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‎utils/x509/extract-public-key/extract-public-key.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta charset=utf-8>
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<title>extract public key</title>
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<title>
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Extract Public Key
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</title>
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<meta name=description content='extract public key from x509 certificate'>
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<base href='https://ext-code.com/utils/x509/extract-public-key/'>
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<base href='https://javascript-2020.github.io/utils/x509/extract-public-key/'>
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<link rel=canonical href='https://ext-code.com/utils/x509/extract-public-key/extract-public-key.html'>
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<link rel='shortcut icon' type='image/x-icon' href='images/favicon.ico'>
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<link rel=icon type='image/x-icon' href='data:image/png;base64,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'>
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<meta name=viewport content='width=device-width, initial-scale=1'>
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<script type='application/ld+json'>
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{
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"@context" : "https://schema.org",
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"@type" : "SoftwareApplication",
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"name" : "Extract Public Key From X509 Certificate",
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"url" : "https://ext-code.com/utils/x509/certificate-info/certificate-info.html",
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"author" : {"@type":"Person","name":"Matthew Richards"},
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"description" : "Extract public key from x509 certificate",
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"applicationCategory" : "DeveloperApplication",
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"operatingSystem" : "All",
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"browserRequirements" : "Requires JavaScript-enabled browser",
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"softwareVersion" : "1.0.0",
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"offers" : {"@type":"Offer","price":"0","priceCurrency":"GBP"}
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}
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</script>
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<script src='https://libs.ext-code.com/js/dom/component/component.js'></script>
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<script init>
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</script>
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console.clear();
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console.log('extract-public-key-v2.0.html');
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console.log();
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console.json=v=>console.log(JSON.stringify(v,null,4));
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var df=true,did='html'
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;
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var ext;
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var $;
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var datatype;
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var menumod;
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var keydown;
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var hdr;
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var filemod;
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var log;
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//:
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async function init(){
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await load();
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menu = menumod();
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hdr = mod['x509-hdr'];
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//filemod = mod['file-mod'];
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log = mod['log-mod'];
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hdr.initmod({ext,$,menu});
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//filemod.initmod({ext,$,menu,menumod,complete,focus,source,editor,log});
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log.initmod({ext,$});
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await Promise.all([
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hdr.init(),
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//filemod.init(),
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log.init(),
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]);
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initdom(document.body);
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}//init
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(async()=>{
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mod.stack.add;
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({ext} = await import('https://libs.ext-code.com/js/io/ext-loader/ext-loader.m.js'));
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var promise = ext.load.libs(
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'js/dom/$.js',
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'js/core/datatype.js',
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'js/dom/menumod/menumod.js',
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'js/dom/keydown/keydown.js',
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);
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[$,datatype,menumod,keydown] = await promise;
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mod.stack.complete;
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})();
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async function load(){
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//var nodeForge = await import('https://cdn.jsdelivr.net/npm/node-forge/+esm');
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var txt = localStorage['node-forge'];
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if(!txt){
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var url = 'https://cdn.jsdelivr.net/npm/node-forge/+esm';
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console.log(url);
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var res = await fetch(url);
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txt = await res.text();
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localStorage['node-forge'] = txt;
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}
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var blob = new Blob([txt],{type:'text/javascript'});
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var url = window.URL.createObjectURL(blob);
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var nodeforge = await import(url);
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pki = nodeforge.default.pki;
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console.log(pki);
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}//load
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</script init>
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<style>
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{flex:1}
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pre
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{border:1px solid lightgray;font-size:16px;font-family:monospace}
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.visually-hidden
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{position:absolute !important;width:1px !important;height:1px !important;padding:0 !important;margin:-1px !important;overflow:hidden !important;
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clip:rect(0 0 0 0) !important;white-space:nowrap !important;border:0 !important}
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</style>
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<body>
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<x509-hdr component=grp>
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<h1 class=visually-hidden>
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extract public key
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</h1>
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<img class=title src='images/extract-public-key.png' style='top:-5px;height:55px'>
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<time slot=date datetime=2025-11-15>
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15 Nov 2025
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</time>
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</x509-hdr>
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<!--
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<div class=hdr>
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<a class=hdr-icon href='https://javascript-2020.github.io/'>
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<img class=hdr-icon-img src='data:image/png;base64,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' />
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22 Apr 2025
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</div>
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</div hdr>
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-->
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<div id=view>
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<script>
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console.clear();
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console.log('extract-public-key');
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console.log();
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console.json=v=>console.log(JSON.stringify(v,null,4));
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var $ = (root,sel)=>(!sel && (sel=root,root=document),root.querySelector(sel));
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$.mousetext = function(e,text){
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var left = e.pageX+'px';
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var top = e.pageY+'px';
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var style = {position:'absolute',left,top,padding:'10px',border:'1px solid dimgray',borderRadius:'3px',zIndex:999999,background:'white'};
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var append = document.body;
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var div = $.create.div({style,text,append});
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var rem = ()=>div.remove();
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div.onmouseleave = rem;
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div.onclick = rem;
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var time = 700;
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setTimeout(rem,time);
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}//mousetext
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var pki;
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btn.key = {};
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setTimeout(init,50);
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async function init(){
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await load();
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initdom();
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}//init
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//:
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async function load(){
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//var nodeForge = await import('https://cdn.jsdelivr.net/npm/node-forge/+esm');
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var txt = localStorage['node-forge'];
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if(!txt){
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var url = 'https://cdn.jsdelivr.net/npm/node-forge/+esm';
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console.log(url);
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var res = await fetch(url);
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txt = await res.text();
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localStorage['node-forge'] = txt;
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}
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var blob = new Blob([txt],{type:'text/javascript'});
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var url = window.URL.createObjectURL(blob);
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var nodeforge = await import(url);
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pki = nodeforge.default.pki;
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console.log(pki);
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}//load
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//:
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function initdom(){
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var rootnode = document.body;
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var root = {};
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hdr.initdom(rootnode);
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var root = {};
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root.cert = $(rootnode,'#cert-root');
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key = $(root.key,'#key');
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log.initdom();
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}//initdom
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