Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* RSA internal helpers
|
|
*
|
|
* Copyright (c) 2015, Intel Corporation
|
|
* Authors: Tadeusz Struk <tadeusz.struk@intel.com>
|
|
*/
|
|
#ifndef _RSA_HELPER_
|
|
#define _RSA_HELPER_
|
|
#include <linux/types.h>
|
|
#include <crypto/akcipher.h>
|
|
|
|
/**
|
|
* rsa_key - RSA key structure
|
|
* @n : RSA modulus raw byte stream
|
|
* @e : RSA public exponent raw byte stream
|
|
* @d : RSA private exponent raw byte stream
|
|
* @p : RSA prime factor p of n raw byte stream
|
|
* @q : RSA prime factor q of n raw byte stream
|
|
* @dp : RSA exponent d mod (p - 1) raw byte stream
|
|
* @dq : RSA exponent d mod (q - 1) raw byte stream
|
|
* @qinv : RSA CRT coefficient q^(-1) mod p raw byte stream
|
|
* @n_sz : length in bytes of RSA modulus n
|
|
* @e_sz : length in bytes of RSA public exponent
|
|
* @d_sz : length in bytes of RSA private exponent
|
|
* @p_sz : length in bytes of p field
|
|
* @q_sz : length in bytes of q field
|
|
* @dp_sz : length in bytes of dp field
|
|
* @dq_sz : length in bytes of dq field
|
|
* @qinv_sz : length in bytes of qinv field
|
|
*/
|
|
struct rsa_key {
|
|
const u8 *n;
|
|
const u8 *e;
|
|
const u8 *d;
|
|
const u8 *p;
|
|
const u8 *q;
|
|
const u8 *dp;
|
|
const u8 *dq;
|
|
const u8 *qinv;
|
|
size_t n_sz;
|
|
size_t e_sz;
|
|
size_t d_sz;
|
|
size_t p_sz;
|
|
size_t q_sz;
|
|
size_t dp_sz;
|
|
size_t dq_sz;
|
|
size_t qinv_sz;
|
|
};
|
|
|
|
int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,
|
|
unsigned int key_len);
|
|
|
|
int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,
|
|
unsigned int key_len);
|
|
|
|
#define RSA_PUB (true)
|
|
#define RSA_PRIV (false)
|
|
|
|
static inline int rsa_set_key(struct crypto_akcipher *child,
|
|
unsigned int *key_size, bool is_pubkey,
|
|
const void *key, unsigned int keylen)
|
|
{
|
|
int err;
|
|
|
|
*key_size = 0;
|
|
|
|
if (is_pubkey)
|
|
err = crypto_akcipher_set_pub_key(child, key, keylen);
|
|
else
|
|
err = crypto_akcipher_set_priv_key(child, key, keylen);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Find out new modulus size from rsa implementation */
|
|
err = crypto_akcipher_maxsize(child);
|
|
if (err > PAGE_SIZE)
|
|
return -ENOTSUPP;
|
|
|
|
*key_size = err;
|
|
return 0;
|
|
}
|
|
|
|
extern struct crypto_template rsa_pkcs1pad_tmpl;
|
|
extern struct crypto_template rsassa_pkcs1_tmpl;
|
|
#endif
|