[#PBE2PARAM_st-keyfunc]
= xref:PBE2PARAM_st.adoc[PBE2PARAM_st]::keyfunc
:relfileprefix: ../
:mrdocs:

Key derivation function AlgorithmIdentifier (for example PBKDF2).

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:X509_ALGOR.adoc[X509_ALGOR]* keyfunc;
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