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TOMOYO Linux Cross Reference
Linux/include/crypto/public_key.h

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  1 /* Asymmetric public-key algorithm definitions
  2  *
  3  * See Documentation/crypto/asymmetric-keys.txt
  4  *
  5  * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
  6  * Written by David Howells (dhowells@redhat.com)
  7  *
  8  * This program is free software; you can redistribute it and/or
  9  * modify it under the terms of the GNU General Public Licence
 10  * as published by the Free Software Foundation; either version
 11  * 2 of the Licence, or (at your option) any later version.
 12  */
 13 
 14 #ifndef _LINUX_PUBLIC_KEY_H
 15 #define _LINUX_PUBLIC_KEY_H
 16 
 17 /*
 18  * The use to which an asymmetric key is being put.
 19  */
 20 enum key_being_used_for {
 21         VERIFYING_MODULE_SIGNATURE,
 22         VERIFYING_FIRMWARE_SIGNATURE,
 23         VERIFYING_KEXEC_PE_SIGNATURE,
 24         VERIFYING_KEY_SIGNATURE,
 25         VERIFYING_KEY_SELF_SIGNATURE,
 26         VERIFYING_UNSPECIFIED_SIGNATURE,
 27         NR__KEY_BEING_USED_FOR
 28 };
 29 extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR];
 30 
 31 /*
 32  * Cryptographic data for the public-key subtype of the asymmetric key type.
 33  *
 34  * Note that this may include private part of the key as well as the public
 35  * part.
 36  */
 37 struct public_key {
 38         void *key;
 39         u32 keylen;
 40         const char *id_type;
 41         const char *pkey_algo;
 42 };
 43 
 44 extern void public_key_destroy(void *payload);
 45 
 46 /*
 47  * Public key cryptography signature data
 48  */
 49 struct public_key_signature {
 50         u8 *s;                  /* Signature */
 51         u32 s_size;             /* Number of bytes in signature */
 52         u8 *digest;
 53         u8 digest_size;         /* Number of bytes in digest */
 54         const char *pkey_algo;
 55         const char *hash_algo;
 56 };
 57 
 58 extern struct asymmetric_key_subtype public_key_subtype;
 59 struct key;
 60 extern int verify_signature(const struct key *key,
 61                             const struct public_key_signature *sig);
 62 
 63 struct asymmetric_key_id;
 64 extern struct key *x509_request_asymmetric_key(struct key *keyring,
 65                                                const struct asymmetric_key_id *id,
 66                                                const struct asymmetric_key_id *skid,
 67                                                bool partial);
 68 
 69 int public_key_verify_signature(const struct public_key *pkey,
 70                                 const struct public_key_signature *sig);
 71 
 72 #endif /* _LINUX_PUBLIC_KEY_H */
 73 

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