[#SSL_CTX_set_security_callback]
= SSL_CTX_set_security_callback
:mrdocs:

Install a security‐policy callback used by connections created from a context.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
SSL_CTX_set_security_callback(
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    int(* cb)(xref:SSL.adoc[SSL] const*, xref:SSL_CTX.adoc[SSL_CTX] const*, int, int, int, void*, void*));
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| SSL context whose connections inherit `cb.`
| *cb*
| Security callback, or NULL to restore the default; see SSL_CTX_set_security_level(3).
|===


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