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cs.IT2013
On the Griesmer Bound for Systematic Codes
Emanuele Bellini
We generalize the Griesmer bound in the case of systematic codes over a field of size q greater than the distance d of the code. We also generalize the Griesmer bound in the case o…
cs.IT2013
An Extension of Cook's Elastic Cipher
Emanuele Bellini, Guglielmo Morgari, Marco Coppola
Given a block cipher of length L Cook's elastic cipher allows to encrypt messages of variable length from L to 2L. Given some conditions on the key schedule, Cook's elastic cipher…