Cryptology ePrint Archive: Report 2012/449
Long Term Confidentiality: a Survey
Johannes Braun and Johannes Buchmann and Ciaran Mullan and Alex Wiesmaier
Abstract: Sensitive electronic data may be required to remain confidential for long periods of time. Yet encryption under a computationally secure cryptosystem cannot provide a guarantee of long term confidentiality, due to potential advances in computing power or cryptanalysis. Long term confidentiality is ensured by information theoretically secure ciphers, but at the expense of impractical key agreement and key management. We overview known methods to alleviate these problems, whilst retaining some form of information theoretic security relevant for long term confidentiality.
Category / Keywords: long term confidentiality, information theoretic security, perfect secrecy, everlasting security
Publication Info: The nal publication is available at www.springerlink.com (DOI : 10.1007/s10623-012-9747-6)
Date: received 6 Aug 2012, last revised 13 Sep 2012
Contact author: jbraun at cdc informatik tu-darmstadt de
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Note: Update to final version.
Version: 20120913:155343 (All versions of this report)
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