Multi-user file sharing scheme in cloud environment

Source: Internet
Author: User
Keywords Cloud computing multi-user file sharing secure cloud storage proxy rekeying

Multi-user file sharing scheme in cloud environment

Wang Zhenghua Han Yu Liu Jichang

With the rapid development of cloud storage technology, More and more users use cloud storage services to transfer local file storage to the cloud to implement file sharing with multiple users. Aiming at the problem of different access rights for multiple users sharing the same file in cloud environment, an efficient multi-user file sharing scheme is proposed. The new scheme is based on ElGamal encryption system and proxy encryption technology, and realizes that the file owner can only add A secret one can enable shared users to access different content goals. Compared with the existing scheme, the advantages of the new scheme are as follows: At the same time, when the Milvensen storage space is guaranteed, the computational amount of the file owner's encryption of the shared file is linearly increasing with the exponential encryption of the file block number; Shared users can decrypt files by just a linear number of exponential decryption operations to access their different file content. The analysis shows that the new scheme is more suitable for the characteristics of cloud computing environment, that is, cloud service provider can provide unlimited computing and storage ability for thin client users.


Multi-user file sharing scheme in cloud environment

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.