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HMAC Generator

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HMAC Algorithm:

Output Format:

Enter key and text above to automatically calculate HMAC result
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HMAC Generator Guide

说明

What is HMAC?

HMAC (Hash-based Message Authentication Code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. It provides a secure way to verify both the data integrity and authenticity of a message.

技术原理

Technical Principles

HMAC operates by combining a cryptographic hash function (like SHA256) with a secret key. The process involves two rounds of hashing, using inner and outer padded keys, which makes it highly resistant to various cryptographic attacks while maintaining computational efficiency.

用途

Common Applications

  • API Authentication & Authorization
  • Digital Signature Generation
  • Secure Token Creation
  • Message Integrity Verification
  • Secure File Transfer Validation
  • Blockchain Transaction Signing
算法

Supported Algorithms

  • HMAC-SHA256 (Recommended for general use)
  • HMAC-SHA512 (Higher security level)
  • HMAC-SHA1 (Legacy support)
  • HMAC-MD5 (Not recommended for security-critical applications)
使用方法

How to Use

  1. Enter your message in the input field
  2. Provide your secret key
  3. Select your preferred hash algorithm (SHA256 recommended)
  4. Click 'Generate' to create your HMAC
  5. Copy the generated hash for your application