Patent ID: 8719902

Claim:
A secure communication apparatus comprising: a communicator that transmits and receives a communication packet; a network protocol processor that performs network protocol first half processing and network protocol second half processing for a current packet and a next packet; an encryption/decryption authentication processor that performs at least one of encryption processing, decryption processing and authentication processing for the current packet and the next packet for which the network protocol first half processing was performed, and the network protocol second half processing was not performed; and an encryption/decryption authentication processing controller that acquires a processing result of the current packet for which one of the encryption processing, the decryption processing and the authentication processing has been finished, and controls the network protocol processor to continuously perform the network protocol second half processing of the packet for which the processing result was acquired, and the network protocol first half processing of a next packet, a layer for which the network protocol first half processing is performed being different from a layer for which the network protocol second half processing is performed.