mirror of
https://github.com/streetwriters/notesnook.git
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46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
/*
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This file is part of the Notesnook project (https://notesnook.com/)
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Copyright (C) 2023 Streetwriters (Private) Limited
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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*
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* @param {number} size
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* @returns {Buffer}
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*/
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module.exports.randomBytes = function randomBytes(size) {
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if (!global.crypto || !crypto)
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throw new Error("Crypto is not supported on this platform.");
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if (crypto.randomBytes) return crypto.randomBytes(size);
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if (!crypto.getRandomValues)
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throw new Error(
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"Crypto.getRandomValues is not available on this platform."
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);
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const buffer = Buffer.allocUnsafe(size);
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crypto.getRandomValues(buffer);
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return buffer;
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};
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module.exports.randomInt = function () {
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const randomBuffer = module.exports.randomBytes(1);
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let randomNumber = randomBuffer[0] / 0xff; // / (0xffffffff + 1);
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return Math.floor(randomNumber * 0xffffff);
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};
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