DECODING AND ERROR CORRECTION METHOD

摘要

The invention concerns a decoding and error correction method applicable to a secure code word (X3) liable to contain an error with respect to an initial secure code word (X2), comprising an error correction step and a decoding step involving a decoding function (A-1). The invention is characterized in that the decoding step is carried out before the error correction step and comprises applying the decoding function (A-1) to the secure coded word (X3), to obtain a secure decoded word (X4') containing a coded error (E*A-1). The invention reduces decoding and error correction time.