HMAC Generator Online

      HMAC Generator Online
    
      Generate HMAC (Hash-based Message Authentication Code) using various hash algorithms. 
HMAC provides both data integrity and authentication with a secret key.
  
        Hash Algorithm
      
            Secret Key
          
          Key length: 0 characters
        
            Input Message
          
              Upload
              
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            HMAC Hash
          
          HMAC hash will appear here...
        
          Characters: 0
        
    About HMAC
  
    HMAC (Hash-based Message Authentication Code) is a cryptographic method that combines a hash function and a secret key to ensure both data integrity and authenticity.
  
    What is HMAC?
  ✓ Combines hash function with a secret key
✓ Verifies data integrity and authenticity
✓ Resistant to length extension attacks
✓ Used in API authentication and digital signatures

    Common Use Cases
  ✓ API authentication
✓ JWT token signing
✓ Message integrity verification
✓ Secure communications
✓ Digital signatures

    Security Benefits
  
    HMAC provides data integrity and authentication. It is resistant to length extension attacks and offers strong protection when paired with secure hash functions like SHA-256.
  
    Features of this Tool
  ✓ Multiple hash algorithms (SHA-1, SHA-256, SHA-384, SHA-512)
✓ Random key generation
✓ Real-time hash generation
✓ File upload support
✓ Copy to clipboard
✓ Download hash results
✓ 100% client-side processing
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