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  2. Cryptography - Wikipedia

    en.wikipedia.org/wiki/Cryptography

    Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία-logia, "study", respectively [1]), is the practice and study of techniques for secure communication in the presence of adversarial behavior. [2] More generally, cryptography is about ...

  3. Key derivation function - Wikipedia

    en.wikipedia.org/wiki/Key_derivation_function

    Example of a Key Derivation Function chain as used in the Signal Protocol.The output of one KDF function is the input to the next KDF function in the chain. In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a ...

  4. 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 ...

  5. History of cryptography - Wikipedia

    en.wikipedia.org/wiki/History_of_cryptography

    The earliest known use of cryptography is found in non-standard hieroglyphs carved into the wall of a tomb from the Old Kingdom of Egypt circa 1900 BC. [1] These are not thought to be serious attempts at secret communications, however, but rather to have been attempts at mystery, intrigue, or even amusement for literate onlookers. [2]

  6. Encryption - Wikipedia

    en.wikipedia.org/wiki/Encryption

    A simple illustration of public-key cryptography, one of the most widely used forms of encryption. In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode.

  7. Communication Theory of Secrecy Systems - Wikipedia

    en.wikipedia.org/wiki/Communication_Theory_of...

    In the paper, Shannon defined unicity distance, and the principles of confusion and diffusion, which are key to a secure cipher. [6] Shannon published an earlier version of this research in the formerly classified report A Mathematical Theory of Cryptography, Memorandum MM 45-110-02, Sept. 1, 1945, Bell Laboratories.

  8. Cryptography Research's Ben Jun to Participate in Expert ...

    www.aol.com/2012/12/05/cryptography-researchs...

    Cryptography Research's Ben Jun to Participate in Expert Panel at Amphion Forum 2012 SAN FRANCISCO--(BUSINESS WIRE)-- Cryptography Research, Inc.: Who: Ben Jun, vice president and chief technology ...

  9. Cipher - Wikipedia

    en.wikipedia.org/wiki/Cipher

    An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code. In common parlance, "cipher" is synonymous with "code", as they are both a set of steps that encrypt a message; however, the concepts are distinct in cryptography, especially classical cryptography.

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