48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
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/*
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* This file is part of Codecrypt.
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*
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* Codecrypt is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or (at
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* your option) any later version.
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*
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* Codecrypt is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Codecrypt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ccr_generator_h_
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#define _ccr_generator_h_
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#include "arcfour.h"
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#include "prng.h"
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class arcfour_rng : public prng
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{
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public:
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arcfour<byte> r;
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arcfour_rng() {
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r.init (8);
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}
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~arcfour_rng() {
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r.clear();
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}
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void seed (uint bits, bool quick = true);
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uint random (uint n) {
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//rand_max is 2^32.
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return ( (r.gen() << 24) | (r.gen() << 16)
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| (r.gen() << 8) | r.gen() ) % n;
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}
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};
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#endif
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