[#RAND_get0_primary]
= RAND_get0_primary
:mrdocs:

Return the shared primary DRBG for a library context (used to reseed public/private DRBGs).

== Synopsis

Declared in `<openssl/rand.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:EVP_RAND_CTX.adoc[EVP_RAND_CTX]*
RAND_get0_primary(xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]* ctx);
----

== Return Value

Internal EVP_RAND_CTX pointer (do not free); not safe for concurrent direct use.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Library context, or NULL for the default.
|===


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