Hi! I am somewhat new to cryptography, so please bare with me.

I need to write a simple FTP client, that would send data in an encrypted format, 
either using PGP or SSL. The machine the client would be located on, would be a stand 
alone box with a modem that connects directly to a server with a commercial FTP server 
with SSL incorporated into it. Both the client and server machines, are stand alone 
boxes with no access to the internet.

The questions I have are as follows:

1) Can we get away with implementing the client to go without out using digital 
certificates that have to be verified by a certificate authenticator ? 

2) Would self generated key pairs suffice (using req for instance), or must the keys 
be generated by a recognized issuer?

3) What libraries if any are required at run time? Or would the FTP client binary be 
portable without having to install supporting libraries?

Thanks!

Hnau

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