AS2

Applicability Statement 2 (AS2 ) is a standard via a secure message transport over the Internet. It is described in detail in RFC 4130th

With AS2 mostly news for Electronic Data Interchange ( EDI ) are transmitted.

AS2 specifies how to connect to and validated messages sent and confirmed. It creates an envelope for a message that will be sent then secured over the Internet. The authorship (not abstreitbare message) is guaranteed by digital signatures and data security through encryption. The sender receives from the AS2 protocol, a digital delivery receipt, in the AS- language Message Disposition Notification (MDN ), designated by the sender can prove the timely delivery.

AS2 is a transmission standard, which was developed specifically for e-commerce. Unlike other transmission standards such as e -mail, X.400, ISDN, FTP, etc., which are also, but not exclusively used in a business context, AS2 is designed from the ground up just for a business use. Characteristic difference to other transmission standards is that the user does not depend on proof of audit compliance to technical protocols ( need to bring out the example network specialists only from the systems ), but with the MDN has the proof in message form.

History

The standardization of AS2 was the Internet Engineering Task Force ( IETF) working group in the Electronic Data Interchange - Internet Integration ( EDIINT ). The first name of AS2 is in 1997 still "HTTP Transport for Secure EDI". During the standardization of the name in 2002 then moved to AS2, because in the meantime also other means of communication for secure EDI message exchange were standardized in a similar logic to the MDN as AS2. The adopted version of AS2 came out in 2005 as RFC 4130th

In addition to AS2 there is AS1 and AS3, but have hardly been spread because most business messages either are time-critical and to ensure better over HTTP, this is as about mail ( = AS1) or the connection to be easily completed with HTTP instead of FTP ( = AS3).