[#BASIC_CONSTRAINTS_st-ca]
= xref:BASIC_CONSTRAINTS_st.adoc[BASIC_CONSTRAINTS_st]::ca
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:mrdocs:

Non‐zero if the subject may act as a certification authority.

== Synopsis

Declared in `<openssl/x509v3.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int ca;
----


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