102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/* Asymmetric public-key algorithm definitions
|
|
*
|
|
* See Documentation/crypto/asymmetric-keys.txt
|
|
*
|
|
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _LINUX_PUBLIC_KEY_H
|
|
#define _LINUX_PUBLIC_KEY_H
|
|
|
|
#include <linux/mpi.h>
|
|
#include <crypto/hash_info.h>
|
|
|
|
enum pkey_algo {
|
|
PKEY_ALGO_DSA,
|
|
PKEY_ALGO_RSA,
|
|
PKEY_ALGO__LAST
|
|
};
|
|
|
|
extern const char *const pkey_algo_name[PKEY_ALGO__LAST];
|
|
extern const struct public_key_algorithm *pkey_algo[PKEY_ALGO__LAST];
|
|
|
|
/* asymmetric key implementation supports only up to SHA224 */
|
|
#define PKEY_HASH__LAST (HASH_ALGO_SHA224 + 1)
|
|
|
|
enum pkey_id_type {
|
|
PKEY_ID_PGP, /* OpenPGP generated key ID */
|
|
PKEY_ID_X509, /* X.509 arbitrary subjectKeyIdentifier */
|
|
PKEY_ID_TYPE__LAST
|
|
};
|
|
|
|
extern const char *const pkey_id_type_name[PKEY_ID_TYPE__LAST];
|
|
|
|
/*
|
|
* Cryptographic data for the public-key subtype of the asymmetric key type.
|
|
*
|
|
* Note that this may include private part of the key as well as the public
|
|
* part.
|
|
*/
|
|
struct public_key {
|
|
const struct public_key_algorithm *algo;
|
|
u8 capabilities;
|
|
#define PKEY_CAN_ENCRYPT 0x01
|
|
#define PKEY_CAN_DECRYPT 0x02
|
|
#define PKEY_CAN_SIGN 0x04
|
|
#define PKEY_CAN_VERIFY 0x08
|
|
enum pkey_algo pkey_algo : 8;
|
|
enum pkey_id_type id_type : 8;
|
|
union {
|
|
MPI mpi[5];
|
|
struct {
|
|
MPI p; /* DSA prime */
|
|
MPI q; /* DSA group order */
|
|
MPI g; /* DSA group generator */
|
|
MPI y; /* DSA public-key value = g^x mod p */
|
|
MPI x; /* DSA secret exponent (if present) */
|
|
} dsa;
|
|
struct {
|
|
MPI n; /* RSA public modulus */
|
|
MPI e; /* RSA public encryption exponent */
|
|
MPI d; /* RSA secret encryption exponent (if present) */
|
|
MPI p; /* RSA secret prime (if present) */
|
|
MPI q; /* RSA secret prime (if present) */
|
|
} rsa;
|
|
};
|
|
};
|
|
|
|
extern void public_key_destroy(void *payload);
|
|
|
|
/*
|
|
* Public key cryptography signature data
|
|
*/
|
|
struct public_key_signature {
|
|
u8 *digest;
|
|
u8 digest_size; /* Number of bytes in digest */
|
|
u8 nr_mpi; /* Occupancy of mpi[] */
|
|
enum pkey_algo pkey_algo : 8;
|
|
enum hash_algo pkey_hash_algo : 8;
|
|
union {
|
|
MPI mpi[2];
|
|
struct {
|
|
MPI s; /* m^d mod n */
|
|
} rsa;
|
|
struct {
|
|
MPI r;
|
|
MPI s;
|
|
} dsa;
|
|
};
|
|
};
|
|
|
|
struct key;
|
|
extern int verify_signature(const struct key *key,
|
|
const struct public_key_signature *sig);
|
|
|
|
#endif /* _LINUX_PUBLIC_KEY_H */
|