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  2. Hill cipher - Wikipedia

    en.wikipedia.org/wiki/Hill_cipher

    Hill's cipher machine, from figure 4 of the patent. In classical cryptography, the Hill cipher is a polygraphic substitution cipher based on linear algebra.Invented by Lester S. Hill in 1929, it was the first polygraphic cipher in which it was practical (though barely) to operate on more than three symbols at once.

  3. Chaotic cryptology - Wikipedia

    en.wikipedia.org/wiki/Chaotic_cryptology

    Chaotic cryptology is the application of mathematical chaos theory to the practice of cryptography, the study or techniques used to privately and securely transmit information with the presence of a third-party or adversary. Since first being investigated by Robert Matthews in 1989, [1] the use of chaos in cryptography has attracted much ...

  4. Password-authenticated key agreement - Wikipedia

    en.wikipedia.org/wiki/Password-authenticated_key...

    ISO/IEC 11770-4:2006 Information technology—Security techniques—Key management—Part 4: Mechanisms based on weak secrets. IEEE Std 802.11-2012: IEEE Standard for Information Technology – Part 11 Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification. IEEE. 2012. ISBN 978-0-7381-8469-2. OCLC 1017978449.

  5. Outline of cryptography - Wikipedia

    en.wikipedia.org/wiki/Outline_of_cryptography

    The following outline is provided as an overview of and topical guide to cryptography: Cryptography (or cryptology) – practice and study of hiding information. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering. Applications of cryptography include ATM cards, computer passwords, and electronic ...

  6. Feistel cipher - Wikipedia

    en.wikipedia.org/wiki/Feistel_cipher

    In cryptography, a Feistel cipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named after the German-born physicist and cryptographer Horst Feistel, who did pioneering research while working for IBM; it is also commonly known as a Feistel network.

  7. Encryption - Wikipedia

    en.wikipedia.org/wiki/Encryption

    Historically, various forms of encryption have been used to aid in cryptography. Early encryption techniques were often used in military messaging. Since then, new techniques have emerged and become commonplace in all areas of modern computing. [1] Modern encryption schemes use the concepts of public-key and symmetric-key. [1]

  8. RSA problem - Wikipedia

    en.wikipedia.org/wiki/RSA_problem

    In cryptography, the RSA problem summarizes the task of performing an RSA private-key operation given only the public key. The RSA algorithm raises a message to an exponent, modulo a composite number N whose factors are not known. Thus, the task can be neatly described as finding the e th roots of an arbitrary number, modulo N.

  9. Block cipher - Wikipedia

    en.wikipedia.org/wiki/Block_cipher

    In cryptography, a block cipher is a deterministic algorithm that operates on fixed-length groups of bits, called blocks. Block ciphers are the elementary building blocks of many cryptographic protocols. They are ubiquitous in the storage and exchange of data, where such data is secured and authenticated via encryption.