System and method for secure purchase and delivery of video cont

Details System and method for secure purchase and delivery of video cont System and method for secure purchase and delivery of video cont

1996-03-22

2000-04-25

Patel, Harshad

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 10, 380 23, 380 3, H04N 7167, H04L 900, H04K 100

Patent

active

060553146

ABSTRACT:
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.

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