Patent ID: 8234504

Claim:
A personal video recording system for encrypting and decrypting data, the system comprising: an encryption/decryption processor integrated within a chip configured to: encrypt within the chip data received from a first device external to the chip utilizing a plurality of keys stored within the chip, and decrypt within the chip encrypted data received from a second device external to the chip utilizing the plurality of keys stored within the chip; and a two channel ATA host adapter integrated within the chip, wherein each channel is configured to support a master and a slave device, the ATA host adaptor adapted configured to: transfer the encrypted data to the second device via an ATA bus external to the chip, receive encrypted data provided by the second device via the ATA bus; and a second bus interface controller integrated within the chip configured to: allow data that is to be encrypted to enter the chip, wherein the data is provided by the first device via a memory bus external to the chip, transfer decrypted data to the first device via the first data bus, and transfer data from the first external device to the second external device bypassing the encryption/decryption processor.