HMAC-SHA-256
Create and verify keyed integrity values.
Advertisement
Before you start
Do not share the secret with the result.
Frequently asked questions
How is HMAC different from a plain SHA-256 hash?
HMAC uses both the data and a secret key. Verification requires the same key and exact data. It does not hide the data. Never include the secret key when sharing the result.
Is my file or input sent to a server?
No. Processing stays in your current browser session.