HMAC Calculation - Examples - Practical Cryptography for Developers

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HMAC Calculation - Examples

In Python we can calculate HMAC codes as follows (using the hashlib and hmac libraries):
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import hashlib, hmac, binascii
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​
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def hmac_sha256(key, msg):
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  return hmac.new(key, msg, hashlib.sha256).digest()
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​
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key = b"12345"
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msg = b"sample message"
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print(binascii.hexlify(hmac_sha256(key, msg)))
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Run the above code example: ****https://repl.it/@nakov/HMAC-SHA256-Examples.
The above code will calculate and print the expected HMAC code (like in our previous example):
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ee40ca7bc90df844d2f5b5667b27361a2350fad99352d8a6ce061c69e41e5d32
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Try the code yourself and play with it.

HMAC and Key Derivation

Exercises: Calculate HMAC

Last modified 3mo ago

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