[#SHA256state_st]
= SHA256state_st
:mrdocs:

Incremental SHA‐224 / SHA‐256 digest state (also typedef'd as SHA256_CTX); deprecated low‐level API.

== Synopsis

Declared in `<openssl/sha.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct SHA256state_st;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:SHA256state_st/Nh.adoc[`Nh`] 
| Low and high 32‐bit halves of the bit‐length counter.
| xref:SHA256state_st/Nl.adoc[`Nl`] 
| Low and high 32‐bit halves of the bit‐length counter.
| xref:SHA256state_st/data.adoc[`data`] 
| Partial input block being accumulated (SHA_LBLOCK words).
| xref:SHA256state_st/h.adoc[`h`] 
| Working hash state H0..H7 (eight 32‐bit words).
| xref:SHA256state_st/md_len.adoc[`md_len`] 
| Bytes buffered in `data,` and configured digest length (SHA‐224 vs SHA‐256).
| xref:SHA256state_st/num.adoc[`num`] 
| Bytes buffered in `data,` and configured digest length (SHA‐224 vs SHA‐256).
|===



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