DATA TRANSFER DEVICE

摘要

A data transfer device capable of transferring data without break even when an error has occurred in key updating. The data transfer device (100) includes a transmitter (1) for creating a plurality of encrypted data by encrypting the same data by using different keys and a receiver (6) for receiving the plurality of encrypted data from the transmitter and decrypting the plurality of encrypted data. The receiver has a selector section (10) for selecting one of the decrypted data and switching the decrypted data selected by a switching signal and an error detection circuit (12) for detecting presence/absence of an error in the decrypted data selected by the selector section and generates a switching signal when an error is detected.