Java的HMAC_SHA1算法源码

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源码下载地址：http://download.csdn.net/detail/yanzhibo/4963691
public class SHA1 {    private final int[] abcde = {0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 };    // 摘要数据存储数组    private int[] digestInt = new int[5];    // 计算过程中的临时数据存储数组    private int[] tmpData = new int[80];    // 计算sha-1摘要    private int process_input_bytes(byte[] bytedata) {        // 初试化常量        System.arraycopy(abcde, 0, digestInt, 0, abcde.length);        // 格式化输入字节数组，补10及长度数据        byte[] newbyte = byteArrayFormatData(bytedata);        // 获取数据摘要计算的数据单元个数        int MCount = newbyte.length / 64;        // 循环对每个数据单元进行摘要计算        for (int pos = 0; pos < MCount; pos++) {            // 将每个单元的数据转换成16个整型数据，并保存到tmpData的前16个数组元素中            for (int j = 0; j < 16; j++) {                tmpData[j] = byteArrayToInt(newbyte, (pos * 64) + (j * 4));            }            // 摘要计算函数            encrypt();        }        return 20;    }    // 格式化输入字节数组格式    private byte[] byteArrayFormatData(byte[] bytedata) {        // 补0数量        int zeros = 0;        // 补位后总位数        int size = 0;        // 原始数据长度        int n = bytedata.length;        // 模64后的剩余位数        int m = n % 64;        // 计算添加0的个数以及添加10后的总长度        if (m < 56) {            zeros = 55 - m;            size = n - m + 64;        } else if (m == 56) {            zeros = 63;            size = n + 8 + 64;        } else {            zeros = 63 - m + 56;            size = (n + 64) - m + 64;        }        // 补位后生成的新数组内容        byte[] newbyte = new byte[size];        // 复制数组的前面部分        System.arraycopy(bytedata, 0, newbyte, 0, n);        // 获得数组Append数据元素的位置        int l = n;        // 补1操作        newbyte[l++] = (byte) 0x80;        // 补0操作        for (int i = 0; i < zeros; i++) {            newbyte[l++] = (byte) 0x00;        }        // 计算数据长度，补数据长度位共8字节，长整型        long N = (long) n * 8;        byte h8 = (byte) (N & 0xFF);        byte h7 = (byte) ((N >> 8) & 0xFF);        byte h6 = (byte) ((N >> 16) & 0xFF);        byte h5 = (byte) ((N >> 24) & 0xFF);        byte h4 = (byte) ((N >> 32) & 0xFF);        byte h3 = (byte) ((N >> 40) & 0xFF);        byte h2 = (byte) ((N >> 48) & 0xFF);        byte h1 = (byte) (N >> 56);        newbyte[l++] = h1;        newbyte[l++] = h2;        newbyte[l++] = h3;        newbyte[l++] = h4;        newbyte[l++] = h5;        newbyte[l++] = h6;        newbyte[l++] = h7;        newbyte[l++] = h8;        return newbyte;    }    private int f1(int x, int y, int z) {        return (x & y) | (~x & z);    }    private int f2(int x, int y, int z) {        return x ^ y ^ z;    }    private int f3(int x, int y, int z) {        return (x & y) | (x & z) | (y & z);    }    private int f4(int x, int y) {        return (x << y) | x >>> (32 - y);    }    // 单元摘要计算函数    private void encrypt() {        for (int i = 16; i <= 79; i++) {            tmpData[i] = f4(tmpData[i - 3] ^ tmpData[i - 8] ^ tmpData[i - 14] ^                    tmpData[i - 16], 1);        }        int[] tmpabcde = new int[5];        for (int i1 = 0; i1 < tmpabcde.length; i1++) {            tmpabcde[i1] = digestInt[i1];        }        for (int j = 0; j <= 19; j++) {            int tmp = f4(tmpabcde[0], 5) +                f1(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] +                tmpData[j] + 0x5a827999;            tmpabcde[4] = tmpabcde[3];            tmpabcde[3] = tmpabcde[2];            tmpabcde[2] = f4(tmpabcde[1], 30);            tmpabcde[1] = tmpabcde[0];            tmpabcde[0] = tmp;        }        for (int k = 20; k <= 39; k++) {            int tmp = f4(tmpabcde[0], 5) +                f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] +                tmpData[k] + 0x6ed9eba1;            tmpabcde[4] = tmpabcde[3];            tmpabcde[3] = tmpabcde[2];            tmpabcde[2] = f4(tmpabcde[1], 30);            tmpabcde[1] = tmpabcde[0];            tmpabcde[0] = tmp;        }        for (int l = 40; l <= 59; l++) {            int tmp = f4(tmpabcde[0], 5) +                f3(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] +                tmpData[l] + 0x8f1bbcdc;            tmpabcde[4] = tmpabcde[3];            tmpabcde[3] = tmpabcde[2];            tmpabcde[2] = f4(tmpabcde[1], 30);            tmpabcde[1] = tmpabcde[0];            tmpabcde[0] = tmp;        }        for (int m = 60; m <= 79; m++) {            int tmp = f4(tmpabcde[0], 5) +                f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4] +                tmpData[m] + 0xca62c1d6;            tmpabcde[4] = tmpabcde[3];            tmpabcde[3] = tmpabcde[2];            tmpabcde[2] = f4(tmpabcde[1], 30);            tmpabcde[1] = tmpabcde[0];            tmpabcde[0] = tmp;        }        for (int i2 = 0; i2 < tmpabcde.length; i2++) {            digestInt[i2] = digestInt[i2] + tmpabcde[i2];        }        for (int n = 0; n < tmpData.length; n++) {            tmpData[n] = 0;        }    }    // 4字节数组转换为整数    private int byteArrayToInt(byte[] bytedata, int i) {        return ((bytedata[i] & 0xff) << 24) | ((bytedata[i + 1] & 0xff) << 16) |        ((bytedata[i + 2] & 0xff) << 8) | (bytedata[i + 3] & 0xff);    }    // 整数转换为4字节数组    private void intToByteArray(int intValue, byte[] byteData, int i) {        byteData[i] = (byte) (intValue >>> 24);        byteData[i + 1] = (byte) (intValue >>> 16);        byteData[i + 2] = (byte) (intValue >>> 8);        byteData[i + 3] = (byte) intValue;    }        // 计算sha-1摘要，返回相应的字节数组    public byte[] getDigestOfBytes(byte[] byteData) {        process_input_bytes(byteData);        byte[] digest = new byte[20];        for (int i = 0; i < digestInt.length; i++) {            intToByteArray(digestInt[i], digest, i * 4);        }        return digest;    }    // 计算sha-1摘要，返回相应的十六进制字符串    public String getDigestOfString(byte[] byteData) {        return byteArrayToHexString(getDigestOfBytes(byteData));    }public static byte[] getHmacSHA1( String data,String key){        byte[] ipadArray = new byte[64];        byte[] opadArray = new byte[64];        byte[] keyArray = new byte[64];        int ex = key.length();        SHA1 sha1= new SHA1();        if (key.length() > 64) {            byte[] temp = sha1.getDigestOfBytes(key.getBytes());            ex = temp.length;            for (int i = 0; i < ex; i++) {                keyArray[i] = temp[i];            }        }else{            byte[] temp = key.getBytes();            for (int i = 0; i < temp.length; i++) {                keyArray[i] = temp[i];            }        }        for (int i = ex; i < 64; i++) {            keyArray[i] = 0;        }        for (int j = 0; j < 64; j++) {            ipadArray[j] = (byte) (keyArray[j] ^ 0x36);            opadArray[j] = (byte) (keyArray[j] ^ 0x5C);        }        byte[] tempResult = sha1.getDigestOfBytes(join(ipadArray,data.getBytes()));                return sha1.getDigestOfBytes(join(opadArray,tempResult));    }          public static void main(String[] args) {        String data = "Hi There";        System.out.println(data); String key = "123"; System.out.println(key);        //String digest = new SHA1().getDigestOfString(data.getBytes());String digest = bytesToHexString(getHmacSHA1(data,key));        System.out.println(digest);  // 计算的加密结果为：0F7B5419BB8358632AFCA202C96E9249FB936D95    }}
与http://blog.csdn.net/yanzhibo/article/details/8469691页面的C++ HMAC_SHA1结果一致。