/**
*
* @param JWK $jwk
* @param Header $header
* @throws \UnexpectedValueException
* @return self
*/
public static function fromJWK(JWK $jwk, Header $header)
{
$jwk = SymmetricKeyJWK::fromJWK($jwk);
$alg = JWA::deriveAlgorithmName($header);
if ($alg != JWA::ALGO_DIR) {
throw new \UnexpectedValueException("Invalid algorithm '{$alg}'.");
}
return new self($jwk->key());
}
/**
*
* @param JWK $jwk
* @param Header $header
* @throws \UnexpectedValueException
* @return AESKWAlgorithm
*/
public static function fromJWK(JWK $jwk, Header $header)
{
$jwk = SymmetricKeyJWK::fromJWK($jwk);
$alg = JWA::deriveAlgorithmName($header, $jwk);
if (!array_key_exists($alg, self::MAP_ALGO_TO_CLASS)) {
throw new \UnexpectedValueException("Unsupported algorithm '{$alg}'.");
}
$cls = self::MAP_ALGO_TO_CLASS[$alg];
return new $cls($jwk->key());
}
/**
*
* @param JWK $jwk
* @param Header $header
* @throws \UnexpectedValueException
* @return PBES2Algorithm
*/
public static function fromJWK(JWK $jwk, Header $header)
{
$jwk = SymmetricKeyJWK::fromJWK($jwk);
if (!$header->hasPBES2SaltInput()) {
throw new \UnexpectedValueException("No salt input.");
}
$salt_input = $header->PBES2SaltInput()->saltInput();
if (!$header->hasPBES2Count()) {
throw new \UnexpectedValueException("No iteration count.");
}
$count = $header->PBES2Count()->value();
$alg = JWA::deriveAlgorithmName($header, $jwk);
if (!array_key_exists($alg, self::MAP_ALGO_TO_CLASS)) {
throw new \UnexpectedValueException("Unsupported algorithm '{$alg}'.");
}
$cls = self::MAP_ALGO_TO_CLASS[$alg];
return new $cls($jwk->key(), $salt_input, $count);
}
