SECURE NOTEPAD BY ANKUR DESHMUKH & P JAYA SUNDERAM

OVERVIEW  Why this project ?  Overview of SSL  Architecture  Overview of JSSE  Our application

WHY THIS PROJECT ?  Convenience for users.  Learn about SSL (Secure Socket Layer)  Explore JSSE (Java Secure Socket Extension)  A big help to us.  Effort to make a contribution to open source

SSL – SECURE SOCKET LAYER  Introduced by Netscape in 1994  Most widely used protocol for implementing cryptography on the web.  Used over TCP.  Why use SSL Authenticate user Protect data from attackers  SSL architecture

SSL (…continued)

JSSE OVERVIEW  Implemented in 100% Pure Java  Provides API support for SSL versions 2.0 and 3.0, and an implementation of SSL version 3.0  Includes classes that can be instantiated to create secure channels (SSLSocket, SSLServerSocket, and SSLEngine)  Support for various ciphers like RSA, DES, AES,DSA and others.

…Continued  Provides support for client and server authentication, which is part of the normal SSL handshaking  Provides support for HTTP encapsulated in the SSL protocol (HTTPS), which allows access to data such as web pages using HTTPS  It ships with JSDK 1.4.2

ARCHITECTURE

CODE SNIPPET  Client  // Create a non-blocking socket channel  SocketChannel socketChannel = SocketChannel.open();  socketChannel.configureBlocking(false);  socketChannel.connect(new InetSocketAddress(hostname, port));  // Do initial handshake  doHandshake(socketChannel, engine, myNetData, peerNetData);  myAppData.put("hello".getBytes());  Server  int num = socketChannel.read(peerNetData);  if (num == -1) { // Handle closed channel } else if (num == 0) { // No bytes read; try again... } else { // Process incoming data peerNetData.flip();  res = engine.unwrap(peerNetData, peerAppData);  if (res.getStatus() == SSLEngineResult.Status.OK) { peerNetData.compact(); if (peerAppData.hasRemaining()) { // Use peerAppData } }

SECURE NOTEPAD  Written in java  Incorporated security using SSL  Emulates basic features of a notepad. Edit Formatting

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BIBLIOGRAPHY    Cryptography and Network Security: PRINCIPLIES AND PRACTICES, William Stallings