AS1 (networking)
Encyclopedia
AS1 is a specification about how to transport data securely and reliably over the Internet
. Security is achieved by using digital certificates and encryption
.
conventions. In other words:
Like any other AS file transfer, AS1 file transfers typically require both sides of the exchange to trade SSL certificates and specific "trading partner" names before any transfers can take place.
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...
. Security is achieved by using digital certificates and encryption
Encryption
In cryptography, encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information...
.
AS1 Technical Overview
The AS1 protocol is based on SMTP and S/MIME. It was the first AS protocol developed and uses signing, encryption and MDNReturn receipt
A return receipt is a postal service document confirming the arrival of a message or parcel at its intended destination. Internationally, the service is known as avis de réception , but in some English-speaking countries, acknowledgement of receipt or advice of receipt is used.-Email:As applied to...
conventions. In other words:
- Files are sent as "attachments" in a specially coded SMIME email message
- Messages can be signed, but do not have to be
- Messages can be encrypted, but do not have to be
- Messages may request an MDN back if all went well, but do not have to request such a message
- If the original AS1 message requested an MDN...
- Upon the receipt of the message and its successful decryption or signature validation (as necessary) a "success" MDN will be sent back to the original sender. This MDN is typically signed but not encrypted.
- Upon the receipt and successful verification of the signature on the MDN, the original sender will "know" that the recipient got their message (this provides the "Non-repudiation" element of AS1)
- If there are any problems receiving or interpreting the original AS1 message, a "failed" MDN may be sent back.
- Upon the receipt of the message and its successful decryption or signature validation (as necessary) a "success" MDN will be sent back to the original sender. This MDN is typically signed but not encrypted.
Like any other AS file transfer, AS1 file transfers typically require both sides of the exchange to trade SSL certificates and specific "trading partner" names before any transfers can take place.
External links
- AS1 Specification, RFC 3335 AS1 specification as listed in RFCRequest for CommentsIn computer network engineering, a Request for Comments is a memorandum published by the Internet Engineering Task Force describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems.Through the Internet Society, engineers and...
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