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 #include <linux/errno.h> 12 #include <linux/types.h> 13 14 /* 15 * Indicate that both builtin trusted keys and secondary trusted keys 16 * should be used. 17 */ 18 #define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL) 19 #define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL) 20 21 static inline int system_keyring_id_check(u64 id) 22 { 23 if (id > (unsigned long)VERIFY_USE_PLATFORM_KEYRING) 24 return -EINVAL; 25 26 return 0; 27 } 28 29 /* 30 * The use to which an asymmetric key is being put. 31 */ 32 enum key_being_used_for { 33 VERIFYING_MODULE_SIGNATURE, 34 VERIFYING_FIRMWARE_SIGNATURE, 35 VERIFYING_KEXEC_PE_SIGNATURE, 36 VERIFYING_KEY_SIGNATURE, 37 VERIFYING_KEY_SELF_SIGNATURE, 38 VERIFYING_UNSPECIFIED_SIGNATURE, 39 NR__KEY_BEING_USED_FOR 40 }; 41 #ifdef CONFIG_SYSTEM_DATA_VERIFICATION 42 43 struct key; 44 struct pkcs7_message; 45 46 extern int verify_pkcs7_signature(const void *data, size_t len, 47 const void *raw_pkcs7, size_t pkcs7_len, 48 struct key *trusted_keys, 49 enum key_being_used_for usage, 50 int (*view_content)(void *ctx, 51 const void *data, size_t len, 52 size_t asn1hdrlen), 53 void *ctx); 54 extern int verify_pkcs7_message_sig(const void *data, size_t len, 55 struct pkcs7_message *pkcs7, 56 struct key *trusted_keys, 57 enum key_being_used_for usage, 58 int (*view_content)(void *ctx, 59 const void *data, 60 size_t len, 61 size_t asn1hdrlen), 62 void *ctx); 63 64 #ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION 65 extern int verify_pefile_signature(const void *pebuf, unsigned pelen, 66 struct key *trusted_keys, 67 enum key_being_used_for usage); 68 #endif 69 70 #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ 71 #endif /* _LINUX_VERIFY_PEFILE_H */ 72