Reconfigurable password coprocessor circuit

This invention discloses reconfigurable cipher coprocessor circuit, which contains memory module, control module and reconfigurable cipher process unit. Said reconfigurable cipher coprocessor circuit can realize various different cipher algorithm, making different user or same user selecting different algorithm indifferent time with strong adaptability and expansibility, in case of the cipher algorithm can not be used a new cipher algorithm is designed to replace the original algorithm to obtain higher safety.