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author | Ingela Anderton Andin <[email protected]> | 2012-01-31 16:12:30 +0100 |
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committer | Ingela Anderton Andin <[email protected]> | 2012-02-10 15:34:19 +0100 |
commit | 8d20de278b3ef69ea470bfb35e5999750214e3a1 (patch) | |
tree | aeaee1cc7c7c3f882934a608e6c2ad903d09c876 /lib/ssh/src/ssh_dsa.erl | |
parent | 2916e7f2aa523411717c3ed4e275ab96cb03b6ee (diff) | |
download | otp-8d20de278b3ef69ea470bfb35e5999750214e3a1.tar.gz otp-8d20de278b3ef69ea470bfb35e5999750214e3a1.tar.bz2 otp-8d20de278b3ef69ea470bfb35e5999750214e3a1.zip |
Removed no longer needed code
Diffstat (limited to 'lib/ssh/src/ssh_dsa.erl')
-rw-r--r-- | lib/ssh/src/ssh_dsa.erl | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/lib/ssh/src/ssh_dsa.erl b/lib/ssh/src/ssh_dsa.erl deleted file mode 100644 index 6650b8b99b..0000000000 --- a/lib/ssh/src/ssh_dsa.erl +++ /dev/null @@ -1,71 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2005-2012. 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: dsa public-key sign and verify - --module(ssh_dsa). - --export([verify/3, verify/4]). --export([sign/2]). --export([alg_name/0]). - --include("ssh.hrl"). --include_lib("public_key/include/public_key.hrl"). - -sign(_Private= #'DSAPrivateKey'{p = P, q = Q, g = G, x = X},Mb) -> - K = ssh_bits:irandom(160) rem Q, - R = ssh_math:ipow(G, K, P) rem Q, - Ki = ssh_math:invert(K, Q), - <<M:160/big-unsigned-integer>> = crypto:sha(Mb), - S = (Ki * (M + X*R)) rem Q, - <<R:160/big-unsigned-integer, S:160/big-unsigned-integer>>. - -verify(PlainText, sha, Sig, {Y, {_, P, Q, G}}) -> - verify(#ssh_key{type = dsa, - public = {P,Q,G,Y}}, PlainText, Sig). - -verify(Public, Mb, Sb) -> - case catch xverify(Public, Mb, Sb) of - {'EXIT', _Reason} -> - false; - ok -> - true - end. - -xverify(_Public=#ssh_key { public={P,Q,G,Y} },Mb,Sb) -> - <<R0:160/big-unsigned-integer, S0:160/big-unsigned-integer>> = Sb, - ?ssh_assert(R0 >= 0 andalso R0 < Q andalso - S0 >= 0 andalso S0 < Q, out_of_range), - W = ssh_math:invert(S0,Q), - <<M0:160/big-unsigned-integer>> = crypto:sha(Mb), - U1 = (M0*W) rem Q, - U2 = (R0*W) rem Q, - T1 = ssh_math:ipow(G,U1,P), - T2 = ssh_math:ipow(Y,U2,P), - V = ((T1*T2) rem P) rem Q, - if V == R0 -> - ok; - true -> - {error, inconsistent_key} - end. - -alg_name() -> - "ssh-dss". |