block cipher


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Related to block cipher: Cipher Block Chaining, Block cipher modes of operation

block cipher

[′bläk ‚sī·fər]
(communications)
A cipher that transforms a string of input bits of fixed length into a string of output bits of fixed length.

block cipher

An encryption method that processes the input stream as groups of bytes that are fixed in size, typically 64, 128 or 256 bits long. The state of a block cipher is reset before processing each block. The DES and AES algorithms are examples of block ciphers (see DES and AES). Contrast with stream cipher.
References in periodicals archive ?
In 2001, the National Institute of Standards and Technology (NIST) established the US Government standard 128-bit block cipher called the Advanced Encryption Standard.
In 2001, the National Institute of Standards and Technology (NIST) established a US Government Standard 128-bit block Cipher called the Advanced Encryption Standard.
1) A 64-bit block cipher algorithm with a 128-bit encryption key developed by Mitsubishi Electric
The device generates 32-bit code hopping value based on a non-linear block cipher encryption algorithm.
The scaleable, channelized, high-performance cryptographic core performs streaming and block cipher encryption at the fastest data rates in the industry--capable of over 10 million packets per second.
Based on the KASUMI algorithm, a block cipher that produces a 64-bit output from a 64-bit input under the control of a 128-bit key, the confidentiality algorithm is a stream cipher that is used to encrypt/decrypt blocks of data under a confidentiality key.
Digify uses the 256-bit Advanced Encryption Standard (AES-256), one of the strongest block ciphers available.
12288;The standard consists of 4 parts: 1) General, 2) Block ciphers, 3) Stream ciphers, and 4) Mechanism for using public key cryptography.
The nonlinear filter function is replaced by NMix, a nonlinear key mixing function used for block ciphers.
The standard comprises three block ciphers, AES-128, AES-192 and AES-256 and specifies that each AES cipher has a 128-bit block size, with encryption key sizes of 128, 192 and 256 bits, respectively.
Data-driven block ciphers for fast telecommunication systems.
Jakobsen also built an esteemed career as an academic, having been assistant professor at the Technical University of Denmark, where he co-invented the so-called interpolation attack on block ciphers.