A Survey on Confidential Cloud Data under Secure Key Exposure
Journal Title: International Journal of Research and Engineering - Year 2018, Vol 5, Issue 4
Abstract
Latest records display a effective attacker which breaks facts confidentiality with the resource of obtaining cryptographic keys, by using the usage of way of coercion or backdoors in cryptographic software program. As soon as the encryption secrets uncovered, the only possible diploma to maintain information confidentiality is to restrict the attacker’s access to the ciphertext. This can be finished, as an instance, with the resource of spreading ciphertext blocks in the course of servers in a couple of administrative domain names, therefore assuming that the adversary cannot compromise them all. However, if data is encrypted with present schemes, an adversary prepared with the encryption key, can nevertheless compromise an unmarried server and decrypt the ciphertext blocks saved therein. On this paper, we observe records confidentiality in opposition to an adversary which knows the encryption key and has got admission to a massive fraction of the ciphertext blocks. To this quit, we advise Bastion, a singular and green scheme that ensures data confidentiality notwithstanding the reality that the encryption secrets leaked and the adversary has access to nearly all ciphertext blocks. We analyze the security of Bastion, and we examine its standard overall performance via manner of a prototype implementation. We also talk realistic insights with admire to the combination of Bastion in business dispersed garage structures. Our evaluation results endorse that Bastion is well-applicable for integration in existing structures since it incurs less than 5% overhead compared to existing semantically relaxed encryption modes.
Authors and Affiliations
Pooja Vijay Bankar, Yashanjali Sisodiya
Keywords
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