ANALISIS PERFORMA AES-128, AES-192, DAN AES-256 PADA NODE.JS

M. Husni Mubarok; Agustian prakarsya; Sri Rahayu

doi:10.54342/wym48457

Authors

Agustian Prakarsya Institut Teknologi dan Bisnis Lembah Dempo
Agustian prakarsya Universitas Serelo Lahat
Sri Rahayu Universitas Lembah Dempo

DOI:

https://doi.org/10.54342/wym48457

Keywords:

AES, Node.Js, Benchmarking, Kriptografi, Perfoma

Abstract

This study aims to analyze
differences in AES encryption
performance across key lengths
of 128, 192, and 256 bits within
a Node.js environment. Experiments
were conducted on a laptop equipped
with an Intel Core i5-12500H process
or and Node.js version 24.15.0.
A controlled benchmarking method was
employed, involving the encryption of
synthetic files ranging from 1 KB
to 10 MB over 10 iterations per
configuration. Test results indicate
that AES-256 incurs a time overhead
of approximately 25% compared to
AES-128 for small files; however,
this difference becomes negligible
—or even negative—for large files.
This phenomenon is attributed to A
ES-NI hardware optimization in mode
rn processors. The study offers
practical recommendations to help
developers select the AES
configuration best suited to their
application requirements.

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