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We present a new low-cost concurrent checking method for the Advanced Encryption Standard (AES) encryption algorithm. In this method, the parity of the 128-bit input is determined and modified step-by-step into the parity of the 128-bit output according to the processing steps of the AES encryption. For the parity-preserving AES steps Shift-Rows and(More)
Deliberate injection of faults into cryptographic devices is an effective cryptanalysis technique against symmetric and asymmetric encryption algorithms. In this paper we will describe parity code based concurrent error detection (CED) approach against such attacks in substitution-permutation network (SPN) symmetric block ciphers [22]. The basic idea(More)
Deliberate injection of faults into cryptographic devices is an effective cryptanalysis technique against symmetric and asymmetric encryption. We will describe a general concurrent error detection (CED) approach against such attacks on symmetric block ciphers using CS-cipher as an example. The proposed CED compares a carefully modified parity of the input(More)
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