About: M6 (cipher)

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In cryptography, M6 is a block cipher proposed by Hitachi in 1997 for use in the IEEE 1394 FireWire standard. The design allows some freedom in choosing a few of the cipher's operations, so M6 is considered a family of ciphers. Due to export controls, M6 has not been fully published; nevertheless, a partial description of the algorithm based on a draft standard is given by Kelsey, et al. in their cryptanalysis of this family of ciphers.

Attributes	Values
rdf:type	yago:WikicatBrokenBlockCiphers noble yago:Abstraction100002137 yago:Cipher106254239 yago:Communication100033020 yago:Message106253690 yago:WikicatFeistelCiphers
rdfs:label	M6 (cipher) (en)
rdfs:comment	In cryptography, M6 is a block cipher proposed by Hitachi in 1997 for use in the IEEE 1394 FireWire standard. The design allows some freedom in choosing a few of the cipher's operations, so M6 is considered a family of ciphers. Due to export controls, M6 has not been fully published; nevertheless, a partial description of the algorithm based on a draft standard is given by Kelsey, et al. in their cryptanalysis of this family of ciphers. (en)
name	M6 (en)
dcterms:subject	Broken block ciphers Feistel ciphers
Wikipage page ID	8566626 (xsd:integer)
Wikipage revision ID	1084903257 (xsd:integer)
Link from a Wikipage to another Wikipage	Mod n cryptanalysis M8 (cipher) Cryptography Brute force attack Feistel cipher Key (cryptography) Key schedule Key size Distinguishing attack Broken block ciphers FireWire Hitachi, Ltd. Block cipher Feistel ciphers Slide attack Pseudorandom permutation
sameAs	M6 (cipher) M6 (cipher) M6 (cipher) M6 (cipher)
dbp:wikiPageUsesTemplate	dbt:About dbt:Reflist dbt:Short_description dbt:Cryptography_navbox dbt:Hitachi dbt:Crypto-stub dbt:Infobox_block_cipher
rounds	10 (xsd:integer)
designers	Hitachi, Ltd.
structure	Feistel cipher
has abstract	In cryptography, M6 is a block cipher proposed by Hitachi in 1997 for use in the IEEE 1394 FireWire standard. The design allows some freedom in choosing a few of the cipher's operations, so M6 is considered a family of ciphers. Due to export controls, M6 has not been fully published; nevertheless, a partial description of the algorithm based on a draft standard is given by Kelsey, et al. in their cryptanalysis of this family of ciphers. The algorithm operates on blocks of 64 bits using a 10-round Feistel networkstructure. The key size is 40 bits by default, but can be up to 64 bits. The key schedule is very simple, producing two 32-bit subkeys: the high 32 bits of the key, and the sum mod 232 of this and the low 32 bits. Because its round function is based on rotation and addition, M6 was one of the first ciphersattacked by mod n cryptanalysis. Mod 5, about 100 known plaintexts suffice to distinguish the output from a pseudorandom permutation. Mod 257, information about the secret key itself is revealed. One known plaintext reduces the complexity of a brute force attack to about 235 trial encryptions; "a few dozen" known plaintexts lowers this number to about 231. Due to its simple key schedule, M6 is also vulnerable to a slide attack, which requires more known plaintext but less computation. (en)
block size	64 (xsd:integer)
cryptanalysis	Mod n cryptanalysis: 1 known plaintext allows recovering the key with about 235 trial encryptions; "a few dozen" known plaintexts reduces this to about 231 (en)
derived to	M8 (cipher)
key size	40 (xsd:integer)
publish date	1997 (xsd:integer)
gold:hypernym	Cipher
prov:wasDerivedFrom	wikipedia-en:M6_(cipher)?oldid=1084903257&ns=0
page length (characters) of wiki page	2813 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:M6_(cipher)
is Link from a Wikipage to another Wikipage of	Encryption by date Mod n cryptanalysis M8 (cipher) Index of cryptography articles Digital Transmission Content Protection M6
is derived from of	M8 (cipher)
is foaf:primaryTopic of	wikipedia-en:M6_(cipher)

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