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What (who) is M8 (cipher) - definition

BLOCK CIPHER

M8 (cipher)

In cryptography, M8 is a block cipher designed by Hitachi in 1999. It is a modification of Hitachi's earlier M6 algorithm, designed for greater security and high performance in both hardware and 32-bit software implementations.

https://en.wikipedia.org/wiki/M8_(cipher)

AN-M8 smoke grenade

AN-M8; AN M8

The AN-M8 HC Smoke Grenade designated as the Army/Navy Model 8 HC Smoke Grenade (AN-M8 Smoke HC) is a US military grenade used as a ground-to-ground obscuring or screening device or a ground-to-air signaling or target-marking device.

https://en.wikipedia.org/wiki/AN-M8_smoke_grenade

XOR cipher

ENCRYPTION BY SIMPLE EXCLUSIVE-OR LOGIC OPERATIONS

Simple XOR Cipher; Simple XOR cipher; XOR encryption; Xor encryption; Xor cipher

In cryptography, the simple XOR cipher is a type of additive cipher, an encryption algorithm that operates according to the principles:

https://en.wikipedia.org/wiki/XOR_cipher

Wikipedia

M8 (cipher)

In cryptography, M8 is a block cipher designed by Hitachi in 1999. It is a modification of Hitachi's earlier M6 algorithm, designed for greater security and high performance in both hardware and 32-bit software implementations. M8 was registered by Hitachi in March 1999 as ISO/IEC 9979-0020.

Like M6, M8 is a Feistel cipher with a block size of 64 bits. The round function can include 32-bit rotations, XORs, and modular addition, making it an early example of an ARX cipher.

The cipher features a variable number of rounds (any positive integer N), each of which has a structure determined by a round-specific "algorithm decision key". Making the rounds key-dependent is intended to make cryptanalysis more difficult (see FROG for a similar design philosophy).

https://en.wikipedia.org/wiki/M8 (cipher)