X.509 certificate information can be encoded and exchanged in various standardized formats. One of these formats is the KeyInfo representation defined in the W3C XML Signature recommendation. This is an XML-based representation that wraps the Base64 encoded X.509 certificate and can provided additional information (such as certificate digests or key names). 

The /n software Adapters for Microsoft BizTalk include fully-managed .NET Adapters that seamlessly integrate with the BizTalk Messaging Pipeline. The /n software Adapters extend the features of BizTalk with advanced Internet communications and secure messaging capabilities.

[The new] AS4 adapter [..] is used to both send and receive EDI documents. 

The CPPA3 package provides a collection of open source Python modules to process OASIS ebCore CPPA3 documents and related functionality. CPPA3 is the version 3 of the ebXML Collaboration Protocol Profile and Agreement specification, currently under development.