複製代碼代碼如下：
// Paul Tero，2001年7月
//http://www.tero.co.uk/des/
//
//邁克爾·海沃思（Michael Hayworth），2001年11月，邁克爾·海沃斯（Michael Hayworth
//http://www.netdealing.com
//
//提供“原樣”提供此軟件
//任何明示或暗示的保證，包括但不限於
//暗示對特定目的的適銷性和適合性的保證
//被否認。在任何情況下，作者或貢獻者均不承擔任何責任
//對於任何直接，間接，偶然，特殊，示例性或結果
//損壞（包括但不限於替代商品的採購
//或服務；損失使用，數據或利潤；或業務中斷）
//然而造成並以任何責任理論造成的理論，無論合同中，嚴格
//責任，或以任何方式產生的侵權行為（包括疏忽或其他）
//不使用該軟件，即使告知可能性
//這樣的傷害。
// des
//這是鍵，消息以及是加密還是解密
功能DES（鍵，消息，加密，模式，IV，填充）{
//宣布此本地會加快速度
var spfunction1 = new Array (0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000, 0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0x10004,0x404,0x10404040x10000000000,0x10000000000 x10000,0x101040x40x1010000,0x1010000,0000000,0000000,000,0000000,000,000,000,00000,00000,000,000,000,000,000,000,000,000,000,000,000000,000000,000000,000000,000000000 ,00000,00000,0000000000,0X10100000090000來10000,0x10400,0x1000004,0x400,0x4,0x1000404， 0x10404,0x10404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x404,0x104040x10400,0x4040x40x100 x1000400400,0x1000400,0x1000400,0x1000x100sx1044,0x10400 x1010004 ,040004,040004,04,04,04,040004,04,04,04）
var spfunction2 =新數組（-0x7fef7fe0，-0x7fff8000,0x8000,0x108020,0x100000,000,0x20，-0x7feffFe0，-0x7fff7fe0，-0x7fffffe0 0x20，-0x7fefffe0,0x108000， 0x100020，-0x7fff7fe0,0，-0x80000000,0x8000,0x108020 ，-0x7ff00000,0x100020，-0x7fffFe0,0x108000,0x80202020202020202020202020202010,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x80 feeffe。 0x7FFF7FE0，-0x7ff00000 ，-0x7fef8000,0x8000，-0x7ff00000，-0x7fff8000, 0x20，-0x7fef7fe7fe0,0x108020,0x20,0x8000，-0x80000000,000,0x8020，-0x7fef8000,0x100000，-0x7x7x7ffeFefeFefeffefefefeffefeffe 0,0x100020,0x108000,0， -0x7fff8000,0x8020，-0x80000000，-0x7fefffe0，-0x7fef7fe0fe0,0x108000）;
var spfunction3 = new Array (0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000, 0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0, 0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200);
var spfunction4 = new Array (0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000, 0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081, 0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080);
var spfunction5 = new Array (0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100, 0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000, 0x42080000,0x42080100,0x80100,0x4200000000,0x42080100,0x2080000,0x2080000,0x40080000000000000000000000000000000000,0x80100,0x80100,0x2000100,0x40000,0000,0000,00000,0000,00000 000,00000,00000,00000,00000,00000,000000,000000,000000 ,000000,000,000,000000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000倍
var spfunction6 = new Array (0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010, 0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000, 0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010);
var spfunction7 = new Array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000, 0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802, 0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002);
var spfunction8 = new Array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040, 0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000, 0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000);
//創建我們需要的16或48個子鑰匙
var鍵= des_createkeys（key）;
var m = 0，i，j，temp，temp2，right1，right2，左，右，循環；
var cbcleft，cbcleft2，cbcright，cbcright2
var endloop，loopinc;
var len = message.length;
var塊= 0;
//設置單個和三重DES的循環
var Iterations = keys.length == 32？ 3：9; //單人或三重DES
if（迭代== 3）{looping =加密？新數組（0，32，2）：新數組（30，-2，-2）;}
else {looping =加密？新數組（0，32，2，62，30，-2，64，96，2）：新數組（94，62，-2，32，64，64，2，2，30，-2，-2 ）;}
//填充消息取決於填充參數
if（padding == 2）消息 +=“”; //用空格加信消息
否則if（padding == 1）{temp = 8-（len％8）;消息 += string.fromcharcode（temp，temp，temp，temp，temp，temp，temp，temp，temp）; if（temp == 8）len+= 8;} // pkcs7填充
否則（！填充）消息 +=“/0/0/0/0/0/0/0/0/0/0”; //用null字節填充消息
//將結果存儲在這裡
結果=“”;
tempresult =“”;
如果（模式== 1）{// CBC模式
cbcleft =（iv.CharCodeat（M ++）<< 24）| （iv.Charcodeat（M ++）<< 16）| （iv.Charcodeat（M ++）<< 8）| iv.Charcodeat（M ++）;
cbcright =（iv.CharCodeat（M ++）<< 24）| （iv.Charcodeat（M ++）<< 16）| （iv.Charcodeat（M ++）<< 8）| iv.Charcodeat（M ++）;
M = 0;
}
//循環瀏覽消息的每一部分
而（m <len）{
left =（message.charcodeat（m ++）<< 24）| （Message.CharCodeat（M ++）<< 16）| （Message.CharCodeat（M ++）<< 8）| Message.CharCodeat（M ++）;
right =（message.charcodeat（m ++）<< 24）| （Message.CharCodeat（M ++）<< 16）| （Message.CharCodeat（M ++）<< 8）| Message.CharCodeat（M ++）;
//對於密碼塊鍊式模式，請帶有先前結果的消息
if（mode == 1）{if（gent）{left ^= cbcleft;右 ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft =左； cbcright =正確;}}
//首先，每64個，但必鬚根據IP置入消息的一部分
temp =（（（左>>> 4） ^右）＆0x0f0f0f0f;正確 ^= temp;左 ^=（temp << 4）;
temp =（（（左>>> 16） ^右）＆0x0000ffff;正確 ^= temp;左 ^=（temp << 16）;
temp =（（（右>>> 2） ^左）＆0x33333333;左 ^= temp;正確 ^=（temp << 2）;
temp =（（右>>> 8） ^左）＆0x00ff00ff;左 ^= temp;正確 ^=（temp << 8）;
temp =（（（左>>> 1） ^右）＆0x55555555;正確 ^= temp;左 ^=（temp << 1）;
左=（（左<< 1）|（左>>> 31））;
right =（（right << 1）|（右>>> 31））;
//對消息的每個部分進行1或3次執行此操作
for（j = 0; j <迭代; j+= 3）{
endloop = looping [j+1];
loopinc = looping [j+2];
//現在通過並執行加密或解密
for（i = looping [j]; i！= endloop; i+= loopinc）{//提高效率
right1 =右 ^鍵[i];
right2 =（（右>>> 4）|（右<< 28）） ^鍵[i+1];
//通過通過S選擇函數傳遞這些字節來實現結果
temp = left;
左=右;
right = temp ^（spfunction2 [（right1 >>> 24）＆0x3f] | spfunction4 [（right1 >>> 16）＆0x3f]
| spfunction6 [（right1 >>> 8）＆0x3f] | spfunction8 [right1＆0x3f]
| spfunction1 [（right2 >>> 24）＆0x3f] | spfunction3 [（right2 >>> 16）＆0x3f]
| spfunction5 [（right2 >>> 8）＆0x3f] | spfunction7 [right2＆0x3f]）;
}
temp = left;左=右;正確= temp; //左右反面
} //對於1或3迭代
//移動然後向右移動
left =（（（左>>> 1）|（左<< 31））;
right =（（右>>> 1）|（right << 31））;
//現在執行IP-1，這是朝相反方向的IP
temp =（（（左>>> 1） ^右）＆0x55555555;正確 ^= temp;左 ^=（temp << 1）;
temp =（（右>>> 8） ^左）＆0x00ff00ff;左 ^= temp;正確 ^=（temp << 8）;
temp =（（（右>>> 2） ^左）＆0x33333333;左 ^= temp;正確 ^=（temp << 2）;
temp =（（（左>>> 16） ^右）＆0x0000ffff;正確 ^= temp;左 ^=（temp << 16）;
temp =（（（左>>> 4） ^右）＆0x0f0f0f0f;正確 ^= temp;左 ^=（temp << 4）;
//對於密碼塊鍊式模式，請帶有先前結果的消息
if（mode == 1）{if（gentrypt）{cbcleft = left; cbcright = right;} else {left ^= cbcleft2;對 ^= cbcright2;}}}
tempresult += string.fromcharcode（（（（左>>> 24），（（（左>>> 16）＆0xff），（（左>>> 8）＆0xff），（左＆0xff），（右>>> 24），（（右>>> 16）＆0xff），（（右>>> 8）＆0xff），（右＆0xff））;
塊 += 8;
if（chunk == 512）{結果 += tempresult; tempresult =“”;塊= 0;}
} //每8個字符，或消息中的64位
//將結果作為數組返回
返回結果 + tempresult;
} // DES的結束
// des_createkeys
//這是輸入的64位鍵（即使僅使用56位）
//作為2個整數的數組，返回16 48位鍵
功能des_createkeys（key）{
//宣布此本地會加快速度
pc2bytes0 = new Array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204);
pc2bytes1 = new Array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101);
PC2BYTES2 =新陣列（0,0x8,0x800,0x808,0x100000000,0x1000008,0x1000800,0x1000800,0x1000808080x8,0x800,0x800,0x808080 x808,0x10000000000000000000000000 x100000800 x100080008000808008088088）;
pc2bytes3 = new Array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000);
PC2BYTES4 =新陣列（0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x41000,0x1010,0x410101010,0x1000,0x41000,0x41000,0x1010,0x4101010）;
pc2bytes5 = new Array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420);
pc2bytes6 = new Array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002);
PC2BYTES7 =新陣列（0,0x10000,0x800,0x10800,0x20000000,0x200100000000,0x20000800,0x20010800,0x20000,0x20000,0x3000000000000 x30000,0x20800,0x30800,0x20800,0x2000000 x2000000000,00000,00000,00000,00200200300300,00000,00000,00000 ,00000,00000,00000,00000,00000,00000,00000,00000,00000300,00200200200200300300,000300,000300,000009009300,000009300930093009300930093009300930000倍。
pc2bytes8 = new Array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002);
pc2bytes9 = new Array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408);
PC2BYTES10 =新陣列（0,0x20,0x20,0x100000,0x1000202020,0x100000,0x1000202020202020202020202020202020202020202000,0x102000,0x10202020202020202000,0x10202020202020202020202020202020202020202020202020202020202020202020202020）;
pc2bytes11 = new Array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200);
pc2bytes12 = new Array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010);
pc2bytes13 =新數組（0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x1,0x15,0x101,0x105,0x1,0x1,0x5,0x15,0x101,0x105）;
//多少次迭代（DES 1，三倍DES的3）
var迭代= key.length> 8？ 3：1; //由Paul 16/6/2007更改為9+字節鍵使用Triple DES
//存儲返回鍵
var鍵=新數組（32 *迭代）;
//現在定義需要完成的左移位
var shifts =新數組（0，0，1，1，1，1，1，1，1，0，1，1，1，1，1，1，1，1，1，0）;
//其他變量
var leftTemp，rightTemp，m = 0，n = 0，temp;
for（var j = 0; j <迭代; j ++）{// 1或3迭代
left =（key.charcodeat（m ++）<< 24）| （key.charcodeat（m ++）<< 16）| （key.charcodeat（m ++）<< 8）| key.charcodeat（m ++）;
right =（key.charcodeat（m ++）<< 24）| （key.charcodeat（m ++）<< 16）| （key.charcodeat（m ++）<< 8）| key.charcodeat（m ++）;
temp =（（（左>>> 4） ^右）＆0x0f0f0f0f;正確 ^= temp;左 ^=（temp << 4）;
temp =（（右>>> -16） ^左）＆0x0000ffff;左 ^= temp;正確 ^=（temp << -16）;
temp =（（（左>>> 2） ^右）＆0x33333333;正確 ^= temp;左 ^=（temp << 2）;
temp =（（右>>> -16） ^左）＆0x0000ffff;左 ^= temp;正確 ^=（temp << -16）;
temp =（（（左>>> 1） ^右）＆0x55555555;正確 ^= temp;左 ^=（temp << 1）;
temp =（（右>>> 8） ^左）＆0x00ff00ff;左 ^= temp;正確 ^=（temp << 8）;
temp =（（（左>>> 1） ^右）＆0x55555555;正確 ^= temp;左 ^=（temp << 1）;
//右側需要移動並獲得左側的最後四個位
temp =（左<< 8）| （（右>>> 20）＆0x000000f0）;
//左邊需要倒置
左=（右<< 24）| （（右<< 8）＆0xff0000）| （（右>>> 8）＆0xff00）| （（右>>> 24）＆0xf0）;
正確= temp;
//現在通過並在左鍵和右鍵執行這些班次
for（var i = 0; i <shifts.length; i ++）{
//將鑰匙向左移動一個或兩個位
if（shifts [i]）{left =（left << 2）| （左>>> 26）;正確=（對<< 2）| （右>>> 26）;}
else {left =（left << 1）| （左>>> 27）;正確=（對<< 1）| （右>>> 27）;}
左= -0xf;正確＆= -0xF;
//現在應用PC-2，以使E加密或解密時E更容易
//此轉換看起來像PC-2，除了每個字節的最後6位
//而不是連續48位，線路的順序將根據
//如何應用S選擇功能：S2，S4，S6，S8，S1，S3，S5，S7
leftTemp = pc2bytes0 [左>>> 28] | pc2bytes1 [（左>>> 24）＆0xf]
| pc2bytes2 [（左>>> 20）＆0xf] | pc2bytes3 [（左>>> 16）＆0xf]
| pc2bytes4 [（左>>> 12）＆0xf] | pc2bytes5 [（左>>> 8）＆0xf]
| pc2bytes6 [（左>>> 4）＆0xf];
rightTemp = pc2bytes7 [right >>> 28] | pc2bytes8 [（右>>> 24）＆0xf]
| pc2bytes9 [（右>>> 20）＆0xf] | pc2bytes10 [（右>>> 16）＆0xf]
| pc2bytes11 [（右>>> 12）＆0xf] | pc2bytes12 [（右>>> 8）＆0xf]
| pc2bytes13 [（右>>> 4）＆0xf];
temp =（（rightTemp >>> 16） ^ leftTemp）＆0x0000ffff;
鍵[n ++] = leftTemp ^ temp;鍵[n ++] = rightTemp ^（temp << 16）;
}
} //對於每個迭代
//返回我們創建的密鑰
返回鍵；
} // des_createkeys的結束
////////////////////////////// 測試 /////////////////// ////////////////////
功能stringToHex（s）{
var r =“ 0x”;
var hexes = new Array（“ 0”，“ 1”，“ 2”，“ 3”，“ 4”，“ 5”，“ 6”，“ 7”，“ 8”，“ 9”，“ A”， “ A”，“”，“ “ b”，“ c”，“ d”，“ e”，“ f”）;
for（var i = 0; i <s.length; i ++）{r += hexes [s.charcodeat（i）>> 4] +hexes [s.charcodeat（i）＆0xf];}
返回r;
}
功能hextostring（h）{
var r =“”;
for（var i =（h.substr（0，2）==“ 0x”）？2：0; i <h.length; i += 2）{r += string.fromcharcode（parseint（h.substr（ i）） ，2），16））;}
返回r;
}
var key =“這是24個字節鍵！”;
var messages =“這是測試消息”；
var ciphertext = des（鍵，消息，1，0）;
document.writeln（“ des test：” + StringToHex（ciphertext））;