Verifying cryptographic signature from stored primitives of previously received signature
US8874920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/72
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments provide systems and methods to optimize signature verification time for a cryptographic cache. Time is reduced by eliminating at least some of the duplicative application of cryptographic primitives. In some embodiments, systems and methods for signature verification comprise obtaining a signature which was previously generated using an asymmetrical cryptographic scheme, and determining whether an identical signature has previously been stored in a signature cache. If an identical signature has been previously stored in the signature cache, retrieving previously generated results corresponding to the previously stored identical signature, the results a consequence of application of cryptographic primitives of the asymmetrical cryptographic scheme corresponding to the identical signature. The results are forwarded to a signature verifier. In at least some embodiments, at least one of these functions occurs in a secure execution environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.