1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * RSA internal helpers
4  *
5  * Copyright (c) 2015, Intel Corporation
6  * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
7  */
8 #ifndef _RSA_HELPER_
9 #define _RSA_HELPER_
10 #include <linux/types.h>
11 
12 /**
13  * rsa_key - RSA key structure
14  * @n           : RSA modulus raw byte stream
15  * @e           : RSA public exponent raw byte stream
16  * @d           : RSA private exponent raw byte stream
17  * @p           : RSA prime factor p of n raw byte stream
18  * @q           : RSA prime factor q of n raw byte stream
19  * @dp          : RSA exponent d mod (p - 1) raw byte stream
20  * @dq          : RSA exponent d mod (q - 1) raw byte stream
21  * @qinv        : RSA CRT coefficient q^(-1) mod p raw byte stream
22  * @n_sz        : length in bytes of RSA modulus n
23  * @e_sz        : length in bytes of RSA public exponent
24  * @d_sz        : length in bytes of RSA private exponent
25  * @p_sz        : length in bytes of p field
26  * @q_sz        : length in bytes of q field
27  * @dp_sz       : length in bytes of dp field
28  * @dq_sz       : length in bytes of dq field
29  * @qinv_sz     : length in bytes of qinv field
30  */
31 struct rsa_key {
32 	const u8 *n;
33 	const u8 *e;
34 	const u8 *d;
35 	const u8 *p;
36 	const u8 *q;
37 	const u8 *dp;
38 	const u8 *dq;
39 	const u8 *qinv;
40 	size_t n_sz;
41 	size_t e_sz;
42 	size_t d_sz;
43 	size_t p_sz;
44 	size_t q_sz;
45 	size_t dp_sz;
46 	size_t dq_sz;
47 	size_t qinv_sz;
48 };
49 
50 int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,
51 		      unsigned int key_len);
52 
53 int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,
54 		       unsigned int key_len);
55 
56 extern struct crypto_template rsa_pkcs1pad_tmpl;
57 #endif
58