50 lines
1.5 KiB
Erlang
50 lines
1.5 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : sha.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose :
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%%% Created : 20 Dec 2002 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2010 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(sha).
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-author('alexey@process-one.net').
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-export([start/0, sha/1]).
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start() ->
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crypto:start().
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digit_to_xchar(D) when (D >= 0) and (D < 10) ->
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D + 48;
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digit_to_xchar(D) ->
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D + 87.
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sha(Text) ->
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Bin = crypto:sha(Text),
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lists:reverse(ints_to_rxstr(binary_to_list(Bin), [])).
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ints_to_rxstr([], Res) ->
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Res;
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ints_to_rxstr([N | Ns], Res) ->
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ints_to_rxstr(Ns, [digit_to_xchar(N rem 16),
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digit_to_xchar(N div 16) | Res]).
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