TX Encrypt Pro(Mac Version) is a simple but useful tool to encrypt/decrypt any text(such as SNS messages, emails or memo contents) by four strong encryption method(Base 64, TXBE, TXTE, TXDEE) you could choose from, the result is guaranteed to be visible text as well. Just type or paste your text to be encrypt/decrypt and touch the proper button to get the result. Then copy and paste it any where you want. Good luck. It has the ability to handle with large amount of text.