Hashing prefix-free values in a signature scheme
US9698993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2014 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3268
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer programs for producing hash values are disclosed. A prefix-free value is obtained based on input data. The prefix-free value can be based on an implicit certificate, a message to be signed, a message to be verified, or other suitable information. A hash value is obtained by applying a hash function to the prefix-free value. The hash value is used in a cryptographic scheme. In some instances, a public key or a private key is generated based on the hash value. In some instances, a digital signature is generated based on the hash value, or a digital signature is verified based on the hash value, as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.