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/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2016-2024 The TokTok team.
* Copyright © 2013 Tox project.
*/
#include "crypto_core_pack.h"
#include <string.h>
#include "bin_pack.h"
#include "bin_unpack.h"
#include "ccompat.h"
#include "crypto_core.h"
bool pack_extended_public_key(const Extended_Public_Key *key, Bin_Pack *bp)
{
uint8_t ext_key[EXT_PUBLIC_KEY_SIZE];
static_assert(sizeof(ext_key) == sizeof(key->enc) + sizeof(key->sig),
"extended secret key size is not the sum of the encryption and sign secret key sizes");
memcpy(ext_key, key->enc, sizeof(key->enc));
memcpy(&ext_key[sizeof(key->enc)], key->sig, sizeof(key->sig));
return bin_pack_bin(bp, ext_key, sizeof(ext_key));
}
bool pack_extended_secret_key(const Extended_Secret_Key *key, Bin_Pack *bp)
{
uint8_t ext_key[EXT_SECRET_KEY_SIZE];
static_assert(sizeof(ext_key) == sizeof(key->enc) + sizeof(key->sig),
"extended secret key size is not the sum of the encryption and sign secret key sizes");
memcpy(ext_key, key->enc, sizeof(key->enc));
memcpy(&ext_key[sizeof(key->enc)], key->sig, sizeof(key->sig));
const bool result = bin_pack_bin(bp, ext_key, sizeof(ext_key));
crypto_memzero(ext_key, sizeof(ext_key));
return result;
}
bool unpack_extended_public_key(Extended_Public_Key *key, Bin_Unpack *bu)
{
uint8_t ext_key[EXT_PUBLIC_KEY_SIZE];
if (!bin_unpack_bin_fixed(bu, ext_key, sizeof(ext_key))) {
return false;
}
memcpy(key->enc, ext_key, sizeof(key->enc));
memcpy(key->sig, &ext_key[sizeof(key->enc)], sizeof(key->sig));
return true;
}
bool unpack_extended_secret_key(Extended_Secret_Key *key, Bin_Unpack *bu)
{
uint8_t ext_key[EXT_SECRET_KEY_SIZE];
if (!bin_unpack_bin_fixed(bu, ext_key, sizeof(ext_key))) {
return false;
}
memcpy(key->enc, ext_key, sizeof(key->enc));
memcpy(key->sig, &ext_key[sizeof(key->enc)], sizeof(key->sig));
crypto_memzero(ext_key, sizeof(ext_key));
return true;
}
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