cryptographic device arranged to compute a target block cipher in an input message, cryptographic method for computing a target block cipher in an input message, computer program and computer readable media

摘要

A cryptographic device (100) arranged to compute a target block cipher (bt) in an input message (110) is shown, the device comprising first and second block cipher units (121, 122). ) arranged to compute the target block cipher (bt) in the input message, and a first control unit (130) arranged to take the first block cipher result and the second block cipher result as input, and to produce the first block cipher result only if the block cipher results are the same.