代码拉取完成,页面将自动刷新
/* rsa-oaep-encrypt.c
The RSA publickey algorithm. OAEP encryption.
Copyright (C) 2021-2024 Nicolas Mora
Copyright (C) 2024 Daiki Ueno
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* 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.
or both in parallel, as here.
GNU Nettle is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see http://www.gnu.org/licenses/.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "rsa.h"
#include "nettle-internal.h"
#include "oaep.h"
#include "rsa-internal.h"
int
_rsa_oaep_encrypt (const struct rsa_public_key *key,
void *random_ctx, nettle_random_func *random,
void *hash_ctx, const struct nettle_hash *hash,
size_t label_length, const uint8_t *label,
size_t length, const uint8_t *message,
uint8_t *ciphertext)
{
mpz_t gibberish;
mpz_init (gibberish);
if (_oaep_encode_mgf1 (gibberish, key->size,
random_ctx, random,
hash_ctx, hash,
label_length, label,
length, message))
{
mpz_powm (gibberish, gibberish, key->e, key->n);
nettle_mpz_get_str_256 (key->size, ciphertext, gibberish);
mpz_clear (gibberish);
return 1;
}
mpz_clear (gibberish);
return 0;
}
int
rsa_oaep_sha256_encrypt (const struct rsa_public_key *key,
void *random_ctx, nettle_random_func *random,
size_t label_length, const uint8_t *label,
size_t length, const uint8_t *message,
uint8_t *ciphertext)
{
struct sha256_ctx ctx;
sha256_init (&ctx);
return _rsa_oaep_encrypt (key,
random_ctx, random,
&ctx, &nettle_sha256,
label_length, label,
length, message,
ciphertext);
}
int
rsa_oaep_sha384_encrypt (const struct rsa_public_key *key,
void *random_ctx, nettle_random_func *random,
size_t label_length, const uint8_t *label,
size_t length, const uint8_t *message,
uint8_t *ciphertext)
{
struct sha384_ctx ctx;
sha384_init (&ctx);
return _rsa_oaep_encrypt (key,
random_ctx, random,
&ctx, &nettle_sha384,
label_length, label,
length, message,
ciphertext);
}
int
rsa_oaep_sha512_encrypt (const struct rsa_public_key *key,
void *random_ctx, nettle_random_func *random,
size_t label_length, const uint8_t *label,
size_t length, const uint8_t *message,
uint8_t *ciphertext)
{
struct sha512_ctx ctx;
sha512_init (&ctx);
return _rsa_oaep_encrypt (key,
random_ctx, random,
&ctx, &nettle_sha512,
label_length, label,
length, message,
ciphertext);
}
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。