Secure conditional access and digital rights management in a multimedia processor

摘要

Methods and systems for processing video data are disclosed herein and may comprise receiving within a single mobile multimedia processor chip integrated within a mobile device, a secure key from an off-chip device integrated within the mobile device. The secure key may be decrypted within the single mobile multimedia processor chip, utilizing an on-chip key. The decrypted secure key may be stored within the single mobile multimedia processor chip. The received encrypted data may be decrypted within the single mobile multimedia processor chip, using the stored, decrypted secure key. The on-chip key may be stored within a one-time programmable (OTP) memory in the single mobile multimedia processor chip. The stored on-chip key may be retrieved from the OTP memory for the decrypting. The stored decrypted received secure key may be encrypted utilizing the on-chip key stored within the single mobile multimedia processor chip.

主权项

1. A method for processing data, the method comprising:
receiving within a single mobile multimedia processor chip integrated within a mobile device, a secure key from an off-chip device integrated within said mobile device; decrypting within said single mobile multimedia processor chip, said secure key utilizing an on-chip key; storing said decrypted secure key within said single mobile multimedia processor chip; decrypting within said single mobile multimedia processor chip, received encrypted data using said stored decrypted secure key; and encrypting said stored decrypted secure key utilizing said on-chip key stored within said single mobile multimedia processor chip.