com.qcloud.cos.internal.crypto.KMSEncryptionMaterials Maven / Gradle / Ivy
/*
* Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
* According to cos feature, we modify some class，comment, field name, etc.
*/
package com.qcloud.cos.internal.crypto;
import java.io.Serializable;
import java.security.KeyPair;
import javax.crypto.SecretKey;
/**
* KMS specific encryption materials.
*
* The KEK has no relevance on the client-side, as KMS only requires the CMK
* id to be used to uniquely identify the KEK on the server side.
*/
public class KMSEncryptionMaterials extends EncryptionMaterials implements Serializable {
/**
* Name of the material description to be persisted in COS for the KMS's
* customer master key id.
*/
public static final String CUSTOMER_MASTER_KEY_ID = "kms_cmk_id";
private String customerMasterKeyId = null;
/**
* @param defaultCustomerMasterKeyId
* KMS's customer master key id; must not be null
*/
public KMSEncryptionMaterials(String defaultCustomerMasterKeyId) {
super(null, null);
if (defaultCustomerMasterKeyId == null
|| defaultCustomerMasterKeyId.length() == 0)
throw new IllegalArgumentException(
"The default customer master key id must be specified");
customerMasterKeyId = defaultCustomerMasterKeyId;
}
/**
* Always throws UnsupportedOperationException.
*/
@Override
public final KeyPair getKeyPair() {
throw new UnsupportedOperationException();
}
/**
* Always throws UnsupportedOperationException.
*/
@Override
public final SecretKey getSymmetricKey() {
throw new UnsupportedOperationException();
}
/**
* {@inheritDoc}
*
* Always returns true.
*
* @return true
*/
@Override
public final boolean isKMSEnabled() {
return true;
}
/**
* Returns the default KMS's Customer Master Key ID; or null if there
* isn't one.
*/
@Override
public String getCustomerMasterKeyId() {
return customerMasterKeyId;
}
}