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Dynamic resource sharing

A resource and function block technology, applied in the direction of program startup/switching, inter-program communication, multi-programming device, etc., can solve problems such as inefficiency and limited scope

Active Publication Date: 2014-09-03
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technique may limit the scope of applications and / or use cases designed for and may be inefficient

Method used

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Examples

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Embodiment Construction

[0022] overview

[0023] Representative implementations of the devices and techniques provide dynamic secure sharing of resources by non-secure and secure applications without requiring duplicative hardware and the attendant increased die size and power consumption. In one example, resource modules can be divided into functional blocks that can be assigned to non-safety applications and safety applications. In one implementation, some functional blocks from resource modules can be assigned to non-safety applications and other functional blocks from resource modules can be assigned to secure applications concurrently without data leakage or disruption of one or more secure applications security.

[0024] In one implementation, a security monitor can monitor processor activity and determine when a secure resource can be accessed based on requests for the secure resource by applications executing on the processor. For example, a security monitor may output a security mode sig...

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PUM

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Abstract

Disclosed is dynamic resource sharing. Representative implementations of devices and techniques provide dynamic secure sharing of resources. A resource module can be partitioned into a plurality of functional blocks, which may be allocated to non-secure and secure applications. A security monitor can monitor processor activity and determine when secure resources may be accessed.

Description

Background technique [0001] Piracy of intellectual property (IP) and other forms of potentially harmful activity are major concerns in many operational or computing environments. Typically, microcontrollers do not provide a trusted execution environment for executing proprietary or secure routines, eg, due to the configuration of the hardware. For example, the architecture of hardware may be based more on economical design considerations, especially when the hardware is to be deployed in industrial applications. This can be problematic when considering the potentially exposed environments in which such microcontrollers may operate. Valuable IP assets such as firmware, software, data, etc. may be vulnerable to attack in these situations. [0002] Proposed solutions often involve duplication of resources, which may include additional hardware components or systems. For example, a system-on-chip (SoC) may include additional "secure" components on a chip (eg, for digital rights...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/48G06F9/54
CPCG06F21/74G06F21/44
Inventor P.巴拉苏布拉马尼安
Owner INFINEON TECH AG