Perancangan Add On Keamanan Email Mozilla Thunderbird dengan Algoritma Kriptografixor dan Three Pass Protocol Serta Kompresi Lempelziv Welch
LAMPIRAN A : LISTING PROGRAM
File : chrome.manifestcontent 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="Proyek Tugas Akhir S-1 Ilmu Komputer USU" em:description="Add On Keamanan EMail dengan Kriptografi XOR
Menggunakan Threee Pass Protocol dan Kompresi Lempel Ziv Welch (LZW)" em:creator="Brikson Hara Donald Barus - 081401037" em:id="addonenkripsikompresi@ilmukomputer.usu.ac.id" em:version="1.0" em:iconURL="chrome://addonta/content/icon.png" > <em:targetApplication><!-- Thunderbird -->
<Description em:id="{3550f703-e582-4d05-9a08-453d09bdfdc6}" em:minVersion="1.4" em:maxVersion="11.*" /> </em:targetApplication> <em:file>
<Description about="urn:mozilla:extension:addonta" em:package="content/addonta/" /> </em:file> </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/scriptForAddOn.js"/> <!-- Thunderbird compose --> <toolbarpalette id="MsgComposeToolbarPalette"> <toolbarbutton id="button-enkripsi"/> <toolbarbutton id="button-dekripsi"/> </toolbarpalette> <toolbarbutton id="button-enkripsi" label="Enkripsi" tooltiptext="Digunakan untuk melakukan Enkripsi dan
Proses Kompresi-Dekompresi yang diperlukan" oncommand="cryptography.encryptionTPPControlProcess()" class="toolbarbutton-1 chromeclass-toolbar-additional addonta" /> <toolbarbutton id="button-dekripsi" label="Dekripsi" tooltiptext="Digunakan untuk melakukan Dekripsi dan
Proses Kompresi-Dekompresi yang diperlukan" oncommand="cryptography.decryptionTPPControlProcess()" class="toolbarbutton-1 chromeclass-toolbar-additional addonta" /> </overlay>
File : scriptForAddOn.js
var cryptography={ plainText:'', key:'', cipherText:'', inputText:'', getBodyText: function(){ var composer = document.getElementById('msgcomposeWindow'); var source = composer.getElementsByAttribute('id', 'content- frame').item(0).contentDocument.documentElement; this.inputText = source.textContent;
}, lcgKeyGenerator: function(lengthOfKey){ var time= new Date; var a=time.getMinutes(); var b=time.getSeconds(); var x=0, x1=0; this.key=''; do{ x1=((a*x)+b)%64; x=x1; this.key+=encoDecoding.getBiner(x);
} while((lengthOfKey-this.key.length)>=6) if(((lengthOfKey-this.key.length)<6)&&((lengthOfKey- this.key.length)>0)){ x1=((a*x)+b)%64; x=x1; var temp=encoDecoding.getBiner(x); this.key+=temp.slice(6-(lengthOfKey-this.key.length));
} }, writeOnCompose: function(textToWritten){ var editor = GetCurrentEditor(); var editor_type = GetCurrentEditorType(); editor.beginTransaction(); editor.beginningOfDocument(); // seek to beginning editor.selectAll(); editor.cut(); editor.selectAll(); editor.cut(); editor.insertText(textToWritten); editor.endTransaction();
}, encryptionTPPControlProcess: function(){ this.getBodyText(); if(this.inputText.length!=0){ var flag=this.inputText.slice(0,3); if(flag=='[1]'){ this.plainText=this.inputText.slice(3); var start= new Date().getTime(); var binPlain=encoDecoding.base64Decode(this.plainText); var timeP= new Date().getTime()-start; alert('Waktu Decoding Tahap-2 = '+timeP+' milisecond'); start= new Date().getTime(); var binCipher=this.encrypt(binPlain); timeP= new Date().getTime()-start; alert('Waktu Enkripsi Tahap-2 = '+timeP+' milisecond'); if(binCipher!=''){ start= new Date().getTime(); this.cipherText=encoDecoding.base64Encode(binCipher); timeP= new Date().getTime()-start; alert('Waktu Encoding Tahap-2 = '+timeP+' milisecond'); this.writeOnCompose('[2]'+this.cipherText); var dir = ioFileAccessing.getDirectory('ProfD'); var fin='\\extensions\\Key_Enkripsi_2.txt'; var path=dir.path + fin; var fileIn = ioFileAccessing.open(path); ioFileAccessing.write(fileIn,this.key); alert('Terima Kasih.. \nProses Enkripsi Berhasil
(Silahkan Lanjutkan Proses Selanjutnya)'); }
} else if(flag=='[2]'){ alert('Maaf Proses Three Pass Protocol (Tahap Ke-3) yang seharusnya anda lakukan adalah Dekripsi');
} else if(flag=='[3]'){ alert('Maaf Proses Three Pass Protocol (Tahap Ke-4) yang seharusnya anda lakukan adalah Dekripsi');
} else { this.plainText=this.inputText; alert('Panjang Plainteks = ' +this.plainText.length); alert('Panjang Bit Plainteks =
'+this.plainText.length*8); var start=new Date().getTime(); var compressed=lzwCompression.compress(this.plainText); var timeP= new Date().getTime()-start; alert('Waktu Kompresi = '+timeP+' milisecond'); var dicBitLength=lzwCompression.getDictionaryBitLength(); var binCompressed=lzwCompression.binarizeCompressed(compressed); alert('Panjang Bit Kamus = '+dicBitLength); alert('Panjang Bit Hasil Kompresi =
'+binCompressed.length); var start= new Date().getTime(); var binCipher=this.encrypt(binCompressed); var timeP= new Date().getTime()-start; alert('Waktu Enkripsi Tahap-1 = '+timeP+' milisecond'); if(binCipher!=''){ start= new Date().getTime(); this.cipherText=encoDecoding.base64Encode(binCipher); timeP= new Date().getTime()-start; alert('Waktu Encoding Tahap-1 = '+timeP+' milisecond'); this.writeOnCompose('[1]'+this.cipherText); var dir = ioFileAccessing.getDirectory('ProfD'); var fin='\\extensions\\Key_Enkripsi_1.txt'; var path=dir.path + fin; var fileIn = ioFileAccessing.open(path); ioFileAccessing.write(fileIn,this.key); fin='\\extensions\\Panjang Bit Kamus.txt'; path=dir.path + fin; fileIn = ioFileAccessing.open(path); ioFileAccessing.write(fileIn,String(dicBitLength)); alert('Terima Kasih.. \nProses Enkripsi Berhasil
(Silahkan Lanjutkan Proses Selanjutnya)'); }
} } else { alert('Maaf, Anda belum memasukkan pesan!'); }
}, decryptionTPPControlProcess: function(){ this.getBodyText(); if(this.inputText.length!=0){ var flag=this.inputText.slice(0,3); if(flag=='[1]'){ alert('Maaf Proses Three Pass Protocol (Tahap Ke-2) yang seharusnya anda lakukan adalah Enkripsi');
} else if(flag=='[2]'){ this.cipherText=this.inputText.slice(3); var dir = ioFileAccessing.getDirectory('ProfD'); var fin='\\extensions\\Key_Enkripsi_1.txt'; var path=dir.path + fin; var fileIn = ioFileAccessing.open(path); this.key = ioFileAccessing.read(fileIn); dir = ioFileAccessing.getDirectory('ProfD'); fin='\\extensions\\Panjang Bit Kamus.txt'; path=dir.path + fin; fileIn = ioFileAccessing.open(path); var dicBitLenth = eval(ioFileAccessing.read(fileIn)); var start= new Date().getTime(); var binCipher=encoDecoding.base64Decode(this.cipherText); var timeP= new Date().getTime()-start; alert('Waktu Decoding Tahap-3 = '+timeP+' milisecond'); start= new Date().getTime(); var binPlain=this.decrypt(binCipher); timeP= new Date().getTime()-start; alert('Waktu Dekripsi Tahap-3 = '+timeP+' milisecond'); if(binPlain!=''){ start= new Date().getTime(); this.plainText=encoDecoding.base64Encode(binPlain); timeP= new Date().getTime()-start; alert('Waktu Encoding Tahap-3 = '+timeP+' milisecond'); this.writeOnCompose('[3]'+String(dicBitLenth)+'&'+this.plainText); alert('Terima Kasih.. \nProses Dekripsi Berhasil
(Silahkan Lanjutkan Proses Selanjutnya)'); }
} else if(flag=='[3]'){ var procCipherText=this.inputText.slice(3); var signLoc=0; for(var i=0;i<=procCipherText.length-1;i++){ if(procCipherText.charAt(i)=='&'){ signLoc=i; i=procCipherText.length;
} } var dicBinLength=eval(procCipherText.slice(0,signLoc)); this.cipherText=procCipherText.slice(signLoc+1); var dir = ioFileAccessing.getDirectory('ProfD'); var fin='\\extensions\\Key_Enkripsi_2.txt'; var path=dir.path + fin; var fileIn = ioFileAccessing.open(path); this.key = ioFileAccessing.read(fileIn); var start= new Date().getTime(); var binCipher=encoDecoding.base64Decode(this.cipherText); var timeP= new Date().getTime()-start; alert('Waktu DeCoding Tahap Akhir = '+timeP+' milisecond'); start= new Date().getTime(); var binPlain=this.decrypt(binCipher); timeP= new Date().getTime()-start; alert('Waktu Dekripsi Tahap Akhir = '+timeP+' milisecond'); if(binPlain!=''){ lzwCompression.setDictionaryBitLength(dicBinLength); var compressedPlain=lzwCompression.decCompressed(binPlain); start= new Date().getTime(); this.plainText=lzwCompression.decompress(compressedPlain); timeP= new Date().getTime()-start; alert('Waktu Dekompresi Tahap Akhir = '+timeP+' milisecond'); this.writeOnCompose(this.plainText); alert('Terima Kasih.. \nProses Dekripsi Berhasil, Proses
Terakhir Telah Berhasil Dilakukan.'); }
} else { alert('Maaf Proses Three Pass Protocol (Tahap Pertama) yang seharusnya anda lakukan adalah Enkripsi'); } } else { alert('Maaf, Anda belum memasukkan pesan!'); }
}, xorOperation: function(opr1,opr2){ var result = ''; if(opr1.length==opr2.length){ for(var i=0;i<=opr1.length-1;i++){ var temp=eval(opr1.charAt(i))^eval(opr2.charAt(i)); result+=temp;
} } else { alert('Mohon Maaf Operasi XOR Tidak Dapat Dilakukan terdapat
Kesalahan.'+'\nMohon Ulangi Proses Three Pass Protocol'); } return result;
}, encrypt: function(binPlain){ this.lcgKeyGenerator(binPlain.length); var binCipher=this.xorOperation(binPlain,this.key); return binCipher;
}, decrypt: function(binCipher){ var binPlain=this.xorOperation(binCipher,this.key); return binPlain;
} }, lzwCompression={ dictionary:new Array(), dictionaryBitLength:0, setDictionary: function(){ this.dictionary=[]; for(var i=0;i<=255;i++){ this.dictionary[i]=String.fromCharCode(i); } this.dictionaryBitLength=(this.dictionary.length-
1).toString(2).length; }, getIndexfromDictionary:function(lookChars){ var dictionaryIndex=this.dictionary.indexOf(lookChars); return dictionaryIndex;
}, getDictionaryBitLength:function(){ return this.dictionaryBitLength;
}, setDictionaryBitLength:function(dicBitLength){ this.dictionaryBitLength=dicBitLength;
}, getStreamfromDictionary:function(indexOfDictionary){ var stream=''; if(indexOfDictionary<=this.dictionary.length-1){ stream=this.dictionary[indexOfDictionary];
} return stream; }, addToDictionary: function(addedStream){ var lastIndex=this.dictionary.length; lastIndex++; this.dictionary[lastIndex]=addedStream; this.dictionaryBitLength=(lastIndex-1).toString(2).length;
}, compress: function(inputStream){ this.setDictionary(); var compressed=new Array(); var resultCount=0; var lookAhead=''; for(var i=0;i<=inputStream.length-1;i++){ var nextChar=inputStream.charAt(i); var lookAheadNext=lookAhead+nextChar; var indDictionary=this.getIndexfromDictionary(lookAheadNext); if(indDictionary != -1){ lookAhead=lookAheadNext;
} else { compressed[resultCount]=this.getIndexfromDictionary(lookAhead); resultCount++; this.addToDictionary(lookAheadNext); lookAhead=nextChar;
} if(i==inputStream.length-1){ compressed[resultCount]=this.getIndexfromDictionary(lookAhead);
} } return compressed;
}, decompress:function(inputStream){ this.setDictionary(); var uncompressed=''; var resultCount=0; var prev=''; var prev=this.getStreamfromDictionary(inputStream[0]); uncompressed+=prev; resultCount++; var entry; for(var i=1;i<=inputStream.length-1;i++){ var temp=this.getStreamfromDictionary(inputStream[i]); if(temp!=''){ entry=temp; } else { entry=prev+prev.charAt(0); } uncompressed+=entry; resultCount++; this.addToDictionary(prev+entry.charAt(0)); prev=entry;
} return uncompressed; }, binarizeCompressed: function(inputDecimals){ var binCompressedResult=''; for(var i=0;i<=inputDecimals.length-1;i++){ var temp=inputDecimals[i].toString(2); var lengthOfPadding=this.dictionaryBitLength-temp.length; var padding=''; for(var j=0;j<=lengthOfPadding-1;j++){ padding+='0';
} temp=padding+temp; binCompressedResult+=temp;
} return binCompressedResult; }, decCompressed: function(inputBin){ var counter=0; var decimalOfBit=new Array(); var index=0; do{ var temp=inputBin.substring(counter,(counter+this.dictionaryBitLength)); var dec=0; for(var i=0;i<=this.dictionaryBitLength-1;i++){ var bitval=eval(temp.charAt(i)); var valOfBit=Math.pow(2,(this.dictionaryBitLength-
(i+1))); dec+=(bitval*valOfBit); } decimalOfBit[index]=dec; index++; counter+=this.dictionaryBitLength;
} while((inputBin.length-counter)>=9) return decimalOfBit; } }, encoDecoding={ base64CharSet:'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01 23456789+/', paddingSign: new Array("!","@","#","$","%"), base64Encoded:'', getDecimal: function(binStream){ var dec=0; dec+=eval(binStream.charAt(0))*32; dec+=eval(binStream.charAt(1))*16; dec+=eval(binStream.charAt(2))*8; dec+=eval(binStream.charAt(3))*4; dec+=eval(binStream.charAt(4))*2; dec+=eval(binStream.charAt(5))*1; return dec;
}, getBiner: function(dec){ var temp=dec.toString(2); var padding=6-temp.length; var bin=''; switch(padding){ case 1: bin='0'+temp; break; case 2: bin='00'+temp; break; case 3: bin='000'+temp; break; case 4: bin='0000'+temp; break; case 5: bin='00000'+temp; break; default : bin=temp;
} return bin; }, base64Encode: function(unencodedBits){ var counter=0; var temp=''; var index=0; this.base64Encoded=''; do{ temp=unencodedBits.substring(counter,counter+6); counter+=6; index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index);
}while((unencodedBits.length-counter)>=6) if((unencodedBits.length-counter)==1){ temp='00000'+unencodedBits.slice(counter); index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index)+this.paddingS ign[0]; } if((unencodedBits.length-counter)==2){ temp='0000'+unencodedBits.slice(counter); index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index)+this.paddingS ign[1]; } if((unencodedBits.length-counter)==3){ temp='000'+unencodedBits.slice(counter); index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index)+this.paddingS ign[2]; } if((unencodedBits.length-counter)==4){ temp='00'+unencodedBits.slice(counter); index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index)+this.paddingS ign[3]; } if((unencodedBits.length-counter)==5){ temp='0'+unencodedBits.slice(counter); index=this.getDecimal(temp); this.base64Encoded+=this.base64CharSet.charAt(index)+this.paddingS ign[4]; } return this.base64Encoded;
}, base64Decode: function(encoded){ var unencodedBits=''; var sign=0; var len=encoded.length; var lastChar=encoded.charAt(len-1); for(var i=0;i<=4;i++){ if(lastChar==this.paddingSign[i]){ sign=6-(i+1);
} } if(sign==0){ for(var i=0;i<=len-1;i++){ for(var j=0;j<=this.base64CharSet.length-1;j++){ if(encoded.charAt(i)==this.base64CharSet.charAt(j)){ unencodedBits+=this.getBiner(j); j=this.base64CharSet.length;
} }
} } else { for(var i=0;i<=len-3;i++){ for(var j=0;j<=this.base64CharSet.length-1;j++){ if(encoded.charAt(i)==this.base64CharSet.charAt(j)){ unencodedBits+=this.getBiner(j); j=this.base64CharSet.length;
} }
} var temp=encoded.charAt(len-2); for(var j=0;j<=this.base64CharSet.length-1;j++){ if(temp==this.base64CharSet.charAt(j)){ var binLast=this.getBiner(j); unencodedBits+=binLast.slice(sign); j=this.base64CharSet.length;
} }
} return unencodedBits; } }, ioFileAccessing={ 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;
} }, getDirectory: 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;
} } };