Python 3.6.5 Documentation >  Cryptographic Services

Cryptographic Services
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The modules described in this chapter implement various algorithms of
a cryptographic nature. They are available at the discretion of the
installation. On Unix systems, the "crypt" module may also be
available. Here’s an overview:

* "hashlib" — Secure hashes and message digests

* Hash algorithms

* SHAKE variable length digests

* Key derivation

* BLAKE2

* Creating hash objects

* Constants

* Examples

* Simple hashing

* Using different digest sizes

* Keyed hashing

* Randomized hashing

* Personalization

* Tree mode

* Credits

* "hmac" — Keyed-Hashing for Message Authentication

* "secrets" — Generate secure random numbers for managing secrets

* Random numbers

* Generating tokens

* How many bytes should tokens use?

* Other functions

* Recipes and best practices