In cryptography, a Feistel cipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named after the German-born physicist and cryptographer Horst Feistel, who did pioneering research while working for IBM; it is also commonly known as a Feistel network. A large number of block ciphers use the scheme, including the US Data Encryption Standard, the Soviet/Russian GOST and the more recent Blowfish and Twofish ciphers. In a Feistel cipher, encryption and decryption are very similar operations, and both consist of iteratively running a function called a "round function" a fixed number of times.
cryptography, a Feistelcipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named after...
of such ciphers named a Feistel network after Horst Feistel is notably implemented in the DES cipher. Many other realizations of block ciphers, such as...
Feistel is a German surname. Notable people with the surname include: Horst Feistel (1915–1990), German American cryptographer Feistelcipher, a construction...
Both are 3-round generalized (alternating) Feistelciphers, using the hash function and the stream cipher as round functions. BEAR uses the hash function...
Horst Feistel (January 30, 1915 – November 14, 1990) was a German-American cryptographer who worked on the design of ciphers at IBM, initiating research...
the 128-bit full cipher is a Feistel network with an F-function operating on 64-bit halves, while the F-function itself is a Feistel network composed...
one of the slower ciphers submitted. MAGENTA has a block size of 128 bits and key sizes of 128, 192 and 256 bits. It is a Feistelcipher with six or eight...
Jennifer Seberry and Josef Pieprzyk. Like DES, LOKI97 is a 16-round Feistelcipher, and like other AES candidates, has a 128-bit block size and a choice...
1999, and widely distributed on Usenet. It is a five round unbalanced Feistelcipher operating on a 256 bit block with a 160 bit key. The source code shows...
product cipher that uses only substitutions and permutations is called a SP-network. Feistelciphers are an important class of product ciphers. Handbook...
It is not subject to any patents. Like TEA, XTEA is a 64-bit block Feistelcipher with a 128-bit key and a suggested 64 rounds. Several differences from...
cards and DVD-Audio discs. The C2 symmetric key algorithm is a 10-round Feistelcipher. Like DES, it has a key size of 56 bits and a block size of 64 bits...
is a block cipher proposed as an alternative to the Data Encryption Standard (DES), and designed to be much faster in software. The Feistel based algorithm...
better suited to bulk encryption of large amounts of data. Khufu is a Feistelcipher with 16 rounds by default (other multiples of eight between 8 and 64...
evaluation, but was not selected. The cipher uses a 64-bit block and a 64-bit key. Like DES, it is a 16-round Feistelcipher and has a similar general structure...
Global Information