LXR linux/include/linux/verification.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/* Signature verification
   3 *
   4 * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
   5 * Written by David Howells (dhowells@redhat.com)
   6 */
   7
   8#ifndef _LINUX_VERIFICATION_H
   9#define _LINUX_VERIFICATION_H
  10
  11/*
  12 * Indicate that both builtin trusted keys and secondary trusted keys
  13 * should be used.
  14 */
  15#define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL)
  16#define VERIFY_USE_PLATFORM_KEYRING  ((struct key *)2UL)
  17
  18/*
  19 * The use to which an asymmetric key is being put.
  20 */
  21enum key_being_used_for {
  22        VERIFYING_MODULE_SIGNATURE,
  23        VERIFYING_FIRMWARE_SIGNATURE,
  24        VERIFYING_KEXEC_PE_SIGNATURE,
  25        VERIFYING_KEY_SIGNATURE,
  26        VERIFYING_KEY_SELF_SIGNATURE,
  27        VERIFYING_UNSPECIFIED_SIGNATURE,
  28        NR__KEY_BEING_USED_FOR
  29};
  30extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR];
  31
  32#ifdef CONFIG_SYSTEM_DATA_VERIFICATION
  33
  34struct key;
  35
  36extern int verify_pkcs7_signature(const void *data, size_t len,
  37                                  const void *raw_pkcs7, size_t pkcs7_len,
  38                                  struct key *trusted_keys,
  39                                  enum key_being_used_for usage,
  40                                  int (*view_content)(void *ctx,
  41                                                      const void *data, size_t len,
  42                                                      size_t asn1hdrlen),
  43                                  void *ctx);
  44
  45#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
  46extern int verify_pefile_signature(const void *pebuf, unsigned pelen,
  47                                   struct key *trusted_keys,
  48                                   enum key_being_used_for usage);
  49#endif
  50
  51#endif /* CONFIG_SYSTEM_DATA_VERIFICATION */
  52#endif /* _LINUX_VERIFY_PEFILE_H */
  53