HMAC

Category: Hashing

Status: Registered and callable in the CyberChef 11.3.0 compatibility inventory.

Input / output: ArrayBuffer → string

Background: https://wikipedia.org/wiki/HMAC

What it does

Keyed-Hash Message Authentication Codes (HMAC) are a mechanism for message authentication using cryptographic hash functions.

Note

Status here means the operation name is implemented and callable. It does not by itself promise byte-for-byte parity for every upstream option. See Compatibility and current status for the verified scope and known boundaries.

Arguments and options

Arguments are positional. Keep their order when using bake() or Pipeline.then().

Index

Name

UI type

PyChef default

Accepted values / format

0

Key

toggleString

{'string': '', 'option': 'Hex'}

''

1

Hashing function

option

'SHA256'

'MD2', 'MD4', 'MD5', 'SHA0', 'SHA1', 'SHA224', 'SHA256', 'SHA384', 'SHA512', 'SHA512/224', 'SHA512/256', 'RIPEMD128', 'RIPEMD160', 'RIPEMD256', 'RIPEMD320', 'HAS160', 'Whirlpool', 'Whirlpool-0', 'Whirlpool-T', 'Snefru'

Recipe template

Important

This is a call template built from the documented defaults. Replace placeholder values such as empty keys, paths, patterns, or lookup data before running it.

from pychef import bake

input_value = b"example"
args = [{'string': '', 'option': 'Hex'}, 'SHA256']
result = bake(input_value, [{"op": 'HMAC', "args": args}])
print(result)

Pipeline example

from pychef import Pipeline

args = [{'string': '', 'option': 'Hex'}, 'SHA256']
transform = Pipeline().then('HMAC', *args)
result = transform(b"example")

Dedicated operation module

The registered entry point lives in pychef.operations.by_operation.hmac. Direct calls receive the input value and a positional argument tuple:

from pychef.operations.by_operation.hmac import run

result = run(b"example", tuple([{'string': '', 'option': 'Hex'}, 'SHA256']))
pychef.operations.by_operation.hmac.run(value, args)

Run this operation using its shared internal implementation.

Parameters:

  • value (str | bytes)

  • args (Sequence[Any])

Return type:

str | bytes