| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License 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. |
| * |
| */ |
| package org.apache.kerby.kerberos.kerb.common; |
| |
| import org.apache.kerby.asn1.type.Asn1Encodeable; |
| import org.apache.kerby.kerberos.kerb.KrbCodec; |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.crypto.CheckSumHandler; |
| import org.apache.kerby.kerberos.kerb.crypto.EncTypeHandler; |
| import org.apache.kerby.kerberos.kerb.crypto.EncryptionHandler; |
| import org.apache.kerby.kerberos.kerb.type.base.CheckSum; |
| import org.apache.kerby.kerberos.kerb.type.base.CheckSumType; |
| import org.apache.kerby.kerberos.kerb.type.base.EncryptionKey; |
| import org.apache.kerby.kerberos.kerb.type.base.KeyUsage; |
| |
| public class CheckSumUtil { |
| |
| public static CheckSum makeCheckSum(CheckSumType checkSumType, byte[] input) |
| throws KrbException { |
| return CheckSumHandler.checksum(checkSumType, input); |
| } |
| |
| public static CheckSum makeCheckSumWithKey(CheckSumType checkSumType, byte[] input, |
| EncryptionKey key, KeyUsage usage) |
| throws KrbException { |
| if (checkSumType == null || checkSumType == CheckSumType.NONE) { |
| EncTypeHandler handler = EncryptionHandler.getEncHandler(key.getKeyType()); |
| checkSumType = handler.checksumType(); |
| if (checkSumType == null) { |
| // By default, may be configured |
| checkSumType = CheckSumType.CMAC_CAMELLIA128; |
| } |
| } |
| return CheckSumHandler.checksumWithKey(checkSumType, input, key.getKeyData(), usage); |
| } |
| |
| public static CheckSum seal(Asn1Encodeable asn1Object, |
| CheckSumType checkSumType) throws KrbException { |
| byte[] encoded = KrbCodec.encode(asn1Object); |
| CheckSum checksum = makeCheckSum(checkSumType, encoded); |
| return checksum; |
| } |
| |
| public static CheckSum seal(Asn1Encodeable asn1Object, CheckSumType checkSumType, |
| EncryptionKey key, KeyUsage usage) throws KrbException { |
| byte[] encoded = KrbCodec.encode(asn1Object); |
| CheckSum checksum = makeCheckSumWithKey(checkSumType, encoded, key, usage); |
| return checksum; |
| } |
| } |