computationally secure cipher
11Data Encryption Standard — The Feistel function (F function) of DES General Designers IBM First publis …
12Crypt (Unix) — In Unix computing, crypt is the name of both a commonly available utility program and a C programming function. Though both are used for encrypting data, they are otherwise essentially unrelated. To distinguish between the two, writers often… …
13crypt (Unix) — In Unix computing, crypt is the name of both a utility program and a C programming function. Though both are used for encrypting data, they are otherwise essentially unrelated. To distinguish between the two, writers often refer to the utility… …
14Cryptanalysis — Close up of the rotors in a Fialka cipher machine Cryptanalysis (from the Greek kryptós, hidden , and analýein, to loosen or to untie ) is the study of methods for obtaining the meaning of encrypted information, without access to the secret… …
15Digital signature — This article is about secure cryptographic signatures. For simple signatures in digital form, see Electronic signature. A digital signature or digital signature scheme is a mathematical scheme for demonstrating the authenticity of a digital… …
16Brute force attack — In cryptanalysis, a brute force attack is a method of defeating a cryptographic scheme by trying a large number of possibilities; for example, possible keys in order to decrypt a message. In most schemes, the theoretical possibility of a brute… …
17Symmetric-key algorithm — Symmetric key algorithms are a class of algorithms for cryptography that use trivially related, often identical, cryptographic keys for both decryption and encryption.The encryption key is trivially related to the decryption key, in that they may …
18Advantage (cryptography) — In cryptography, an adversary s advantage is a measure of how successfully it can attack a cryptographic algorithm, by distinguishing it from an idealized version of that type of algorithm. Note that in this context, the adversary is itself an… …
19Salt (cryptography) — In cryptography, a salt consists of random bits, creating one of the inputs to a one way function. The other input is usually a password or passphrase. The output of the one way function can be stored rather than the password, and still be used… …
20Blum-Goldwasser cryptosystem — The Blum Goldwasser (BG) cryptosystem is an asymmetric key encryption algorithm proposed by Manuel Blum and Shafi Goldwasser in 1984. Blum Goldwasser is a probabilistic, semantically secure cryptosystem with a constant size ciphertext expansion.… …
