public static function encodeCek($encryptionMaterials, $cek)
{
$encrypKeyAlg = EncryptionUtil::getKeyEncryptionAlgm($encryptionMaterials);
if ($encrypKeyAlg === "AES") {
$secretKey = $encryptionMaterials;
$encryptedSek = EncryptionUtil::encode_AES_ECB($cek, $secretKey);
if (empty($encryptedSek)) {
throw new Ks3ClientException("can not encode cek useing AES");
}
} else {
if ($encrypKeyAlg === "RSA") {
$encryptedSek = "";
openssl_public_encrypt($cek, $encryptedSek, $encryptionMaterials[0]);
if (empty($encryptedSek)) {
throw new Ks3ClientException("can not encode cek useing RSA");
}
}
}
return $encryptedSek;
}