Cloud data safe deleting system and method without support of trusted third party

Abstract

The invention discloses a cloud data safe deleting system and method without the support of a trusted third part. The system comprises a distributed hash table network, a user side and a cloud. The distributed hash table network is used for storing decryption key fragments. The user side is used for encrypting and decrypting files and deleting key information and comprises a file encryption module, a file decryption module, a key distribution and reorganization module, a local key information module and a file deletion module. The file encryption module and the file decryption module are used for encrypting and decrypting the files respectively; the key distribution and reorganization module is used for fragmenting and reorganizing keys; the local key information module is used for storing relevant key information; the file deletion module is used for deleting the key information. The cloud is provided with a data server and a key management server and used for storing data ciphertext information and key information and comprises the data server and the key management server, wherein the data server is used for storing file ciphertexts, and the key management server is used for managing key relevant information. The cloud data safe deleting system and method can be used for a cloud storage environment to protect data privacy of the user side.

Description

Technical field [0001] The invention belongs to the field of cloud storage data security, and specifically relates to a cloud data security deletion system and method without the support of a trusted third party. Background technique [0002] While cloud storage services bring convenience, they also cause widespread concerns about security on the client side. The ever-increasing dependence on network services on the client side causes personal data to be cached by a third party without the client’s knowledge or control. , Copying and archiving, people need to make sure that they do not put corporate data or any personal private information or other confidential information at risk. The inability of users to fully trust cloud service providers has become the most important obstacle to the popularization of cloud storage. Especially with the popularization of online computing such as random cloud computing, user-side data privacy protection is becoming an important challenge. When...

AI Technical Summary

Problems solved by technology

However, SafeVanish cannot avoid jump attacks and sniffing attacks. All it does is increase the cost of hackers collecting keys or attacks, and it does not fundamentally solve the key security and data security issues.

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