[#x509_purpose_st-check_purpose]
= xref:x509_purpose_st.adoc[x509_purpose_st]::check_purpose
:relfileprefix: ../
:mrdocs:

Callback that evaluates whether a certificate satisfies this purpose.

== Synopsis

Declared in `<openssl/x509v3.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int(* check_purpose)(xref:x509_purpose_st.adoc[x509_purpose_st] const*, xref:X509.adoc[X509] const*, int);
----


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