Programmable logic device enabling configuration data flows to be high in safety

Abstract

The invention belongs to the technical field of programmable logic devices, and particularly relates to a programmable logic device enabling configuration data flows to be high in safety. The programmable logic device comprises a programmable logic array based on an SRAM configuration layer, a non-volatile scratchpad memory, a security mechanism control circuit, a configuration control circuit, an interface module and other modules; the non-volatile scratchpad memory can comprise multiple partitions for storing different data, such as configuration data, secret keys and authentication tags, the non-volatile scratchpad memory further comprises a write-protect circuit, and the write-protect circuit can provide different write-protect control strategies according to the different partitions on the non-volatile scratchpad memory; the non-volatile scratchpad memory specially comprises a resistance type random access memory and other non-volatile memories capable of being compatible with logic processes. The programmable logic device enabling the configuration data flows to be high in safety can prevent the configuration data flows from being stolen and loaded maliciously and enable the configuration data flows to have other security features in the storage and transmitting processes.

Description

technical field [0001] The invention belongs to the technical field of programmable logic devices, and in particular relates to a programmable logic device including an on-chip non-volatile memory to improve the security of configuration data streams. Background technique [0002] Programmable Logic Device (PLD), including Field Programmable Gate Array (Field Programmable Gate Array, FPGA) and Complex Programmable Logic Device (Complex Programmable Logic Device, CPLD), is a well-known electronic information device. It can realize any digital circuit function. The designer only needs to compile the design into a configuration data flow after simulation verification, and then load the configuration data flow to the programmable logic device, and the design can be realized quickly without modifying the hardware. plan. With more and more application of programmable logic logic in key fields, the security problem of the system based on programmable logic logic becomes serious. ...

AI Technical Summary

Problems solved by technology

However, the Flash process is complicated, and the compatibility with the logic part of the FPGA is poor, and the manufacturing cost is greatly increased.

Antifuse is a one-time programming memory, which cannot perform multiple configuration updates. In addition, the one-time programming of Antifuse makes it difficult to perform manufacturing tests to detect all possible faults, resulting in a decline in yield after programming

Moreover, in these programmable logic devices based on non-volatile configuration layers such as Flash and Antifuse, the decrypted data is directly stored on the Flash and Antifuse of each configuration point, so there is a risk of direct intrusive physical attacks against these NVMs , such as using reverse engineering to directly dissect non-volatile storage points inside hive

Images