osb/source/extern/curve25519/include/curve25519_dh.h

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2023-07-12 05:13:30 +00:00
/* The MIT License (MIT)
*
* Copyright (c) 2015 mehdi sotoodeh
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __curve25519_dh_key_exchange_h__
#define __curve25519_dh_key_exchange_h__
#ifdef __cplusplus
extern "C" {
#endif
/* Return public key associated with sk */
/* sk will be trimmed on return */
void curve25519_dh_CalculatePublicKey(
unsigned char *pk, /* [32-bytes] OUT: Public key */
unsigned char *sk); /* [32-bytes] IN/OUT: Your secret key */
/* Faster alternative for curve25519_dh_CalculatePublicKey */
/* sk will be trimmed on return */
void curve25519_dh_CalculatePublicKey_fast(
unsigned char *pk, /* [32-bytes] OUT: Public key */
unsigned char *sk); /* [32-bytes] IN/OUT: Your secret key */
/* sk will be trimmed on return */
void curve25519_dh_CreateSharedKey(
unsigned char *shared, /* [32-bytes] OUT: Created shared key */
const unsigned char *pk, /* [32-bytes] IN: Other side's public key */
unsigned char *sk); /* [32-bytes] IN/OUT: Your secret key */
#ifdef __cplusplus
}
#endif
#endif /* __curve25519_dh_key_exchange_h__ */