Multimedia player toolkit for electronic content delivery

Patent 7206748 Issued on April 17, 2007. Estimated Expiration Date:

December 10, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Assignee

International Business Machines Corporation

Application

No. 09209440 filed on 12/10/1998

US Classes:

705/1, AUTOMATED ELECTRICAL FINANCIAL OR BUSINESS PRACTICE OR MANAGEMENT ARRANGEMENT380/29, NBS/DES algorithm380/30, Public key380/45, Multiple key level380/277, KEY MANAGEMENT380/278, Key distribution380/279, Key distribution center380/281, Using master key (e.g., key-encrypting-key)380/282, By public key method380/283, User-to-user key distributed over data link (i.e., no center)380/284, Using master key (e.g., key-encrypting-key)380/285, By public key method705/26, Electronic shopping (e.g., remote ordering)707/9, Privileged access382/118, Using a facial characteristic705/18Having security or user identification provision (password entry, etc.)

Examiners

Primary: Nguyen, Gary

Attorney, Agent or Firm

Foreign Patent References

WO 97/43717 WO 11/01/1997
WO 98/13970 WO 04/01/1998

International Class

G06Q 40/00

Abstract

A method provides a collection of data structures and subroutines in a software toolkit, for developing an application for playing digital content data. The method comprises steps of receiving previously encrypted content data encrypted with an encrypted key from an external source; storing the previously encrypted content data in a library; selecting one or more encrypted content data from the library to play; and decrypting each content data selected to be played with its unique encryption key, wherein the decrypting is performed in a tamper-resistant subroutine for deterring unauthorized access to the instructions for decrypting the content data and for deterring unauthorized access to the encryption key.

Other References

J. Linn, “Privacy Enhancement for Internet Electronic Mail: Part I: Message Encryption and Authentication Procedures”, RFC 1421, Feb. 1993, pp. 1-37.
S. Kent, “Privacy Enhancement or Internet Electronic Mail: Part II: Certificate-Based Key Management”. RFC 1422, Feb. 1993, pp. 1-28.
D. Balenson, “Privace Enhancement for Internet Electronic Mail: Part III: Algorithms, Modes, and Indentifiers”, RFC 1423, Feb. 1993, pp. 1-13.
B. Kaliski, “Privacy Enhancement for Internet Electronic Mail: Part IV: Key Certification and Related Services”, RFC 1424, Feb. 1993, pp. 1-8.