HMAC Calculation - Examples in Python

In Python we can calculate HMAC codes as follows (using the hashlib and hmac libraries):

import hashlib, hmac, binascii

def hmac_sha256(key, msg):
  return hmac.new(key, msg, hashlib.sha256).digest()

key = b"12345"
msg = b"sample message"
print(binascii.hexlify(hmac_sha256(key, msg)))

The above code will calculate and print the expected HMAC code (like in our previous example):

ee40ca7bc90df844d2f5b5667b27361a2350fad99352d8a6ce061c69e41e5d32

Try the code yourself and play with it.

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