block cipher

(redirected from Symmetric block cipher)

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 ?
To ensure a secure data exchange between the API(s) and the LMS, UpsideLMS uses Advanced Encryption Standard or AES, which is a symmetric block cipher used by the U.
AES is an abbreviation for advanced encryption stand which is iterated symmetric block cipher.
A symmetric block cipher based on the improved standard map was derived by Lian et al.
The Advanced Encryption Standard or AES is a symmetric block cipher used by the U.
The protocol uses symmetric block cipher with block size of 64 bits to encrypt content of messages.
The Blowfish is actually a symmetric block cipher that encrypts data in 8 byte (64 bit) blocks.
DES is a symmetric block cipher system that was widely used for more than two decades as encryption scheme by US federal agencies and private sector.
AES is a symmetric block cipher that encrypts/decrypts data in several rounds by taking a fixed block of 128 bits of data and producing the encrypted data.
Federal Information Processing Standard (FIPS) 197, Advanced Encryption Standard, describes the AES algorithm as a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information.
According to NIST, Advanced Encryption Standard will be publicly defined, a symmetric block cipher designed so that the key length may be increased as needed and be implementable in both hardware and software.