Encryptio

Encrypt strings, decrypt files and determine encryption algorithm of encrypted files.

Prerequisites

install required python in version 3.11

apt install python3.11

install required libraries via requirements

pip install -r requirements.txt

This will download and install the cryptography and cryptodome libraries.

Usage of encryptio.py

encryptio.py use a CLI interface(using argparse):

encryption

python3 encryptio.py encryption [-h] {AES,DES,3DES,IDEA,BLOWFISH} cryptoKey {CBC,CFB,CTR,ECB,OFB} cryptoData

Where

• {AES,DES,3DES,IDEA,BLOWFISH} - algorithm to encrypt your string with
• cryptoKey - key to encrypt your string with
• {CBC,CFB,CTR,ECB,OFB} - mode of encryption
• cryptoData - string to encrypt

decryption

python3 encryptio.py decryption [-h] {AES,DES,3DES,IDEA,BLOWFISH} cryptoKey {CBC,CFB,CTR,ECB,OFB} cryptoDataFile

Where

• {AES,DES,3DES,IDEA,BLOWFISH} - algorithm to decrypt your file with
• cryptoKey - key to decrypt your file with
• {CBC,CFB,CTR,ECB,OFB} - mode of encryption
• cryptoDataFile - file to decrypt

Usage of determiner.py

determiner.py use a CLI interface(using argparse):

determining

python3 determiner.py [-h] -f cryptoDataFile -k cryptoKey

Where

• cryptoDataFile - file to analyze
• cryptoKey - key to analyze

Examples

encrypt

python3 encryptio.py encryption AES 'PsaDqdsYnlAQjRXm' CBC 'This string should be encrypted'

encryptio.py - Published by Laura Tzigiannis and Moritz Nentwig
---------------------------------------------------------------

Encryption successfull: File created: encryptio_20_56_06.enc

decryption

python3 encryptio.py decryption AES 'PsaDqdsYnlAQjRXm' CBC encryptio_20_56_06.enc

encryptio.py - Published by Laura Tzigiannis and Moritz Nentwig
---------------------------------------------------------------

Decryption successfull: This string should be encrypted

determining

python3 determiner.py -f encryptio_20_56_06.enc -k 'PsaDqdsYnlAQjRXm'

determiner.py - Published by Laura Tzigiannis and Moritz Nentwig
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File extension: Unrecognized file extension
File header: AES
Block size: AES, DES, 3DES, IDEA, Blowfish
Key length: AES, 3DES, Blowfish, IDEA

Contributing

Feel free to contribute to this project.

Authors

• Moritz Nentwig - initial idea and work - Morn98
• Laura Tzigiannis - initial idea and work - tzigiannis

License

This project is licensed under the MIT License - see the LICENSE file for details.