Information processing apparatus

An information processing apparatus comprising:

• a plurality of encryption/decryption and message authentication units which are configured to perform AES-CBC encryption/decryption processing and AES-XCBC-MAC-96 message authentication processing by switching therebetween in a predetermined block unit, and to be operable in parallel;
• and
• a data transfer control unit which distributes processing target data associated with an encryption/decryption and message authentication processing request to said plurality of encryption/decryption and message authentication units,
• wherein said data transfer control unit distributes the processing target data so that each of said plurality of encryption/decryption and message authentication units alternately performs the encryption/decryption processing and the message authentication processing in the predetermined block unit for each processing request included in a plurality of processing requests.

An information processing apparatus comprising:

• a plurality of encryption/decryption and message authentication units which are configured to perform AES-CBC encryption/decryption processing and AES-XCBC-MAC-96 message authentication processing by switching therebetween in a predetermined block unit, and to be operable in parallel;
• a data transfer control unit which distributes processing target data associated with an encryption/decryption and message authentication processing request to said plurality of encryption/decryption and message authentication units;
• and
• a switching unit which switches an operation mode of said data transfer control unit in accordance with a circumstance in which the processing request arises,
• wherein said data transfer control unit has two modes:
• a first operation mode in which said data transfer control unit distributes the processing target data so that one of said plurality of encryption/decryption and message authentication units performs the encryption/decryption processing and at least one of the remainder of said plurality of encryption/decryption and message authentication units performs the message authentication processing, and
• a second operation mode in which said data transfer control unit distributes the processing target data so that each of said plurality of encryption/decryption and message authentication units alternately performs the encryption/decryption processing and the message authentication processing in the predetermined block unit.