[#EVP_PKEY_save_parameters]
= EVP_PKEY_save_parameters
:mrdocs:

Control whether algorithm parameters are written when serializing `pkey.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_save_parameters(
    xref:EVP_PKEY.adoc[EVP_PKEY]* pkey,
    int mode);
----

== Return Value

Previous mode value.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pkey*
| Key whose parameter‐export preference is updated.
| *mode*
| Non‐zero to include parameters on output, or 0 to omit them when possible.
|===


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