DATA RANDOMIZING CIRCUIT AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide a data randomizing circuit where a processing cycle required only for transposition is not required when randomizing data by transposition and substitution. SOLUTION: The circuit for randomizing the data by transposition conversion and substitution conversion is provided with a data division means for dividing the data, a partial data substitution means for substitute-converting the data, a data combining means for combining the data, and a buffer memory for keeping data temporarily.