Abstract
In order to ensure the confidentiality and secure sharing of speech data, and to solve the problems of slow deployment of attribute encryption systems and fine-grained access control in cloud storage, a speech encryption scheme based on ciphertext policy hierarchical attributes was proposed. First, perform hierarchical processing of the attributes of the speech data to reflect the hierarchical structure and integrate the hierarchical access structure into a single-access structure. Second, use the attribute fast encryption framework to construct the attribute encryption scheme of the speech data, and use the integrated access to the speech data; thus, the structure is encrypted and uploaded to the cloud for storage and sharing. Finally, use the hardness of decisional bilinear Diffie–Hellman (DBDH) assumption to prove that the proposed scheme is secure in the random oracle model. The theoretical security analysis and experimental results show that the proposed scheme can achieve efficient and fine-grained access control and is secure and extensible.
Highlights
With the rapid development of cloud computing and multimedia technology, cloud storage has become one of the most promising application platforms to solve the explosive growth of data sharing [1]
The existing Attribute-based encryption (ABE) scheme cannot be fairly evaluated and compared in terms of security and performance. erefore, in order to ensure data confidentiality and fine-grained access control, scholars proposed a ciphertext-policy attribute-based encryption (CPABE) [2] scheme suitable for cloud storage, in which the ciphertext is associated with the access structure defined by the data owner and the attribute private key is associated with the properties set of the relevant data user. is scheme has become the preferred encryption technology to solve the challenging problem of secure data sharing in cloud storage
Using the faster and more secure type-III pairings, only a few pairings are needed for encryption and decryption, which effectively improves the rate of speech data decryption and does not limit the size of access policy and attribution
Summary
With the rapid development of cloud computing and multimedia technology, cloud storage has become one of the most promising application platforms to solve the explosive growth of data sharing [1]. Attribute-based encryption (ABE) schemes provide a powerful method to achieve cloud data security and finegrained access control. Erefore, in order to ensure data confidentiality and fine-grained access control, scholars proposed a ciphertext-policy attribute-based encryption (CPABE) [2] scheme suitable for cloud storage, in which the ciphertext is associated with the access structure defined by the data owner and the attribute private key is associated with the properties set of the relevant data user. E hierarchical structure can realize fine-grained data access and multilevel hierarchy data file sharing and resist collusion attacks of multiauthority access control in the cloud storage system. Using the faster and more secure type-III pairings, only a few pairings are needed for encryption and decryption, which effectively improves the rate of speech data decryption and does not limit the size of access policy and attribution.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
