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HMAC: checking a message with a shared secret

Publisher: ResumeMaker • 1 source

Published: 22 Oct 2026 16:11 · Updated: 22 Oct 2026 16:11

AI source check: 22 Oct 2026 14:04. This is not editorial approval.

In a few sentences

In brief

HMAC combines a message, a secret key and a chosen hash algorithm. A recipient holding the same key can calculate the expected code and compare it with hmac.compare_digest().

Useful to know

HMAC combines a message, a secret key and a chosen hash algorithm. A recipient holding the same key can calculate the expected code and compare it with hmac.compare_digest(). [1]

This does not encrypt the content. Visible text remains visible, and confidentiality needs a separate mechanism. Distinguish checking integrity from hiding data, and keep the key out of public source code and logs.

Sources

For further detail and to check the information:

  1. [1] hmac — Keyed-Hashing for Message Authentication — Python 3.12.15 documentation ↗