[#RSA_meth_set_multi_prime_keygen]
= RSA_meth_set_multi_prime_keygen
:mrdocs:

Set the multi‐prime key‐generation callback on a custom RSA_METHOD (deprecated).

== Synopsis

Declared in `<openssl/rsa.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
RSA_meth_set_multi_prime_keygen(
    xref:RSA_METHOD.adoc[RSA_METHOD]* meth,
    int(* keygen)(xref:RSA.adoc[RSA]*, int, int, xref:BIGNUM.adoc[BIGNUM]*, xref:BN_GENCB.adoc[BN_GENCB]*));
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

1 on success.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *meth*
| Method object to update.
| *keygen*
| Callback implementing multi‐prime RSA key generation, or NULL.
|===


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