Cloud Security.pdf

Cloud computing security concerns are addressed through a semi-anonymous advantage control scheme called AnonyControl, which decentralizes the central authority to restrict identity revelation and ensures semi-anonymity. AnonyControl-F is also presented, which completely prevents identity leakage and achieves full anonymity. The scheme integrates report access control with occasion control, allowing all procedures on cloud data to be controlled in a restricted manner.

Key features of AnonyControl and AnonyControl-F include:

Decentralized central authority to restrict identity revelation
Semi-anonymity and full anonymity
Integration of report access control with occasion control
Secure under the decisional bilinear Diffie-Hellman assumption

Existing systems, such as Identity-Based Encryption (IBE) and Attribute-Based Encryption (ABE), have limitations, including:

IBE requires a private key to be issued to each user, which contains their identity
ABE enables decryption if there are 'character covers' exceeding a pre-set edge between the encrypter's and decrypter's identities
* Key Policy Attribute-Based Encryption (KP-ABE) has issues with re-encryption and private key management

AnonyControl and AnonyControl-F address these limitations by providing a secure and efficient access control scheme for cloud computing. The schemes ensure that clients' identities are protected, and only authorized users can access the data.