Invariance based concurrent error detection for the advanced encryption standard
US8005209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2006 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Mar 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0631
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Advanced Encryption Standard (AES) is an encryption algorithm for securing sensitive unclassified material by U.S. Government agencies and, as a consequence the de facto encryption standard for commercial applications worldwide. Performing concurrent error detection (CED) for protection of such a widely deployed algorithm is an issue of paramount importance. We present a low-cost CED method for AES. In this method, we make use of invariance properties of AES to detect errors. For the first time, the invariance properties of the AES, which are for the most part used to attack the algorithm, are being used to protect it from fault attacks. Our preliminary ASIC synthesis of this architecture resulted in an area overhead of 13.8% and a throughput degradation of 16.67%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.