Randomness for encryption operations
US9325642B2 · kind B2 · utility
0Cited by
15References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Nov 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0656
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer programs for generating random values for encryption operations are described. In some examples, information from a message to be encrypted can be used to refresh the state of a pseudorandom generator. In some aspects, a state parameter of the pseudorandom generator is modified based on information in the message. Modifying the state parameter changes the state parameter from a prior state to a refreshed state based on the information in the message. A random output value is obtained by the pseudorandom generator in the refreshed state. The message is encrypted based on the random output value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.