Survey and Benchmark of Block Ciphers for Wireless Sensor Networks

Cryptographic algorithms play an important role in the security architecture of wireless sensor networks (WSNs). Choosing the most storage- and energy-efficient block cipher is essential, due to the facts that these networks are meant to operate without human intervention for a long period of time with little energy supply, and that available storage is scarce on these sensor nodes. However, to our knowledge, no systematic work has been done in this area so far.We construct an evaluation framework in which we first identify the candidates of block ciphers suitable for WSNs, based on existing literature and authoritative recommendations. For evaluating and assessing these candidates, we not only consider the security properties but also the storage- and energy-efficiency of the candidates. Finally, based on the evaluation results, we select the most suitable ciphers for WSNs, namely Skipjack, MISTY1, and Rijndael, depending on the combination of available memory and required security (energy efficiency being implicit). In terms of operation mode, we recommend Output Feedback Mode for pairwise links but Cipher Block Chaining for group communications

Systematization of a 256-bit lightweight block cipher Marvin

In a world heavily loaded by information, there is a great need for keeping specific information secure from adversaries. The rapid growth in the research field of lightweight cryptography can be seen from the list of the number of lightweight stream as well as block ciphers that has been proposed in the recent years. This paper focuses only on the subject of lightweight block ciphers. In this paper, we have proposed a new 256 bit lightweight block cipher named as Marvin, that belongs to the family of Extended LS designs.Comment: 12 pages,6 figure

Efficient and Provable White-Box Primitives

International audienceIn recent years there have been several attempts to build white-box block ciphers whose implementations aim to be incompress-ible. This includes the weak white-box ASASA construction by Bouil-laguet, Biryukov and Khovratovich from Asiacrypt 2014, and the recent space-hard construction by Bogdanov and Isobe from CCS 2015. In this article we propose the first constructions aiming at the same goal while offering provable security guarantees. Moreover we propose concrete instantiations of our constructions, which prove to be quite efficient and competitive with prior work. Thus provable security comes with a surprisingly low overhead

Experimental realization of a highly secure chaos communication under strong channel noise

A one-way coupled spatiotemporally chaotic map lattice is used to contruct cryptosystem. With the combinatorial applications of both chaotic computations and conventional algebraic operations, our system has optimal cryptographic properties much better than the separative applications of known chaotic and conventional methods. We have realized experiments to pratice duplex voice secure communications in realistic Wired Public Switched Telephone Network by applying our chaotic system and the system of Advanced Encryption Standard (AES), respectively, for cryptography. Our system can work stably against strong channel noise when AES fails to work.Comment: 15 pages, 5 figure

Measuring Performances of a White-Box Approach in the IoT Context

The internet of things (IoT) refers to all the smart objects that are connected to other objects, devices or servers and that are able to collect and share data, in order to "learn" and improve their functionalities. Smart objects suffer from lack of memory and computational power, since they are usually lightweight. Moreover, their security is weakened by the fact that smart objects can be placed in unprotected environments, where adversaries are able to play with the symmetric-key algorithm used and the device on which the cryptographic operations are executed. In this paper, we focus on a family of white-box symmetric ciphers substitution-permutation network (SPN)box, extending and improving our previous paper on the topic presented at WIDECOM2019. We highlight the importance of white-box cryptography in the IoT context, but also the need to have a fast black-box implementation (server-side) of the cipher. We show that, modifying an internal layer of SPNbox, we are able to increase the key length and to improve the performance of the implementation. We measure these improvements (a) on 32/64-bit architectures and (b) in the IoT context by encrypting/decrypting 10,000 payloads of lightweight messaging protocol Message Queuing Telemetry Transport (MQTT)

Design of a Data Encryption Test-Bed Used to Analyze Encryption Processing Overhead

Data security is one of the most pressing issues faced by the organizations today. Unauthorized access to confidential information corresponding to employees/customers like SSN (Social Security numbers), financial information, health records, birth dates can be compromised both to the individual customers involved and the company withholding the data. The problem has become immense, approximately 260 million records were compromised since 2005 and companies, states and countries have reacted by mandating that industries should stringently follow the best security practices, including encryption and decryption of data. Also, the costs associated with data threats are quite increasing (Whitfield & Susan, 2007). Businesses that use strong encryption methodologies in their mobile devices, computers, cloud systems, other locations might not gain 100 % protection from dangerous hackers, but they can decrease their vulnerability to such attacks and thereby the potential of financial losses. Data encryption is the method of converting data in a computer or any communication system making it unintelligible in a way that the data can be reversed only by the authorized people accessing the original data. The primary goal is to safeguard the confidentiality of data, but integrity checks are also provided by the technique in various forms of authentication message codes. For instance, digital signature schemes are also fundamentals of encryption. The purpose of it is to ensure the authenticity of the identity of the receiver and sender. With an increasing awareness of security threats, many of the current companies are using cryptographic techniques for ensuring data security. Many of the companies like Amazon, Apple, AT&T and Comcast are using encryption techniques for securing the information. While there are a many encryption and decryption techniques available today, there is an obvious requirement for the current companies to find and choose the best reliable cryptographic techniques for securing their data. A performance test of various algorithms is needed to bring up the best technique. This research paper deals with the implementation of different cryptographic algorithms with a programming language called JAVA. It involves designing a graphical user interface (GUI) where sample input can be entered, common algorithms used to encrypt and decrypt the input can be selected. A mechanism for building a test bed for comparing the performances of the implemented algorithms is designed to calculate the encryption processing overhead