[#EC_KEY_priv2oct]
= EC_KEY_priv2oct
:mrdocs:

Encodes a EC_KEY private key to an octet string

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
size_t
EC_KEY_priv2oct(
    xref:EC_KEY.adoc[EC_KEY] const* key,
    unsigned char* buf,
    size_t len);
----

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

the length of the encoded octet string or 0 if an error occurred

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| key to encode
| *buf*
| memory buffer for the result. If NULL the function returns required buffer size.
| *len*
| length of the memory buffer
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#