초록 ▼

A system and method for secure purchase and delivery of video content programs over various distribution media, including distribution networks and digital video disks, includes an integrated circuit card (e.g., a smart card, PCMCIA card) which is configured to store decryption capabilities for rela

A system and method for secure purchase and delivery of video content programs over various distribution media, including distribution networks and digital video disks, includes an integrated circuit card (e.g., a smart card, PCMCIA card) which is configured to store decryption capabilities for related video programs. The decryption capabilities are initially kept in a secure store at a video merchant. When a purchaser orders a particular video program, the decryption capabilities for that program are downloaded to the IC card, either at the merchant premises or over a distribution network. The video content program is distributed in encrypted format via the distribution media to the purchaser. The IC card uses the decryption capabilities to at least partly decrypt the video content program without exposing the decryption capabilities.

대표청구항 ▼

[ We claim:] [1.] A video content delivery system comprising:a video content provider;a viewer computing unit located remotely from the video content provider;a distribution medium;a video encryption device at the video content provider to supply a video data stream in encrypted format on the distri

[ We claim:] [1.] A video content delivery system comprising:a video content provider;a viewer computing unit located remotely from the video content provider;a distribution medium;a video encryption device at the video content provider to supply a video data stream in encrypted format on the distribution medium, the video encryption device encrypting the video data stream using a cryptographic program key; andan integrated circuit card compatibly couplable to, and interactive with, the viewer computing unit, the integrated circuit card having a memory to store an encrypted cryptographic program key, the integrated circuit card being configured to decrypt the encrypted cryptographic program key with decryption capabilities that are unique to the integrated circuit card, and to at least partly decrypt the video data stream on the distribution medium using the cryptographic program key.