• J.Jayalakshmi
• A.Vamsi Krishna
• Dr.B.Sunil kumar

Recent news reveal a powerful attacker which breaks data confidentiality by acquiring cryptographic keys, by means of coercion or backdoors in cryptographic software. Once the encryption key is exposed, the only viable measure to preserve data confidentiality is to limit the attacker’s access to the cipher text. This may be achieved, for example, by spreading cipher text blocks across servers in multiple administrative domains thus assuming that the adversary cannot compromise all of them. Nevertheless, if data is encrypted with existing schemes, an adversary equipped with the encryption key, can still compromise a single server and decrypt the cipher text blocks stored therein. In this project, we implement Bastion, a novel and efficient scheme that guarantees data confidentiality even if the encryption key is leaked and the adversary has access to almost all cipher text blocks. We study data confidentiality against an adversary which knows the encryption key and has access to a large fraction of the cipher text blocks. Bastion achieves data confidentiality by combining the use of standard encryption functions with an efficient linear transform. We examine the security of Bastion and we also evaluate its performance.

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"PROVIDING SECURITY BY USING BASTION ALGORITHM FOR COLLEGE MANAGEMENT SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.1274-1279, July-2018, Available :http://www.jetir.org/papers/JETIRC006219.pdf

"PROVIDING SECURITY BY USING BASTION ALGORITHM FOR COLLEGE MANAGEMENT SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp1274-1279, July-2018, Available at : http://www.jetir.org/papers/JETIRC006219.pdf