28 lines
1015 B
JavaScript
28 lines
1015 B
JavaScript
function toHexString(byteArray) {
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// cc-by-sa-4 https://stackoverflow.com/a/44608819 by https://stackoverflow.com/users/1883624/grantpatterson
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var s = '0x';
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byteArray.forEach(function(byte) {
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s += ('0' + (byte & 0xFF).toString(16)).slice(-2);
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});
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return s;
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}
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async function sha256(str) {
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const buf = await crypto.subtle.digest("SHA-256", new TextEncoder("utf-8").encode(str));
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return Array.prototype.map.call(new Uint8Array(buf), x=>(('00'+x.toString(16)).slice(-2))).join('');
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}
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async function userIcon(pubkey, imgSize=64){
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pubkey = await sha256(base32.decode.asBytes(pubkey))
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let options = {
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//foreground: [0,0,0,1], // rgba black
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background: [255, 255, 255, 255], // rgba white
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//margin: 0.1,
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size: imgSize,
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format: 'svg' // use SVG instead of PNG
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};
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// create a base64 encoded SVG
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let data = new Identicon(pubkey, options).toString();
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return data
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} |