.Dd $Mdocdate: December 19 2022 $
.Dt SHA2 3
.Os Telodendria Project
.Sh NAME
.Nm Sha2
.Nd A simple implementation of the SHA2 hashing functions.
.Sh SYNOPSIS
.In Sha2.h
.Ft char *
.Fn Sha256 "char *"
.Sh DESCRIPTION
.Pp
This API defines simple functions for computing SHA2 hashes. At the
moment, it only defines
.Fn Sha256 ,
which computes the SHA-256 hash of the given C string. It is not trivial
to implement SHA-512 in ANSI C due to the lack of a 64-bit integer
type, so that hash function has been omitted.
.Sh RETURN VALUES
.Pp
.Fn Sha256
returns a string allocated on the heap using the Memory API, or NULL
if there was an error allocating memory for it. The returned string
should be freed when it is no longer needed.
.Sh SEE ALSO
.Xr Memory 3 ,
.Xr Base64 3