These programs are freeware with banners.

Secret Rename 3.0 - use for encrypt folder and its subfolder.
Secret Pad 1.0 - use for encrypt text file.

Program may error sometimes.
Use it at your own risk.

Terms and Conditions
1. I'm not responsible if you can not decrypt your files to original files.
2. No warranty that encrypted files will not be decrypted or be open by any hacker.
3. When you use this program, you agree to the terms and conditions.