# Advanced Encryption Standard/Related Articles

From Citizendium, the Citizens' Compendium

*See also changes related to Advanced Encryption Standard, or pages that link to Advanced Encryption Standard or to this page or whose text contains "Advanced Encryption Standard".*

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- Algebraic attack [r]: Attacking a cipher by writing equations that describe its operation, then solving for the key.
^{[e]} - Block cipher [r]: A symmetric cipher that operates on fixed-size blocks of plaintext, giving a block of ciphertext for each
^{[e]} - Brute force attack [r]: An attempt to break a cipher by trying all possible keys; long enough keys make this impractical.
^{[e]} - Cipher [r]: A means of combining plaintext (of letters or numbers, or bits), using an algorithm that mathematically manipulates the individual elements of plaintext, into ciphertext, a form unintelligible to any recipient that does not know both the algorithm and a randomizing factor called a cryptographic key
^{[e]} - Cryptography [r]: A field at the intersection of mathematics and computer science that is concerned with the security of information, typically the confidentiality, integrity and authenticity of some message.
^{[e]} - Cryptology [r]: The theory and practice of protecting the content of communications, and of defeating the protective measures
^{[e]} - DES (disambiguation) [r]:
*Add brief definition or description* - Data Encryption Standard [r]: A block cipher specification issued by the U.S. government in 1976, intended for sensitive but unclassified data. It is now obsolescent, succeeded by the Advanced Encryption Standard, but still used in commercial systems.
^{[e]} - Hash (cryptography) [r]: An algorithm that produces a fixed-size digest from an input of essentially arbitrary size.
^{[e]} - Health Insurance Portability and Accountability Act [r]: The Health Insurance Portability and Accountability Act of 1996 (HIPAA), public law 104-191, is a statute enacted by the 104th U. S. Congress on August 21, 1996; it's primary impact is on protecting the confidentiality of health-case data.
^{[e]} - National Security Agency [r]: An organization within the United States Department of Defense, with the dual roles of the principal signals intelligence agency in the United States intelligence community, but also having the responsibility for information assurance of military, diplomatic, and other critical communications.
^{[e]} - Signals intelligence from 1990 to the present [r]: Technology and history of signals intelligence from 1990 to the present time
^{[e]} - Symmetric key cryptography [r]: A cryptographic system in which there is only one key; the same secret key is used for encryption and decryption.
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