aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ssh/src/ssh_rsa.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/ssh/src/ssh_rsa.erl')
-rw-r--r--lib/ssh/src/ssh_rsa.erl298
1 files changed, 0 insertions, 298 deletions
diff --git a/lib/ssh/src/ssh_rsa.erl b/lib/ssh/src/ssh_rsa.erl
deleted file mode 100644
index 77c411b09f..0000000000
--- a/lib/ssh/src/ssh_rsa.erl
+++ /dev/null
@@ -1,298 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2005-2011. All Rights Reserved.
-%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% %CopyrightEnd%
-%%
-
-%%
-
-%%% Description: rsa public-key sign and verify
-
--module(ssh_rsa).
-
--export([verify/3, sign/2]).
--export([alg_name/0]).
-
--include("ssh.hrl").
--include("PKCS-1.hrl").
-
-
--define(MGF(Seed,Len), mgf1((Seed),(Len))).
--define(HASH(X), crypto:sha((X))).
--define(HLen, 20).
-
-%% start() ->
-%% crypto:start().
-
-%% sign_file(File) ->
-%% start(),
-%% {ok,Bin} = file:read_file(File),
-%% {ok,Key} = ssh_file:private_host_rsa_key(user),
-%% sign(Key, Bin).
-
-%% verify_file(File, Sig) ->
-%% start(),
-%% {ok,Bin} = file:read_file(File),
-%% {ok,Key} = ssh_file:public_host_rsa_key(user),
-%% verify(Key, Bin, Sig).
-
-sign(Private,Mb) ->
- rsassa_pkcs1_v1_5_sign(Private,Mb).
-
-verify(Public,Mb,Sb) ->
- rsassa_pkcs1_v1_5_verify(Public,Mb,Sb).
-
-
-
-%% Integer to octet string
-i2osp(X, XLen) ->
- ssh_bits:i2bin(X, XLen).
-
-%% Octet string to Integer
-os2ip(X) ->
- ssh_bits:bin2i(X).
-
-%% decrypt1, M = message representative
-%% rsaep(#ssh_key { public={N,E}}, M) ->
-%% ?ssh_assert(M >= 0 andalso M =< N-1, out_of_range),
-%% ssh_math:ipow(M, E, N).
-
-%% encrypt1, C = cipher representative
-%% rsadp(#ssh_key { public={N,_}, private={_,D}}, C) ->
-%% ?ssh_assert(C >= 0 andalso C =< N-1, out_of_range),
-%% ssh_math:ipow(C, D, N).
-
-%% sign1, M = message representative
-rsasp1(#ssh_key { public={N,_}, private={_,D}}, M) ->
- ?ssh_assert((M >= 0 andalso M =< N-1), out_of_range),
- ssh_math:ipow(M, D, N).
-
-%% verify1, S =signature representative
-rsavp1(#ssh_key { public={N,E}}, S) ->
- ?ssh_assert(S >= 0 andalso S =< N-1, out_of_range),
- ssh_math:ipow(S, E, N).
-
-
-%% M messaage
-%% rsaes_oaep_encrypt(Public, M) ->
-%% rsaes_oaep_encrypt(Public, M, <<>>).
-
-%% rsaes_oaep_encrypt(Public=#ssh_key { public={N,_E}}, M, L) ->
-%% ?ssh_assert(size(L) =< 16#ffffffffffffffff, label_to_long),
-%% K = (ssh_bits:isize(N)+7) div 8,
-%% MLen = size(M),
-%% %% LLen = size(L),
-%% ?ssh_assert(MLen =< K - 2*?HLen - 2, message_to_long),
-%% LHash = ?HASH(L),
-%% PS = ssh_bits:fill_bits(K - MLen - 2*?HLen - 2, 0),
-%% DB = <<LHash/binary, PS/binary, 16#01, M/binary>>,
-%% Seed = ssh_bits:random(?HLen),
-%% DbMask = ?MGF(Seed, K - ?HLen - 1),
-%% MaskedDB = ssh_bits:xor_bits(DB, DbMask),
-%% SeedMask = ?MGF(MaskedDB, ?HLen),
-%% MaskedSeed = ssh_bits:xor_bits(Seed, SeedMask),
-%% EM = <<16#00, MaskedSeed/binary, MaskedDB/binary>>,
-%% Mc = os2ip(EM),
-%% C = rsaep(Public, Mc),
-%% i2osp(C, K).
-
-%% rsaes_oaep_decrypt(Key, C) ->
-%% rsaes_oaep_decrypt(Key, C, <<>>).
-
-%% rsaes_oaep_decrypt(Private=#ssh_key { public={N,_},private={_,_}},Cb,L) ->
-%% ?ssh_assert(size(L) =< 16#ffffffffffffffff, label_to_long),
-%% K = (ssh_bits:isize(N)+7) div 8,
-%% ?ssh_assert(K == 2*?HLen + 2, decryption_error),
-%% C = os2ip(Cb),
-%% M = rsadp(Private, C),
-%% EM = i2osp(M, K),
-%% LHash = ?HASH(L),
-%% MLen = K - ?HLen -1,
-%% case EM of
-%% <<16#00, MaskedSeed:?HLen/binary, MaskedDB:MLen>> ->
-%% SeedMask = ?MGF(MaskedDB, ?HLen),
-%% Seed = ssh_bits:xor_bits(MaskedSeed, SeedMask),
-%% DbMask = ?MGF(Seed, K - ?HLen - 1),
-%% DB = ssh_bits:xor_bits(MaskedDB, DbMask),
-%% PSLen = K - MLen - 2*?HLen - 2,
-%% case DB of
-%% <<LHash:?HLen, _PS:PSLen/binary, 16#01, M/binary>> ->
-%% M;
-%% _ ->
-%% exit(decryption_error)
-%% end;
-%% _ ->
-%% exit(decryption_error)
-%% end.
-
-
-%% rsaes_pkcs1_v1_5_encrypt(Public=#ssh_key { public={N,_}}, M) ->
-%% K = (ssh_bits:isize(N)+7) div 8,
-%% MLen = size(M),
-%% ?ssh_assert(MLen =< K - 11, message_to_long),
-%% PS = ssh_bits:random(K - MLen - 3),
-%% EM = <<16#00,16#02,PS/binary,16#00,M/binary>>,
-%% Mc = os2ip(EM),
-%% C = rsaep(Public, Mc),
-%% i2osp(C, K).
-
-
-%% rsaes_pkcs1_v1_5_decrypt(Private=#ssh_key { public={N,_},private={_,_}},
-%% Cb) ->
-%% K = (ssh_bits:isize(N)+7) div 8,
-%% CLen = size(Cb),
-%% ?ssh_assert(CLen == K andalso K >= 11, decryption_error),
-%% C = os2ip(Cb),
-%% M = rsadp(Private, C),
-%% EM = i2osp(M, K),
-%% PSLen = K - CLen - 3,
-%% case EM of
-%% <<16#00, 16#02, _PS:PSLen/binary, 16#00, M>> ->
-%% M;
-%% _ ->
-%% exit(decryption_error)
-%% end.
-
-%% rsassa_pss_sign(Private=#ssh_key { public={N,_},private={_,_}},Mb) ->
-%% ModBits = ssh_bits:isize(N),
-%% K = (ModBits+7) div 8,
-%% EM = emsa_pss_encode(Mb, ModBits - 1),
-%% M = os2ip(EM),
-%% S = rsasp1(Private, M),
-%% i2osp(S, K).
-
-%% rsassa_pss_verify(Public=#ssh_key { public={N,_E}},Mb,Sb) ->
-%% ModBits = ssh_bits:isize(N),
-%% K = (ModBits+7) div 8,
-%% ?ssh_assert(size(Sb) == K, invalid_signature),
-%% S = os2ip(Sb),
-%% M = rsavp1(Public,S),
-%% EMLen = (ModBits-1+7) div 8,
-%% EM = i2osp(M, EMLen),
-%% emsa_pss_verify(Mb, EM, ModBits-1).
-
-
-rsassa_pkcs1_v1_5_sign(Private=#ssh_key { public={N,_},private={_,_D}},Mb) ->
- K = (ssh_bits:isize(N)+7) div 8,
- EM = emsa_pkcs1_v1_5_encode(Mb, K),
- M = os2ip(EM),
- S = rsasp1(Private, M),
- i2osp(S, K).
-
-rsassa_pkcs1_v1_5_verify(Public=#ssh_key { public={N,_E}}, Mb, Sb) ->
- K = (ssh_bits:isize(N)+7) div 8,
- ?ssh_assert(size(Sb) == K, invalid_signature),
- S = os2ip(Sb),
- M = rsavp1(Public, S),
- EM = i2osp(M, K),
- %?dbg(true, "verify K=~p S=~w ~n#M=~w~n#EM=~w~n", [K, S, M, EM]),
- case emsa_pkcs1_v1_5_encode(Mb, K) of
- EM -> ok;
- _S ->
- {error, invalid_signature}
- end.
-
-
-emsa_pkcs1_v1_5_encode(M, EMLen) ->
- H = ?HASH(M),
- %% Must use speical xxNull types here!
- Alg = #'AlgorithmNull' { algorithm = ?'id-sha1',
- parameters = <<>> },
- {ok,TCode} = 'PKCS-1':encode('DigestInfoNull',
- #'DigestInfoNull'{ digestAlgorithm = Alg,
- digest = H }),
- T = list_to_binary(TCode),
- TLen = size(T),
- ?ssh_assert(EMLen >= TLen + 11, message_to_short),
- PS = ssh_bits:fill_bits(EMLen - TLen - 3, 16#ff),
- <<16#00, 16#01, PS/binary, 16#00, T/binary>>.
-
-
-%% emsa_pss_encode(M, EMBits) ->
-%% emsa_pss_encode(M, EMBits, 0).
-
-%% emsa_pss_encode(M, EMBits, SLen) ->
-%% ?ssh_assert(size(M) =< 16#ffffffffffffffff, message_to_long),
-%% EMLen = (EMBits + 7) div 8,
-%% MHash = ?HASH(M),
-%% ?ssh_assert(EMLen >= ?HLen + SLen + 2, encoding_error),
-%% Salt = ssh_bits:random(SLen),
-%% M1 = [16#00,16#00,16#00,16#00,16#00,16#00,16#00,16#00,
-%% MHash, Salt],
-%% H = ?HASH(M1),
-%% PS = ssh_bits:fill_bits(EMLen-SLen-?HLen-2, 0),
-%% DB = <<PS/binary, 16#01, Salt/binary>>,
-%% DbMask = ?MGF(H, EMLen - ?HLen -1),
-%% MaskedDB = ssh_bits:xor_bits(DB, DbMask),
-%% ZLen = 8*EMLen - EMBits,
-%% NZLen = (8 - (ZLen rem 8)) rem 8,
-%% <<_:ZLen, NZ:NZLen, MaskedDB1/binary>> = MaskedDB,
-%% MaskedDB2 = <<0:ZLen, NZ:NZLen, MaskedDB1/binary>>,
-%% <<MaskedDB2/binary, H/binary, 16#BC>>.
-
-
-%% emsa_pss_verify(M, EM, EMBits) ->
-%% emsa_pss_verify(M, EM, EMBits, 0).
-
-%% emsa_pss_verify(M, EM, EMBits, SLen) ->
-%% ?ssh_assert(size(M) =< 16#ffffffffffffffff, message_to_long),
-%% EMLen = (EMBits + 7) div 8,
-%% MHash = ?HASH(M),
-%% ?ssh_assert(EMLen >= ?HLen + SLen + 2, inconsistent),
-%% MaskLen = (EMLen - ?HLen - 1)-1,
-%% ZLen = 8*EMLen - EMBits,
-%% NZLen = (8 - (ZLen rem 8)) rem 8,
-%% case EM of
-%% <<0:ZLen,Nz:NZLen,MaskedDB1:MaskLen/binary, H:?HLen/binary, 16#BC>> ->
-%% MaskedDB = <<0:ZLen,Nz:NZLen,MaskedDB1/binary>>,
-%% DbMask = ?MGF(H, EMLen - ?HLen - 1),
-%% DB = ssh_bits:xor_bits(MaskedDB, DbMask),
-%% PSLen1 = (EMLen - SLen - ?HLen - 2) - 1,
-%% PS = ssh_bits:fill_bits(PSLen1, 0),
-%% case DB of
-%% <<_:ZLen,0:NZLen,PS:PSLen1/binary,16#01,Salt:SLen/binary>> ->
-%% M1 = [16#00,16#00,16#00,16#00,16#00,16#00,16#00,16#00,
-%% MHash, Salt],
-%% case ?HASH(M1) of
-%% H -> ok;
-%% _ -> exit(inconsistent)
-%% end;
-%% _ ->
-%% exit(inconsistent)
-%% end;
-%% _ ->
-%% exit(inconsistent)
-%% end.
-
-
-
-%% Mask generating function MGF1
-%% mgf1(MGFSeed, MaskLen) ->
-%% T = mgf1_loop(0, ((MaskLen + ?HLen -1) div ?HLen) - 1, MGFSeed, ""),
-%% <<R:MaskLen/binary, _/binary>> = T,
-%% R.
-
-%% mgf1_loop(Counter, N, _, T) when Counter > N ->
-%% list_to_binary(T);
-%% mgf1_loop(Counter, N, MGFSeed, T) ->
-%% C = i2osp(Counter, 4),
-%% mgf1_loop(Counter+1, N, MGFSeed, [T, ?HASH([MGFSeed, C])]).
-
-
-
-
-alg_name() ->
- "ssh-rsa".
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 12:27:52 +0000