Análisis de rendimiendo de la función criptográfica Hash sobre sistemas embebidos de 32 bits

Abstract

In this article, the performance analysis of the SHA256 cryptographic function on 32-bit embedded systems is performed. An analysis of the hash function is performed and later it is implemented in different systems; taking into account that specific functions must be implemented for the analysis of the final results. Through the mbedtls library, the function is implemented in five embedded systems in which their processor characteristics, frequency and RAM vary; this in order to make a performance comparison between the different implemented systems. With the results of the analysis it is possible to verify that the SHA-256 function can be implemented in any embedded system thanks to existing libraries in the network. Also, it is possible to show that several aspects must be taken into account; such as the type of processor and frequency at which the system to be used works because despite the fact that the library makes the SHA-256 function work in an optimized way, this affects the calculation performance of the function.