This book explores the statistical characteristics of cryptographic systems and computational complexity theory algorithms

Nowadays, using cryptographic systems play an effective role in security and safety technologies. One of the most applied kind of cryptography is Symmetric Cryptography and its applications. New aspects of symmetric Cryptography methodologies and applications has been presented by this paper. Security-based networks and some complex technologies such as RFID and parallel security settings has b...

This paper introduces the idea of hierarchical visual cryptography. Authentication is the important issue over the internet. This paper describes a secured authentication mechanism with the help of visual cryptography. Visual cryptography simply divides secret information in to number of parts called shares. These shares are further transmitted over the network and at the receiving end secrets ...

The notion of a Secretly Embedded Trapdoor with Universal Protection (SETUP) has been recently introduced. In this paper we extend the study of stealing information securely and subliminally from black-box cryptosystems. The SETUP mechanisms presented here, in contrast with previous ones, leak secret key information without using an explicit subliminal channel. This extends this area of threats...

Today’s world, for secure data transmission via Internet or any public network, there is no alternative to cryptography. The role of Cryptography is most important in the field of network security. The main goal of cryptography is Confidentiality, Integrity, Authentication, Nonrepudiation. Cryptography is widely used by governmental and intelligence agencies around the world to safe transmissio...