HMAC Generator

Generate HMAC signatures for message authentication. Runs in your browser. Completely private.

No sign-up Batch convert 100% free

How to Use HMAC Generator

1

Choose & Upload

Enter the message text to authenticate

2

Convert

Enter your secret key

3

Download

Select the hash algorithm (SHA-256, SHA-384, SHA-512, or MD5)

4

Step 4

Copy the generated HMAC signature

Frequently Asked Questions