57 lines
1.7 KiB
Diff
57 lines
1.7 KiB
Diff
diff --git a/node_modules/randombytes/browser.js b/node_modules/randombytes/browser.js
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index 0fb0b71..3bd48fe 100644
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--- a/node_modules/randombytes/browser.js
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+++ b/node_modules/randombytes/browser.js
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@@ -12,13 +12,50 @@ function oldBrowser () {
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throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11')
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}
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+
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+
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var Buffer = require('safe-buffer').Buffer
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var crypto = global.crypto || global.msCrypto
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if (crypto && crypto.getRandomValues) {
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module.exports = randomBytes
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} else {
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- module.exports = oldBrowser
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+ module.exports = orandomBytes
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+}
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+
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+function getRandomValues(array) {
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+ for (var i = 0, l = array.length; i < l; i++) {
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+ array[i] = Math.floor(Math.random() * 256);
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+ }
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+ return array;
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+}
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+
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+function orandomBytes (size, cb) {
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+ // phantomjs needs to throw
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+ if (size > MAX_UINT32) throw new RangeError('requested too many random bytes')
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+
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+ var bytes = Buffer.allocUnsafe(size)
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+
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+ if (size > 0) { // getRandomValues fails on IE if size == 0
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+ if (size > MAX_BYTES) { // this is the max bytes crypto.getRandomValues
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+ // can do at once see https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
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+ for (var generated = 0; generated < size; generated += MAX_BYTES) {
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+ // buffer.slice automatically checks if the end is past the end of
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+ // the buffer so we don't have to here
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+ getRandomValues(bytes.slice(generated, generated + MAX_BYTES))
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+ }
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+ } else {
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+ getRandomValues(bytes)
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+ }
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+ }
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+
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+ if (typeof cb === 'function') {
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+ return process.nextTick(function () {
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+ cb(null, bytes)
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+ })
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+ }
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+
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+ return bytes
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}
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function randomBytes (size, cb) {
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