本文实例讲述了Java实现与JS相同的Des加解密算法。分享给大家供大家参考，具体如下：
这里演示java与js实现相同的des加解密算法，不多说，不废话，直接上代码
一、java实现
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package com.lyz.base.des;import java.util.ArrayList;import java.util.List;/** * DES加密/解密 * * @Copyright Copyright (c) 2015 * @author liuyazhuang * @see DESCore */public class Des { public Des() { } public static void main(String[] args) { Des desObj = new Des(); String key1 = "1"; String key2 = "2"; String key3 = "3"; String data = "jb51.net"; String str = desObj.strEnc(data, key1, key2, key3); System.out.println("服务器之家测试结果："); System.out.println(str); String dec = desObj.strDec(str, key1, key2, key3); System.out.println(dec); } /** * DES加密/解密 * * @Copyright Copyright (c) 2015 * @author liuyazhuang * @see DESCore */ /* * encrypt the string to string made up of hex return the encrypted string */ public String strEnc(String data, String firstKey, String secondKey, String thirdKey) { int leng = data.length(); String encData = ""; List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null; int firstLength = 0, secondLength = 0, thirdLength = 0; if (firstKey != null && firstKey != "") { firstKeyBt = getKeyBytes(firstKey); firstLength = firstKeyBt.size(); } if (secondKey != null && secondKey != "") { secondKeyBt = getKeyBytes(secondKey); secondLength = secondKeyBt.size(); } if (thirdKey != null && thirdKey != "") { thirdKeyBt = getKeyBytes(thirdKey); thirdLength = thirdKeyBt.size(); } if (leng > 0) { if (leng < 4) { int[] bt = strToBt(data); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x = 0; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } encByte = tempBt; } } } encData = bt64ToHex(encByte); } else { int iterator = (leng / 4); int remainder = leng % 4; int i = 0; for (i = 0; i < iterator; i++) { String tempData = data.substring(i * 4 + 0, i * 4 + 4); int[] tempByte = strToBt(tempData); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt .get(x)); } encByte = tempBt; } } } encData += bt64ToHex(encByte); } if (remainder > 0) { String remainderData = data.substring(iterator * 4 + 0, leng); int[] tempByte = strToBt(remainderData); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt .get(x)); } encByte = tempBt; } } } encData += bt64ToHex(encByte); } } } return encData; } /* * decrypt the encrypted string to the original string * return the original string */ public String strDec(String data, String firstKey, String secondKey, String thirdKey) { int leng = data.length(); String decStr = ""; List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null; int firstLength = 0, secondLength = 0, thirdLength = 0; if (firstKey != null && firstKey != "") { firstKeyBt = getKeyBytes(firstKey); firstLength = firstKeyBt.size(); } if (secondKey != null && secondKey != "") { secondKeyBt = getKeyBytes(secondKey); secondLength = secondKeyBt.size(); } if (thirdKey != null && thirdKey != "") { thirdKeyBt = getKeyBytes(thirdKey); thirdLength = thirdKeyBt.size(); } int iterator = leng / 16; int i = 0; for (i = 0; i < iterator; i++) { String tempData = data.substring(i * 16 + 0, i * 16 + 16); String strByte = hexToBt64(tempData); int[] intByte = new int[64]; int j = 0; for (j = 0; j < 64; j++) { intByte[j] = Integer.parseInt(strByte.substring(j, j + 1)); } int[] decByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = intByte; for (x = thirdLength - 1; x >= 0; x--) { tempBt = dec(tempBt, (int[]) thirdKeyBt.get(x)); } for (y = secondLength - 1; y >= 0; y--) { tempBt = dec(tempBt, (int[]) secondKeyBt.get(y)); } for (z = firstLength - 1; z >= 0; z--) { tempBt = dec(tempBt, (int[]) firstKeyBt.get(z)); } decByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y, z; tempBt = intByte; for (x = secondLength - 1; x >= 0; x--) { tempBt = dec(tempBt, (int[]) secondKeyBt.get(x)); } for (y = firstLength - 1; y >= 0; y--) { tempBt = dec(tempBt, (int[]) firstKeyBt.get(y)); } decByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x, y, z; tempBt = intByte; for (x = firstLength - 1; x >= 0; x--) { tempBt = dec(tempBt, (int[]) firstKeyBt.get(x)); } decByte = tempBt; } } } decStr += byteToString(decByte); } return decStr; } /* * chang the string into the bit array * * return bit array(it's length % 64 = 0) */ public List getKeyBytes(String key) { List keyBytes = new ArrayList(); int leng = key.length(); int iterator = (leng / 4); int remainder = leng % 4; int i = 0; for (i = 0; i < iterator; i++) { keyBytes.add(i, strToBt(key.substring(i * 4 + 0, i * 4 + 4))); } if (remainder > 0) { // keyBytes[i] = strToBt(key.substring(i*4+0,leng)); keyBytes.add(i, strToBt(key.substring(i * 4 + 0, leng))); } return keyBytes; } /* * chang the string(it's length <= 4) into the bit array * * return bit array(it's length = 64) */ public int[] strToBt(String str) { int leng = str.length(); int[] bt = new int[64]; if (leng < 4) { int i = 0, j = 0, p = 0, q = 0; for (i = 0; i < leng; i++) { int k = str.charAt(i); for (j = 0; j < 16; j++) { int pow = 1, m = 0; for (m = 15; m > j; m--) { pow *= 2; } // bt.set(16*i+j,""+(k/pow)%2)); bt[16 * i + j] = (k / pow) % 2; } } for (p = leng; p < 4; p++) { int k = 0; for (q = 0; q < 16; q++) { int pow = 1, m = 0; for (m = 15; m > q; m--) { pow *= 2; } // bt[16*p+q]=parseInt(k/pow)%2; // bt.add(16*p+q,""+((k/pow)%2)); bt[16 * p + q] = (k / pow) % 2; } } } else { for (int i = 0; i < 4; i++) { int k = str.charAt(i); for (int j = 0; j < 16; j++) { int pow = 1; for (int m = 15; m > j; m--) { pow *= 2; } // bt[16*i+j]=parseInt(k/pow)%2; // bt.add(16*i+j,""+((k/pow)%2)); bt[16 * i + j] = (k / pow) % 2; } } } return bt; } /* * chang the bit(it's length = 4) into the hex * * return hex */ public String bt4ToHex(String binary) { String hex = ""; if (binary.equalsIgnoreCase("0000")) { hex = "0"; } else if (binary.equalsIgnoreCase("0001")) { hex = "1"; } else if (binary.equalsIgnoreCase("0010")) { hex = "2"; } else if (binary.equalsIgnoreCase("0011")) { hex = "3"; } else if (binary.equalsIgnoreCase("0100")) { hex = "4"; } else if (binary.equalsIgnoreCase("0101")) { hex = "5"; } else if (binary.equalsIgnoreCase("0110")) { hex = "6"; } else if (binary.equalsIgnoreCase("0111")) { hex = "7"; } else if (binary.equalsIgnoreCase("1000")) { hex = "8"; } else if (binary.equalsIgnoreCase("1001")) { hex = "9"; } else if (binary.equalsIgnoreCase("1010")) { hex = "A"; } else if (binary.equalsIgnoreCase("1011")) { hex = "B"; } else if (binary.equalsIgnoreCase("1100")) { hex = "C"; } else if (binary.equalsIgnoreCase("1101")) { hex = "D"; } else if (binary.equalsIgnoreCase("1110")) { hex = "E"; } else if (binary.equalsIgnoreCase("1111")) { hex = "F"; } return hex; } /* * chang the hex into the bit(it's length = 4) * * return the bit(it's length = 4) */ public String hexToBt4(String hex) { String binary = ""; if (hex.equalsIgnoreCase("0")) { binary = "0000"; } else if (hex.equalsIgnoreCase("1")) { binary = "0001"; } if (hex.equalsIgnoreCase("2")) { binary = "0010"; } if (hex.equalsIgnoreCase("3")) { binary = "0011"; } if (hex.equalsIgnoreCase("4")) { binary = "0100"; } if (hex.equalsIgnoreCase("5")) { binary = "0101"; } if (hex.equalsIgnoreCase("6")) { binary = "0110"; } if (hex.equalsIgnoreCase("7")) { binary = "0111"; } if (hex.equalsIgnoreCase("8")) { binary = "1000"; } if (hex.equalsIgnoreCase("9")) { binary = "1001"; } if (hex.equalsIgnoreCase("A")) { binary = "1010"; } if (hex.equalsIgnoreCase("B")) { binary = "1011"; } if (hex.equalsIgnoreCase("C")) { binary = "1100"; } if (hex.equalsIgnoreCase("D")) { binary = "1101"; } if (hex.equalsIgnoreCase("E")) { binary = "1110"; } if (hex.equalsIgnoreCase("F")) { binary = "1111"; } return binary; } /* * chang the bit(it's length = 64) into the string * * return string */ public String byteToString(int[] byteData) { String str = ""; for (int i = 0; i < 4; i++) { int count = 0; for (int j = 0; j < 16; j++) { int pow = 1; for (int m = 15; m > j; m--) { pow *= 2; } count += byteData[16 * i + j] * pow; } if (count != 0) { str += "" + (char) (count); } } return str; } public String bt64ToHex(int[] byteData) { String hex = ""; for (int i = 0; i < 16; i++) { String bt = ""; for (int j = 0; j < 4; j++) { bt += byteData[i * 4 + j]; } hex += bt4ToHex(bt); } return hex; } public String hexToBt64(String hex) { String binary = ""; for (int i = 0; i < 16; i++) { binary += hexToBt4(hex.substring(i, i + 1)); } return binary; } /* * the 64 bit des core arithmetic */ public int[] enc(int[] dataByte, int[] keyByte) { int[][] keys = generateKeys(keyByte); int[] ipByte = initPermute(dataByte); int[] ipLeft = new int[32]; int[] ipRight = new int[32]; int[] tempLeft = new int[32]; int i = 0, j = 0, k = 0, m = 0, n = 0; for (k = 0; k < 32; k++) { ipLeft[k] = ipByte[k]; ipRight[k] = ipByte[32 + k]; } for (i = 0; i < 16; i++) { for (j = 0; j < 32; j++) { tempLeft[j] = ipLeft[j]; ipLeft[j] = ipRight[j]; } int[] key = new int[48]; for (m = 0; m < 48; m++) { key[m] = keys[i][m]; } int[] tempRight = xor(pPermute(sBoxPermute(xor( expandPermute(ipRight), key))), tempLeft); for (n = 0; n < 32; n++) { ipRight[n] = tempRight[n]; } } int[] finalData = new int[64]; for (i = 0; i < 32; i++) { finalData[i] = ipRight[i]; finalData[32 + i] = ipLeft[i]; } return finallyPermute(finalData); } public int[] dec(int[] dataByte, int[] keyByte) { int[][] keys = generateKeys(keyByte); int[] ipByte = initPermute(dataByte); int[] ipLeft = new int[32]; int[] ipRight = new int[32]; int[] tempLeft = new int[32]; int i = 0, j = 0, k = 0, m = 0, n = 0; for (k = 0; k < 32; k++) { ipLeft[k] = ipByte[k]; ipRight[k] = ipByte[32 + k]; } for (i = 15; i >= 0; i--) { for (j = 0; j < 32; j++) { tempLeft[j] = ipLeft[j]; ipLeft[j] = ipRight[j]; } int[] key = new int[48]; for (m = 0; m < 48; m++) { key[m] = keys[i][m]; } int[] tempRight = xor(pPermute(sBoxPermute(xor( expandPermute(ipRight), key))), tempLeft); for (n = 0; n < 32; n++) { ipRight[n] = tempRight[n]; } } int[] finalData = new int[64]; for (i = 0; i < 32; i++) { finalData[i] = ipRight[i]; finalData[32 + i] = ipLeft[i]; } return finallyPermute(finalData); } public int[] initPermute(int[] originalData) { int[] ipByte = new int[64]; int i = 0, m = 1, n = 0, j, k; for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) { for (j = 7, k = 0; j >= 0; j--, k++) { ipByte[i * 8 + k] = originalData[j * 8 + m]; ipByte[i * 8 + k + 32] = originalData[j * 8 + n]; } } return ipByte; } public int[] expandPermute(int[] rightData) { int[] epByte = new int[48]; int i, j; for (i = 0; i < 8; i++) { if (i == 0) { epByte[i * 6 + 0] = rightData[31]; } else { epByte[i * 6 + 0] = rightData[i * 4 - 1]; } epByte[i * 6 + 1] = rightData[i * 4 + 0]; epByte[i * 6 + 2] = rightData[i * 4 + 1]; epByte[i * 6 + 3] = rightData[i * 4 + 2]; epByte[i * 6 + 4] = rightData[i * 4 + 3]; if (i == 7) { epByte[i * 6 + 5] = rightData[0]; } else { epByte[i * 6 + 5] = rightData[i * 4 + 4]; } } return epByte; } public int[] xor(int[] byteOne, int[] byteTwo) { // var xorByte = new Array(byteOne.length); // for(int i = 0;i < byteOne.length; i ++){ // xorByte[i] = byteOne[i] ^ byteTwo[i]; // } // return xorByte; int[] xorByte = new int[byteOne.length]; for (int i = 0; i < byteOne.length; i++) { xorByte[i] = byteOne[i] ^ byteTwo[i]; } return xorByte; } public int[] sBoxPermute(int[] expandByte) { // var sBoxByte = new Array(32); int[] sBoxByte = new int[32]; String binary = ""; int[][] s1 = { { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7 }, { 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8 }, { 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0 }, { 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 } }; /* Table - s2 */ int[][] s2 = { { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10 }, { 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5 }, { 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15 }, { 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 } }; /* Table - s3 */ int[][] s3 = { { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8 }, { 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1 }, { 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7 }, { 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 } }; /* Table - s4 */ int[][] s4 = { { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15 }, { 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9 }, { 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4 }, { 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 } }; /* Table - s5 */ int[][] s5 = { { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9 }, { 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6 }, { 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14 }, { 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 } }; /* Table - s6 */ int[][] s6 = { { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11 }, { 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8 }, { 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6 }, { 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 } }; /* Table - s7 */ int[][] s7 = { { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1 }, { 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6 }, { 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2 }, { 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 } }; /* Table - s8 */ int[][] s8 = { { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7 }, { 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2 }, { 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8 }, { 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } }; for (int m = 0; m < 8; m++) { int i = 0, j = 0; i = expandByte[m * 6 + 0] * 2 + expandByte[m * 6 + 5]; j = expandByte[m * 6 + 1] * 2 * 2 * 2 + expandByte[m * 6 + 2] * 2 * 2 + expandByte[m * 6 + 3] * 2 + expandByte[m * 6 + 4]; switch (m) { case 0: binary = getBoxBinary(s1[i][j]); break; case 1: binary = getBoxBinary(s2[i][j]); break; case 2: binary = getBoxBinary(s3[i][j]); break; case 3: binary = getBoxBinary(s4[i][j]); break; case 4: binary = getBoxBinary(s5[i][j]); break; case 5: binary = getBoxBinary(s6[i][j]); break; case 6: binary = getBoxBinary(s7[i][j]); break; case 7: binary = getBoxBinary(s8[i][j]); break; } sBoxByte[m * 4 + 0] = Integer.parseInt(binary.substring(0, 1)); sBoxByte[m * 4 + 1] = Integer.parseInt(binary.substring(1, 2)); sBoxByte[m * 4 + 2] = Integer.parseInt(binary.substring(2, 3)); sBoxByte[m * 4 + 3] = Integer.parseInt(binary.substring(3, 4)); } return sBoxByte; } public int[] pPermute(int[] sBoxByte) { int[] pBoxPermute = new int[32]; pBoxPermute[0] = sBoxByte[15]; pBoxPermute[1] = sBoxByte[6]; pBoxPermute[2] = sBoxByte[19]; pBoxPermute[3] = sBoxByte[20]; pBoxPermute[4] = sBoxByte[28]; pBoxPermute[5] = sBoxByte[11]; pBoxPermute[6] = sBoxByte[27]; pBoxPermute[7] = sBoxByte[16]; pBoxPermute[8] = sBoxByte[0]; pBoxPermute[9] = sBoxByte[14]; pBoxPermute[10] = sBoxByte[22]; pBoxPermute[11] = sBoxByte[25]; pBoxPermute[12] = sBoxByte[4]; pBoxPermute[13] = sBoxByte[17]; pBoxPermute[14] = sBoxByte[30]; pBoxPermute[15] = sBoxByte[9]; pBoxPermute[16] = sBoxByte[1]; pBoxPermute[17] = sBoxByte[7]; pBoxPermute[18] = sBoxByte[23]; pBoxPermute[19] = sBoxByte[13]; pBoxPermute[20] = sBoxByte[31]; pBoxPermute[21] = sBoxByte[26]; pBoxPermute[22] = sBoxByte[2]; pBoxPermute[23] = sBoxByte[8]; pBoxPermute[24] = sBoxByte[18]; pBoxPermute[25] = sBoxByte[12]; pBoxPermute[26] = sBoxByte[29]; pBoxPermute[27] = sBoxByte[5]; pBoxPermute[28] = sBoxByte[21]; pBoxPermute[29] = sBoxByte[10]; pBoxPermute[30] = sBoxByte[3]; pBoxPermute[31] = sBoxByte[24]; return pBoxPermute; } public int[] finallyPermute(int[] endByte) { int[] fpByte = new int[64]; fpByte[0] = endByte[39]; fpByte[1] = endByte[7]; fpByte[2] = endByte[47]; fpByte[3] = endByte[15]; fpByte[4] = endByte[55]; fpByte[5] = endByte[23]; fpByte[6] = endByte[63]; fpByte[7] = endByte[31]; fpByte[8] = endByte[38]; fpByte[9] = endByte[6]; fpByte[10] = endByte[46]; fpByte[11] = endByte[14]; fpByte[12] = endByte[54]; fpByte[13] = endByte[22]; fpByte[14] = endByte[62]; fpByte[15] = endByte[30]; fpByte[16] = endByte[37]; fpByte[17] = endByte[5]; fpByte[18] = endByte[45]; fpByte[19] = endByte[13]; fpByte[20] = endByte[53]; fpByte[21] = endByte[21]; fpByte[22] = endByte[61]; fpByte[23] = endByte[29]; fpByte[24] = endByte[36]; fpByte[25] = endByte[4]; fpByte[26] = endByte[44]; fpByte[27] = endByte[12]; fpByte[28] = endByte[52]; fpByte[29] = endByte[20]; fpByte[30] = endByte[60]; fpByte[31] = endByte[28]; fpByte[32] = endByte[35]; fpByte[33] = endByte[3]; fpByte[34] = endByte[43]; fpByte[35] = endByte[11]; fpByte[36] = endByte[51]; fpByte[37] = endByte[19]; fpByte[38] = endByte[59]; fpByte[39] = endByte[27]; fpByte[40] = endByte[34]; fpByte[41] = endByte[2]; fpByte[42] = endByte[42]; fpByte[43] = endByte[10]; fpByte[44] = endByte[50]; fpByte[45] = endByte[18]; fpByte[46] = endByte[58]; fpByte[47] = endByte[26]; fpByte[48] = endByte[33]; fpByte[49] = endByte[1]; fpByte[50] = endByte[41]; fpByte[51] = endByte[9]; fpByte[52] = endByte[49]; fpByte[53] = endByte[17]; fpByte[54] = endByte[57]; fpByte[55] = endByte[25]; fpByte[56] = endByte[32]; fpByte[57] = endByte[0]; fpByte[58] = endByte[40]; fpByte[59] = endByte[8]; fpByte[60] = endByte[48]; fpByte[61] = endByte[16]; fpByte[62] = endByte[56]; fpByte[63] = endByte[24]; return fpByte; } public String getBoxBinary(int i) { String binary = ""; switch (i) { case 0: binary = "0000"; break; case 1: binary = "0001"; break; case 2: binary = "0010"; break; case 3: binary = "0011"; break; case 4: binary = "0100"; break; case 5: binary = "0101"; break; case 6: binary = "0110"; break; case 7: binary = "0111"; break; case 8: binary = "1000"; break; case 9: binary = "1001"; break; case 10: binary = "1010"; break; case 11: binary = "1011"; break; case 12: binary = "1100"; break; case 13: binary = "1101"; break; case 14: binary = "1110"; break; case 15: binary = "1111"; break; } return binary; } /* * generate 16 keys for xor * */ public int[][] generateKeys(int[] keyByte) { int[] key = new int[56]; int[][] keys = new int[16][48]; // keys[ 0] = new Array(); // keys[ 1] = new Array(); // keys[ 2] = new Array(); // keys[ 3] = new Array(); // keys[ 4] = new Array(); // keys[ 5] = new Array(); // keys[ 6] = new Array(); // keys[ 7] = new Array(); // keys[ 8] = new Array(); // keys[ 9] = new Array(); // keys[10] = new Array(); // keys[11] = new Array(); // keys[12] = new Array(); // keys[13] = new Array(); // keys[14] = new Array(); // keys[15] = new Array(); int[] loop = new int[] { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 }; for (int i = 0; i < 7; i++) { for (int j = 0, k = 7; j < 8; j++, k--) { key[i * 8 + j] = keyByte[8 * k + i]; } } int i = 0; for (i = 0; i < 16; i++) { int tempLeft = 0; int tempRight = 0; for (int j = 0; j < loop[i]; j++) { tempLeft = key[0]; tempRight = key[28]; for (int k = 0; k < 27; k++) { key[k] = key[k + 1]; key[28 + k] = key[29 + k]; } key[27] = tempLeft; key[55] = tempRight; } // var tempKey = new Array(48); int[] tempKey = new int[48]; tempKey[0] = key[13]; tempKey[1] = key[16]; tempKey[2] = key[10]; tempKey[3] = key[23]; tempKey[4] = key[0]; tempKey[5] = key[4]; tempKey[6] = key[2]; tempKey[7] = key[27]; tempKey[8] = key[14]; tempKey[9] = key[5]; tempKey[10] = key[20]; tempKey[11] = key[9]; tempKey[12] = key[22]; tempKey[13] = key[18]; tempKey[14] = key[11]; tempKey[15] = key[3]; tempKey[16] = key[25]; tempKey[17] = key[7]; tempKey[18] = key[15]; tempKey[19] = key[6]; tempKey[20] = key[26]; tempKey[21] = key[19]; tempKey[22] = key[12]; tempKey[23] = key[1]; tempKey[24] = key[40]; tempKey[25] = key[51]; tempKey[26] = key[30]; tempKey[27] = key[36]; tempKey[28] = key[46]; tempKey[29] = key[54]; tempKey[30] = key[29]; tempKey[31] = key[39]; tempKey[32] = key[50]; tempKey[33] = key[44]; tempKey[34] = key[32]; tempKey[35] = key[47]; tempKey[36] = key[43]; tempKey[37] = key[48]; tempKey[38] = key[38]; tempKey[39] = key[55]; tempKey[40] = key[33]; tempKey[41] = key[52]; tempKey[42] = key[45]; tempKey[43] = key[41]; tempKey[44] = key[49]; tempKey[45] = key[35]; tempKey[46] = key[28]; tempKey[47] = key[31]; int m; switch (i) { case 0: for (m = 0; m < 48; m++) { keys[0][m] = tempKey[m]; } break; case 1: for (m = 0; m < 48; m++) { keys[1][m] = tempKey[m]; } break; case 2: for (m = 0; m < 48; m++) { keys[2][m] = tempKey[m]; } break; case 3: for (m = 0; m < 48; m++) { keys[3][m] = tempKey[m]; } break; case 4: for (m = 0; m < 48; m++) { keys[4][m] = tempKey[m]; } break; case 5: for (m = 0; m < 48; m++) { keys[5][m] = tempKey[m]; } break; case 6: for (m = 0; m < 48; m++) { keys[6][m] = tempKey[m]; } break; case 7: for (m = 0; m < 48; m++) { keys[7][m] = tempKey[m]; } break; case 8: for (m = 0; m < 48; m++) { keys[8][m] = tempKey[m]; } break; case 9: for (m = 0; m < 48; m++) { keys[9][m] = tempKey[m]; } break; case 10: for (m = 0; m < 48; m++) { keys[10][m] = tempKey[m]; } break; case 11: for (m = 0; m < 48; m++) { keys[11][m] = tempKey[m]; } break; case 12: for (m = 0; m < 48; m++) { keys[12][m] = tempKey[m]; } break; case 13: for (m = 0; m < 48; m++) { keys[13][m] = tempKey[m]; } break; case 14: for (m = 0; m < 48; m++) { keys[14][m] = tempKey[m]; } break; case 15: for (m = 0; m < 48; m++) { keys[15][m] = tempKey[m]; } break; } } return keys; }} |
运行结果：
二、JS实现
1、des.js文件
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/*** DES加密/解密* @Copyright Copyright (c) 2015* @author liuyazhuang* @see DESCore*//** encrypt the string to string made up of hex* return the encrypted string*/function strEnc(data,firstKey,secondKey,thirdKey){ var leng = data.length; var encData = ""; var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength; if(firstKey != null && firstKey != ""){ firstKeyBt = getKeyBytes(firstKey); firstLength = firstKeyBt.length; } if(secondKey != null && secondKey != ""){ secondKeyBt = getKeyBytes(secondKey); secondLength = secondKeyBt.length; } if(thirdKey != null && thirdKey != ""){ thirdKeyBt = getKeyBytes(thirdKey); thirdLength = thirdKeyBt.length; } if(leng > 0){ if(leng < 4){ var bt = strToBt(data); var encByte ; if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){ var tempBt; var x,y,z; tempBt = bt; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } for(z = 0;z < thirdLength ;z ++){ tempBt = enc(tempBt,thirdKeyBt[z]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){ var tempBt; var x,y; tempBt = bt; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !=""){ var tempBt; var x = 0; tempBt = bt; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } encByte = tempBt; } } } encData = bt64ToHex(encByte); }else{ var iterator = parseInt(leng/4); var remainder = leng%4; var i=0; for(i = 0;i < iterator;i++){ var tempData = data.substring(i*4+0,i*4+4); var tempByte = strToBt(tempData); var encByte ; if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){ var tempBt; var x,y,z; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } for(z = 0;z < thirdLength ;z ++){ tempBt = enc(tempBt,thirdKeyBt[z]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){ var tempBt; var x,y; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !=""){ var tempBt; var x; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } encByte = tempBt; } } } encData += bt64ToHex(encByte); } if(remainder > 0){ var remainderData = data.substring(iterator*4+0,leng); var tempByte = strToBt(remainderData); var encByte ; if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){ var tempBt; var x,y,z; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } for(z = 0;z < thirdLength ;z ++){ tempBt = enc(tempBt,thirdKeyBt[z]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){ var tempBt; var x,y; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } for(y = 0;y < secondLength ;y ++){ tempBt = enc(tempBt,secondKeyBt[y]); } encByte = tempBt; }else{ if(firstKey != null && firstKey !=""){ var tempBt; var x; tempBt = tempByte; for(x = 0;x < firstLength ;x ++){ tempBt = enc(tempBt,firstKeyBt[x]); } encByte = tempBt; } } } encData += bt64ToHex(encByte); } } } return encData;}/** decrypt the encrypted string to the original string** return the original string*/function strDec(data,firstKey,secondKey,thirdKey){ var leng = data.length; var decStr = ""; var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength; if(firstKey != null && firstKey != ""){ firstKeyBt = getKeyBytes(firstKey); firstLength = firstKeyBt.length; } if(secondKey != null && secondKey != ""){ secondKeyBt = getKeyBytes(secondKey); secondLength = secondKeyBt.length; } if(thirdKey != null && thirdKey != ""){ thirdKeyBt = getKeyBytes(thirdKey); thirdLength = thirdKeyBt.length; } var iterator = parseInt(leng/16); var i=0; for(i = 0;i < iterator;i++){ var tempData = data.substring(i*16+0,i*16+16); var strByte = hexToBt64(tempData); var intByte = new Array(64); var j = 0; for(j = 0;j < 64; j++){ intByte[j] = parseInt(strByte.substring(j,j+1)); } var decByte; if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){ var tempBt; var x,y,z; tempBt = intByte; for(x = thirdLength - 1;x >= 0;x --){ tempBt = dec(tempBt,thirdKeyBt[x]); } for(y = secondLength - 1;y >= 0;y --){ tempBt = dec(tempBt,secondKeyBt[y]); } for(z = firstLength - 1;z >= 0 ;z --){ tempBt = dec(tempBt,firstKeyBt[z]); } decByte = tempBt; }else{ if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){ var tempBt; var x,y,z; tempBt = intByte; for(x = secondLength - 1;x >= 0 ;x --){ tempBt = dec(tempBt,secondKeyBt[x]); } for(y = firstLength - 1;y >= 0 ;y --){ tempBt = dec(tempBt,firstKeyBt[y]); } decByte = tempBt; }else{ if(firstKey != null && firstKey !=""){ var tempBt; var x,y,z; tempBt = intByte; for(x = firstLength - 1;x >= 0 ;x --){ tempBt = dec(tempBt,firstKeyBt[x]); } decByte = tempBt; } } } decStr += byteToString(decByte); } return decStr;}/** chang the string into the bit array** return bit array(it's length % 64 = 0)*/function getKeyBytes(key){ var keyBytes = new Array(); var leng = key.length; var iterator = parseInt(leng/4); var remainder = leng%4; var i = 0; for(i = 0;i < iterator; i ++){ keyBytes[i] = strToBt(key.substring(i*4+0,i*4+4)); } if(remainder > 0){ keyBytes[i] = strToBt(key.substring(i*4+0,leng)); } return keyBytes;}/** chang the string(it's length <= 4) into the bit array** return bit array(it's length = 64)*/function strToBt(str){ var leng = str.length; var bt = new Array(64); if(leng < 4){ var i=0,j=0,p=0,q=0; for(i = 0;i<leng;i++){ var k = str.charCodeAt(i); for(j=0;j<16;j++){ var pow=1,m=0; for(m=15;m>j;m--){ pow *= 2; } bt[16*i+j]=parseInt(k/pow)%2; } } for(p = leng;p<4;p++){ var k = 0; for(q=0;q<16;q++){ var pow=1,m=0; for(m=15;m>q;m--){ pow *= 2; } bt[16*p+q]=parseInt(k/pow)%2; } } }else{ for(i = 0;i<4;i++){ var k = str.charCodeAt(i); for(j=0;j<16;j++){ var pow=1; for(m=15;m>j;m--){ pow *= 2; } bt[16*i+j]=parseInt(k/pow)%2; } } } return bt;}/** chang the bit(it's length = 4) into the hex** return hex*/function bt4ToHex(binary) { var hex; switch (binary) { case "0000" : hex = "0"; break; case "0001" : hex = "1"; break; case "0010" : hex = "2"; break; case "0011" : hex = "3"; break; case "0100" : hex = "4"; break; case "0101" : hex = "5"; break; case "0110" : hex = "6"; break; case "0111" : hex = "7"; break; case "1000" : hex = "8"; break; case "1001" : hex = "9"; break; case "1010" : hex = "A"; break; case "1011" : hex = "B"; break; case "1100" : hex = "C"; break; case "1101" : hex = "D"; break; case "1110" : hex = "E"; break; case "1111" : hex = "F"; break; } return hex;}/** chang the hex into the bit(it's length = 4)** return the bit(it's length = 4)*/function hexToBt4(hex) { var binary; switch (hex) { case "0" : binary = "0000"; break; case "1" : binary = "0001"; break; case "2" : binary = "0010"; break; case "3" : binary = "0011"; break; case "4" : binary = "0100"; break; case "5" : binary = "0101"; break; case "6" : binary = "0110"; break; case "7" : binary = "0111"; break; case "8" : binary = "1000"; break; case "9" : binary = "1001"; break; case "A" : binary = "1010"; break; case "B" : binary = "1011"; break; case "C" : binary = "1100"; break; case "D" : binary = "1101"; break; case "E" : binary = "1110"; break; case "F" : binary = "1111"; break; } return binary;}/** chang the bit(it's length = 64) into the string** return string*/function byteToString(byteData){ var str=""; for(i = 0;i<4;i++){ var count=0; for(j=0;j<16;j++){ var pow=1; for(m=15;m>j;m--){ pow*=2; } count+=byteData[16*i+j]*pow; } if(count != 0){ str+=String.fromCharCode(count); } } return str;}function bt64ToHex(byteData){ var hex = ""; for(i = 0;i<16;i++){ var bt = ""; for(j=0;j<4;j++){ bt += byteData[i*4+j]; } hex+=bt4ToHex(bt); } return hex;}function hexToBt64(hex){ var binary = ""; for(i = 0;i<16;i++){ binary+=hexToBt4(hex.substring(i,i+1)); } return binary;}/** the 64 bit des core arithmetic*/function enc(dataByte,keyByte){ var keys = generateKeys(keyByte); var ipByte = initPermute(dataByte); var ipLeft = new Array(32); var ipRight = new Array(32); var tempLeft = new Array(32); var i = 0,j = 0,k = 0,m = 0, n = 0; for(k = 0;k < 32;k ++){ ipLeft[k] = ipByte[k]; ipRight[k] = ipByte[32+k]; } for(i = 0;i < 16;i ++){ for(j = 0;j < 32;j ++){ tempLeft[j] = ipLeft[j]; ipLeft[j] = ipRight[j]; } var key = new Array(48); for(m = 0;m < 48;m ++){ key[m] = keys[i][m]; } var tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft); for(n = 0;n < 32;n ++){ ipRight[n] = tempRight[n]; } } var finalData =new Array(64); for(i = 0;i < 32;i ++){ finalData[i] = ipRight[i]; finalData[32+i] = ipLeft[i]; } return finallyPermute(finalData);}function dec(dataByte,keyByte){ var keys = generateKeys(keyByte); var ipByte = initPermute(dataByte); var ipLeft = new Array(32); var ipRight = new Array(32); var tempLeft = new Array(32); var i = 0,j = 0,k = 0,m = 0, n = 0; for(k = 0;k < 32;k ++){ ipLeft[k] = ipByte[k]; ipRight[k] = ipByte[32+k]; } for(i = 15;i >= 0;i --){ for(j = 0;j < 32;j ++){ tempLeft[j] = ipLeft[j]; ipLeft[j] = ipRight[j]; } var key = new Array(48); for(m = 0;m < 48;m ++){ key[m] = keys[i][m]; } var tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft); for(n = 0;n < 32;n ++){ ipRight[n] = tempRight[n]; } } var finalData =new Array(64); for(i = 0;i < 32;i ++){ finalData[i] = ipRight[i]; finalData[32+i] = ipLeft[i]; } return finallyPermute(finalData);}function initPermute(originalData){ var ipByte = new Array(64); for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) { for (j = 7, k = 0; j >= 0; j--, k++) { ipByte[i * 8 + k] = originalData[j * 8 + m]; ipByte[i * 8 + k + 32] = originalData[j * 8 + n]; } } return ipByte;}function expandPermute(rightData){ var epByte = new Array(48); for (i = 0; i < 8; i++) { if (i == 0) { epByte[i * 6 + 0] = rightData[31]; } else { epByte[i * 6 + 0] = rightData[i * 4 - 1]; } epByte[i * 6 + 1] = rightData[i * 4 + 0]; epByte[i * 6 + 2] = rightData[i * 4 + 1]; epByte[i * 6 + 3] = rightData[i * 4 + 2]; epByte[i * 6 + 4] = rightData[i * 4 + 3]; if (i == 7) { epByte[i * 6 + 5] = rightData[0]; } else { epByte[i * 6 + 5] = rightData[i * 4 + 4]; } } return epByte;}function xor(byteOne,byteTwo){ var xorByte = new Array(byteOne.length); for(i = 0;i < byteOne.length; i ++){ xorByte[i] = byteOne[i] ^ byteTwo[i]; } return xorByte;}function sBoxPermute(expandByte){ var sBoxByte = new Array(32); var binary = ""; var s1 = [ [14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7], [0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8], [4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0], [15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 ]]; /* Table - s2 */ var s2 = [ [15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10], [3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5], [0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15], [13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 ]]; /* Table - s3 */ var s3= [ [10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8], [13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1], [13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7], [1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 ]]; /* Table - s4 */ var s4 = [ [7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15], [13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9], [10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4], [3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 ]]; /* Table - s5 */ var s5 = [ [2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9], [14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6], [4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14], [11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 ]]; /* Table - s6 */ var s6 = [ [12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11], [10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8], [9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6], [4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 ]]; /* Table - s7 */ var s7 = [ [4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1], [13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6], [1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2], [6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12]]; /* Table - s8 */ var s8 = [ [13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7], [1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2], [7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8], [2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11]]; for(m=0;m<8;m++){ var i=0,j=0; i = expandByte[m*6+0]*2+expandByte[m*6+5]; j = expandByte[m * 6 + 1] * 2 * 2 * 2 + expandByte[m * 6 + 2] * 2* 2 + expandByte[m * 6 + 3] * 2 + expandByte[m * 6 + 4]; switch (m) { case 0 : binary = getBoxBinary(s1[i][j]); break; case 1 : binary = getBoxBinary(s2[i][j]); break; case 2 : binary = getBoxBinary(s3[i][j]); break; case 3 : binary = getBoxBinary(s4[i][j]); break; case 4 : binary = getBoxBinary(s5[i][j]); break; case 5 : binary = getBoxBinary(s6[i][j]); break; case 6 : binary = getBoxBinary(s7[i][j]); break; case 7 : binary = getBoxBinary(s8[i][j]); break; } sBoxByte[m*4+0] = parseInt(binary.substring(0,1)); sBoxByte[m*4+1] = parseInt(binary.substring(1,2)); sBoxByte[m*4+2] = parseInt(binary.substring(2,3)); sBoxByte[m*4+3] = parseInt(binary.substring(3,4)); } return sBoxByte;}function pPermute(sBoxByte){ var pBoxPermute = new Array(32); pBoxPermute[ 0] = sBoxByte[15]; pBoxPermute[ 1] = sBoxByte[ 6]; pBoxPermute[ 2] = sBoxByte[19]; pBoxPermute[ 3] = sBoxByte[20]; pBoxPermute[ 4] = sBoxByte[28]; pBoxPermute[ 5] = sBoxByte[11]; pBoxPermute[ 6] = sBoxByte[27]; pBoxPermute[ 7] = sBoxByte[16]; pBoxPermute[ 8] = sBoxByte[ 0]; pBoxPermute[ 9] = sBoxByte[14]; pBoxPermute[10] = sBoxByte[22]; pBoxPermute[11] = sBoxByte[25]; pBoxPermute[12] = sBoxByte[ 4]; pBoxPermute[13] = sBoxByte[17]; pBoxPermute[14] = sBoxByte[30]; pBoxPermute[15] = sBoxByte[ 9]; pBoxPermute[16] = sBoxByte[ 1]; pBoxPermute[17] = sBoxByte[ 7]; pBoxPermute[18] = sBoxByte[23]; pBoxPermute[19] = sBoxByte[13]; pBoxPermute[20] = sBoxByte[31]; pBoxPermute[21] = sBoxByte[26]; pBoxPermute[22] = sBoxByte[ 2]; pBoxPermute[23] = sBoxByte[ 8]; pBoxPermute[24] = sBoxByte[18]; pBoxPermute[25] = sBoxByte[12]; pBoxPermute[26] = sBoxByte[29]; pBoxPermute[27] = sBoxByte[ 5]; pBoxPermute[28] = sBoxByte[21]; pBoxPermute[29] = sBoxByte[10]; pBoxPermute[30] = sBoxByte[ 3]; pBoxPermute[31] = sBoxByte[24]; return pBoxPermute;}function finallyPermute(endByte){ var fpByte = new Array(64); fpByte[ 0] = endByte[39]; fpByte[ 1] = endByte[ 7]; fpByte[ 2] = endByte[47]; fpByte[ 3] = endByte[15]; fpByte[ 4] = endByte[55]; fpByte[ 5] = endByte[23]; fpByte[ 6] = endByte[63]; fpByte[ 7] = endByte[31]; fpByte[ 8] = endByte[38]; fpByte[ 9] = endByte[ 6]; fpByte[10] = endByte[46]; fpByte[11] = endByte[14]; fpByte[12] = endByte[54]; fpByte[13] = endByte[22]; fpByte[14] = endByte[62]; fpByte[15] = endByte[30]; fpByte[16] = endByte[37]; fpByte[17] = endByte[ 5]; fpByte[18] = endByte[45]; fpByte[19] = endByte[13]; fpByte[20] = endByte[53]; fpByte[21] = endByte[21]; fpByte[22] = endByte[61]; fpByte[23] = endByte[29]; fpByte[24] = endByte[36]; fpByte[25] = endByte[ 4]; fpByte[26] = endByte[44]; fpByte[27] = endByte[12]; fpByte[28] = endByte[52]; fpByte[29] = endByte[20]; fpByte[30] = endByte[60]; fpByte[31] = endByte[28]; fpByte[32] = endByte[35]; fpByte[33] = endByte[ 3]; fpByte[34] = endByte[43]; fpByte[35] = endByte[11]; fpByte[36] = endByte[51]; fpByte[37] = endByte[19]; fpByte[38] = endByte[59]; fpByte[39] = endByte[27]; fpByte[40] = endByte[34]; fpByte[41] = endByte[ 2]; fpByte[42] = endByte[42]; fpByte[43] = endByte[10]; fpByte[44] = endByte[50]; fpByte[45] = endByte[18]; fpByte[46] = endByte[58]; fpByte[47] = endByte[26]; fpByte[48] = endByte[33]; fpByte[49] = endByte[ 1]; fpByte[50] = endByte[41]; fpByte[51] = endByte[ 9]; fpByte[52] = endByte[49]; fpByte[53] = endByte[17]; fpByte[54] = endByte[57]; fpByte[55] = endByte[25]; fpByte[56] = endByte[32]; fpByte[57] = endByte[ 0]; fpByte[58] = endByte[40]; fpByte[59] = endByte[ 8]; fpByte[60] = endByte[48]; fpByte[61] = endByte[16]; fpByte[62] = endByte[56]; fpByte[63] = endByte[24]; return fpByte;}function getBoxBinary(i) { var binary = ""; switch (i) { case 0 :binary = "0000";break; case 1 :binary = "0001";break; case 2 :binary = "0010";break; case 3 :binary = "0011";break; case 4 :binary = "0100";break; case 5 :binary = "0101";break; case 6 :binary = "0110";break; case 7 :binary = "0111";break; case 8 :binary = "1000";break; case 9 :binary = "1001";break; case 10 :binary = "1010";break; case 11 :binary = "1011";break; case 12 :binary = "1100";break; case 13 :binary = "1101";break; case 14 :binary = "1110";break; case 15 :binary = "1111";break; } return binary;}/** generate 16 keys for xor**/function generateKeys(keyByte){ var key = new Array(56); var keys = new Array(); keys[ 0] = new Array(); keys[ 1] = new Array(); keys[ 2] = new Array(); keys[ 3] = new Array(); keys[ 4] = new Array(); keys[ 5] = new Array(); keys[ 6] = new Array(); keys[ 7] = new Array(); keys[ 8] = new Array(); keys[ 9] = new Array(); keys[10] = new Array(); keys[11] = new Array(); keys[12] = new Array(); keys[13] = new Array(); keys[14] = new Array(); keys[15] = new Array(); var loop = [1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1]; for(i=0;i<7;i++){ for(j=0,k=7;j<8;j++,k--){ key[i*8+j]=keyByte[8*k+i]; } } var i = 0; for(i = 0;i < 16;i ++){ var tempLeft=0; var tempRight=0; for(j = 0; j < loop[i];j ++){ tempLeft = key[0]; tempRight = key[28]; for(k = 0;k < 27 ;k ++){ key[k] = key[k+1]; key[28+k] = key[29+k]; } key[27]=tempLeft; key[55]=tempRight; } var tempKey = new Array(48); tempKey[ 0] = key[13]; tempKey[ 1] = key[16]; tempKey[ 2] = key[10]; tempKey[ 3] = key[23]; tempKey[ 4] = key[ 0]; tempKey[ 5] = key[ 4]; tempKey[ 6] = key[ 2]; tempKey[ 7] = key[27]; tempKey[ 8] = key[14]; tempKey[ 9] = key[ 5]; tempKey[10] = key[20]; tempKey[11] = key[ 9]; tempKey[12] = key[22]; tempKey[13] = key[18]; tempKey[14] = key[11]; tempKey[15] = key[ 3]; tempKey[16] = key[25]; tempKey[17] = key[ 7]; tempKey[18] = key[15]; tempKey[19] = key[ 6]; tempKey[20] = key[26]; tempKey[21] = key[19]; tempKey[22] = key[12]; tempKey[23] = key[ 1]; tempKey[24] = key[40]; tempKey[25] = key[51]; tempKey[26] = key[30]; tempKey[27] = key[36]; tempKey[28] = key[46]; tempKey[29] = key[54]; tempKey[30] = key[29]; tempKey[31] = key[39]; tempKey[32] = key[50]; tempKey[33] = key[44]; tempKey[34] = key[32]; tempKey[35] = key[47]; tempKey[36] = key[43]; tempKey[37] = key[48]; tempKey[38] = key[38]; tempKey[39] = key[55]; tempKey[40] = key[33]; tempKey[41] = key[52]; tempKey[42] = key[45]; tempKey[43] = key[41]; tempKey[44] = key[49]; tempKey[45] = key[35]; tempKey[46] = key[28]; tempKey[47] = key[31]; switch(i){ case 0: for(m=0;m < 48 ;m++){ keys[ 0][m] = tempKey[m]; } break; case 1: for(m=0;m < 48 ;m++){ keys[ 1][m] = tempKey[m]; } break; case 2: for(m=0;m < 48 ;m++){ keys[ 2][m] = tempKey[m]; } break; case 3: for(m=0;m < 48 ;m++){ keys[ 3][m] = tempKey[m]; } break; case 4: for(m=0;m < 48 ;m++){ keys[ 4][m] = tempKey[m]; } break; case 5: for(m=0;m < 48 ;m++){ keys[ 5][m] = tempKey[m]; } break; case 6: for(m=0;m < 48 ;m++){ keys[ 6][m] = tempKey[m]; } break; case 7: for(m=0;m < 48 ;m++){ keys[ 7][m] = tempKey[m]; } break; case 8: for(m=0;m < 48 ;m++){ keys[ 8][m] = tempKey[m]; } break; case 9: for(m=0;m < 48 ;m++){ keys[ 9][m] = tempKey[m]; } break; case 10: for(m=0;m < 48 ;m++){ keys[10][m] = tempKey[m]; } break; case 11: for(m=0;m < 48 ;m++){ keys[11][m] = tempKey[m]; } break; case 12: for(m=0;m < 48 ;m++){ keys[12][m] = tempKey[m]; } break; case 13: for(m=0;m < 48 ;m++){ keys[13][m] = tempKey[m]; } break; case 14: for(m=0;m < 48 ;m++){ keys[14][m] = tempKey[m]; } break; case 15: for(m=0;m < 48 ;m++){ keys[15][m] = tempKey[m]; } break; } } return keys;} |
2、des.html文件
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<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <script type="text/javascript" src="des.js"></script> <script> function getResult(){ //待加密字符串 var str = document.getElementById("str").innerHTML; //第一个参数必须；第二个、第三个参数可选 var key1 = document.getElementById("key1").innerHTML; var key2 = document.getElementById("key2").innerHTML; var key3 = document.getElementById("key3").innerHTML; //加密方法 var enResult = strEnc(str,key1,key2,key3); //解密方法 var deResult = strDec(enResult,key1,key2,key3); //展示结果 document.getElementById("enStr").innerHTML = enResult; document.getElementById("dnStr").innerHTML = deResult; } </script></head><body><input type="button" value="获取加密结果与解密结果" onclick="getResult()" /> <table> <tr> <td align="left">字符串：</td> <td><span id="str">jb51.net</span></td> </tr> <tr> <td>加密key：</td> <td>key1=<span id="key1">1</span>;key2=<span id="key2">2</span>;key3=<span id="key3">3</span></td> </tr> <tr> <td align="left">加密结果：</td> <td align="left"><label id = "enStr"></label></td> </tr> <tr> <td align="left">解密结果： </td> <td align="left"><label id = "dnStr"></label></td> </tr> <table></body></html> |
运行结果：
希望本文所述对大家java程序设计有所帮助。
原文链接：http://blog.csdn.net/l1028386804/article/details/50196061
