HMAC-SHA256

Keyed-hash Message Authentication Code. Combines SHA-256 with a cryptographic secret key.

securehash

Plaintext / Input Message

Cryptographic Key / Shift

Auto Compute

Workspace Presets

Save and restore visualizer settings in this browser.

Preset nameSave key with preset — disabled by default. Stored keys remain readable to anyone with access to this browser profile.

Saved presets for this cipher

Generated Hash Digest

No output

Imported traces are validated and replayed locally. They never run a cipher operation automatically.