Attribute-based encryption (ABE) is an advanced cryptographic paradigm that enables access control over encrypted data based on users’ attributes. In ABE, access to ciphertexts is governed by policies defined over a set of attributes associated with users. Since its introduction in 2007, ABE has gained significant attention, resulting in numerous constructions built upon various computationally hard problems. However, despite these advancements, none of the existing constructions have explored the integration of logic optimization with consensual security assumptions. In this paper, we propose an ABE scheme within the symmetric key framework, designed to enhance efficiency while ensuring strong access control security. Our approach introduces a hierarchical attribute management framework that leverages both an attribute group and an attribute tree, along with an optimization algorithm for logical access functions to enhance computational efficiency. To the best of our knowledge, we are the first to propose an ABE scheme based on consensual security assumptions. By substantially reducing key storage requirements, our scheme enhances scalability and practicality for real-world applications while maintaining robust security guarantees.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Attribute-Based Encryption Using Sum-Product Decomposition of Boolean Functions

  • Arani Raychaudhuri,
  • Ramprasad Sarkar,
  • Mriganka Mandal

摘要

Attribute-based encryption (ABE) is an advanced cryptographic paradigm that enables access control over encrypted data based on users’ attributes. In ABE, access to ciphertexts is governed by policies defined over a set of attributes associated with users. Since its introduction in 2007, ABE has gained significant attention, resulting in numerous constructions built upon various computationally hard problems. However, despite these advancements, none of the existing constructions have explored the integration of logic optimization with consensual security assumptions. In this paper, we propose an ABE scheme within the symmetric key framework, designed to enhance efficiency while ensuring strong access control security. Our approach introduces a hierarchical attribute management framework that leverages both an attribute group and an attribute tree, along with an optimization algorithm for logical access functions to enhance computational efficiency. To the best of our knowledge, we are the first to propose an ABE scheme based on consensual security assumptions. By substantially reducing key storage requirements, our scheme enhances scalability and practicality for real-world applications while maintaining robust security guarantees.