DATA ENCRYPTION APPARATUS AND METHOD, COMPUTING DEVICE AND COMMUNICATION DEVICE EMPLOYING THE SAME

摘要

The present invention relates to a device and a method for data encryption, and a computing device and a communication device using the same. The data encryption device according to an embodiment of the present invention includes: a storage unit storing a main encryption key group consisting of main encryption keys, and an auxiliary encryption key group consisting of auxiliary encryption keys; and a control unit generating intermediary data by using index data having a pre-set bit length and the main encryption key selected in the main encryption key group based on the index data, selecting at least one of the auxiliary encryption keys in the auxiliary encryption key group based on the intermediary data, generating XOR operand data by using the selected auxiliary encryption key, the intermediary data, and the index data, and encrypting original data by performing an XOR operation on the original data and the XOR operand data.