[#EC_KEY_set_private_key]
= EC_KEY_set_private_key
:mrdocs:

Sets the private key of a EC_KEY object.

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
EC_KEY_set_private_key(
    xref:EC_KEY.adoc[EC_KEY]* key,
    xref:BIGNUM.adoc[BIGNUM] const* prv);
----

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

1 on success and 0 if an error occurred.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| EC_KEY object
| *prv*
| BIGNUM with the private key (note: the EC_KEY object will use an own copy of the BIGNUM).
|===


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