[#EVP_PKEY_CTX_get0_libctx]
= EVP_PKEY_CTX_get0_libctx
:mrdocs:

Return the library context associated with a key algorithm context.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]*
EVP_PKEY_CTX_get0_libctx(xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx);
----

== Return Value

OSSL_LIB_CTX used when `ctx` was constructed, or NULL for the default.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Key context to query.
|===


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