Here you can find the source of checksum(byte[] data)
| Parameter | Description |
|---|---|
| data | the data to checksum |
public static long checksum(byte[] data)
//package com.java2s; /*/* w ww . j a v a2 s .co m*/ * 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. */ public class Main { private static long _crc64Array[] = new long[256]; /** * Calculated the checksum of the given data array as a long value. * * @param data the data to checksum * @return the calculated checksum */ public static long checksum(byte[] data) { long crc64Number = 0; for (int i = 0; i < data.length; ++i) { int symbol = data[i]; long a = (crc64Number >>> 8); long b = (crc64Number ^ symbol) & 0xff; crc64Number = a ^ _crc64Array[(int) b]; } return crc64Number; } }