SECURE NOTEPAD

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SECURE NOTEPAD

• BYANKUR DESHMUKH
• P JAYA SUNDERAM

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OVERVIEW

• Why this project ?
• Overview of SSL
• Architecture
• Overview of JSSE
• Our application

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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

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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

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SSL (continued)
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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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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

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ARCHITECTURE
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CODE SNIPPET

• Client
• // Create a non-blocking socket channel
• SocketChannel socketChannel SocketChannel.open()
  
• socketChannel.configureBlocking(false)
• socketChannel.connect(new InetSocketAddress(hostna
  me, 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.hasRemain
  ing()) // Use peerAppData

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SECURE NOTEPAD

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

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BIBLIOGRAPHY

• www.java.sun.com
• www.openssl.org
• Cryptography and Network Security PRINCIPLIES
  AND PRACTICES, William Stallings