Data Encryption Standard is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page. Demonstrate the Data.
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| Discusses symmetric encryption key generation techniques for block encryption algorithms such as AES, Blowfish, and Twofish, or for other algorithms such as ChaCha20.
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Basic but pure DES implementation in PythonI have written it for fun because nothing else.
![Des key generation program in python download Des key generation program in python download](/uploads/1/2/5/7/125717903/509316071.gif)
How it works ?
Everything is made within a class called 'des'. This class can be instanciated once and used to cipher and decipher multiple datas.It also support padding using the PKCS5 specification. (So the data is padding even if it is multiple of 8 to be sure that the last byte il be padding data).The generation of all the keys used is made in the method generatekeys and substitute apply the SBOX permutation.The main method is run which is called by both encrypt and decrypt but in a different mode. This method do basically all the stuff, it loopthrought all the blocks and for each do the 16th rounds.
![Des key generation python program Des key generation python program](/uploads/1/2/5/7/125717903/280920127.gif)
Be careful: This module implement DES in ECB mode, so you can't make it weaker. I didn't made it to be strong but for fun.
How to use it ?
I have not done any interface to take argument in command line so this module can't be used as a script. (feel free to modify it).To use it from python shell or in another module do:
Note: In this exemple no padding is specified so you have to provide a text which is multiple of 8 bytes. The key is cut to 8 bytes if longer.
Des Key Generation Program In Python Pdf
To use padding: