Data Management

Double Ciphertext Mode : A Proposal for Secure Backup

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Executive Summary

Security of data stored in bulk storage devices like the hard disk has gained a lot of importance in the current days. Among the variety of paradigms which are available for disk encryption, low level disk encryption is well accepted because of the high security guarantees it provides. In this paper the authors view the problem of disk encryption from a different direction. This paper explores the possibility of how one can maintain secure backups of the data, such that loss of a physical device will mean neither loss of the data nor the fact that the data gets revealed to the adversary.

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