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

摘要

A cryptographic device (100) is presented that is designed to compute a target block cipher (bt) in an input message (110),Where the device comprises a first and second block cipher units (121, 122) arranged in order to compute the target block cipher (bt) in the input message,And a first control unit (130) set up to take the first result of the block cipher and the second result of the block cipher as input,And to produce the first result of the block cipher only if the results of the block cipher are equal.