The Interpretive ASN.1 API

Applies to: ASN.1/C v11.3-11.3.1


The Interpretive ASN.1 API (IAAPI) enables applications to create and encode data described by ASN.1 structures without any prior knowledge of the original ASN.1 specification (for example, the number of components and their base types). Messages (PDUs) can be decoded and their components can be individually accessed and modified from an easy-to-use interface.

The IAAPI is available on common platforms (Windows, Linux, and Solaris, for example). For more information about installing the IAAPI on your platform, contact Sales <>.

This documentation applies to the OSS® ASN.1 Tools for C release 11.3 and later.

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