cipher communication

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• Communication Theory of Secrecy Systems — is a paper published in 1949 by Claude Shannon discussing cryptography from the viewpoint of information theory. It is one of the foundational treatments (arguably the foundational treatment) of modern cryptography. It is also a proof that all… …   Wikipedia

• Cipher suite — A cipher suite is a named combination of authentication, encryption, and message authentication code (MAC) algorithms used to negotiate the security settings for a network connection using the Transport Layer Security (TLS) or Secure Sockets… …   Wikipedia

• cipher — /sayfar/ Ordinarily, a secret or disguised written communication, unintelligible to one without a key. As applied to telegrams, a cipher message is one that is unintelligible …   Black's law dictionary

• cipher — /sayfar/ Ordinarily, a secret or disguised written communication, unintelligible to one without a key. As applied to telegrams, a cipher message is one that is unintelligible …   Black's law dictionary

• Caesar cipher — The action of a Caesar cipher is to replace each plaintext letter with one fixed number of places down the alphabet. This example is with a shift of three, so that a B in the p …   Wikipedia

• Automated Teller Machine Communication Security — Automated Teller Machines were first used in 1939. Nowadays, about 1.5 million are installed worldwide [ [http://www.atmmarketplace.com/news story 24706.htm Number of ATMs worldwide expected to hit 1.5 million in December 2005] www.atmmarketplace …   Wikipedia

• DECT Standard Cipher — is an encryption standard, used in DECT phones to protect communication between a handset and its associated base station. While most of the DECT standard is publicly available, the part describing the DECT Standard Cipher was only available… …   Wikipedia

• Pigpen cipher — The pigpen cipher uses graphical symbols assigned according to a key similar to the above diagram.[1] The pigpen cipher (sometimes referred to as the masonic cipher, Freemason s cipher, Rosicrucian cipher, or Tic tac toe cipher) …   Wikipedia

• Purple (cipher machine) — This article is about the Japanese cipher Purple, also known as AN 1 (citation for AN 1 nomenclature for Purple?). For other Japanese ciphers, such as JN 25 which played a part in the Battle of Midway, see Japanese naval codes. In the history of… …   Wikipedia

• Nihilist cipher — In the history of cryptography, the Nihilist cipher is a manually operated symmetric encryption cipher originally used by Russian Nihilists in the 1880s to organize terrorism against the czarist regime. The term is sometimes extended to several… …   Wikipedia

• Null cipher — A null cipher is an ancient form of encryption where the plaintext is mixed with a large amount of non cipher material. It would today be regarded as a simple form of steganography. Null ciphers can also be used to hide ciphertext, as part of a… …   Wikipedia