Encrypt a password

The fglpass tool can encrypt a password using an RSA key or certificate, and then encode it in BASE64 form. This allows you to easily add a protected password in the FGLPROFILE file for future use by any BDL application.

To encrypt a password from an RSA key and encoded in BASE64, enter:
```
fglpass -e -k RSAPub.pem
```
You are prompted to enter the password you want to encrypt.
```
Enter password :hello
```
The fglpass tool outputs the BASE64 form of the encrypted password on the console.
```
BASE64 BEGIN
Pzk/fNRhetdJDZz5kjNg7P0XET4XsW6bys/fi0DvugxRPh9d/s41oAws65
JY0EPb2zytQjxZ/dwaaRzJPYoQmA==
BASE64 END
```
Note: The BASE64 encrypted password is the string between the BASE64 BEGIN and BASE64 END.