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block cipher |
Also found in: Wikipedia | 0.02 sec. |
block cipherAn 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. 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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nbsp;/rayn-dahl/ symmetric block cipher, designed by Joan Daemen and Vincent Rijmen, was chosen by a NIST contest to be AES. The Rijndael /rayn-dahl/ symmetric block cipher, designed by Joan Daemen and Vincent Rijmen, was chosen by a NIST contest to be AES. 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. |
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