[#OSSL_PARAM_construct_BN]
= OSSL&lowbar;PARAM&lowbar;construct&lowbar;BN
:mrdocs:

Construct an OSSL&lowbar;PARAM describing an arbitrary&hyphen;precision integer in `buf&period;`

== Synopsis

Declared in `&lt;openssl&sol;params&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_PARAM.adoc[OSSL&lowbar;PARAM]
OSSL&lowbar;PARAM&lowbar;construct&lowbar;BN(
    char const* key,
    unsigned char* buf,
    size&lowbar;t bsize);
----

== Return Value

OSSL&lowbar;PARAM suitable for inclusion in a parameter array&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| Parameter name&period;
| *buf*
| Buffer holding (or receiving) the BN in native unsigned big&hyphen;endian form&period;
| *bsize*
| Capacity of `buf` in bytes&period;
|===


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