What is TheLetterEncrypter?
TheLetterEncrypter is a free and open-source desktop application for Windows, Mac and Linux that allows users to encrypt text messages using a simple letter substitution cipher encryption method. Developed by an independent developer, it provides a basic level of security for short messages.
The software has an easy-to-use interface where users enter text into the input box and click the Encrypt button. It then encrypts the message by substituting each letter with another letter based on a key. Users share the encrypted message and the key to allow recipients to decrypt the message back into the original text.
As it uses a very basic monoalphabetic cipher with no other encryption features, it is vulnerable to frequency analysis attacks. Therefore, it does not provide robust security. However, it is good enough to make messages unreadable to casual observers.
TheLetterEncrypter is suitable for short, non-sensitive messages, but not for protecting highly confidential information. It is free to download and open-source, allowing users to inspect and verify the encryption algorithm.
Encrypted Notepad, Notebook PEA, Crypto Notepad, Locknote, CryptoTE, NPPCrypt, Paranoia Text Encryption, fSekrit, CTI Text Encryption, YAEN - Yet Another Encrypted Notepad, CryptoPad are some alternatives to TheLetterEncrypter.