Purchase transaction system with encrypted transaction information
US9704159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2009 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Aug 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for securing payment card information. A user may present a payment card such as a credit card to point-of-sale equipment. The point-of-sale equipment may use a symmetric key to encrypt payment card information associated with the payment card. The symmetric key may be encrypted at the point-of-sale equipment using the identity-based-encryption (IBE) public key of a purchase transaction processor to produce a key transfer block. The key transfer block and the encrypted payment card information may be conveyed from the point-of-sale equipment to the purchase transaction processor over a communications network. At the purchase transaction processor, an IBE private key may be used to recover the symmetric key from the key transfer block. The symmetric key can be used to decrypt the encrypted payment card information for processing and re-encryption using a key associated with the purchase transaction processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.