SECURE NOTEPAD

BYANKUR 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.

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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.

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BIBLIOGRAPHY www.java.sun.com www.openssl.org Cryptography and Network Security:

PRINCIPLIES AND PRACTICES, William Stallings