[#CHMAC_SHA256]
= CHMAC&lowbar;SHA256
:mrdocs:

A hasher class for HMAC&hyphen;SHA&hyphen;256&period;

== Synopsis

Declared in `&lt;crypto&sol;hmac&lowbar;sha256&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class CHMAC&lowbar;SHA256;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:CHMAC_SHA256/2constructor.adoc[`CHMAC&lowbar;SHA256`]         [.small]#[constructor]#
| Initialize the HMAC with a secret key&period;
| xref:CHMAC_SHA256/Finalize.adoc[`Finalize`] 
| Produce the MAC of all data written so far&period;
| xref:CHMAC_SHA256/Write.adoc[`Write`] 
| Absorb more data into the MAC&period;
|===


== Static Data Members

[cols="1,4"]
|===
| Name| Description
| xref:CHMAC_SHA256/OUTPUT_SIZE.adoc[`OUTPUT&lowbar;SIZE`] 
| Size of the HMAC&hyphen;SHA&hyphen;256 output in bytes&period;
|===



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