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Dynamic token encryption for preventing permission leakage in serverless architectures.

Yu Liu1, Fu Li1,2, Chenhao Sun3

  • 1School of Computer Science, National University of Defense Technology, Changsha, Hunan, China.

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This study introduces a dynamic token-based access control for serverless applications, enhancing security against permission and key leakage risks in dynamic environments.

Keywords:
Access controlData protectionDynamic tokensFine-grained access controlServerless computing

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Area of Science:

  • Computer Science
  • Cybersecurity
  • Software Engineering

Background:

  • Serverless architectures offer development simplicity but face security challenges due to static permission models in dynamic runtime environments.
  • Existing models are vulnerable to permission and key leakage, hindering secure adoption in complex scenarios.

Purpose of the Study:

  • To propose a novel runtime dynamic token-based access control scheme for serverless applications.
  • To enhance security by addressing the limitations of static execution roles in dynamic environments.

Main Methods:

  • Developed a scheme combining function context and user-defined rules for dynamic authorization and authentication.
  • Generated one-time use dynamic tokens with randomness and unpredictability.
  • Implemented a multi-factor token verification model integrating dynamic factors like call chain and behavior patterns.

Main Results:

  • The proposed scheme significantly enhances serverless application security.
  • Effectively reduces risks associated with token leakage.
  • Maintains controllable impact on platform performance, validated through experiments and analysis.

Conclusions:

  • The dynamic token-based scheme offers a robust solution for serverless security.
  • Enriches theoretical knowledge and provides practical insights for development.
  • Expected to facilitate serverless adoption in enterprise-level scenarios and foster ecosystem growth.