include/crypto/pkcs7.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /* PKCS#7 crypto data parser
0003  *
0004  * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
0005  * Written by David Howells (dhowells@redhat.com)
0006  */
0007
0008 #ifndef _CRYPTO_PKCS7_H
0009 #define _CRYPTO_PKCS7_H
0010
0011 #include <linux/verification.h>
0012 #include <linux/hash_info.h>
0013 #include <crypto/public_key.h>
0014
0015 struct key;
0016 struct pkcs7_message;
0017
0018 /*
0019  * pkcs7_parser.c
0020  */
0021 extern struct pkcs7_message *pkcs7_parse_message(const void *data,
0022                          size_t datalen);
0023 extern void pkcs7_free_message(struct pkcs7_message *pkcs7);
0024
0025 extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7,
0026                   const void **_data, size_t *_datalen,
0027                   size_t *_headerlen);
0028
0029 /*
0030  * pkcs7_trust.c
0031  */
0032 extern int pkcs7_validate_trust(struct pkcs7_message *pkcs7,
0033                 struct key *trust_keyring);
0034
0035 /*
0036  * pkcs7_verify.c
0037  */
0038 extern int pkcs7_verify(struct pkcs7_message *pkcs7,
0039             enum key_being_used_for usage);
0040
0041 extern int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,
0042                       const void *data, size_t datalen);
0043
0044 extern int pkcs7_get_digest(struct pkcs7_message *pkcs7, const u8 **buf,
0045                 u32 *len, enum hash_algo *hash_algo);
0046
0047 #endif /* _CRYPTO_PKCS7_H */