40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
var randomId;
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if ((typeof window !== 'undefined') &&
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(typeof window.crypto !== 'undefined') &&
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(typeof window.crypto.getRandomValues !== 'undefined')) {
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randomId = function (byteCount, hexOutput) {
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var buf = new Uint8Array(byteCount);
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window.crypto.getRandomValues(buf);
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if (hexOutput) {
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var encoded = [];
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for (var i = 0; i < buf.length; i++) {
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encoded.push("0123456789abcdef"[(buf[i] >> 4) & 15]);
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encoded.push("0123456789abcdef"[buf[i] & 15]);
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}
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return encoded.join('');
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} else {
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return btoa(String.fromCharCode.apply(null, buf)).replace(/=/g,'');
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}
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};
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} else {
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var crypto;
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try {
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crypto = require('crypto');
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} catch (e) {}
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if ((typeof crypto !== 'undefined') &&
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(typeof crypto.randomBytes !== 'undefined')) {
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randomId = function (byteCount, hexOutput) {
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if (hexOutput) {
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return crypto.randomBytes(byteCount).hexSlice().replace(/=/g,'');
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} else {
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return crypto.randomBytes(byteCount).base64Slice().replace(/=/g,'');
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}
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};
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} else {
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console.warn('No suitable implementation for RandomID.randomId available.');
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}
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}
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module.exports.randomId = randomId;
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