Security implications of selective encryption

Lundin, Reine; Lindskog, Stefan

doi:10.1145/1853919.1853931

Cited by 3 publications

(4 citation statements)

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“…In addition, main works on selective encryption focused on performance issues and not on security issues. That is why, Lundin and Lindskog have evaluated the security impact of the selective encryption by using the entropy and guesswork [11]. In this work, we combine between opposite QoS and security parameters with energy consumption consideration.…”

Section: Related Workmentioning

confidence: 99%

EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

Rachedi¹,

Kaddar²,

Mehaoua

2012

2012 IEEE International Conference on Communications (ICC)

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In this paper we propose a new framework able to ensure security, multimedia quality and energy efficiency in Multimedia Wireless Sensor Networks (MWSNs). The energy is an important and limited resource, which has a direct impact on the lifetime of nodes in MWSNs. In addition, the characteristics of MWSNs like the limited bandwidth and non-deterministic channel access have a significant impact on the QoS of multimedia traffic. We propose the Efficient Dynamic Selective Encryption Framework (EDES) in order to reduce the energy consumption and increase the QoS while ensuring a secure multimedia traffic. EDES proposes three security levels (high, medium and low) and the selection of each level depends on the energy and QoS parameters. Moreover, the cross-layer approach is selected for EDES to take into account the different parameters at physical, MAC and upper layers. The capacity metric is proposed to evaluate the possibility to increase or decrease the security level. The simulation results illustrate the importance of the security level adaptation according to the QoS and the energy parameters. EDES increases the lifetime duration of nodes by almost 40% compared to static encryption.

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Section: Related Workmentioning

confidence: 99%

EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

Rachedi¹,

Kaddar²,

Mehaoua

2012

2012 IEEE International Conference on Communications (ICC)

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“…In [5] it was shown for first-order languages that the entropy is given by the expression H(X 0 ) n−1 i=0 b i . However, since |I| = n−1 i=0 b i , the expressions are equal.…”

Section: Zero-and First-order Languagesmentioning

confidence: 99%

“…Thus, when deriving an expression for H I 2 , the symbol preceding a run of ones must be taken into consideration. In [5], two cases were shown to affect the expression of H I 2 . The first case deals with a run of ones starting at the beginning of the bit vector, i ∈ I 1 = [0, β 1 ), and the second case deals with runs of ones not starting at the beginning of the bit vector, i ∈ I j = [α j , β j ) with α j = 0 and X hj αj −1 .…”

Section: Second-order Languagesmentioning

confidence: 99%

“…Previous work on selective encryption has mainly focused on performance and/or energy saving issues and on making selectively encrypted information perceptively secure to a certain protection level: that is, to determine which parts of the information to encrypt to distort its perception beyond a desired threshold. In this paper, we continue the investigation in [5] of the confidentiality implications of selective encryption by applying entropy on the generic selective encryption scheme presented in [4]. Using the concept of runlength 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.…”

Section: Introductionmentioning

confidence: 99%

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Entropy of Selectively Encrypted Strings

Lundin

Lindskog

2011

Information Security Theory and Practice. Security and Privacy of Mobile Devices in Wireless Communication

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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.

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Incorporating Security and Energy Efficiency for Multimedia Communications in WANets

Kaddar

2012

Technological Advancements and Applications in Mobile Ad-Hoc Networks

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The security of multimedia data in Wireless Ad hoc Networks (WANet) is commonly provided by encryption, which consists in transforming a plain text message into an unintelligible ciphertext. Nevertheless, the classical and modern ciphers have all been developed without taking into consideration the intrinsic characteristics of multimedia flows. In this chapter, the author proposes to reduce the computational requirements for the multimedia flow’s encryption when the energy is a limited resource, as it is the case of WANets. Thus, the chapter defines a new profile of Secure Real Time Protocol (SRTP), named EE_SRTP. EE_SRTP provides energy efficiency to SRTP, which provides essentially confidentiality, message authentication, and replay protection to the RTP traffic. In EE_SRTP, the author exploits the dependency existing between the frames created by the inter-frame coding to further improve the energy-efficiency of the encryption process. In contrast with the existing approaches, this chapter presents an experimental model that integrates EE_SRTP to Video LAN Coding (VLC). Therefore, to validate EE_SRTP, the author implements a secure version of VLC (SecVLC). The performance evaluation demonstrates clearly that using this new scheme in the context of wireless ad hoc nodes allows saving energy while ensuring a high level of content confidentiality, without adding an overhead to the wireless network.

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Security implications of selective encryption

Cited by 3 publications

References 10 publications

EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

Entropy of Selectively Encrypted Strings

Incorporating Security and Energy Efficiency for Multimedia Communications in WANets

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Security implications of selective encryption

Cited by 3 publications

References 10 publications

EDES &#x2014; Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

EDES &#x2014; Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

Entropy of Selectively Encrypted Strings

Incorporating Security and Energy Efficiency for Multimedia Communications in WANets

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EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks

EDES — Efficient dynamic selective encryption framework to secure multimedia traffic in Wireless Sensor Networks