Trusted Execution Environment for Secure Software Build
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Solution Overview
Problem
Software manufacturers face risks of security breaches in third-party cloud computing environments, where highly confidential information such as source code and cryptographic keys can be exposed to malicious actors, leading to potential damage and lack of control over security.
Innovation Solution
Utilizing a trusted execution environment (TEE) to initiate and execute build tasks, creating a hardware-implemented confidential environment that cannot be monitored or accessed by the host operating system, thereby protecting sensitive information during the software build process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If cloud computing environments are used to reduce capital investment, then cost efficiency is improved, but security control and confidentiality protection deteriorate
Solution Approach 1:
The system segments the computing environment into a host environment and an isolated TEE environment. The TEE creates a separate, secure execution space within the cloud infrastructure, allowing confidential computing tasks to be isolated from the untrusted host OS while still utilizing cloud resources.
Solution Approach 2:
The TEE acts as an intermediary layer between the untrusted cloud host and the confidential workloads. It provides a trusted execution boundary that mediates access to sensitive data and operations, preventing the host from compromising security while enabling cloud computing benefits.
2Ease of operation
If traditional build environments are used in cloud, then ease of operation is improved, but information security deteriorates
Solution Approach 1:
The build process is segmented into confidential and non-confidential portions. Sensitive build operations execute within the TEE while less sensitive operations can run outside, allowing selective protection of critical build stages without compromising overall build accessibility.
Solution Approach 2:
Different security levels are applied to different parts of the build environment. The TEE provides enhanced security for specific confidential build tasks while the rest of the build system maintains standard accessibility, creating localized security zones within the build process.
3Ease of operation
If host operating system access is enabled for build tasks, then ease of operation is improved, but security against compromised systems deteriorates
Solution Approach 1:
The TEE creates an intermediary execution environment that allows build tasks to run with necessary privileges while blocking access from potentially malicious host processes. The TEE enforces strict access controls that prevent host OS from reading or modifying confidential build data.
Solution Approach 2:
The system preemptively establishes security boundaries before build tasks execute. By creating the TEE isolation boundary in advance and configuring access controls beforehand, the system prevents malicious actions before they can occur rather than reacting to compromises.
Data Source
AI summary
Use of a trusted execution environment (TEE) as a safe build environment. A build task is initiated in a TEE of a compute instance. The build task generates a first software component.