Multiple hashing in a cryptographic scheme
US8995656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3236
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer programs for producing hash values are disclosed. A first hash value is obtained by applying a first hash function to a first input. The first input can be based on an implicit certificate, a message to be signed, a message to be verified, or other suitable information. A second hash value is obtained by applying a second hash function to a second input. The second input is based on the first hash value. The second hash value is used in a cryptographic scheme. In some instances, a public key or a private key is generated based on the second hash value. In some instances, a digital signature is generated based on the second hash value, or a digital signature is verified based on the second hash value, as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.