function Encrypt(str, pwd) { if (str == "") return ""; str = escape(str); if (!pwd || pwd == "") { var pwd = "1234"; } pwd = escape(pwd); if (pwd == null || pwd.length <= 0) { alert("Please enter a password with which to encrypt the message."); return null; } var prand = ""; for (var I = 0; I < pwd.length; I++) { prand += pwd.charCodeAt(I).toString(); } var sPos = Math.floor(prand.length / 5); var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos * 2) + prand.charAt(sPos * 3) + prand.charAt(sPos * 4) + prand.charAt(sPos * 5)); var incr = Math.ceil(pwd.length / 2); var modu = Math.pow(2, 31) - 1; if (mult < 2) { alert("Algorithm cannot find a suitable hash. Please choose a different password. /n Possible considerations are to choose a more complex or longer password."); return null; } var salt = Math.round(Math.random() * 1000000000) % 100000000; prand += salt; while (prand.length > 10) { prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString(); } prand = (mult * prand + incr) % modu; var enc_chr = ""; var enc_str = ""; for (var I = 0; I < str.length; I++) { enc_chr = parseInt(str.charCodeAt(I) ^ Math.floor((prand / modu) * 255)); if (enc_chr < 16) { enc_str += "0" + enc_chr.toString(16); } else enc_str += enc_chr.toString(16); prand = (mult * prand + incr) % modu; } salt = salt.toString(16); while (salt.length < 8) salt = "0" + salt; enc_str += salt; return enc_str; }
调用:Encrypt(name, " ")