int safer_sk128_setup(const unsigned char *key, int keylen, int numrounds, symmetric_key *skey)
{
LTC_ARGCHK(key != NULL);
LTC_ARGCHK(skey != NULL);
if (numrounds != 0 && (numrounds < 6 || numrounds > LTC_SAFER_MAX_NOF_ROUNDS)) {
return CRYPT_INVALID_ROUNDS;
}
if (keylen != 16) {
return CRYPT_INVALID_KEYSIZE;
}
Safer_Expand_Userkey(key, key+8, (unsigned int)(numrounds != 0?numrounds:LTC_SAFER_SK128_DEFAULT_NOF_ROUNDS), 1, skey->safer.key);
return CRYPT_OK;
}
int safer_k64_setup(const unsigned char *key, int keylen, int numrounds, symmetric_key *skey)
{
_ARGCHK(key != NULL);
_ARGCHK(skey != NULL);
if (numrounds != 0 && (numrounds < 6 || numrounds > SAFER_MAX_NOF_ROUNDS)) {
return CRYPT_INVALID_ROUNDS;
}
if (keylen != 8) {
return CRYPT_INVALID_KEYSIZE;
}
Safer_Expand_Userkey(key, key, (unsigned int)(numrounds != 0 ?numrounds:SAFER_K64_DEFAULT_NOF_ROUNDS), 0, skey->safer.key);
return CRYPT_OK;
}
// Safer
static dword
func5(dword aKey)
{
static safer_key_t saferKey1;
static bool saferInited1 = false;
if ( ! saferInited1 ) {
Safer_Init_Module();
safer_block_t Key = { 0x9C, 0x56, 0xD1, 0x12, 0x23, 0xC0, 0xB4, 0x37 };
Safer_Expand_Userkey( Key, Key, 8, 0, saferKey1 );
saferInited1 = true;
}
safer_block_t inBlock = { 0 };
safer_block_t outBlock = { 0 };
*(dword*)(inBlock) = aKey;
Safer_Encrypt_Block( inBlock, saferKey1, outBlock );
return *(dword*)(outBlock);
}