CRYPTOGRAPHY

Cryptography Cryptography : General [ 1 ]

Kleptography: Using Cryptography Against Cryptography

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...

Cryptography

Cryptography - Quick Guide Origin of Cryptography

The art of cryptography is considered to be born along with the art of writing. As civilizations evolved, human beings got organized in tribes, groups, and kingdoms. This led to the emergence of ideas such as power, battles, supremacy, and politics. These ideas further fueled the natural need of people to communicate secretly with selective recipient which in turn ensured the continuous evoluti...

Traceable Visual Cryptography Traceable Visual Cryptography

In this paper we present a new k out of n visual cryptography scheme which does not only meet the requirements of the basic visual cryptography scheme deened by Naor and Shamir 5] but is also traceable. With a k out of n scheme it is not possible to reveal the original secret by stacking less than k transparencies. In general one can assume that it is very unlikely that there are k shareholders...