Patent ID: 8327147
Filing Date: 2012-12-04
Classification: G06Q,H04L

Abstract:
1. A computer-implemented method for generating an electronic receipt in a communication system providing a public key infrastructure, the step of generating an electronic receipt comprising the following steps: receiving by a second party (A) a request message (RM) from a first party (U), the request message (RM) comprising a transaction request (TR) and a first public key (P electronically signing at least part of the request message (RM) with a public key (P said method further comprising: receiving, at said second party (A), the further public key (P publishing, by said second party (A), said first encryption (E wherein an electronic receipt ( receiving, at said second party (A), a second encryption (E publishing, by said second party (A), said second encryption (E validating user ownership of said electronic receipt by verifying a cryptographic proof that the