Aggregate signature schemes
US8185744B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Dec 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a portion of the RFID tag that contains sensitive product identifying information. As a result, smaller tags can be used or multiple signatures can be written at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature schemes are also provided for adding multiple signatures to the RFID tags, for example in a supply chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.