Simple Python implementation of the Vigenère cipher.
- Python 3
There are a total of three parameters the program can take. d/e for decode or encode, followed by the text and the keyword:
python3 vigenere.py <d/e> <text> <keyword>
Note: The program removes all spaces and other characters from the text and turns it into one with only uppercase letters:
Windows users: On Windows you don't need to write python3 ..., python ... is enough.
To encrypt the text Lorem ipsum dolor sit with the keyword CTMAGAZIN, simply type:
python3 vigenere.py e "Lorem ipsum dolor sit" CTMAGAZIN
This will return NHDESIOAHOWALURRQG.
To decrypt the message NHDESIOAHOWALURRQG type:
python3 vigenere.py d NHDESIOAHOWALURRQG CTMAGAZIN
The output is LOREMIPSUMDOLORSIT.
Copyright ©️ 2023 Wilhelm Drehling, Heise Medien GmbH & Co. KG
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.