Secure-ic Sas

Théophile Boue

Sylvain Guilley

Margaux Dugardin

Brice Moreau

Yannick Le Provost

A block cipher encryption device for encrypting a data unit plaintext into blocks of ciphertexts, the data unit plaintext being assigned a tweak value and being divided into one or more plaintext blocks. The block cipher encryption device comprises: a combinatorial function unit associated with each plaintext block, the combinatorial function unit being configured to determine a tweak block value by applying a combinatorial function between a value derived from the tweak value and a function of a block index assigned to the plaintext block, a first masking unit in association with each plaintext block, the first masking unit being configured to determine a masked value by applying a data masking algorithm to the tweak block value determined by the combinatorial function unit associated with the plaintext block.

Tweakable block ciphers for secure data encryption

Devices, methods, and computer program products for detecting Points Of Failures in an integrated circuit (IC) are provided. The integrated circuit device is described by a structural description () comprising a plurality of elements, the elements representing cells and wires interconnecting the cells, the structural description further comprising portions representing a set of sensitive functional blocks (), each sensitive functional block comprising one or more inputs, at least one sensitive output, and a set of elements interconnected such that the value of the sensitive output is a Boolean function of the input values of the sensitive functional block. The detection device () comprises: The detection device () is configured to detect that said n-tuple represents a Point Of Failure of order n in the integrated circuit (IC) device if the derivative of the Boolean function associated with said sensitive functional block is equal to zero.

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Servon sur Vilaine, France

Théophile Boue