send files over internet

[Michel_v_Duijse]

Hi,

this is more a general question:

i have to send a file from a to b.
Usually i accomplish that by a filecopy, but these are seperate machines.
I can also create a webpage/html form on one side with a [browse] button and let the user select a file and call a php or asp script on the other side and save it there.

But, is there another way?
It must be over TCP-IP, and i would like to send it from a program, without users intervention.
if it's a web or windows program doesn't matter (on the send side), on the receiver side it must be a webprogram, because the program must require a certificate.
I used to program a windows program which called the smtp component in visual basic and send email this way.
Now i want to send a file and i realy don't have any clue how to send it and how to receive it.

On top of it, i must send a certificate with the file, to proove the sender is the real one.

i hope you have good ideas, my boss is on my tail :-(

[ray326]

That's exactly what FTP was designed to do. Rather than "send a certificate" a more secure means would be public key encryption of the image. Encrypt it with your private key and let the receiver decrypt it with your public key.