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Jul 1, 2025
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Create index.ts #1

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23 changes: 23 additions & 0 deletions index.ts
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Original file line number Diff line number Diff line change
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function generatePassword(length: number, useUpper = true, useLower = true, useDigits = true, useSpecial = true): string {
const upper = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
const lower = 'abcdefghijklmnopqrstuvwxyz';
const digits = '0123456789';
const special = '!@#$%^&*()_-+=[]{}|;:,.<>?';
let chars = '';
if (useUpper) chars += upper;
if (useLower) chars += lower;
if (useDigits) chars += digits;
if (useSpecial) chars += special;

if (!chars) throw new Error('Bitte mindestens einen Zeichentyp auswählen!');

let password = '';
for (let i = 0; i < length; i++) {
password += chars.charAt(Math.floor(Math.random() * chars.length));
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Copilot AI Jul 1, 2025

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Math.random() is not cryptographically secure; consider using Node.js crypto.randomInt or crypto.getRandomValues to generate secure random indexes for password characters.

Suggested change
password += chars.charAt(Math.floor(Math.random() * chars.length));
password += chars.charAt(crypto.randomInt(0, chars.length));

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}
return password;
}

// Simple CLI-Ausgabe
const len = Number(process.argv[2]) || 16;
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Copilot AI Jul 1, 2025

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User input for password length should be validated to ensure it's a positive integer; currently invalid or negative values may produce unexpected results or default silently to 16.

Suggested change
const len = Number(process.argv[2]) || 16;
const inputLength = process.argv[2];
const len = parseInt(inputLength, 10);
if (isNaN(len) || len <= 0) {
throw new Error("Invalid password length. Please provide a positive integer.");
}

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console.log("Generated Password:", generatePassword(len));