Cryptography Reference
In-Depth Information
Fig. 6.6
Parity for State + double parity for S-Box [120, 424]
Fig. 6.7
Parity per byte + double parity for S-Box [34, 120]
so that single faults lead to an odd parity error at the output of the related block. Parity-
based concurrent fault detection is associated with each block, i.e. five parity bits are
used for each S-Box. This detection scheme is capable of detecting all the single faults
occurring in an S-Box. The use of composite field arithmetic for decomposition of
