diff options
Diffstat (limited to 'include/crypto/internal/rsa.h')
| -rw-r--r-- | include/crypto/internal/rsa.h | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/include/crypto/internal/rsa.h b/include/crypto/internal/rsa.h index 9e8f1590de98..071a1951b992 100644 --- a/include/crypto/internal/rsa.h +++ b/include/crypto/internal/rsa.h @@ -1,18 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * RSA internal helpers * * Copyright (c) 2015, Intel Corporation * Authors: Tadeusz Struk <tadeusz.struk@intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * */ #ifndef _RSA_HELPER_ #define _RSA_HELPER_ #include <linux/types.h> +#include <crypto/akcipher.h> /** * rsa_key - RSA key structure @@ -58,5 +54,33 @@ int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key, 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 |