LAMPIRAN A : LISTING PROGRAM

LAMPIRAN A : LISTING PROGRAM

File : chrome.manifest

content addonta chrome/

style chrome://global/content/customizeToolbar.xul chrome://addonta/content/button.css # Thunderbird compose Overlay chrome://messenger/content/messengercompose/ messengercompose.xul chrome://addonta/content/button.xul

File : install.rdf

<?xml version="1.0"?> <RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#"> <Description about="urn:mozilla:install-manifest" em:name="Massey Omura Cryptosystem"

em:description="Add On Keamanan EMail dengan Massey Omura Cryptosystem"

em:creator="Tengku Surya Pramana" em:id="masseyomura@gmail.com" em:version="2.0" em:iconURL="chrome://addonta/content/icon.png" > <em:targetApplication><!-- Thunderbird --> <Description em:id="{3550f703-e582-4d05-9a08-453d09bdfdc6}" em:minVersion="3.0" em:maxVersion="26.0" /> </em:targetApplication> <em:file> <Description about="urn:mozilla:extension:addonta" em:package="content/addonta/" /> </em:file> </Description> </RDF>

File : button.css

#button-enkripsi, #wrapper-button-enkripsi {list-style-image: url("chrome://addonta/content/buttonenkripsi.png");} .addonta {-moz-image-region: rect( 0px 24px 24px 0px);} .addonta:hover {-moz-image-region: rect(24px 24px 48px 0px);} [iconsize="small"] .addonta {-moz-image-region: rect( 0px 40px 16px 24px);} [iconsize="small"] .addonta:hover {-moz-image-region: rect(24px 40px 40px 24px);} #button-dekripsi, #wrapper-button-dekripsi {list-style-image: url("chrome://addonta/content/buttondekripsi.png");} .addonta {-moz-image-region: rect( 0px 24px 24px 0px);} .addonta:hover {-moz-image-region: rect(24px 24px 48px 0px);} [iconsize="small"] .addonta {-moz-image-region: rect( 0px 40px 16px 24px);} [iconsize="small"] .addonta:hover {-moz-image-region: rect(24px 40px 40px 24px);}

button.xul

/*Referensi utama perancangan dokumen XUL overlay diperoleh pada https://developer.mozilla.org/ */ <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet type="text/css" href="chrome://addonta/content/button.css"?> <!DOCTYPE overlay > <overlay id="addonta-overlay" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" > <script type="application/javascript" src="chrome://addonta/content/MasseyOmura.js"/> <!-- Thunderbird compose -->

<toolbarpalette id="MsgComposeToolbarPalette"> <toolbarbutton id="button-enkripsi"/> <toolbarbutton id="button-dekripsi"/> </toolbarpalette> <!-- button details --> <toolbarbutton id="button-enkripsi" label="Enkripsi"

tooltiptext="Digunakan untuk melakukan Enkripsi pada pesan" oncommand="Massey.enkripsi()"

class="toolbarbutton-1 chromeclass-toolbar-additional addonta" />

<toolbarbutton id="button-dekripsi" label="Dekripsi"

tooltiptext="Digunakan untuk melakukan Dekripsi pada pesan" oncommand="Massey.dekripsi()"

class="toolbarbutton-1 chromeclass-toolbar-additional addonta" />

</overlay>

File : MasseyOmura.js

var Massey={

getBodyText: function(){ //untuk mengambil teks dari body email var editor = window.gMsgCompose.editor;

var text = editor.outputToString('text/plain', editor.eNone) return text;

},

splittt: function(){

var karakter = this.getBodyText(); var kalimat = "";

var hasil = ""; var e = new Array;

e = karakter.split("\r\n"); var n = e.length;

if(karakter==""){

window.alert("Anda belum mengetikkan pesan !!!"); }

else{

for (var i=0; i<e.length; i++){ } if (e[n-1] == ""){ e.pop(); } var m = e.length; if(m == 1){ kalimat = e[0]; hasil = kalimat;

} else{

var a = m-1;

for ( var i=0; i < m-1; i++){ kalimat = e[i];

hasil = hasil+kalimat+"#"; }

hasil = hasil + e[a]; }

return hasil; }

},

getDecimalfromASCII: function(){//untuk mengambil nilai desimal dari kode ASCII

var karakter =this.splittt(); var simpan = new Array();

for(var i=0; i<karakter.length; i++){ var kar = karakter.charAt(i); var decimal = kar.charCodeAt(0); simpan[i]=decimal;

}

return simpan; // simpan semua array (m) },

getASCIIfromDecimal: function(masukan){ //untuk mengubah nilai desimal ke dalam kode ASCII

var karakter = masukan; var simpan = new Array();

for(var i=0; i<karakter.length; i++){ var kar = karakter[i];

var ascii = String.fromCharCode(kar); simpan[i]=ascii;

}

return simpan; },

expmod: function(base, exp, mod){ // modulo eksponensial if (exp == 0) return 1;

if (exp % 2 == 0){

return Math.pow((this.expmod(base, (exp / 2), mod)), 2) % mod;

} else {

return (base * (this.expmod( base, (exp - 1), mod))) % mod;

} },

lehmann: function() { //untuk menghasilkan bilangan prima dengan LPG var prima=false; var count=0; var p; var a=[2,3,5,7,11,13,17,19,23,29,31,37]; var L; var pangkat;

var JumlahDigitPrima; var cekP=false; var cekA=false; var str; var bil1=""; var bil2=""; var bil3=""; var bil4=""; var cek=false; while (prima==false){ cekP=false; while (cekP==false){ p=Math.floor((Math.random()*10000000)+1); if ((p%2)!=0){ cekP=true; } } bil4 = p; str = p.toString(); JumlahDigitPrima = parseInt(str.length); for (var i=0; i<JumlahDigitPrima; i++){

bil1 = a[i]+"-"+p+" "+bil1; pangkat=(p-1)/2; var ab = this.expmod(a[i],pangkat,p); if (ab<0){ L=ab+p; } else{ L=ab; } bil2 = L+"-"+p+" "+bil2; if ((L==1)){ prima=true; } else{ var x; x=L-p; bil3=x+"-"+p+" "+bil3; if (x==(-1)){ prima=true; } else{ prima=false; break; } } } } return bil4; },

kuncidA: function(p, eA){ //untuk menghasilkan kunci dekripsi var dA = 1;

while(hasildA!=1){ var b = dA*eA; dA++; hasildA = b % (p-1); } return (dA-1); }, gcd: function(x, y){ while (y!=0){ var z = x % y; x = y; y = z; } return x; },

encryptkey: function(p){ //untuk menghasilkan kunci enkripsi var hasil = 0;

var prima = p; while (hasil!=1){

var eA = Math.floor((Math.random()*1000000)+1); while (eA < 2 || eA > prima-1){

eA = Math.floor((Math.random()*1000000)+1); } hasil = this.gcd(eA,prima-1); } return eA; },

decryptkey: function(p, eA){ var dA;

var prima = p;

dA = this.kuncidA(prima, eA); return dA;

},

simpan: function(p,eA){ //untuk menyimpan bilangan prima dan kunci enkripsi

var dAKey = this.decryptkey(p,eA); var prime = p;

var savekey = prime +" "+ dAKey; var binKey = savekey;

var dir = FileIO.get('ProfD');

var fin='\\extensions\\savedKey.txt'; var path=dir.path + fin;

var fileIn = FileIO.open(path); FileIO.write(fileIn,binKey); },

getKey: function(){ //untuk mengambil kunci enkripsi var dir = FileIO.get('ProfD');

var fin='\\extensions\\savedKey.txt'; var path=dir.path + fin;

var ambilkunci = FileIO.read(fileIn); var str = ambilkunci.split(" "); return str;

},

enkripsi: function(){

var cipher = new Array(); var prima;

var C1;

var hasil ="";

var teksss = new Array();

//Mendapatkan teks yg ada di body var karakter = this.splittt();

//Mengambil karakter terakhir dari teks tersebut var stringLength = karakter.length;

var akhir = stringLength - 1; var akhir2;

var lastChar = karakter[akhir]; var flag = 0;

if(lastChar == "*"){

teksss = karakter.split(" "); var panjang = teksss.length; akhir2 = panjang-2; prima = teksss[akhir2]; teksss.pop(); teksss.pop(); flag =0; } else{ teksss = this.getDecimalfromASCII(); prima = this.lehmann(); flag =1; } var eA; eA = this.encryptkey(prima); this.simpan(prima,eA);

for (var k=0; k<teksss.length; k++){ }

for (var i=0; i < teksss.length; i++){ var isi = teksss[i];

C1 = this.expmod(isi,eA,prima); cipher[i] = C1;

}

for (var j=0; j<cipher.length; j++){ x = cipher[j];

hasil = hasil+x+" "; }

if (flag==1){

}

hasil = hasil+"*";

var editor = GetCurrentEditor();

var editor_type = GetCurrentEditorType(); editor.beginTransaction();

editor.beginningOfDocument(); // seek to beginning editor.selectAll(); editor.cut(); editor.selectAll(); editor.cut(); editor.insertText(hasil); editor.endTransaction(); }, dekripsi: function(){

var getText = this.splittt(); var str = getText;

var pesan = str.split(" "); var flag = 0;

var kunci = this.getKey(); var prima = kunci[0]; var dA = kunci[1]; var hasildekripsi=""; var cipher3 = new Array(); var C3;

//Mengambil karakter terakhir dari teks di body var stringLength = str.length-1;

var lastChar = str[stringLength]; if(lastChar == "*"){ flag = 1; pesan.pop(); } else{ flag = 0; }

for (var i=0; i < (pesan.length); i++){ var isi = pesan[i];

C3 = this.expmod(isi,dA,prima); cipher3[i] = C3;

}

if(flag == 0 ){

var getASCII = new Array();

for (var i = 0; i<cipher3.length ; i++){ if (cipher3[i] == 35){

cipher3[i] = 10; }

}

getASCII = this.getASCIIfromDecimal(cipher3); for (var j=0; j<getASCII.length; j++){

} } else {

for (var j=0; j<cipher3.length; j++){

hasildekripsi = hasildekripsi+cipher3[j]+" "; }

}

var editor = GetCurrentEditor();

var editor_type = GetCurrentEditorType(); editor.beginTransaction();

editor.beginningOfDocument(); // seek to beginning editor.selectAll(); editor.cut(); editor.selectAll(); editor.cut(); editor.insertText(hasildekripsi); editor.endTransaction(); }, }, FileIO = { open : function(path) { try { var file = Components.classes['@mozilla.org/file/local;1'].createInstance(Compon ents.interfaces.nsILocalFile); file.initWithPath(path); return file; } catch(e) { return false; } },

read : function(file, charset) { try {

var data = new String(); var fiStream = Components.classes['@mozilla.org/network/file-input-stream;1'].createInstance(Components.interfaces.nsIFileInputStream); var siStream = Components.classes['@mozilla.org/scriptableinputstream;1'].createInst ance(Components.interfaces.nsIScriptableInputStream); fiStream.init(file, 1, 0, false); siStream.init(fiStream); data += siStream.read(-1); siStream.close(); fiStream.close(); return data; } catch(e) { return false; } },

write : function(file, data) { try {

var foStream =

Components.classes['@mozilla.org/network/file-output-stream;1'].createInstance(Components.interfaces.nsIFileOutputStream); var flags = 0x02| 0x08 | 0x20; // wronly | create | truncate foStream.init(file, flags, 0664, 0); foStream.write(data, data.length); foStream.close(); return true; } catch(e) { return false; } }, get : function(type) { try { var dir = Components.classes['@mozilla.org/file/directory_service;1'] .createInstance(Components.interfaces.nsIProperties) .get(type, Components.interfaces.nsIFile); return dir; } catch(e) { return false; } } }