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40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
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/*
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Copyright (c) 2007-2011 iMatix Corporation
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Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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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
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(at your option) any later version.
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0MQ 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "random.hpp"
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#include "uuid.hpp"
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#include "err.hpp"
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// Here we can use different ways of generating random data, as avialable
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// on different platforms. At the moment, we'll assume the UUID is random
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// enough to use for that purpose.
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void zmq::generate_random (void *buf_, size_t size_)
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{
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// Collapsing an UUID into 4 bytes.
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zmq_assert (size_ == 4);
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uint32_t buff [4];
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generate_uuid ((void*) buff);
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uint32_t result = buff [0];
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result ^= buff [1];
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result ^= buff [2];
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result ^= buff [3];
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*((uint32_t*) buf_) = result;
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}
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