Brief description of the other hand, - measurement in an electronic component using a key cryptography algorithm to secret

摘要

In an electronic component, using a cryptographic algorithm secret key k, whose implementation comprising several revolutions of the successive computations t1, t16, in order to deliver from the first input data l0, r0 applied to the first turn t1, the final data l16, r16 at the output of the last turn, t16, is applied a first random value u to the calculation means provided in each revolution (tcm) in order to obtain at the output of the data being impredictable (is + u). According to the invention is applied to a random value v to the first input data l0 and r0 applied to the input of the first turn t1.