LXR qemu/include/crypto/random.h

   1/*
   2 * QEMU Crypto random number provider
   3 *
   4 * Copyright (c) 2015-2016 Red Hat, Inc.
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 *
  19 */
  20
  21#ifndef QCRYPTO_RANDOM_H__
  22#define QCRYPTO_RANDOM_H__
  23
  24#include "qemu-common.h"
  25#include "qapi/error.h"
  26
  27
  28/**
  29 * qcrypto_random_bytes:
  30 * @buf: the buffer to fill
  31 * @buflen: length of @buf in bytes
  32 * @errp: pointer to a NULL-initialized error object
  33 *
  34 * Fill @buf with @buflen bytes of cryptographically strong
  35 * random data
  36 *
  37 * Returns 0 on sucess, -1 on error
  38 */
  39int qcrypto_random_bytes(uint8_t *buf,
  40                         size_t buflen,
  41                         Error **errp);
  42
  43
  44#endif /* QCRYPTO_RANDOM_H__ */
  45