[#SHA256_Init]
= SHA256_Init
:mrdocs:

Initialise a SHA‐256 digest context (deprecated; prefer EVP_DigestInit_ex).

== Synopsis

Declared in `<openssl/sha.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
SHA256_Init(xref:SHA256_CTX.adoc[SHA256_CTX]* c);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *c*
| Context to initialise.
|===


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