[#EVP_PKEY_get_raw_private_key]
= EVP_PKEY_get_raw_private_key
:mrdocs:

Export the raw private key bytes of `pkey` into `priv.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_get_raw_private_key(
    xref:EVP_PKEY.adoc[EVP_PKEY] const* pkey,
    unsigned char* priv,
    size_t* len);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pkey*
| Key whose private material is exported (algorithm‐dependent format).
| *priv*
| Output buffer, or NULL to only query the required length via `len.`
| *len*
| On entry, capacity of `priv` when non‐NULL; on return, number of bytes written or required.
|===


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