include/crypto/ecdh.h

   1 /*
   2  * ECDH params to be used with kpp API
   3  *
   4  * Copyright (c) 2016, Intel Corporation
   5  * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  */
  13 #ifndef _CRYPTO_ECDH_
  14 #define _CRYPTO_ECDH_
  15
  16 /* Curves IDs */
  17 #define ECC_CURVE_NIST_P192     0x0001
  18 #define ECC_CURVE_NIST_P256     0x0002
  19
  20 struct ecdh {
  21         unsigned short curve_id;
  22         char *key;
  23         unsigned short key_size;
  24 };
  25
  26 int crypto_ecdh_key_len(const struct ecdh *params);
  27 int crypto_ecdh_encode_key(char *buf, unsigned int len, const struct ecdh *p);
  28 int crypto_ecdh_decode_key(const char *buf, unsigned int len, struct ecdh *p);
  29
  30 #endif