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A pure-python implementation of the Damm Algorithm in Base 32.

Project description

Damm32

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Python implementation of the Damm Algorithm in Base 32

By default, it uses an alphabet as specified in RFC 4648 which contains 32 alphanumeric characters, with similar looking characters removed. The padding symbol is not included.

Installation

The package is available on PyPI and can be installed using pip.

pip install damm32

Alternatively, you can clone the repository and use the module.

Usage

The module contains a single class called Damm32, this class implements the methods for the checksum.

from damm32 import Damm32

d32 = Damm32()

digit = d32.calculate("HELLO")

d32.verify("HELLO" + digit)

You can also pass an list of length 32 to the constructor for the class to specify your alphabet.

from damm32 import Damm32

d32 = Damm32(['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7'])

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