43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
"use strict";
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import { arrayify } from "@ethersproject/bytes";
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import { Logger } from "@ethersproject/logger";
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import { version } from "./_version";
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const logger = new Logger(version);
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// Debugging line for testing browser lib in node
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//const window = { crypto: { getRandomValues: () => { } } };
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis
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function getGlobal() {
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if (typeof self !== 'undefined') {
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return self;
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}
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if (typeof window !== 'undefined') {
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return window;
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}
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if (typeof global !== 'undefined') {
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return global;
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}
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throw new Error('unable to locate global object');
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}
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;
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const anyGlobal = getGlobal();
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let crypto = anyGlobal.crypto || anyGlobal.msCrypto;
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if (!crypto || !crypto.getRandomValues) {
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logger.warn("WARNING: Missing strong random number source");
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crypto = {
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getRandomValues: function (buffer) {
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return logger.throwError("no secure random source avaialble", Logger.errors.UNSUPPORTED_OPERATION, {
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operation: "crypto.getRandomValues"
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});
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}
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};
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}
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export function randomBytes(length) {
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if (length <= 0 || length > 1024 || (length % 1) || length != length) {
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logger.throwArgumentError("invalid length", "length", length);
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}
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const result = new Uint8Array(length);
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crypto.getRandomValues(result);
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return arrayify(result);
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}
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;
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//# sourceMappingURL=random.js.map
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