include/crypto/pkcs7.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* PKCS#7 crypto data parser
   3  *
   4  * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
   5  * Written by David Howells (dhowells@redhat.com)
   6  */
   7
   8 #ifndef _CRYPTO_PKCS7_H
   9 #define _CRYPTO_PKCS7_H
  10
  11 #include <linux/verification.h>
  12 #include <linux/hash_info.h>
  13 #include <crypto/public_key.h>
  14
  15 struct key;
  16 struct pkcs7_message;
  17
  18 /*
  19  * pkcs7_parser.c
  20  */
  21 extern struct pkcs7_message *pkcs7_parse_message(const void *data,
  22                                                  size_t datalen);
  23 extern void pkcs7_free_message(struct pkcs7_message *pkcs7);
  24
  25 extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7,
  26                                   const void **_data, size_t *_datalen,
  27                                   size_t *_headerlen);
  28
  29 /*
  30  * pkcs7_trust.c
  31  */
  32 extern int pkcs7_validate_trust(struct pkcs7_message *pkcs7,
  33                                 struct key *trust_keyring);
  34
  35 /*
  36  * pkcs7_verify.c
  37  */
  38 extern int pkcs7_verify(struct pkcs7_message *pkcs7,
  39                         enum key_being_used_for usage);
  40
  41 extern int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,
  42                                       const void *data, size_t datalen);
  43
  44 extern int pkcs7_get_digest(struct pkcs7_message *pkcs7, const u8 **buf,
  45                             u32 *len, enum hash_algo *hash_algo);
  46
  47 #endif /* _CRYPTO_PKCS7_H */