DEVICES FOR COMPUTER-BASED GENERATING OF A MIXING MATRIX FOR CRYPTOGRAPHIC PROCESSING OF DATA, ENCRYPTING DEVICES, METHODS FOR COMPUTER-BASED GENERATING OF A MIXING MATRIX FOR CRYPTOGRAPHIC PROCESSING OF DATA AND ENCRYPTING METHODS

摘要

In an embodiment, a device for computer-based generating of a mixing matrix for cryptographic processing of data may be provided. The device may include: a square matrix determination circuit configured to determine a square matrix with non-zero elements only in one diagonal or sub-diagonal and in one row or column; an exponentiation determination circuit configured to determine an exponentiation of the square matrix as a candidate for a mixing matrix; a criterion determination circuit configured to determine whether the candidate fulfils a pre-determined criterion; and a candidate determination circuit configured to determine the candidate as the mixing matrix if the candidate fulfils a pre-determined criterion.