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Add some historic code just for the heck of it.

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Adam Ierymenko 2017-05-04 10:42:22 -07:00
commit 54c47a1e03
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attic/historic/anode/libanode/impl/ec.h Normal file
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/* libanode: the Anode C reference implementation
* Copyright (C) 2009-2010 Adam Ierymenko <adam.ierymenko@gmail.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 3 of the License, or
* (at your option) any later version.
*
* This program 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 a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Elliptic curve glue -- hides OpenSSL code behind this source module */
#ifndef _ANODE_EC_H
#define _ANODE_EC_H
#include "misc.h"
/* Right now, only one mode is supported: NIST-P-256. This is the only mode
* supported in the spec as well, and should be good for quite some time.
* If other modes are needed this code will need to be refactored. */
/* NIST-P-256 prime size in bytes */
#define ANODE_EC_PRIME_BYTES 32
/* Sizes of key fields */
#define ANODE_EC_GROUP NID_X9_62_prime256v1
#define ANODE_EC_PUBLIC_KEY_BYTES (ANODE_EC_PRIME_BYTES + 1)
#define ANODE_EC_PRIVATE_KEY_BYTES ANODE_EC_PRIME_BYTES
/* Larger of public or private key bytes, used for buffers */
#define ANODE_EC_MAX_BYTES ANODE_EC_PUBLIC_KEY_BYTES
struct AnodeECKey
{
unsigned char key[ANODE_EC_MAX_BYTES];
unsigned int bytes;
};
struct AnodeECKeyPair
{
struct AnodeECKey pub;
struct AnodeECKey priv;
void *internal_key;
};
/* Key management functions */
int AnodeECKeyPair_generate(struct AnodeECKeyPair *pair);
int AnodeECKeyPair_init(struct AnodeECKeyPair *pair,const struct AnodeECKey *pub,const struct AnodeECKey *priv);
void AnodeECKeyPair_destroy(struct AnodeECKeyPair *pair);
int AnodeECKeyPair_agree(const struct AnodeECKeyPair *my_key_pair,const struct AnodeECKey *their_pub_key,unsigned char *key_buf,unsigned int key_len);
/* Provides access to the secure PRNG used to generate keys */
void AnodeEC_random(unsigned char *buf,unsigned int len);
#endif