[#BN_BLINDING_update]
= BN&lowbar;BLINDING&lowbar;update
:mrdocs:

Refresh a BN&lowbar;BLINDING object by squaring its blinding factors&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BN&lowbar;BLINDING&lowbar;update(
    xref:BN_BLINDING.adoc[BN&lowbar;BLINDING]* b,
    xref:BN_CTX.adoc[BN&lowbar;CTX]* ctx);
----

== Return Value

1 on success, or 0 on failure&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b*
| Blinding state to update&period;
| *ctx*
| BN&lowbar;CTX for temporaries&period;
|===


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