1 /* 2 * CRC32 3 * 4 * Author: Lasse Collin <lasse.collin (at) tukaani.org> 5 * 6 * This file has been put into the public domain. 7 * You can do whatever you want with this file. 8 */ 9 10 package org.tukaani.xz.check; 11 12 public class CRC32 extends Check { 13 private final java.util.zip.CRC32 state = new java.util.zip.CRC32(); 14 15 public CRC32() { 16 size = 4; 17 name = "CRC32"; 18 } 19 20 public void update(byte[] buf, int off, int len) { 21 state.update(buf, off, len); 22 } 23 24 public byte[] finish() { 25 long value = state.getValue(); 26 byte[] buf = { (byte)(value), 27 (byte)(value >>> 8), 28 (byte)(value >>> 16), 29 (byte)(value >>> 24) }; 30 state.reset(); 31 return buf; 32 } 33 } 34
