Published
This Recommendation | International Standard enhances the existing cryptographic message syntax (CMS) protocol by adding signcryption techniques and providing a new Abstract Syntax Notation One (ASN.1) module which conforms to the latest edition of the ASN.1 standard which can be used with all standardized encoding rules of ASN.1.
PUBLISHED
ISO/IEC 24824-4:2021
90.20
Standard under periodical review
Jan 15, 2026
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