Data integrity refers to the assurance that data remains accurate, unaltered, and consistent throughout its lifecycle. In communication, it is crucial to ensure data integrity to safeguard against unintended alterations and malicious interventions during transmission. The integrity of Digital Data is accomplished using Hashing Algorithms. The  crypto module in

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This post discusses the importance of data integrity in communication and how to protect data in transit using HMAC and Diffie-Hellman in Node.js. It explains the concepts of Message Detection Code (MDC), Message Authentication Code (MAC), and Hash-based MACs (HMAC) in detail. The post also provides a brief overview of the Diffie-Hellman-Merkle Protocol and demonstrates how to implement these cryptographic constructs in a Node.js application.

How to Protect Data in Transit using HMAC and Diffie-Hellman in Node.js [Full Handbook]