System and method for generating random key stream cipher texts
US9008313B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2014 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jul 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0631
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for generating random key stream cipher texts passes an unencrypted random key stream through an AES engine to produce encrypted cipher text having a first block size in a first frequency domain; converts the encrypted cipher text in the first frequency domain to encrypted cipher text in a second frequency domain; and converts the encrypted cipher text having the first block size in the second frequency domain into smaller block sizes. The frequency in the first frequency domain is preferably lower than the frequency in the second frequency domain. The converting of the encrypted cipher text in the first frequency domain to encrypted cipher text in a second frequency domain may be effected by a dual clock domain FIFO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.