JavaScript实现3DES加密：密钥长度与填充模式详解

var key = "this is a 24 byte key !!";
var message = "This is a test message";
var ciphertext = des (key, message, 1, 0);
document.writeln ("DES Test: " + stringToHex (ciphertext));

//how many iterations (1 for des, 3 for triple des)
var iterations = key.length > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys

if (padding == 2) message += " "; //pad the message with spaces
else if (padding == 1) {temp = 8-(len%8); message += String.fromCharCode (temp,temp,temp,temp,temp,temp,temp,temp); if (temp==8) len+=8;} //PKCS7 padding
else if (!padding) message += "\0\0\0\0\0\0\0\0"; //pad the message out with null bytes

var key ="b964b7c58e99b59"+"b964b7c5";
var message = "This is a test message";
var ciphertext = des(key, message, 1, 0,0,1);
document.writeln("<br/>DES3 Test: " + stringToHex (ciphertext));