Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
1999-03-26
2001-04-24
Hua, Ly V. (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S152000
Reexamination Certificate
active
06223291
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to secure electronic commerce distribution and sales having the ability to offer software enhancements and new features in a simpler, faster, and cheaper method than previously available. Secure electronic commerce brings together three important functions: reprogrammable software or other content (generically referred to also as “product”, which includes services); wireless data service; and security (encryption & authentication).
BACKGROUND OF THE INVENTION
Secure electronic commerce offers a way for customers to add or change features in their phone using the convenience of the wireless data service already available in the phone. Moreover, the customer can achieve these goals within minutes and in the comfort of the customer's home or business.
Secure electronic commerce offers many advantages, among them: greater ease of distribution, sale and revenue collection for software-only features; flexible and upgradeable phone platform - this reduces obsolescence; ability to thwart theft of services and cloning; reduced warranty costs in case of software patch updates; and convenience of wireless reprogramming.
SUMMARY OF THE INVENTION
In one aspect, the present invention provides a wireless electronic commerce system comprising a wireless gateway to a wireless network with which a wireless client having a unique client identifier is capable of communicating and at least one server coupleable to the wireless gateway, delivering content items to the wireless device and maintaining digital content certificates for content items and digital license certificates for licenses for the content items. The server maintains, for each wireless client associated with the system, a record of licenses for that client and a record of content items associated with each license.
This record maintained at the server can be used for content item license verification as will be described and is particularly advantageous for repair and recovery as will be described.
In another aspect of the invention, a content item is delivered to a wireless device. The content item is verified with the server. A license associated with the content item is verified and the content item is enabled at the wireless client when the content item and license are verified. A particularly useful (but not essential) feature is that rules can establish that a new license certificate is not required for every new content item.
Glossary of Abbreviations
AA
Attribute Authority
API
Application Programming Interface
CA
Certification Authority
DER
Distinguished Encoding Rules (ASN.1)
EC
Elliptic Curve
GSM
Global System for Mobile Communication
ID
Identifier
ME
Mobile Equipment
PER
Packed Encoding Rules (ASN.1)
PIN
Personal Identification Number
PK
Public Key
PKI
Public Key Infrastructure
RA
Registration Authority
RSA
RSA (Rivest, Shamir, Adleman) public key algorithm
SHA-1
Secure Hash Algorithm 1
SIM
Subscriber Identity Module
SMS
Short Message Service
WAP
Wireless Application Protocol
WIM
Wireless Identity Module
WML
Wireless Markup Language
WML Script
Wireless Markup LanguageScript
WDP
Wireless Datagram Protocol
WTLS
Wireless Transport Layer Security
REFERENCES:
patent: 5138712 (1992-08-01), Corbin
patent: 5260999 (1993-11-01), Wyman
patent: 5579222 (1996-11-01), Bains et al.
patent: 5671412 (1997-09-01), Christiano
patent: 5758069 (1998-05-01), Olsen
patent: 5758088 (1998-05-01), Bezaire et al.
Dabbish Ezzat A.
Puhl Larry C.
Vogler Dean H.
Bose Romi N.
Dunlop Hugh C.
Hua Ly V.
Motorola Inc.
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