JWT vs PASETO v2 vs TECTO: Choosing the Right Token Protocol in 2026

Tokens are everywhere in modern auth flows. But not all tokens are created equal . In this post we'll compare three approaches side by side — classic JWTs, the more modern PASETO v2, and the brand-new TECTO — across security, ergonomics, and real code. 🔍 The Quick Summary Property JWT (HS256) PASETO v2 TECTO Payload visible? ✅ Yes (base64) ✅ Yes (signed, not encrypted) ❌ Fully encrypted Cipher None (HMAC) Ed25519 (sign) / XChaCha20 (encrypt) XChaCha20-Poly1305 Nonce N/A 24-byte per token 24-byte CSPRNG per token Key size Variable Variable Exactly 256-bit (enforced) Tamper detection HMAC signature Ed25519 / Poly1305 tag Poly1305 auth tag Error specificity Reveals reason Reveals reason Generic "Invalid token" Algo confusion attacks ⚠️ Yes (the alg: none problem) ✅ No ✅ No Key rotation built-in ❌ DIY ❌ DIY ✅ Native ( kid in token) 1️⃣ JWT — The Industry Standard jsonwebtoken is the most widely used token library in Node.js. It's battle-tested, has a massive ecosystem, and is dead-simple t