Base64 Decoding with Ignorable Characters using SIMD instructions

Base64 Decoding with Ignorable Characters using SIMD instructions | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 4 February 2025 V1 Latest version Share on Base64 Decoding with Ignorable Characters using SIMD instructions Author : Daniel Lemire [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.173866897.72952916/v1 247 views 214 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The base64 format is ubiquitous: it is used in emails and Web documents to encode binary data as text. By convention, base64 text often includes ignorable characters such as spaces. We introduce the first base64-decoding algorithms with support for ignorable characters designed for single-instruction-multiple-data (SIMD) instructions. Our novel functions multiply the base64 decoding speed compared to traditional methods. Our algorithms have been implemented for different hardware architectures (ARM and x64). Our approach has been widely adopted in JavaScript runtimes and Web browsers. Supplementary Material File (base64whatwg.pdf) Download 307.18 KB Information & Authors Information Version history V1 Version 1 04 February 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords binary-to-text encoding vectorization web performance Authors Affiliations Daniel Lemire [email protected] Universite TELUQ View all articles by this author Metrics & Citations Metrics Article Usage 247 views 214 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Daniel Lemire. Base64 Decoding with Ignorable Characters using SIMD instructions. Authorea . 04 February 2025. DOI: https://doi.org/10.22541/au.173866897.72952916/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. 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