| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an encryption processing device which reduces a data transfer frequency compared to conventional ones, and accelerates parallel processing of decryption processing and authentication processing. <P>SOLUTION: An encryption processing device comprises: decryption processing means 107 for performing decryption processing; authentication processing means 108 for performing authentication processing; and input/output data processing means 106 for processing input/output data to/from the decryption processing means and the authentication processing means. The input/output processing means 106 comprises: parameter calculation means 1062 for calculating a parameter to be used in the authentication processing means 108 from input data to the input/output data processing means 106; and input/output data formation means 1063 for forming input data to the authentication processing means 108 from the parameter calculated by the parameter calculation means 1062 or a parameter calculated from data processed by the decryption processing means 107 and input data to the input/output data processing means 106. <P>COPYRIGHT: (C)2013,JPO&INPIT |
