Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

S-box

Index S-box

In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. [1]

33 relations: Backdoor (computing), Bent function, Bijection, injection and surjection, Bit, Block cipher, Blowfish (cipher), Boolean function, Brighton, Carlisle Adams, Cipher, Ciphertext, Claude Shannon, Confusion and diffusion, Cryptanalysis, Cryptography, Data Encryption Standard, Differential cryptanalysis, Eurocrypt, John Wiley & Sons, Kaisa Nyberg, Key (cryptography), Lookup table, Nothing up my sleeve number, PDF, Permutation box, PostScript, Queen's University, Rijndael S-box, Selected Areas in Cryptography, Substitution cipher, Symmetric-key algorithm, Transposition cipher, Twofish.

Backdoor (computing)

A backdoor is a method, often secret, of bypassing normal authentication or encryption in a computer system, a product, or an embedded device (e.g. a home router), or its embodiment, e.g. as part of a cryptosystem, an algorithm, a chipset, or a "homunculus computer" (such as that as found in Intel's AMT technology).

New!!: S-box and Backdoor (computing) · See more »

Bent function

In the mathematical field of combinatorics, a bent function is a special type of Boolean function.

New!!: S-box and Bent function · See more »

Bijection, injection and surjection

In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each other.

New!!: S-box and Bijection, injection and surjection · See more »

Bit

The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.

New!!: S-box and Bit · See more »

Block cipher

In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called a block, with an unvarying transformation that is specified by a symmetric key.

New!!: S-box and Block cipher · See more »

Blowfish (cipher)

Blowfish is a symmetric-key block cipher, designed in 1993 by Bruce Schneier and included in a large number of cipher suites and encryption products.

New!!: S-box and Blowfish (cipher) · See more »

Boolean function

In mathematics and logic, a (finitary) Boolean function (or switching function) is a function of the form ƒ: Bk → B, where B.

New!!: S-box and Boolean function · See more »

Brighton

Brighton is a seaside resort on the south coast of England which is part of the city of Brighton and Hove, East Sussex, 47 miles (75 km) south of London.

New!!: S-box and Brighton · See more »

Carlisle Adams

Carlisle M. Adams is a Canadian cryptographer and computer security researcher.

New!!: S-box and Carlisle Adams · See more »

Cipher

In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure.

New!!: S-box and Cipher · See more »

Ciphertext

In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher.

New!!: S-box and Ciphertext · See more »

Claude Shannon

Claude Elwood Shannon (April 30, 1916 – February 24, 2001) was an American mathematician, electrical engineer, and cryptographer known as "the father of information theory".

New!!: S-box and Claude Shannon · See more »

Confusion and diffusion

In cryptography, confusion and diffusion are two properties of the operation of a secure cipher identified by Claude Shannon in his 1945 classified report A Mathematical Theory of Cryptography. These properties, when present, work to thwart the application of statistics and other methods of cryptanalysis.

New!!: S-box and Confusion and diffusion · See more »

Cryptanalysis

Cryptanalysis (from the Greek kryptós, "hidden", and analýein, "to loosen" or "to untie") is the study of analyzing information systems in order to study the hidden aspects of the systems.

New!!: S-box and Cryptanalysis · See more »

Cryptography

Cryptography or cryptology (from κρυπτός|translit.

New!!: S-box and Cryptography · See more »

Data Encryption Standard

The Data Encryption Standard (DES) is a symmetric-key algorithm for the encryption of electronic data.

New!!: S-box and Data Encryption Standard · See more »

Differential cryptanalysis

Differential cryptanalysis is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash functions.

New!!: S-box and Differential cryptanalysis · See more »

Eurocrypt

Eurocrypt (or EUROCRYPT) is a conference for cryptography research.

New!!: S-box and Eurocrypt · See more »

John Wiley & Sons

John Wiley & Sons, Inc., also referred to as Wiley, is a global publishing company that specializes in academic publishing.

New!!: S-box and John Wiley & Sons · See more »

Kaisa Nyberg

Kaisa Nyberg is a cryptographer and computer security researcher and an emeritus professor at Aalto University School of Science.

New!!: S-box and Kaisa Nyberg · See more »

Key (cryptography)

In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm.

New!!: S-box and Key (cryptography) · See more »

Lookup table

In computer science, a lookup table is an array that replaces runtime computation with a simpler array indexing operation.

New!!: S-box and Lookup table · See more »

Nothing up my sleeve number

In cryptography, nothing-up-my-sleeve numbers are any numbers which, by their construction, are above suspicion of hidden properties.

New!!: S-box and Nothing up my sleeve number · See more »

PDF

The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

New!!: S-box and PDF · See more »

Permutation box

In cryptography, a permutation box (or P-box) is a method of bit-shuffling used to permute or transpose bits across S-boxes inputs, retaining diffusion while transposing.

New!!: S-box and Permutation box · See more »

PostScript

PostScript (PS) is a page description language in the electronic publishing and desktop publishing business.

New!!: S-box and PostScript · See more »

Queen's University

Queen's University at Kingston (commonly shortened to Queen's University or Queen's) is a public research university in Kingston, Ontario, Canada.

New!!: S-box and Queen's University · See more »

Rijndael S-box

The Rijndael S-box is a square matrix (square array of numbers) used in the Rijndael cipher, which the Advanced Encryption Standard (AES) cryptographic algorithm was based on.

New!!: S-box and Rijndael S-box · See more »

Selected Areas in Cryptography

Selected Areas in Cryptography (SAC) is an international cryptography conference (originally a workshop) held every August in Canada since 1994.

New!!: S-box and Selected Areas in Cryptography · See more »

Substitution cipher

In cryptography, a substitution cipher is a method of encrypting by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.

New!!: S-box and Substitution cipher · See more »

Symmetric-key algorithm

Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both encryption of plaintext and decryption of ciphertext.

New!!: S-box and Symmetric-key algorithm · See more »

Transposition cipher

In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext constitutes a permutation of the plaintext.

New!!: S-box and Transposition cipher · See more »

Twofish

In cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits.

New!!: S-box and Twofish · See more »

Redirects here:

Cryptography/s-box, S Box, S box, S-Box, S-boxes, S-table, SBox, Sbox, Substitution box, Substitution boxes.

References

[1] https://en.wikipedia.org/wiki/S-box

OutgoingIncoming
Hey! We are on Facebook now! »