CRYPTOGRAPHIC PROCESSOR, CRYPTOGRAPHIC PROCESSING METHOD AND PROGRAM

摘要

Disclosed is a cryptographic processor that can quickly decode and authenticate SSL or other secure protocol. With the device, a region to be authenticated length acquisition unit (330) in the cryptographic processor (300) first decodes the last block of an encrypted packet to acquire the size of the region to be authenticated (authentication processing parameter). An encryption/decryption and authentication processing control unit (320) sets up the acquired authentication processing parameter in an encryption/decryption and authentication processing unit (340), and the encryption/decryption and authentication processing unit (340) carries out encryption/decryption and authentication processing based on the authentication processing parameter.