System and method for securing data
US8880904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | May 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system and method for making data secure. The inventive system is characterized in that it comprises:—a monotonic counter;—a computational entity;—a physical data medium comprising one or a plurality of data blocks, a first master block comprising the last value recovered from the monotonic counter, an identifier of the last data block written on said medium, a first authentication code guaranteeing the authenticity of the written data block or blocks, a second authentication code calculated from the last written data block, said data being fixed at a neutral value, and a third authentication code guaranteeing the authenticity of the first master block, and a second master block forming a replica of the first master block; and—an authentication key. The invention is used, in particular, to make data secure against playback and sudden interruptions in service in embedded systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.