[#OSSL_PARAM_construct_BN]
= OSSL_PARAM_construct_BN
:mrdocs:

Construct an OSSL_PARAM describing an arbitrary‐precision integer in `buf.`

== Synopsis

Declared in `<openssl/params.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_PARAM.adoc[OSSL_PARAM]
OSSL_PARAM_construct_BN(
    char const* key,
    unsigned char* buf,
    size_t bsize);
----

== Return Value

OSSL_PARAM suitable for inclusion in a parameter array.

== Parameters

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


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