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Entropy of Selectively Encrypted Strings
Abstract : A feature that has become desirable for low-power mobile devices with limited computing and energy resources is the ability to select a security configuration in order to create a trade-off between security and other important parameters such as performance and energy consumption. Selective encryption can be used to create this trade-off by only encrypting chosen units of the information. In this paper, we continue the investigation of the confidentiality implications of selective encryption by applying entropy on a generic selective encryption scheme. By using the concept of run-length vector from run-length encoding theory, an expression is derived for entropy of selectively encrypted strings when the number of encrypted substrings, containing one symbol, and the order of the language change.
Cited literature [9 references]
https://hal.inria.fr/hal-01573290
Contributor : Hal Ifip <>
Submitted on : Wednesday, August 9, 2017 - 10:24:14 AM
Last modification on : Wednesday, August 9, 2017 - 10:25:14 AM
Contributor : Hal Ifip <>
Submitted on : Wednesday, August 9, 2017 - 10:24:14 AM
Last modification on : Wednesday, August 9, 2017 - 10:25:14 AM
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Distributed under a Creative Commons Attribution 4.0 International License