Java和JS MD5加密-附盐值加密demo

时间：2022-04-25 16:26:57

JAVA和JS的MD5加密

经过测试：字母和数据好使，中文不好使。

源码如下：

**

 * 类MD5Util.java的实现描述：
 *
 */
public class MD5Util {

    // 获得MD5摘要算法的 MessageDigest 对象
    private static MessageDigest _mdInst = null;
    private static char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
    private static MessageDigest getMdInst() {
        if (_mdInst == null) {
            try {
                _mdInst = MessageDigest.getInstance("MD5");
            } catch (NoSuchAlgorithmException e) {
                e.printStackTrace();
            }
        }
        return _mdInst;
    }

    private MD5Util() {
    }

    /**
     * Returns a MessageDigest for the given <code>algorithm</code>.
     *
     * @return An MD5 digest instance.
     * @throws RuntimeException when a {@link NoSuchAlgorithmException} is caught
     */

    static MessageDigest getDigest() {
        try {
            return MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
     *
     * @param data Data to digest
     * @return MD5 digest
     */
    public static byte[] md5(byte[] data) {
        return getDigest().digest(data);
    }

    /**
     * Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
     *
     * @param data Data to digest
     * @return MD5 digest
     */
    public static byte[] md5(String data) {
        return md5(data.getBytes());
    }

    /**
     * Calculates the MD5 digest and returns the value as a 32 character hex string.
     *
     * @param data Data to digest
     * @return MD5 digest as a hex string
     */
    /*public static String md5Hex(byte[] data) {
        return HexUtil.toHexString(md5(data));
    }*/

    /**
     * Calculates the MD5 digest and returns the value as a 32 character hex string.
     *
     * @param data Data to digest
     * @return MD5 digest as a hex string
     */
    /*public static String md5Hex(String data) {
        return HexUtil.toHexString(md5(data));
    }*/

    /**
     * 对密码字符串进行MD5加密
     *
     * @param pass
     * @return
     */
    public static String encoding(String pass) {
        if (pass == null) {
            return "";
        } else {
            StringBuffer buf = null;
            MessageDigest md5 = null;
            try {
                // 获取md5摘要
                md5 = MessageDigest.getInstance("MD5");
                // 指定utf-8编码
                md5.update(pass.getBytes("utf-8"));
                byte[] b = md5.digest();
                int i;
                buf = new StringBuffer("");
                for (int offset = 0; offset < b.length; offset++) {
                    i = b[offset];
                    if (i < 0) {
                        i += 256;
                    }
                    if (i < 16) {
                        buf.append("0");
                    }
                    // 产生16进制保存
                    buf.append(Integer.toHexString(i));
                }
            } catch (NoSuchAlgorithmException e) {
                e.printStackTrace();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            return buf.toString();
        }
    }

    public final static String encode(String s) {
        try {
            byte[] btInput = s.getBytes();
            // 使用指定的字节更新摘要
            getMdInst().update(btInput);
            // 获得密文
            byte[] md = getMdInst().digest();
            // 把密文转换成十六进制的字符串形式
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

md5.js


/*

 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message

 * Digest Algorithm, as defined in RFC 1321.

 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.

 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet

 * Distributed under the BSD License

 * See http://pajhome.org.uk/crypt/md5 for more info.

 */

/*

 * Configurable variables. You may need to tweak these to be compatible with

 * the server-side, but the defaults work in most cases.

 */

var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */

var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */

var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*

 * These are the functions you'll usually want to call

 * They take string arguments and return either hex or base-64 encoded strings

 */

function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}

function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}

function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}

function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }

function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }

function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*

 * Perform a simple self-test to see if the VM is working

 */

function md5_vm_test()

{

  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";

}

/*

 * Calculate the MD5 of an array of little-endian words, and a bit length

 */

function core_md5(x, len)

{

  /* append padding */

  x[len >> 5] |= 0x80 << ((len) % 32);

  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;

  var b = -271733879;

  var c = -1732584194;

  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)

  {

    var olda = a;

    var oldb = b;

    var oldc = c;

    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);

    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);

    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);

    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);

    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);

    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);

    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);

    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);

    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);

    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);

    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);

    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);

    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);

    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);

    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);

    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);

    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);

    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);

    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);

    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);

    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);

    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);

    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);

    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);

    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);

    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);

    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);

    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);

    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);

    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);

    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);

    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);

    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);

    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);

    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);

    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);

    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);

    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);

    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);

    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);

    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);

    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);

    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);

    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);

    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);

    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);

    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);

    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);

    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);

    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);

    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);

    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);

    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);

    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);

    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);

    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);

    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);

    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);

    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);

    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);

    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);

    b = safe_add(b, oldb);

    c = safe_add(c, oldc);

    d = safe_add(d, oldd);

  }

  return Array(a, b, c, d);

}

/*

 * These functions implement the four basic operations the algorithm uses.

 */

function md5_cmn(q, a, b, x, s, t)

{

  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);

}

function md5_ff(a, b, c, d, x, s, t)

{

  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);

}

function md5_gg(a, b, c, d, x, s, t)

{

  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);

}

function md5_hh(a, b, c, d, x, s, t)

{

  return md5_cmn(b ^ c ^ d, a, b, x, s, t);

}

function md5_ii(a, b, c, d, x, s, t)

{

  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);

}

/*

 * Calculate the HMAC-MD5, of a key and some data

 */

function core_hmac_md5(key, data)

{

  var bkey = str2binl(key);

  if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);

  for(var i = 0; i < 16; i++)

  {

    ipad[i] = bkey[i] ^ 0x36363636;

    opad[i] = bkey[i] ^ 0x5C5C5C5C;

  }

  var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);

  return core_md5(opad.concat(hash), 512 + 128);

}

/*

 * Add integers, wrapping at 2^32. This uses 16-bit operations internally

 * to work around bugs in some JS interpreters.

 */

function safe_add(x, y)

{

  var lsw = (x & 0xFFFF) + (y & 0xFFFF);

  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);

  return (msw << 16) | (lsw & 0xFFFF);

}

/*

 * Bitwise rotate a 32-bit number to the left.

 */

function bit_rol(num, cnt)

{

  return (num << cnt) | (num >>> (32 - cnt));

}

/*

 * Convert a string to an array of little-endian words

 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.

 */

function str2binl(str)

{

  var bin = Array();

  var mask = (1 << chrsz) - 1;

  for(var i = 0; i < str.length * chrsz; i += chrsz)

    bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);

  return bin;

}

/*

 * Convert an array of little-endian words to a string

 */

function binl2str(bin)

{

  var str = "";

  var mask = (1 << chrsz) - 1;

  for(var i = 0; i < bin.length * 32; i += chrsz)

    str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);

  return str;

}

/*

 * Convert an array of little-endian words to a hex string.

 */

function binl2hex(binarray)

{

  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";

  var str = "";

  for(var i = 0; i < binarray.length * 4; i++)

  {

    str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +

           hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);

  }

  return str;

}

/*

 * Convert an array of little-endian words to a base-64 string

 */

function binl2b64(binarray)

{

  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

  var str = "";

  for(var i = 0; i < binarray.length * 4; i += 3)

  {

    var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)

                | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )

                |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);

    for(var j = 0; j < 4; j++)

    {

      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;

      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);

    }

  }

  return str;

}
 
测试DEMO类(工具类加密后转成小写)：

public class Test {
public static void main(String[] args) throws Exception {
    String source = "123AB";
    String salt = "asdklsakjfdlsadjfl";
    System.out.printf("source is %s,result is %s",salt+source,MD5Util.encode(salt+source).toLowerCase());
}
}
运行结果：

source is asdklsakjfdlsadjfl123AB,result is d5976dad58ad32000e3867f0601e236c

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