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random-gnutls.c 1.3KB

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  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. #include "qemu/osdep.h"
  21. #include "crypto/random.h"
  22. #include "qapi/error.h"
  23. #include <gnutls/gnutls.h>
  24. #include <gnutls/crypto.h>
  25. int qcrypto_random_bytes(void *buf,
  26. size_t buflen,
  27. Error **errp)
  28. {
  29. int ret;
  30. ret = gnutls_rnd(GNUTLS_RND_RANDOM, buf, buflen);
  31. if (ret < 0) {
  32. error_setg(errp, "Cannot get random bytes: %s",
  33. gnutls_strerror(ret));
  34. return -1;
  35. }
  36. return 0;
  37. }
  38. int qcrypto_random_init(Error **errp G_GNUC_UNUSED) { return 0; }