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- Crab_(cipher) abstract "In cryptography, Crab is a block cipher proposed by Burt Kaliski and Matt Robshaw at the first Fast Software Encryption workshop in 1993. Not really intended for use, Crab was developed to demonstrate how ideas from hash functions could be used to create a fast cipher.Crab has an unusually large block size of 8192 bits. Its creators suggested using an 80-bit key, but the cipher could use any key size. The authors didn't specify an actual key schedule, only that the key is used to generate two large sets of subkeys: a permutation of the numbers 0 through 255, and an array of 2048 32-bit numbers. The block is divided into 256 32-bit subblocks, which are permuted at the beginning. Then the algorithm makes four passes over the data, each time applying one of four transformations adapted from MD5.A brief note on the cryptanalysis of Crab is included in Markku-Juhani Saarinen's paper on block ciphers based on SHA-1 and MD5, published at FSE 2003. The author demonstrates a weakness in Crab that permits a distinguisher using no more than a dozen chosen plaintexts, and speculates that this can be converted into a full key-recovery attack using no more than 216 chosen plaintexts. Such an attack would depend on the key schedule used.".
- Crab_(cipher) wikiPageExternalLink 28870038.pdf.
- Crab_(cipher) wikiPageID "7866313".
- Crab_(cipher) wikiPageLength "3028".
- Crab_(cipher) wikiPageOutDegree "24".
- Crab_(cipher) wikiPageRevisionID "657331376".
- Crab_(cipher) wikiPageWikiLink Block_cipher.
- Crab_(cipher) wikiPageWikiLink Block_size_(cryptography).
- Crab_(cipher) wikiPageWikiLink Burt_Kaliski.
- Crab_(cipher) wikiPageWikiLink Cambridge.
- Crab_(cipher) wikiPageWikiLink Category:Broken_block_ciphers.
- Crab_(cipher) wikiPageWikiLink Chosen-plaintext_attack.
- Crab_(cipher) wikiPageWikiLink Cryptographic_hash_function.
- Crab_(cipher) wikiPageWikiLink Cryptography.
- Crab_(cipher) wikiPageWikiLink Differential_cryptanalysis.
- Crab_(cipher) wikiPageWikiLink Fast_Software_Encryption.
- Crab_(cipher) wikiPageWikiLink John_Wiley_&_Sons.
- Crab_(cipher) wikiPageWikiLink Key_schedule.
- Crab_(cipher) wikiPageWikiLink Key_size.
- Crab_(cipher) wikiPageWikiLink MD5.
- Crab_(cipher) wikiPageWikiLink Matt_Robshaw.
- Crab_(cipher) wikiPageWikiLink SHA-1.
- Crab_(cipher) wikiPageWikiLink SHACAL.
- Crab_(cipher) wikiPageWikiLink Springer_Science+Business_Media.
- Crab_(cipher) wikiPageWikiLinkText "Crab (cipher)".
- Crab_(cipher) wikiPageWikiLinkText "Crab".
- Crab_(cipher) blockSize "8192".
- Crab_(cipher) cryptanalysis "Proposed differential cryptanalysis using no more than 216 chosen plaintexts".
- Crab_(cipher) derivedFrom MD5.
- Crab_(cipher) designers Burt_Kaliski.
- Crab_(cipher) designers Matt_Robshaw.
- Crab_(cipher) keySize "80".
- Crab_(cipher) name "Crab".
- Crab_(cipher) publishDate "1993".
- Crab_(cipher) relatedTo SHACAL.
- Crab_(cipher) structure Cryptographic_hash_function.
- Crab_(cipher) wikiPageUsesTemplate Template:About.
- Crab_(cipher) wikiPageUsesTemplate Template:Cite_book.
- Crab_(cipher) wikiPageUsesTemplate Template:Cite_conference.
- Crab_(cipher) wikiPageUsesTemplate Template:Crypto-stub.
- Crab_(cipher) wikiPageUsesTemplate Template:Cryptography_navbox.
- Crab_(cipher) wikiPageUsesTemplate Template:Infobox_block_cipher.
- Crab_(cipher) wikiPageUsesTemplate Template:No_footnotes.
- Crab_(cipher) wikiPageUsesTemplate Template:US_patent.
- Crab_(cipher) subject Category:Broken_block_ciphers.
- Crab_(cipher) hypernym Cipher.
- Crab_(cipher) type Noble.
- Crab_(cipher) type Algorithm.
- Crab_(cipher) comment "In cryptography, Crab is a block cipher proposed by Burt Kaliski and Matt Robshaw at the first Fast Software Encryption workshop in 1993. Not really intended for use, Crab was developed to demonstrate how ideas from hash functions could be used to create a fast cipher.Crab has an unusually large block size of 8192 bits. Its creators suggested using an 80-bit key, but the cipher could use any key size.".
- Crab_(cipher) label "Crab (cipher)".
- Crab_(cipher) sameAs Q3696410.
- Crab_(cipher) sameAs Crab_(cifrario).
- Crab_(cipher) sameAs m.026gtjm.
- Crab_(cipher) sameAs Q3696410.
- Crab_(cipher) wasDerivedFrom Crab_(cipher)?oldid=657331376.
- Crab_(cipher) isPrimaryTopicOf Crab_(cipher).