core/lib/libtomcrypt/src/pk/x25519/x25519_export.c

// SPDX-License-Identifier: BSD-2-Clause
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt_private.h"

/**
  @file x25519_export.c
  Export a X25519 key to a binary packet, Steffen Jaeckel
*/

#ifdef LTC_CURVE25519

/**
   Export a X25519 key to a binary packet
   @param out    [out] The destination for the key
   @param outlen [in/out] The max size and resulting size of the X25519 key
   @param type   Which type of key (PK_PRIVATE, PK_PUBLIC|PK_STD or PK_PUBLIC)
   @param key    The key you wish to export
   @return CRYPT_OK if successful
*/
int x25519_export(      unsigned char *out, unsigned long *outlen,
                                  int  which,
                  const    curve25519_key *key)
{
   LTC_ARGCHK(key != NULL);

   if (key->algo != PKA_X25519) return CRYPT_PK_INVALID_TYPE;

   return ec25519_export(out, outlen, which, key);
}

#endif

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