Sampurna Suraksha: Unconditionally Secure and Authenticated One Time Pad Cryptosystem

Information security has been a growing concern over the past few years. During the last few decades, the importance of security throughout the network and internet society has been growing constantly. These days strategic user agencies have also realized the growing importance of information security not only for strategic and government bodies but also for peaceful scientific projects. One-time pad encryption is a basic yet robust method in information security which can be used for securing short and long messages. One time pad is a cryptosystem where the plaintext is combined with a random key which is, as long as the plaintext and used only once. This cryptosystem has been proven to be actually unbreakable with the condition that the key is truly random, never reused, and is kept secret. If properly used, the system provides a formidable encryption and it will be practically impossible for any sniffer to decrypt or break one-time pad encrypted message by any type of cryptanalysis, without the proper key or even with infinite computational power. Since all plaintexts are equally probable in one time pad, it creates a strong notion of cryptanalytic difficulty. This paper explains how to use one-time pads, how to set up secure one-time pad communications, how to deal with its various security issues and also addresses the integration of other security techniques with one time pad, like a biometric finger print scanner for authentication and PKCS based Cryptoki E-tokens for authentication and confidentiality.