Dane,
If you are looking for EDI options then you can use EDIINT(AS2)message for transmitting the data with Signed/Encryption way.this makes data more secure and reliable.This process was used by widely used by banks,manufacturing,financial service sectors etc…
Please go thru the EDIINTUserguide for more information.
Also search in this site for EDINT related topics,you will see some good results.
HTH,
RMG
#Integration-Server-and-ESB#edi#webMethods