sha1.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   SHA1.java

package org.gudy.azureus2.core3.util;

import java.nio.ByteBuffer;

public final class SHA1
{

	private int h0;
	private int h1;
	private int h2;
	private int h3;
	private int h4;
	private ByteBuffer finalBuffer;
	private ByteBuffer saveBuffer;
	private int s0;
	private int s1;
	private int s2;
	private int s3;
	private int s4;
	private long length;
	private long saveLength;
	private static final int cacheSize = 4096;
	private byte cacheBlock[];

	public SHA1()
	{
		finalBuffer = ByteBuffer.allocate(64);
		finalBuffer.position(0);
		finalBuffer.limit(64);
		saveBuffer = ByteBuffer.allocate(64);
		saveBuffer.position(0);
		saveBuffer.limit(64);
		reset();
	}

	private final void transform(byte ar[], int offset)
	{
		int w0 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w1 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w2 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w3 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w4 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w5 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w6 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w7 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w8 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w9 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w10 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w11 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w12 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w13 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w14 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset++] & 0xff;
		int w15 = (ar[offset++] & 0xff) << 24 | (ar[offset++] & 0xff) << 16 | (ar[offset++] & 0xff) << 8 | ar[offset] & 0xff;
		int a = h0;
		int b = h1;
		int c = h2;
		int d = h3;
		int e = h4;
		e += (a << 5 | a >>> 27) + w0 + (b & c | ~b & d) + 0x5a827999;
		b = b << 30 | b >>> 2;
		d += (e << 5 | e >>> 27) + w1 + (a & b | ~a & c) + 0x5a827999;
		a = a << 30 | a >>> 2;
		c += (d << 5 | d >>> 27) + w2 + (e & a | ~e & b) + 0x5a827999;
		e = e << 30 | e >>> 2;
		b += (c << 5 | c >>> 27) + w3 + (d & e | ~d & a) + 0x5a827999;
		d = d << 30 | d >>> 2;
		a += (b << 5 | b >>> 27) + w4 + (c & d | ~c & e) + 0x5a827999;
		c = c << 30 | c >>> 2;
		e += (a << 5 | a >>> 27) + w5 + (b & c | ~b & d) + 0x5a827999;
		b = b << 30 | b >>> 2;
		d += (e << 5 | e >>> 27) + w6 + (a & b | ~a & c) + 0x5a827999;
		a = a << 30 | a >>> 2;
		c += (d << 5 | d >>> 27) + w7 + (e & a | ~e & b) + 0x5a827999;
		e = e << 30 | e >>> 2;
		b += (c << 5 | c >>> 27) + w8 + (d & e | ~d & a) + 0x5a827999;
		d = d << 30 | d >>> 2;
		a += (b << 5 | b >>> 27) + w9 + (c & d | ~c & e) + 0x5a827999;
		c = c << 30 | c >>> 2;
		e += (a << 5 | a >>> 27) + w10 + (b & c | ~b & d) + 0x5a827999;
		b = b << 30 | b >>> 2;
		d += (e << 5 | e >>> 27) + w11 + (a & b | ~a & c) + 0x5a827999;
		a = a << 30 | a >>> 2;
		c += (d << 5 | d >>> 27) + w12 + (e & a | ~e & b) + 0x5a827999;
		e = e << 30 | e >>> 2;
		b += (c << 5 | c >>> 27) + w13 + (d & e | ~d & a) + 0x5a827999;
		d = d << 30 | d >>> 2;
		a += (b << 5 | b >>> 27) + w14 + (c & d | ~c & e) + 0x5a827999;
		c = c << 30 | c >>> 2;
		e += (a << 5 | a >>> 27) + w15 + (b & c | ~b & d) + 0x5a827999;
		b = b << 30 | b >>> 2;
		w0 = w13 ^ w8 ^ w2 ^ w0;
		w0 = w0 << 1 | w0 >>> 31;
		d += (e << 5 | e >>> 27) + w0 + (a & b | ~a & c) + 0x5a827999;
		a = a << 30 | a >>> 2;
		w1 = w14 ^ w9 ^ w3 ^ w1;
		w1 = w1 << 1 | w1 >>> 31;
		c += (d << 5 | d >>> 27) + w1 + (e & a | ~e & b) + 0x5a827999;
		e = e << 30 | e >>> 2;
		w2 = w15 ^ w10 ^ w4 ^ w2;
		w2 = w2 << 1 | w2 >>> 31;
		b += (c << 5 | c >>> 27) + w2 + (d & e | ~d & a) + 0x5a827999;
		d = d << 30 | d >>> 2;
		w3 = w0 ^ w11 ^ w5 ^ w3;
		w3 = w3 << 1 | w3 >>> 31;
		a += (b << 5 | b >>> 27) + w3 + (c & d | ~c & e) + 0x5a827999;
		c = c << 30 | c >>> 2;
		w4 = w1 ^ w12 ^ w6 ^ w4;
		w4 = w4 << 1 | w4 >>> 31;
		e += (a << 5 | a >>> 27) + w4 + (b ^ c ^ d) + 0x6ed9eba1;
		b = b << 30 | b >>> 2;
		w5 = w2 ^ w13 ^ w7 ^ w5;
		w5 = w5 << 1 | w5 >>> 31;
		d += (e << 5 | e >>> 27) + w5 + (a ^ b ^ c) + 0x6ed9eba1;
		a = a << 30 | a >>> 2;
		w6 = w3 ^ w14 ^ w8 ^ w6;
		w6 = w6 << 1 | w6 >>> 31;
		c += (d << 5 | d >>> 27) + w6 + (e ^ a ^ b) + 0x6ed9eba1;
		e = e << 30 | e >>> 2;
		w7 = w4 ^ w15 ^ w9 ^ w7;
		w7 = w7 << 1 | w7 >>> 31;
		b += (c << 5 | c >>> 27) + w7 + (d ^ e ^ a) + 0x6ed9eba1;
		d = d << 30 | d >>> 2;
		w8 = w5 ^ w0 ^ w10 ^ w8;
		w8 = w8 << 1 | w8 >>> 31;
		a += (b << 5 | b >>> 27) + w8 + (c ^ d ^ e) + 0x6ed9eba1;
		c = c << 30 | c >>> 2;
		w9 = w6 ^ w1 ^ w11 ^ w9;
		w9 = w9 << 1 | w9 >>> 31;
		e += (a << 5 | a >>> 27) + w9 + (b ^ c ^ d) + 0x6ed9eba1;
		b = b << 30 | b >>> 2;
		w10 = w7 ^ w2 ^ w12 ^ w10;
		w10 = w10 << 1 | w10 >>> 31;
		d += (e << 5 | e >>> 27) + w10 + (a ^ b ^ c) + 0x6ed9eba1;
		a = a << 30 | a >>> 2;
		w11 = w8 ^ w3 ^ w13 ^ w11;
		w11 = w11 << 1 | w11 >>> 31;
		c += (d << 5 | d >>> 27) + w11 + (e ^ a ^ b) + 0x6ed9eba1;
		e = e << 30 | e >>> 2;
		w12 = w9 ^ w4 ^ w14 ^ w12;
		w12 = w12 << 1 | w12 >>> 31;
		b += (c << 5 | c >>> 27) + w12 + (d ^ e ^ a) + 0x6ed9eba1;
		d = d << 30 | d >>> 2;
		w13 = w10 ^ w5 ^ w15 ^ w13;
		w13 = w13 << 1 | w13 >>> 31;
		a += (b << 5 | b >>> 27) + w13 + (c ^ d ^ e) + 0x6ed9eba1;
		c = c << 30 | c >>> 2;
		w14 = w11 ^ w6 ^ w0 ^ w14;
		w14 = w14 << 1 | w14 >>> 31;
		e += (a << 5 | a >>> 27) + w14 + (b ^ c ^ d) + 0x6ed9eba1;
		b = b << 30 | b >>> 2;
		w15 = w12 ^ w7 ^ w1 ^ w15;
		w15 = w15 << 1 | w15 >>> 31;
		d += (e << 5 | e >>> 27) + w15 + (a ^ b ^ c) + 0x6ed9eba1;
		a = a << 30 | a >>> 2;
		w0 = w13 ^ w8 ^ w2 ^ w0;
		w0 = w0 << 1 | w0 >>> 31;
		c += (d << 5 | d >>> 27) + w0 + (e ^ a ^ b) + 0x6ed9eba1;
		e = e << 30 | e >>> 2;
		w1 = w14 ^ w9 ^ w3 ^ w1;
		w1 = w1 << 1 | w1 >>> 31;
		b += (c << 5 | c >>> 27) + w1 + (d ^ e ^ a) + 0x6ed9eba1;
		d = d << 30 | d >>> 2;
		w2 = w15 ^ w10 ^ w4 ^ w2;
		w2 = w2 << 1 | w2 >>> 31;
		a += (b << 5 | b >>> 27) + w2 + (c ^ d ^ e) + 0x6ed9eba1;
		c = c << 30 | c >>> 2;
		w3 = w0 ^ w11 ^ w5 ^ w3;
		w3 = w3 << 1 | w3 >>> 31;
		e += (a << 5 | a >>> 27) + w3 + (b ^ c ^ d) + 0x6ed9eba1;
		b = b << 30 | b >>> 2;
		w4 = w1 ^ w12 ^ w6 ^ w4;
		w4 = w4 << 1 | w4 >>> 31;
		d += (e << 5 | e >>> 27) + w4 + (a ^ b ^ c) + 0x6ed9eba1;
		a = a << 30 | a >>> 2;
		w5 = w2 ^ w13 ^ w7 ^ w5;
		w5 = w5 << 1 | w5 >>> 31;
		c += (d << 5 | d >>> 27) + w5 + (e ^ a ^ b) + 0x6ed9eba1;
		e = e << 30 | e >>> 2;
		w6 = w3 ^ w14 ^ w8 ^ w6;
		w6 = w6 << 1 | w6 >>> 31;
		b += (c << 5 | c >>> 27) + w6 + (d ^ e ^ a) + 0x6ed9eba1;
		d = d << 30 | d >>> 2;
		w7 = w4 ^ w15 ^ w9 ^ w7;
		w7 = w7 << 1 | w7 >>> 31;
		a += (b << 5 | b >>> 27) + w7 + (c ^ d ^ e) + 0x6ed9eba1;
		c = c << 30 | c >>> 2;
		w8 = w5 ^ w0 ^ w10 ^ w8;
		w8 = w8 << 1 | w8 >>> 31;
		e += (a << 5 | a >>> 27) + w8 + (b & c | b & d | c & d) + 0x8f1bbcdc;
		b = b << 30 | b >>> 2;
		w9 = w6 ^ w1 ^ w11 ^ w9;
		w9 = w9 << 1 | w9 >>> 31;
		d += (e << 5 | e >>> 27) + w9 + (a & b | a & c | b & c) + 0x8f1bbcdc;
		a = a << 30 | a >>> 2;
		w10 = w7 ^ w2 ^ w12 ^ w10;
		w10 = w10 << 1 | w10 >>> 31;
		c += (d << 5 | d >>> 27) + w10 + (e & a | e & b | a & b) + 0x8f1bbcdc;
		e = e << 30 | e >>> 2;
		w11 = w8 ^ w3 ^ w13 ^ w11;
		w11 = w11 << 1 | w11 >>> 31;
		b += (c << 5 | c >>> 27) + w11 + (d & e | d & a | e & a) + 0x8f1bbcdc;
		d = d << 30 | d >>> 2;
		w12 = w9 ^ w4 ^ w14 ^ w12;
		w12 = w12 << 1 | w12 >>> 31;
		a += (b << 5 | b >>> 27) + w12 + (c & d | c & e | d & e) + 0x8f1bbcdc;
		c = c << 30 | c >>> 2;
		w13 = w10 ^ w5 ^ w15 ^ w13;
		w13 = w13 << 1 | w13 >>> 31;
		e += (a << 5 | a >>> 27) + w13 + (b & c | b & d | c & d) + 0x8f1bbcdc;
		b = b << 30 | b >>> 2;
		w14 = w11 ^ w6 ^ w0 ^ w14;
		w14 = w14 << 1 | w14 >>> 31;
		d += (e << 5 | e >>> 27) + w14 + (a & b | a & c | b & c) + 0x8f1bbcdc;
		a = a << 30 | a >>> 2;
		w15 = w12 ^ w7 ^ w1 ^ w15;
		w15 = w15 << 1 | w15 >>> 31;
		c += (d << 5 | d >>> 27) + w15 + (e & a | e & b | a & b) + 0x8f1bbcdc;
		e = e << 30 | e >>> 2;
		w0 = w13 ^ w8 ^ w2 ^ w0;
		w0 = w0 << 1 | w0 >>> 31;
		b += (c << 5 | c >>> 27) + w0 + (d & e | d & a | e & a) + 0x8f1bbcdc;
		d = d << 30 | d >>> 2;
		w1 = w14 ^ w9 ^ w3 ^ w1;
		w1 = w1 << 1 | w1 >>> 31;
		a += (b << 5 | b >>> 27) + w1 + (c & d | c & e | d & e) + 0x8f1bbcdc;
		c = c << 30 | c >>> 2;
		w2 = w15 ^ w10 ^ w4 ^ w2;
		w2 = w2 << 1 | w2 >>> 31;
		e += (a << 5 | a >>> 27) + w2 + (b & c | b & d | c & d) + 0x8f1bbcdc;
		b = b << 30 | b >>> 2;
		w3 = w0 ^ w11 ^ w5 ^ w3;
		w3 = w3 << 1 | w3 >>> 31;
		d += (e << 5 | e >>> 27) + w3 + (a & b | a & c | b & c) + 0x8f1bbcdc;
		a = a << 30 | a >>> 2;