Paper accepted at SECRYPT 2021

Published: May 17, 2021
The following paper has been accepted at the 18th International Conference on Security and Cryptography (SECRYPT 2021):
  • Title: Cryptographic Enforcement of Access Control Policies in the Cloud: Implementation and Experimental Assessment
  • Author: Stefano Berlato, Roberto Carbone, Silvio Ranise
  • Abstract: While organisations move their infrastructure to the cloud, honest but curious Cloud Service Providers (CSPs) threaten the confidentiality of cloud-hosted data. In this context, many researchers proposed Cryptographic Access Control (CAC) schemes to support data sharing among users while preventing CSPs from accessing sensitive data. However, the majority of these schemes focuses on high-level features only and cannot adapt to the multiple requirements arising in different scenarios. Moreover, (almost) no CAC scheme implementation is available for enforcement of authorisation policies in the cloud, and performance evaluation is often over- looked. To fill this gap, we propose the toolchain COERCIVE, short for CryptOgraphy killEd (the honest but) cuRious Cloud servIce proVidEr, which is composed of two tools: TradeOffBoard and CryptoAC. TradeOff- Board assists organisations in identifying the optimal CAC architecture for their scenario. CryptoAC enforces authorisation policies in the cloud by deploying the architecture selected with TradeOffBoard. In this paper, we describe the implementation of CryptoAC and conduct a thorough performance evaluation to demonstrate its scalability and efficiency with synthetic benchmarks.
  • Complementary Material: Link

About the conference

  • Name: 18th International Conference on Security and Cryptography (SECRYPT 2021)
  • Date: from July 06, 2021 to July 08, 2021
  • Location: Virtual Event
  • Website:

Involved People

Berlato Stefano

Stefano Berlato

Carbone Roberto

Roberto Carbone

Ranise Silvio

Silvio Ranise