Methods and apparatus for data hashing based on non-linear operations
US8832450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | May 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0643
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus that provides a hard problem based hashing mechanism to improve security of hash functions are described. The hashing mechanism can include a custom padding and/or a post processing to a hashed value strengthened via operations specifying a hard problem. In one embodiment, a new hash function may be provided or defined directly without introducing or relying on existing hash functions to embed security features based on this hard problem. The new hash functions can be used in usual constructions implying hash functions. For example, the standard HMAC construction could be applied on these hash functions, standard signature algorithms or authentication protocol, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.