Validador JWT
Valida la estructura de tokens JWT y verifica la expiracion. Comprueba header, payload y algoritmo sin la clave secreta.
Referencia de validacion JWT
Lista de verificacion JWT
| # | Check | What to verify | Requires Key? |
|---|---|---|---|
| 1 | Structure | Token has exactly 3 dot-separated parts | No |
| 2 | Header JSON | First part decodes to valid JSON | No |
| 3 | Payload JSON | Second part decodes to valid JSON | No |
| 4 | Algorithm | Header contains "alg" field | No |
| 5 | Expiration | exp claim vs current time | No |
| 6 | Not Before | nbf claim vs current time | No |
| 7 | Issuer | iss matches expected issuer | No |
| 8 | Audience | aud matches your app | No |
| 9 | Signature | Cryptographic signature verification | Yes |
Errores JWT comunes
| Error | Cause | Fix |
|---|---|---|
| jwt expired | exp claim is in the past | Refresh the token or extend expiry |
| jwt malformed | Token does not have 3 parts | Check token format and encoding |
| invalid signature | Signature does not match | Verify the signing key matches |
| jwt not active | nbf claim is in the future | Wait until the token becomes active |
| invalid algorithm | alg does not match expected | Ensure consistent algorithm configuration |
| invalid audience | aud does not match your app | Check audience claim configuration |
Validacion vs Verificacion
La validacion JWT verifica la estructura. La verificacion JWT confirma la firma con la clave. Esta herramienta solo realiza la validacion.
Preguntas frecuentes
Herramientas JWT relacionadas
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