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Keyed Hashing

A cryptographic method that combines hashing with secret keys for data integrity verification.

Understanding:


Keyed hashing involves combining cryptographic hashes with a secret key to enhance security, commonly used in Message Authentication Codes (MACs).

Common Applications and Use Cases:


  • Message Integrity Verification – Ensures messages are not tampered with.

  • Digital Signatures – Used in authentication protocols.

  • Password Storage & Protection – Enhances security of stored credentials.

Best Practices and Security Considerations:


  • Use Secure Hash Algorithms (SHA-256, SHA-3) – Prevent collisions.

  • Use Strong, Unique Keys – Prevent brute-force attacks.

  • Store Keys Securely – Protect against key exposure.

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