JAVA-API.rar_3des_java 3des

package cn.tienon.api; /************************************************ MD5算法的Java Bean @author:qiuming Last Modified:01,04,2015 *************************************************/ import java.lang.reflect.*; public class apimd5 { public static void main(String args[]) { apimd5 m = new apimd5(); if (Array.getLength(args) == 0) { //如果没有参数，执行标准的Test Suite System.out.println("MD5 Test suite:"); System.out.println("MD5(\"\"):"+m.strs_GenMD5Str("")); System.out.println("MD5(\"a\"):"+m.strs_GenMD5Str("a")); System.out.println("MD5(\"abc\"):"+m.strs_GenMD5Str("abc")); System.out.println("MD5(\"message digest\"):"+m.strs_GenMD5Str("message digest")); System.out.println("MD5(\"abcdefghijklmnopqrstuvwxyz\"):"+ m.strs_GenMD5Str("abcdefghijklmnopqrstuvwxyz")); System.out.println("MD5(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\"):"+ m.strs_GenMD5Str("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")); } else { System.out.println("MD5(" + args[0] + ")=" + m.strs_GenMD5Str(args[0])); } System.out.println("MD5测试完成！"); } //下面这些S11-S44实际上是一个4*4的矩阵，在原始的C实现中是用#define 实现的， //这里把它们实现成为static final是表示了只读，既能在同一个进程空间内的多个Instance间共享 static final int S11 = 7; static final int S12 = 12; static final int S13 = 17; static final int S14 = 22; static final int S21 = 5; static final int S22 = 9; static final int S23 = 14; static final int S24 = 20; static final int S31 = 4; static final int S32 = 11; static final int S33 = 16; static final int S34 = 23; static final int S41 = 6; static final int S42 = 10; static final int S43 = 15; static final int S44 = 21; static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; //下面的三个成员是MD5计算过程中用到的3个核心数据，在原始的C实现中 被定义到MD5_CTX结构中 private long[] state = new long[4]; //state (ABCD) private long[] count = new long[2]; //number of bits, modulo 2^64 (lsb first) private byte[] buffer = new byte[64]; //input buffer //digestHexStr是MD5的唯一一个公共成员，是最新一次计算结果的16进制ASCII表示. public String digestHexStr; //digest,是最新一次计算结果的2进制内部表示，表示128bit的MD5值. private byte[] digest = new byte[32]; //strs_GenMD5Str是类Md5最主要的公共方法，入口参数是你想要进行MD5变换的字符串返回的是变换完的结果，这个结果是从公共成员digestHexStr取得的． public String strs_GenMD5Str(String inbuf) { md5Init(); md5Update(inbuf.getBytes(), inbuf.length()); md5Final(); digestHexStr = ""; for (int i = 0; i < 32; i++) { digestHexStr += byteHEX(digest[i]); } return digestHexStr.substring(0,32); } //这是Md5这个类的标准构造函数，JavaBean要求有一个public的并且没有参数的构造函数 public apimd5() { md5Init(); return; } //md5Init是一个初始化函数，初始化核心变量，装入标准的幻数 private void md5Init(){ count[0] = 0L; count[1] = 0L; state[0] = 0x67452301L; state[1] = 0xefcdab89L; state[2] = 0x98badcfeL; state[3] = 0x10325476L; return; } //F, G, H ,I 是4个基本的Md5函数,在C实现中它们是简单的位运算,出于效率的考虑实现成了宏; //在java中，我们把它们实现成了private方法，名字保持了原来C中的。 private long F(long x, long y, long z) { return (x & y) | ((~x) & z); } private long G(long x, long y, long z) { return (x & z) | (y & (~z)); } private long H(long x, long y, long z) { return x ^ y ^ z; } private long I(long x, long y, long z) { return y ^ (x | (~z)); } //FF,GG,HH和II将调用F,G,H,I进行近一步变换 //FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. //Rotation is separate from addition to prevent recomputation. private long FF(long a, long b, long c, long d, long x, long s, long ac){ a += F (b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long GG(long a, long b, long c, long d, long x, long s, long ac){ a += G (b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long HH(long a, long b, long c, long d, long x, long s, long ac){ a += H (b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } private long II(long a, long b, long c, long d, long x, long s, long ac){ a += I (b, c, d) + x + ac; a = ((int) a << s) | ((int) a >>> (32 - s)); a += b; return a; } //md5Update是MD5的主计算过程，inbuf是要变换的字节串，inputlen是长度， //这个函数由getMD5ofStr调用，调用之前需要调用md5init，因此把它设计成private修饰 private void md5Update(byte[] inbuf, int inputLen){ int i, index, partLen; byte[] block = new byte[64]; index = (int)(count[0] >>> 3) & 0x3F; //Update number of bits if ((count[0] += (inputLen << 3)) < (inputLen << 3)) count[1]++; count[1] += (inputLen >>> 29); partLen = 64 - index; //Transform as many times as possible. if (inputLen >= partLen) { md5Memcpy(buffer, inbuf, index, 0, partLen); md5Transform(buffer); for (i = partLen; i + 63 < inputLen; i += 64){ md5Memcpy(block, inbuf, 0, i, 64); md5Transform (block); } index = 0; } else{ i = 0; } md5Memcpy(buffer, inbuf, index, i, inputLen - i); } //md5Final整理和填写输出结果 private void md5Final () { byte[] bits = new byte[8]; int index, padLen; //Save number of bits Encode (bits, count, 8); //Pad out to 56 mod 64. index = (int)(count[0] >>> 3) & 0x3f; padLen = (index < 56) ? (56 - index) : (120 - index); md5Update (PADDING, padLen); //Append length (before padding) md5Update(bits, 8); //Store state in digest Encode (digest, state, 16); } //md5Memcpy是一个内部使用的byte数组的块拷贝函数， //从input的inpos开始把len长度的字节拷贝到output的outpos位置开始 private void md5Memcpy (byte[] output,byte[] input,int outpos,int inpos,int len){ int i; for (i = 0; i < len; i++) output[outpos + i] = input[inpos + i]; } //md5Transform是MD5核心变换程序，有md5Update调用，block是分块的原始字节 private void md5Transform (byte block[]) { long a = state[0], b = state[1], c = state[2], d = state[3]; long[] x = new long[16]; Decode (x, block, 64); /* Round 1 */ a = FF (a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */ d = FF (d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */ c = FF (c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */ b = FF (b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */ a = FF (a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */ d = FF (d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */ c = FF (c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */ b = FF (b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */ a = FF (a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */ d = FF (d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */ c = FF (c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */ b = FF (b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */ a = FF (a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */ d = FF (d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */ c = FF (c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */ b = FF (b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */ /* Round 2 */ a = GG (a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */ d = GG (d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */ c = GG (c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */ b = GG (b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */ a = GG (a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */ d = GG (d, a, b, c, x[10], S22, 0x2441453L); /* 22 */ c = GG (c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */ b = GG (b, c, d, a, x[4], S24, 0xe7d3fbc8L); /*