Method and system for memory attack protection to achieve a secure interface
US8156345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2011 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Oct 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A slave device may receive commands from a host device communicatively coupled to the slave device, via a secure interface configured between the slave device and the host device over that coupling. An integrated memory within the slave device may be configured into a plurality of memory portions or regions based on the received commands. The memory regions may be utilized during operations associated with authentication of subsequent commands from the host device. A first memory region may enable storage of encrypted host commands and data. A second region may enable storage of decrypted host commands and data. A third region may enable storage of internal variables and/or intermediate results from operations performed by the slave device. Another region may comprise internal registers that enable storage of information only accessible to the slave device. Access to some of the memory regions may be controlled and/or restricted by the slave device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.