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* Copyright (C) 2008 Free Software Foundation
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* Author: Nikos Mavrogiannopoulos
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* This file is part of GNUTLS.
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* The GNUTLS library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful, but
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* 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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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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/* This file handles all the internal functions that cope with random data.
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#include <gnutls_int.h>
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#include <gnutls_errors.h>
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static gnutls_crypto_rnd_st * cc = NULL;
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static void * rnd_ctx;
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/* check if a digest has been registered
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cc = _gnutls_get_crypto_rnd();
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if (cc->init(& rnd_ctx) < 0) {
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return GNUTLS_E_RANDOM_FAILED;
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gc_pseudo_random (&c, 1);
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_gnutls_rnd (int level, void *data, int len)
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return cc->rnd( rnd_ctx, level, data, len);
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if (level == RND_NONCE)
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ret = gc_nonce (data, len);
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ret = gc_pseudo_random( data, len);
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if (ret == GC_OK) return 0;
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else return GNUTLS_E_RANDOM_FAILED;