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 * Indicate that both builtin trusted keys and secondary trusted keys 17 * should be used. 18 */ 19 #define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL) 20 21 /* 22 * The use to which an asymmetric key is being put. 23 */ 24 enum key_being_used_for { 25 VERIFYING_MODULE_SIGNATURE, 26 VERIFYING_FIRMWARE_SIGNATURE, 27 VERIFYING_KEXEC_PE_SIGNATURE, 28 VERIFYING_KEY_SIGNATURE, 29 VERIFYING_KEY_SELF_SIGNATURE, 30 VERIFYING_UNSPECIFIED_SIGNATURE, 31 NR__KEY_BEING_USED_FOR 32 }; 33 extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR]; 34 35 struct key; 36 struct public_key_signature; 37 38 extern int verify_signature_one(const struct public_key_signature *sig, 39 struct key *trusted_keys, const char *keyid); 40 41 #ifdef CONFIG_SYSTEM_DATA_VERIFICATION 42 43 extern int verify_pkcs7_signature(const void *data, size_t len, 44 const void *raw_pkcs7, size_t pkcs7_len, 45 struct key *trusted_keys, 46 enum key_being_used_for usage, 47 int (*view_content)(void *ctx, 48 const void *data, size_t len, 49 size_t asn1hdrlen), 50 void *ctx); 51 52 #ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION 53 extern int verify_pefile_signature(const void *pebuf, unsigned pelen, 54 struct key *trusted_keys, 55 enum key_being_used_for usage); 56 #endif 57 58 #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ 59 #endif /* _LINUX_VERIFY_PEFILE_H */ 60