What is cryptography?


Cryptography (or cryptology; from Greek κρυπτός, "hidden, secret"; and γράφειν, graphein, "writing", or -λογία, -logia, "study", respectively) is the practice and study of techniques for secure communication in the presence of third parties (called adversaries). More generally, it is about constructing and analyzing protocols that overcome the influence of adversaries and which are related to various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation. Modern cryptography intersects the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.

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Some articles on cryptography:

Cryptography - Legal Issues - Digital Rights Management
... Cryptography is central to digital rights management (DRM), a group of techniques for technologically controlling use of copyrighted material, being ... This had a noticeable impact on the cryptography research community since an argument can be made that any cryptanalytic research violated, or might violate, the DMCA ... Niels Ferguson, a well-respected cryptography researcher, has publicly stated that he will not release some of his research into an Intel security design for fear of ...
Counting Points On Elliptic Curves
... such as number theory, and more recently in cryptography and Digital Signature Authentication (See elliptic curve cryptography and elliptic curve DSA) ... of Diophantine equations, with respect to cryptography, they enable us to make effective use of the difficulty of the discrete logarithm problem (DLP) for the group, of ... The DLP, as it has come to be known, is a widely used approach to Public key cryptography, and the difficulty in solving this problem determines the level of security of the cryptosystem ...
Cryptography Research
... Cryptography Research, Inc. ... is a San Francisco based cryptography company specializing in applied cryptographic engineering, including technologies for building tamper-resistant semiconductors ... Cryptography Research protects its core operations from outside attack by maintaining a secured local network that is not connected to the Internet at all ...

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