[#DecodeExtKey]
= DecodeExtKey
:mrdocs:

Decode a Base58Check‐encoded extended private key.

== Synopsis

Declared in `<key_io.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CExtKey.adoc[CExtKey]
DecodeExtKey(std::string const& str);
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== Return Value

The decoded extended key, or an invalid key on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *str*
| The encoded string to decode.
|===


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