[#BN_GENCB]
= BN_GENCB
:mrdocs:

Progress‐callback object used by prime generation and similar BN routines.

== Synopsis

Declared in `<openssl/types.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef xref:bn_gencb_st.adoc[bn_gencb_st] BN_GENCB;
----


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