[#CExtKey-SetSeed]
= xref:CExtKey.adoc[CExtKey]::SetSeed
:relfileprefix: ../
:mrdocs:

Initialize this extended key as a master key from a seed&period;

== Synopsis

Declared in `&lt;key&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
SetSeed(std::span&lt;std::byte const&gt; seed);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *seed*
| The seed bytes used to derive the master key&period;
|===


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