Abstract
The Internet of Things (IoT) paradigm envisions a world where everyday things interchange information between each other in a way that allows users to make smarter decisions in a given context. Even though IoT has many advantages, its characteristics make it very vulnerable to security attacks. Ciphers are a security primitive that can prevent some of the attacks; however, the constrained computing and energy resources of IoT devices impede them from implementing current ciphers. This article presents the stream cipher Generador de Bits Pseudo Aleatorios (GBPA) based on Salsa20 cipher, which is part of the eSTREAM project, but designed for resource-constrained IoT devices of Class 0. GBPA has lower program and data memory requirements compared with Salsa20 and lightweight ciphers. These properties allow low-cost resource-constrained IoT devices, 29.5% of the embedded systems in the market, to be able to implement a security service that they are currently incapable of, to preserve the user’s data privacy and protect the system from attacks that could damage it. For the evaluation of its output, three statistical test suites were used: NIST Statistical Test Suite (STS), DIEHARD and EACirc, with good results. The GBPA cipher provides security without having a negative impact on the computing resources of IoT devices.
Highlights
Society is moving towards a more connected world
Three statistical test suites were used to evaluate the output of the Generador de Bits Pseudo Aleatorios (GBPA) cipher: the Statistical
Internet of Things (IoT) is a promising technology that could bring a significant improvement to our daily lives, from making our lives more comfortable to having a better response to emergency situations
Summary
Society is moving towards a more connected world. The Internet of Things (IoT) is a technology whose goal is that everyday objects interact and exchange information with each other to accomplish a particular objective. Cloud services are used by them to provide contextual data to users and to retrieve petitions to modify them; connectivity to the Internet makes them accessible from everywhere, and all the time; this empowerment makes them very vulnerable because from anywhere in the world, they can be reached and attacked. To recover the original message, the ciphertext and the key are input to the decryption function, which usually consists of the encryption transformations performed backward. A block cipher divides the message or ciphertext into blocks of a fixed size and encrypts or decrypts it one block at a time. The proposed algorithm in this article is a stream cipher
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