Encryption is a great tool to protect your information, once a file has been encrypted it’s almost impossible for anyone to be able to know the contents of the file. The file is protected with a key (usually a password). The only way to read the file would be to decrypt the file by typing in the password.
First, you will find a secret message our friend Sam has sent you.
Once you find his encrypted file, the only way to read it is to decrypt it
After you've read his message, it is time to send him an encrypted message back and delete all decrypted files