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HMAC Generator

HMAC-SHA256/1/512 via Web Crypto. Keys never leave your browser.

100% client-side · nothing uploaded · by Ajay Kakkar

About this tool

Free online HMAC generator - create HMAC-SHA256, HMAC-SHA1 or HMAC-SHA512 message authentication codes using the Web Crypto API. 100% private, browser-based.