path: root/lib/ssh/src/ssh_math.erl

%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2013. 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/.
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%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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%%

%%% Description: SSH math utilities

-module(ssh_math).

-export([ipow/3]).
	 
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%%
%% INTEGER utils
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% calculate A^B mod M
ipow(A, B, M) when M > 0, B >= 0 ->
    crypto:bytes_to_integer(crypto:mod_pow(A, B, M)).