LXR linux/include/linux/verification.h

   1/* Signature verification
   2 *
   3 * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public Licence
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the Licence, or (at your option) any later version.
  10 */
  11
  12#ifndef _LINUX_VERIFICATION_H
  13#define _LINUX_VERIFICATION_H
  14
  15/*
  16 * The use to which an asymmetric key is being put.
  17 */
  18enum key_being_used_for {
  19        VERIFYING_MODULE_SIGNATURE,
  20        VERIFYING_FIRMWARE_SIGNATURE,
  21        VERIFYING_KEXEC_PE_SIGNATURE,
  22        VERIFYING_KEY_SIGNATURE,
  23        VERIFYING_KEY_SELF_SIGNATURE,
  24        VERIFYING_UNSPECIFIED_SIGNATURE,
  25        NR__KEY_BEING_USED_FOR
  26};
  27extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR];
  28
  29#ifdef CONFIG_SYSTEM_DATA_VERIFICATION
  30
  31struct key;
  32
  33extern int verify_pkcs7_signature(const void *data, size_t len,
  34                                  const void *raw_pkcs7, size_t pkcs7_len,
  35                                  struct key *trusted_keys,
  36                                  enum key_being_used_for usage,
  37                                  int (*view_content)(void *ctx,
  38                                                      const void *data, size_t len,
  39                                                      size_t asn1hdrlen),
  40                                  void *ctx);
  41
  42#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
  43extern int verify_pefile_signature(const void *pebuf, unsigned pelen,
  44                                   struct key *trusted_keys,
  45                                   enum key_being_used_for usage);
  46#endif
  47
  48#endif /* CONFIG_SYSTEM_DATA_VERIFICATION */
  49#endif /* _LINUX_VERIFY_PEFILE_H */
  50