FileDocCategorySizeDatePackage
XYZMessageDigestSpi.javaAPI DocExample2616Sun Oct 25 18:13:36 GMT 1998None

XYZMessageDigest

public class XYZMessageDigest extends MessageDigestSpi implements Cloneable

Fields Summary
private int
hash
private int
store
private int
nBytes
Constructors Summary
public XYZMessageDigest()

		engineReset();
	
Methods Summary
public byte[]engineDigest()

		while (nBytes != 0)
			engineUpdate((byte) 0);
		byte b[] = new byte[4];
		b[0] = (byte) (hash >>> 24);
		b[1] = (byte) (hash >>> 16);
		b[2] = (byte) (hash >>>  8);
		b[3] = (byte) (hash >>>  0);
		engineReset();
		return b;
	
public voidengineReset()

		hash = 0;
		store = 0;
		nBytes = 0;
	
public voidengineUpdate(byte b)

		switch(nBytes) {
			case 0:
				store =  (b << 24) & 0xff000000;
				break;
			case 1:
				store |= (b << 16) & 0x00ff0000;
				break;
			case 2:
				store |= (b <<  8) & 0x0000ff00;
				break;
			case 3:
				store |= (b <<  0) & 0x000000ff;
				break;
		}
		nBytes++;
		if (nBytes == 4) {
			hash = hash ^ store;
			nBytes = 0;
			store = 0;
		}
	
public voidengineUpdate(byte[] b, int offset, int length)

		for (int i = 0; i < length; i++)
			engineUpdate(b[i + offset]);