var hex = "0123456789abcdef"; var msg; var psw; var key; function encrypt() { window.msg = document.getElementById("msgE").value; window.psw = document.getElementById("pswE").value; document.getElementById("msgE").value = ""; document.getElementById("pswE").value = ""; generateKey(); encryption(); var rls = document.getElementById("rls"); store(rls, window.msg); } function decrypt() { window.msg = document.getElementById("rls").value; window.psw = document.getElementById("pswD").value; document.getElementById("rls").value = ""; document.getElementById("pswD").value = ""; var rls = document.getElementById("msgE"); restore(rls, window.msg); window.msg = rls.value; generateKey(); encryption(); rls.value = window.msg; } function encryption() { var tmp = ""; for (var i = 0; i < window.msg.length; i++){ var d = window.msg.charCodeAt(i)^ window.psw.charCodeAt(i); var c = String.fromCharCode(d)[0]; tmp += c; } window.msg = tmp; } function generateKey() { var msgLth = window.msg.length; var pswLth = window.psw.length; var tmp = ""; window.key = ""; if (msgLth > pswLth) { var t = msgLth/pswLth; if (t > 0) for (var i = 1; i < t; i++) tmp += window.psw; t = msgLth%pswLth; for (var i = 0; i < t; i++) tmp += window.psw[i]; } else if (msgLth < pswLth) { for (var i = 0; i < msgLth; i++) tmp += window.psw[i]; } else { tmp = window.psw; } for (var i = 0; i < tmp.length; i++) { var d = tmp.charCodeAt(i)^128; var c = String.fromCharCode(d)[0]; window.key += c; } } function store(rls, txt) { rls.value = ""; for (var i = 0; i < txt.length; i++) { var n1 = Math.trunc(txt.charCodeAt(i)/16); var n2 = txt.charCodeAt(i)%16; rls.value += window.hex[n1]; rls.value += window.hex[n2]; } } function restore(rls, txt) { rls.value = ""; for (var i = 0; i < txt.length; i++) { var n1, n2; if (txt[i] >= '0' && txt[i] <= '9') n1 = txt.charCodeAt(i++)-48; else n1 = txt.charCodeAt(i++)-87; if (txt[i] >= '0' && txt[i] <= '9') n2 = txt.charCodeAt(i)-48; else n2 = txt.charCodeAt(i)-87; var c = String.fromCharCode(n1*16+n2)[0]; rls.value += c; } } function hexadecimal(txt) { var str = ""; for (var i = 0; i < txt.length; i++) { var n1 = Math.trunc(txt.charCodeAt(i)/16); var n2 = txt.charCodeAt(i)%16; str += window.hex[n1]; str += window.hex[n2]; } return str; }

encrypt mn