Pcryt - Python Encryption via LFSR in Base64

Pcryt is a Python-based encryption program.

About Pcryt

At the moment, Pcryt is highly simplified and minimalistic.

Running Pcryt

For v0.1.2

1. Command Line Method

Single Message Encryption/Decryption

Use the following command in the command line interface. Replace the "MESSAGE" with the text you want to encrypt, replace "SEED" with a binary value, e.g. 110010, and the "TAPPOSITION" can be a number less than the maximum number of digits in the SEED you enter.

python lfsr.py MESSAGE SEED TAPPOSITION

Use the following command to initiate "mass decrypting" mode.

python lfsr.py _attemptall_ SEED

Text File Encryption/Decryption

Use the following command in the command line interface.

python lfsr_auto.py SEED TAPPOSITION

2. Instruction Method

Single Message Encryption/Decryption

Launch the "pcryt_launcher.bat" file. Instructions are presented step-by-step.

Text File Encryption

Launch the "pcryt_encrypt.bat" file. Nothing else to do. It uses a default seed and tapposition automatically. . . .

For earlier versions

Use the following command in the command line interface. Replace the "MESSAGE" with the text you want to encrypt, and the TAPPOSITION can be a number between 0-5

python lfsr.py MESSAGE TAPPOSITION

Use the following command to initiate "mass decrypting" mode.

python lfsr.py attemptall 5

Note

Pcryt is open source. That means anyone is free to download, modify, sell, use, etc. any part of this program. It is a kind note to please credit the author(s) of the modules if you can.

Version Updates

• v0.1.0 'Cronos' (obsolete)
  • encryption with LFSR
  • decryption with LFSR
  • mass decryption
  • CUI
• v0.1.1 'Cronos II' (previous)
  • encryption with LFSR
  • decryption with LFSR
  • mass decryption
  • CUI
  • Base64 encoding
  • ASCII encoding
  • unlimited 'tap position' range (limited to 5 for this version)
  • text file encryption
• v0.1.2 'Caesar' (current)
  • encryption with LFSR
  • decryption with LFSR
  • mass decryption
  • CUI
  • Base64 encoding
  • ASCII encoding (still needs adjustments)
  • unlimited 'tap position' range
  • text file encryption
  • automated batch files
  • non-developer-friendly GUI

The features without the tick marks will be added soon, in the next version.

Caution

This project has been abandoned since 2021 and will not be receiving any official updates from my side for a long time. It may serve as an example of a well-formatted Markdown README for a GitHub repository.