digsig.h 1.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2011 Nokia Corporation
  4. * Copyright (C) 2011 Intel Corporation
  5. *
  6. * Author:
  7. * Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
  8. * <dmitry.kasatkin@intel.com>
  9. */
  10. #ifndef _DIGSIG_H
  11. #define _DIGSIG_H
  12. #include <linux/key.h>
  13. enum pubkey_algo {
  14. PUBKEY_ALGO_RSA,
  15. PUBKEY_ALGO_MAX,
  16. };
  17. enum digest_algo {
  18. DIGEST_ALGO_SHA1,
  19. DIGEST_ALGO_SHA256,
  20. DIGEST_ALGO_MAX
  21. };
  22. struct pubkey_hdr {
  23. uint8_t version; /* key format version */
  24. uint32_t timestamp; /* key made, always 0 for now */
  25. uint8_t algo;
  26. uint8_t nmpi;
  27. char mpi[];
  28. } __packed;
  29. struct signature_hdr {
  30. uint8_t version; /* signature format version */
  31. uint32_t timestamp; /* signature made */
  32. uint8_t algo;
  33. uint8_t hash;
  34. uint8_t keyid[8];
  35. uint8_t nmpi;
  36. char mpi[];
  37. } __packed;
  38. #if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
  39. int digsig_verify(struct key *keyring, const char *sig, int siglen,
  40. const char *digest, int digestlen);
  41. #else
  42. static inline int digsig_verify(struct key *keyring, const char *sig,
  43. int siglen, const char *digest, int digestlen)
  44. {
  45. return -EOPNOTSUPP;
  46. }
  47. #endif /* CONFIG_SIGNATURE */
  48. #endif /* _DIGSIG_H */