Twofish: Cryptography, Symmetric-Key Algorithm, Block Cipher, Block Size, Advanced Encryption Standard Proces, Blowfish, Key Schedule, S-Box, Pseudo-Hadamard Transform - Brossura

Brossura

ISBN 10: 6130354819 ISBN 13: 9786130354817

Casa editrice: Betascript Publishing, 2010

Riassunto

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of the Advanced Encryption Standard contest, but was not selected for standardisation. Twofish is related to the earlier block cipher Blowfish.Twofish''s distinctive features are the use of pre-computed key-dependent S-boxes, and a relatively complex key schedule. One half of an n-bit key is used as the actual encryption key and the other half of the n-bit key is used to modify the encryption algorithm (key-dependent S-boxes). Twofish borrows some elements from other designs; for example, the pseudo-Hadamard transform (PHT) from the SAFER family of ciphers. Twofish uses the same Feistel structure as DES.

Dettagli dell'edizione

• Editore: Betascript Publishing
• Data di pubblicazione: 2010
• Lingua: Inglese
• ISBN 10: 6130354819
• ISBN 13: 9786130354817
• Rilegatura: Copertina flessibile
• Numero di pagine: 80
• Redattore: Surhone Lambert M., Timpledon Miriam T., Marseken Susan F.
• Contatto del produttore: non disponibile
• Persona responsabile: non disponibile