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How does JWT (JSON Web Token) ensure that the token has not been tampered with?

ICSM 519 27-Jul-2025

How does JWT (JSON Web Token) ensure that the token has not been tampered with?

authentication authentication  authorization 
Updated on 27-Jul-2025
ICSM

IT-Hardware & Networking

Ravi Vishwakarma is a dedicated Software Developer with a passion for crafting efficient and innovative solutions. With a keen eye for detail and years of experience, he excels in developing robust software systems that meet client needs. His expertise spans across multiple programming languages and technologies, making him a valuable asset in any software development project.

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Anubhav Kumar

Anubhav Kumar

27-Jul-2025

How does JWT (JSON Web Token) ensure that the token has not been tampered with?

  1. The token is signed using a secret key or private key (HMAC or RSA).
  2. If the signature does not match when the server verifies it, the token is considered invalid.
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