38 lines
1.4 KiB
JavaScript
38 lines
1.4 KiB
JavaScript
const crypto = require('crypto');
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// Characters used when generating a random API key: letters, digits and a handful of symbols.
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const API_KEY_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
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const API_KEY_LENGTH = 64;
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// Characters used when generating a random reader id: letters and digits only.
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const READER_ID_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
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const READER_ID_LENGTH = 16;
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// Generates a new place id as a random UUID (v4).
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function generatePlaceId() {
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return crypto.randomUUID();
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}
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// Generates a random 16-character alphanumeric reader (access point) id.
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// Uses crypto.randomInt for unbiased selection of each character.
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function generateReaderId(length = READER_ID_LENGTH) {
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let id = '';
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for (let i = 0; i < length; i++) {
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id += READER_ID_CHARS[crypto.randomInt(READER_ID_CHARS.length)];
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}
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return id;
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}
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// Generates a random alphanumeric+symbol API key of the given length (default 64 characters).
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// Uses crypto.randomInt for unbiased selection of each character (rather than bytes % length,
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// which would skew towards characters at the start of the alphabet).
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function generateApiKey(length = API_KEY_LENGTH) {
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let key = '';
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for (let i = 0; i < length; i++) {
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key += API_KEY_CHARS[crypto.randomInt(API_KEY_CHARS.length)];
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}
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return key;
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}
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module.exports = { generatePlaceId, generateApiKey, generateReaderId };
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