Windows · Free download · Encryption Security
Vigenere Cipher
Vigenere Cipher : Encrypt and decrypt messages and files
- Operating system
- Windows 10/11
- File size
- 45 KB
- License
- GNU Public License
- Last updated
- Apr 22, 2026
67 downloads·441 page views
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Overview
What is Vigenere Cipher?
Vigenere Cipher : Encrypt and decrypt messages and files
In depth
A closer look at Vigenere Cipher
The Vigenere Cipher was developed to be an old cryptographic system, which offers very little security, but is interesting to analyse. This program allows you to encrypt and decrypt messages and files using the original form of the cipher, which only handles capital letters. It also has a facility to try to decode a ciphertext with unknown key, which is usually successful, within some limits. The "save document with password" function in some desktop applications use the Vigenere cipher, slightly modified to handle all bytes rather than just capital letters (by using XOR), but having the same vulnerabilities.
Verdict
Should you download Vigenere Cipher?
Vigenere Cipher runs on Windows 10/11 and is available under the GNU Public License license — the installer is 45 KB. We’ve catalogued it under Encryption Security.
Verified clean. Every Vigenere Cipher build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance
Vigenere Cipher specifications
- Category
- Encryption Security
- Publisher
- Paul Johnston
- Last updated
- Apr 22, 2026
- License
- GNU Public License
- Operating system
- Windows 10/11
- File size
- 45 KB
- Price
- Free
- Page views
- 441
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