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MESH Designers Nakahara , Rijmen , Preneel , Vandewalle First published 2002 Derived from IDEA Key sizes 128, 192, or 256 bits Block sizes 64, 96, or 128 bits Structure Lai–Massey scheme Rounds 8.5, 10.5, or 12.5 2 rounds can be broken using 128, 161, or 225 known plaintexts
In cryptography, MESH is a block cipher designed in 2002 by Jorge Nakahara, Jr. , Vincent Rijmen , Bart Preneel , and Joos Vandewalle . MESH is based directly on IDEA and uses the same basic operations.
MESH is actually a family of 3 variant ciphers with block sizes of 64, 96, and 128 bits.[1] key size is twice the block size. The number of rounds is 8.5, 10.5, or 12.5, depending on the block size. The algorithm uses a Lai–Massey scheme based on IDEA's, but with a larger round structure, or "MA-box". MESH also has a more complex key schedule than IDEA, intended to prevent weak keys and other insecure patterns in subkeys.
References
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^ The MESH Block Ciphers . Austria. p. 2.
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