/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#include "tomcrypt_private.h"
/**
@file x25519_import_raw.c
Set the parameters of a X25519 key, Steffen Jaeckel
*/
#ifdef LTC_CURVE25519
/**
Set the parameters of a X25519 key
@param in The key
@param inlen The length of the key
@param which Which type of key (PK_PRIVATE or PK_PUBLIC)
@param key [out] Destination of the key
@return CRYPT_OK if successful
*/
int x25519_import_raw(const unsigned char *in, unsigned long inlen, int which, curve25519_key *key)
{
LTC_ARGCHK(in != NULL);
LTC_ARGCHK(inlen == 32uL);
LTC_ARGCHK(key != NULL);
if (which == PK_PRIVATE) {
XMEMCPY(key->priv, in, sizeof(key->priv));
tweetnacl_crypto_scalarmult_base(key->pub, key->priv);
} else if (which == PK_PUBLIC) {
XMEMCPY(key->pub, in, sizeof(key->pub));
} else {
return CRYPT_INVALID_ARG;
}
key->algo = PKA_X25519;
key->type = which;
return CRYPT_OK;
}
#endif