What does m6 mean?

Definitions for m6

Here are all the possible meanings and translations of the word m6.

Did you actually mean m2 or m3?


  1. 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. The algorithm operates on blocks of 64 bits using a 10-round Feistel network structure. 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 ciphers attacked 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.


  1. The numerical value of m6 in Chaldean Numerology is: 4

  2. The numerical value of m6 in Pythagorean Numerology is: 4

Images & Illustrations of m6

Translations for m6

From our Multilingual Translation Dictionary

Get even more translations for m6 »