#ssh{role = server} = Ssh) ->
{ok, Algoritms} = select_algorithm(server, CounterPart, Own),
- install_messages(Algoritms#alg.kex),
{ok, Ssh#ssh{algorithms = Algoritms}}.
@@ -284,11 +225,6 @@ verify_algorithm(#alg{kex = 'diffie-hellman-group-exchange-sha1'}) ->
verify_algorithm(_) ->
false.
-install_messages('diffie-hellman-group1-sha1') ->
- ssh_bits:install_messages(kexdh_messages());
-install_messages('diffie-hellman-group-exchange-sha1') ->
- ssh_bits:install_messages(kex_dh_gex_messages()).
-
key_exchange_first_msg('diffie-hellman-group1-sha1', Ssh0) ->
{G, P} = dh_group1(),
{Private, Public} = dh_gen_key(G, P, 1024),
@@ -312,10 +248,10 @@ handle_kexdh_init(#ssh_msg_kexdh_init{e = E}, Ssh0) ->
{G, P} = dh_group1(),
{Private, Public} = dh_gen_key(G, P, 1024),
K = ssh_math:ipow(E, Private, P),
- {Key, K_S} = get_host_key(Ssh0),
- H = kex_h(Ssh0, K_S, E, Public, K),
+ Key = get_host_key(Ssh0),
+ H = kex_h(Ssh0, Key, E, Public, K),
H_SIG = sign_host_key(Ssh0, Key, H),
- {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kexdh_reply{public_host_key = K_S,
+ {SshPacket, Ssh1} = ssh_packet(#ssh_msg_kexdh_reply{public_host_key = Key,
f = Public,
h_sig = H_SIG
}, Ssh0),
@@ -411,65 +347,33 @@ get_host_key(SSH) ->
#ssh{key_cb = Mod, opts = Opts, algorithms = ALG} = SSH,
case Mod:host_key(ALG#alg.hkey, Opts) of
- {ok, #'RSAPrivateKey'{modulus = N, publicExponent = E} = Key} ->
- {Key,
- ssh_bits:encode(["ssh-rsa",E,N],[string,mpint,mpint])};
- {ok, #'DSAPrivateKey'{y = Y, p = P, q = Q, g = G} = Key} ->
- {Key, ssh_bits:encode(["ssh-dss",P,Q,G,Y],
- [string,mpint,mpint,mpint,mpint])};
+ {ok, #'RSAPrivateKey'{} = Key} ->
+ Key;
+ {ok, #'DSAPrivateKey'{} = Key} ->
+ Key;
Result ->
exit({error, {Result, unsupported_key_type}})
end.
sign_host_key(_Ssh, #'RSAPrivateKey'{} = Private, H) ->
Hash = sha, %% Option ?!
- Signature = sign(H, Hash, Private),
- ssh_bits:encode(["ssh-rsa", Signature],[string, binary]);
+ _Signature = sign(H, Hash, Private);
sign_host_key(_Ssh, #'DSAPrivateKey'{} = Private, H) ->
Hash = sha, %% Option ?!
- RawSignature = sign(H, Hash, Private),
- ssh_bits:encode(["ssh-dss", RawSignature],[string, binary]).
-
-verify_host_key(SSH, K_S, H, H_SIG) ->
- ALG = SSH#ssh.algorithms,
- case ALG#alg.hkey of
- 'ssh-rsa' ->
- verify_host_key_rsa(SSH, K_S, H, H_SIG);
- 'ssh-dss' ->
- verify_host_key_dss(SSH, K_S, H, H_SIG);
- _ ->
- {error, bad_host_key_algorithm}
- end.
+ _RawSignature = sign(H, Hash, Private).
-verify_host_key_rsa(SSH, K_S, H, H_SIG) ->
- case ssh_bits:decode(K_S,[string,mpint,mpint]) of
- ["ssh-rsa", E, N] ->
- ["ssh-rsa",SIG] = ssh_bits:decode(H_SIG,[string,binary]),
- Public = #'RSAPublicKey'{publicExponent = E, modulus = N},
- case verify(H, sha, SIG, Public) of
- false ->
- {error, bad_signature};
- true ->
- known_host_key(SSH, Public, 'ssh-rsa')
- end;
- _ ->
- {error, bad_format}
+verify_host_key(SSH, PublicKey, Digest, Signature) ->
+ case verify(Digest, sha, Signature, PublicKey) of
+ false ->
+ {error, bad_signature};
+ true ->
+ known_host_key(SSH, PublicKey, public_algo(PublicKey))
end.
-verify_host_key_dss(SSH, K_S, H, H_SIG) ->
- case ssh_bits:decode(K_S,[string,mpint,mpint,mpint,mpint]) of
- ["ssh-dss",P,Q,G,Y] ->
- ["ssh-dss",SIG] = ssh_bits:decode(H_SIG,[string,binary]),
- Public = {Y, #'Dss-Parms'{p = P, q = Q, g = G}},
- case verify(H, sha, SIG, Public) of
- false ->
- {error, bad_signature};
- true ->
- known_host_key(SSH, Public, 'ssh-dss')
- end;
- _ ->
- {error, bad_host_key_format}
- end.
+public_algo(#'RSAPublicKey'{}) ->
+ 'ssh-rsa';
+public_algo({_, #'Dss-Parms'{}}) ->
+ 'ssh-dss'.
accepted_host(Ssh, PeerName, Opts) ->
case proplists:get_value(silently_accept_hosts, Opts, false) of
@@ -636,12 +540,12 @@ select(CL, SL) ->
C.
ssh_packet(#ssh_msg_kexinit{} = Msg, Ssh0) ->
- BinMsg = ssh_bits:encode(Msg),
+ BinMsg = ssh_message:encode(Msg),
Ssh = key_init(Ssh0#ssh.role, Ssh0, BinMsg),
pack(BinMsg, Ssh);
ssh_packet(Msg, Ssh) ->
- BinMsg = ssh_bits:encode(Msg),
+ BinMsg = ssh_message:encode(Msg),
pack(BinMsg, Ssh).
pack(Data0, #ssh{encrypt_block_size = BlockSize,
@@ -1021,23 +925,23 @@ hash(K, H, Ki, N, HASH) ->
Kj = HASH([K, H, Ki]),
hash(K, H, <<Ki/binary, Kj/binary>>, N-128, HASH).
-kex_h(SSH, K_S, E, F, K) ->
+kex_h(SSH, Key, E, F, K) ->
L = ssh_bits:encode([SSH#ssh.c_version, SSH#ssh.s_version,
SSH#ssh.c_keyinit, SSH#ssh.s_keyinit,
- K_S, E,F,K],
+ ssh_message:encode_host_key(Key), E,F,K],
[string,string,binary,binary,binary,
mpint,mpint,mpint]),
crypto:hash(sha,L).
-kex_h(SSH, K_S, Min, NBits, Max, Prime, Gen, E, F, K) ->
+kex_h(SSH, Key, Min, NBits, Max, Prime, Gen, E, F, K) ->
L = if Min==-1; Max==-1 ->
Ts = [string,string,binary,binary,binary,
uint32,
mpint,mpint,mpint,mpint,mpint],
ssh_bits:encode([SSH#ssh.c_version,SSH#ssh.s_version,
SSH#ssh.c_keyinit,SSH#ssh.s_keyinit,
- K_S, NBits, Prime, Gen, E,F,K],
+ ssh_message:encode_host_key(Key), NBits, Prime, Gen, E,F,K],
Ts);
true ->
Ts = [string,string,binary,binary,binary,
@@ -1045,7 +949,7 @@ kex_h(SSH, K_S, Min, NBits, Max, Prime, Gen, E, F, K) ->
mpint,mpint,mpint,mpint,mpint],
ssh_bits:encode([SSH#ssh.c_version,SSH#ssh.s_version,
SSH#ssh.c_keyinit,SSH#ssh.s_keyinit,
- K_S, Min, NBits, Max,
+ ssh_message:encode_host_key(Key), Min, NBits, Max,
Prime, Gen, E,F,K], Ts)
end,
crypto:hash(sha,L).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 05:41:54 +0000