[#CHMAC_SHA256]
= CHMAC_SHA256
:mrdocs:

A hasher class for HMAC‐SHA‐256.

== Synopsis

Declared in `<crypto/hmac_sha256.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class CHMAC_SHA256;
----

== Member Functions

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


== Static Data Members

[cols="1,4"]
|===
| Name| Description
| xref:CHMAC_SHA256/OUTPUT_SIZE.adoc[`OUTPUT_SIZE`] 
| Size of the HMAC‐SHA‐256 output in bytes.
|===



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