Python coding challenges: "cryptography"

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Cryptography & Hashing easy

Constant Time Compare

Write a function that compares two strings without leaking length or content via timing.

constant-time security comparison

+10 pts 15m

Cryptography & Hashing easy

Verify HMAC signature

Implement a function that verifies an HMAC-SHA256 signature for a message and key.

hmac hashlib security

+10 pts 15m

Showing 2 challenges · Cryptography & Hashing

Cryptography & Hashing — Python coding challenges

What you will find here

This page lists cryptography & hashing challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.

Challenges vs tutorials and quizzes

Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.

Python Coding Challenges

Constant Time Compare

Verify HMAC signature

Cryptography & Hashing — Python coding challenges

What you will find here

Challenges vs tutorials and quizzes

Python Coding
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