.\" $OpenBSD: EVP_sm3.3,v 1.1 2019/08/25 17:08:20 schwarze Exp $
.\" full merge up to: OpenSSL 21ebd2fc Aug 24 20:38:04 2018 +0800
.\"
.\" This file was written by Jack Lloyd <jack.lloyd@ribose.com>
.\" and Ronald Tse <ronald.tse@ribose.com>.
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.Dd $Mdocdate: August 25 2019 $
.Dt EVP_SM3 3
.Os
.Sh NAME
.Nm EVP_sm3
.Nd SM3 hash function for EVP
.Sh SYNOPSIS
.In openssl/evp.h
.Ft const EVP_MD *
.Fn EVP_sm3 void
.Sh DESCRIPTION
SM3 is a cryptographic hash function with a 256-bit output.
It is part of the Chinese
.Dq Commercial Cryptography
suite of algorithms which is required
for certain commercial applications in China.
.Sh RETURN VALUES
.Fn EVP_sm3
returns a pointer to a static
.Vt EVP_MD
object implementing the SM3 hash function.
.Sh SEE ALSO
.Xr evp 3 ,
.Xr EVP_DigestInit 3
.Sh STANDARDS
GB/T 32905-2016 and GM/T 0004-2012
.Sh HISTORY
.Fn EVP_sm3
first appeared in OpenSSL 1.1.1 and has been available since
.Ox 6.5 .