1 /* Signature verification 2 * 3 * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells ([email protected]) 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 #define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL) 21 22 /* 23 * The use to which an asymmetric key is being put. 24 */ 25 enum key_being_used_for { 26 VERIFYING_MODULE_SIGNATURE, 27 VERIFYING_FIRMWARE_SIGNATURE, 28 VERIFYING_KEXEC_PE_SIGNATURE, 29 VERIFYING_KEY_SIGNATURE, 30 VERIFYING_KEY_SELF_SIGNATURE, 31 VERIFYING_UNSPECIFIED_SIGNATURE, 32 NR__KEY_BEING_USED_FOR 33 }; 34 extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR]; 35 36 #ifdef CONFIG_SYSTEM_DATA_VERIFICATION 37 38 struct key; 39 40 extern int verify_pkcs7_signature(const void *data, size_t len, 41 const void *raw_pkcs7, size_t pkcs7_len, 42 struct key *trusted_keys, 43 enum key_being_used_for usage, 44 int (*view_content)(void *ctx, 45 const void *data, size_t len, 46 size_t asn1hdrlen), 47 void *ctx); 48 49 #ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION 50 extern int verify_pefile_signature(const void *pebuf, unsigned pelen, 51 struct key *trusted_keys, 52 enum key_being_used_for usage); 53 #endif 54 55 #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ 56 #endif /* _LINUX_VERIFY_PEFILE_H */ 57