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/*
* Copyright © 2025 David Dudas
*
* Author: David Dudas <david.dudas03@e-uvt.ro>
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
#include "config.h"
#include "random_callbacks.h"
#include "gnutls/crypto.h"
#include <tss2/tss2_esys.h>
static TSS2_RC _gnutls_get_random2b(TPM2B_NONCE *nonce, size_t num_bytes,
void *userdata)
{
if (num_bytes > sizeof(nonce->buffer))
return TSS2_ESYS_RC_INSUFFICIENT_BUFFER;
if (gnutls_rnd(GNUTLS_RND_RANDOM, nonce->buffer, num_bytes) < 0)
return TSS2_ESYS_RC_GENERAL_FAILURE;
nonce->size = num_bytes;
return TSS2_RC_SUCCESS;
}
void _gnutls_set_tss2_random_callbacks(ESYS_CRYPTO_CALLBACKS *callbacks)
{
callbacks->get_random2b = _gnutls_get_random2b;
}
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