[#EVP_PKEY_fromdata]
= EVP_PKEY_fromdata
:mrdocs:

Build an EVP_PKEY (or parameters) from an OSSL_PARAM array after fromdata_init.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_fromdata(
    xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx,
    xref:EVP_PKEY.adoc[EVP_PKEY]** ppkey,
    int selection,
    xref:OSSL_PARAM.adoc[OSSL_PARAM] param[]);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Context previously prepared with EVP_PKEY_fromdata_init().
| *ppkey*
| Destination that receives the created EVP_PKEY on success.
| *selection*
| OSSL_KEYMGMT_SELECT_* mask describing which key parts `param` supplies.
| *param*
| NULL‐terminated OSSL_PARAM array of key material / parameters.
|===


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