Pre-Grant Publication Number: 20070136608
Filing Date: December 06, 2020
Inventors: Darko Kirovski, Kamal Jain
Assignee(s): Microsoft Corporation
Current U.S. Classification: 713, 713/193000
View Prior Art for Claim 00003
The method as recited in Claim 1, wherein the off-line transaction comprises using a cryptographically secure sales transaction protocol, including: sending a cryptographically secure purchase request from the second media playback device to the first media playback device; sending a cryptographically secure transaction receipt from the first media playback device to the second media playback device; and sending a receipt acknowledgement from the second media playback device to the first media playback device. Title EB1546 Identification Card System--Inter-Sector Electronic Purse
ISBN
Description
European standard for elctronic payment transactions
