Data Encryption transfer device, data decryption transfer device, data encryption transfer method and data decoding transfer method

摘要

PROBLEM TO BE SOLVED: To perform encryption and decryption of data for each channel by identifying the channel through which data is transferred, even when the data size to be the unit of data transfer is different from the data size to be the unit of encryption processing.;SOLUTION: An encryption processing section 150 acquires a descriptor 2 containing a DMA number for identifying a DMA channel, through which data is transferred, stores data transferred by the data size unit specified by PCIe by using the same DMA channel, on the basis of the DMA number contained in the acquired descriptor 2, encrypts the stored data by the data size unit specified by an AES encryption method, and transfers the encrypted data to a disk interface control section 160.;COPYRIGHT: (C)2008,JPO&INPIT