[#EVP_KEM_do_all_provided]
= EVP_KEM_do_all_provided
:mrdocs:

Call `fn` for every KEM algorithm available from providers in `libctx.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
EVP_KEM_do_all_provided(
    xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]* libctx,
    void(* fn)(xref:EVP_KEM.adoc[EVP_KEM]*, void*),
    void* arg);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *libctx*
| Library context to search, or NULL for the default.
| *fn*
| Callback invoked with each EVP_KEM and `arg.`
| *arg*
| User argument forwarded to `fn.`
|===


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