Copertina di BEAR and LION Ciphers
Titolo del libro:

BEAR and LION Ciphers

Betascript Publishing (06.09.2010 )

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ISBN-13:

978-613-2-49196-1

ISBN-10:
6132491961
EAN:
9786132491961
Lingua del libro:
Inglese
Risvolto di copertina:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The BEAR and LION block ciphers were invented by Ross Anderson and Eli Biham by combining a stream cipher and a cryptographic hash function. The algorithms use a very large variable block size, on the order of 213 to 223 bits or more. Both are 3 round generalized Feistel ciphers, using the hash function and the stream cipher as round functions. BEAR uses the hash function twice with independent keys, and the stream cipher once. LION uses the stream cipher twice and the hash function once. The inventors proved that an attack on either BEAR or LION that recovers the key would break both the stream cipher and the hash. In cryptography, a block cipher is a symmetric key cipher operating on fixed-length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128-bit block of plaintext as input, and output a corresponding 128-bit block of ciphertext. The exact transformation is controlled using a second input — the secret key.
Casa editrice:
Betascript Publishing
Sito Web:
https://www.betascript-publishing.com/
A cura di:
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
Numero di pagine:
104
Pubblicato il:
06.09.2010
Giacenza di magazzino:
Disponibile
categoria:
Informatica
Prezzo:
39,00 €
Parole chiave:
Block Cipher, Feistel Cipher, Blowfish (cipher)

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