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- LOKI97 abstract "In cryptography, LOKI97 is a block cipher which was a candidate in the Advanced Encryption Standard competition. It is a member of the LOKI family of ciphers, earlier instances being LOKI89 and LOKI91. LOKI97 was designed by Lawrie Brown, assisted by Jennifer Seberry and Josef Pieprzyk.Like DES, LOKI97 is a 16-round Feistel cipher, and like other AES candidates, has a 128-bit block size and a choice of a 128-, 192- or 256-bit key length. It uses 16 rounds of a balanced feistel network to process the input data blocks (see diagram right). The complex round function f incorporates two substitution-permutation layers in each round.The key schedule is also a Feistel structure — an unbalanced one unlike the main network — but using the same F-function.The LOKI97 round function (shown right) uses two columns eachwith multiple copies of two basic S-boxes. These S-boxes aredesigned to be highly non-linear and have a good XOR profile. Thepermutations before and between server to provide auto-keying and todiffuse the S-box outputs as quickly as possible.The authors have stated that, "LOKI97 is a non-proprietary algorithm, available for royalty-free use worldwide as a possible replacementfor the DES or other existing block ciphers." It was intended to be an evolution of the earlier LOKI89 and LOKI91 block ciphers.It was the first published candidate in the Advanced Encryption Standard competition, and was quickly analysed and attacked. An analysis of some problems with the LOKI97 design, which led to its rejection when shortlisting candidates, is given in the paper (Rijmen & Knudsen 1999). It was found to be susceptible to an effective theoretical differential cryptanalysis attack considerably faster than an exhaustive search.".
- LOKI97 thumbnail LOKI97_InfoBox_Diagram.png?width=300.
- LOKI97 wikiPageExternalLink co040409.htm.
- LOKI97 wikiPageExternalLink crypt_crypt.php.
- LOKI97 wikiPageExternalLink loki97b.html.
- LOKI97 wikiPageExternalLink loki97.
- LOKI97 wikiPageExternalLink LOKI97.
- LOKI97 wikiPageID "611984".
- LOKI97 wikiPageRevisionID "542520721".
- LOKI97 blockSize "128".
- LOKI97 caption "The LOKI97 round function".
- LOKI97 cryptanalysis "Linear cryptanalysis against LOKI97, requiring 256 known plaintexts .".
- LOKI97 derivedFrom LOKI.
- LOKI97 designers "Lawrie Brown, assisted by Jennifer Seberry and Josef Pieprzyk".
- LOKI97 hasPhotoCollection LOKI97.
- LOKI97 keySize "128192".
- LOKI97 name "LOKI97".
- LOKI97 publishDate "1998".
- LOKI97 rounds "16".
- LOKI97 structure Feistel_cipher.
- LOKI97 subject Category:Broken_block_ciphers.
- LOKI97 subject Category:Feistel_ciphers.
- LOKI97 comment "In cryptography, LOKI97 is a block cipher which was a candidate in the Advanced Encryption Standard competition. It is a member of the LOKI family of ciphers, earlier instances being LOKI89 and LOKI91. LOKI97 was designed by Lawrie Brown, assisted by Jennifer Seberry and Josef Pieprzyk.Like DES, LOKI97 is a 16-round Feistel cipher, and like other AES candidates, has a 128-bit block size and a choice of a 128-, 192- or 256-bit key length.".
- LOKI97 label "LOKI97".
- LOKI97 label "LOKI97".
- LOKI97 label "LOKI97".
- LOKI97 label "LOKI97".
- LOKI97 sameAs LOKI97.
- LOKI97 sameAs LOKI97.
- LOKI97 sameAs m.02wg5q.
- LOKI97 sameAs Q1648054.
- LOKI97 sameAs Q1648054.
- LOKI97 wasDerivedFrom LOKI97?oldid=542520721.
- LOKI97 depiction LOKI97_InfoBox_Diagram.png.
- LOKI97 isPrimaryTopicOf LOKI97.