Historical
ANSI X9.73-2017
Cryptographic Message Syntax - ASN.1 and XML
This standard specifies a cryptographic syntax scheme that can be used to protect financial transactions, files and other messages from unauthorized disclosure and modification. The cryptographic syntax scheme is based on an abstract Cryptographic Message Syntax (CMS) schema whose concrete values can be represented using either a compact, efficient, binary encoding, or as a flexible, human-readable, XML markup format.
Accredited Standards Committee, Inc. - Financial Industry Standards [ascx9]