n8n-workspace/Crypto.json

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                            "id": "67c488b2-bd53-483d-8ac5-f0561b4138d8",
                            "name": "crypto",
                            "value": "const crypto = require('crypto');\n\nfunction encrypt(text, encryption_key) {\n    // 2. Erzeuge einen zufälligen Initialisierungsvektor (IV)\n    const iv = crypto.randomBytes(16);\n    \n    // 3. Cipher-Objekt erstellen\n    const cipher = crypto.createCipheriv('aes-256-gcm', Buffer.from(encryption_key), iv);\n\n    // 4. Verschlüsseln\n    let encrypted = cipher.update(text, 'utf8', 'hex');\n    encrypted += cipher.final('hex');\n\n    // 5. Den Authentifizierungs-Tag abrufen (WICHTIG bei GCM)\n    const authTag = cipher.getAuthTag().toString('hex');\n\n    // 6. Alles zusammenfügen: iv + verschlüsselter Text + Tag\n    // Wir trennen sie mit Doppelpunkten, damit wir sie später leicht splitten können\n    return iv.toString('hex') + ':' + encrypted + ':' + authTag;\n}\n\n// 1. Konfiguration (Diese Werte sollten aus Umgebungsvariablen kommen!)\n// Der Key muss exakt 32 Zeichen lang sein für AES-256\nconst encryption_key = '12345678901234567890123456789012'; \n\n/**\n * Entschlüsselt einen String\n * @param {string} text - Der verschlüsselte String im Format \"iv:content:tag\"\n */\nfunction decrypt(text, encryption_key) {\n    const textParts = text.split(':');\n    const iv = Buffer.from(textParts.shift(), 'hex');\n    const encryptedText = Buffer.from(textParts.shift(), 'hex');\n    const authTag = Buffer.from(textParts.shift(), 'hex'); // GCM Modus nutzt Auth Tags zur Sicherheit\n\n    const decipher = crypto.createDecipheriv('aes-256-gcm', Buffer.from(encryption_key), iv);\n    decipher.setAuthTag(authTag);\n\n    let decrypted = decipher.update(encryptedText, 'hex', 'utf8');\n    decrypted += decipher.final('utf8');\n\n    return decrypted;\n}",
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                "jsCode": "const { encrypt, decrypt } = require('/home/node/.n8n/crypto_utils.js');\n\nconst key = '12345678901234567890123456789012';\nconst text = \"Geheimnis\";\n\nreturn {\n    result: encrypt(text, key)\n};"
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