.\"	$OpenBSD: DSA_SIG_new.3,v 1.4 2016/12/10 22:47:49 schwarze Exp $
.\"	OpenSSL a528d4f0 Oct 27 13:40:11 2015 -0400
.\"
.\" This file was written by Ulf Moeller <ulf@openssl.org>.
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.Dd $Mdocdate: December 10 2016 $
.Dt DSA_SIG_NEW 3
.Os
.Sh NAME
.Nm DSA_SIG_new ,
.Nm DSA_SIG_free
.Nd allocate and free DSA signature objects
.Sh SYNOPSIS
.In openssl/dsa.h
.Ft DSA_SIG *
.Fn DSA_SIG_new void
.Ft void
.Fo DSA_SIG_free
.Fa "DSA_SIG *a"
.Fc
.Sh DESCRIPTION
.Fn DSA_SIG_new
allocates and initializes a
.Vt DSA_SIG
structure.
.Pp
.Fn DSA_SIG_free
frees the
.Vt DSA_SIG
structure and its components.
The values are erased before the memory is returned to the system.
If
.Fa a
is a
.Dv NULL
pointer, no action occurs.
.Sh RETURN VALUES
If the allocation fails,
.Fn DSA_SIG_new
returns
.Dv NULL
and sets an error code that can be obtained by
.Xr ERR_get_error 3 .
Otherwise it returns a pointer to the newly allocated structure.
.Sh SEE ALSO
.Xr DSA_do_sign 3 ,
.Xr DSA_new 3 ,
.Xr ERR_get_error 3
.Sh HISTORY
.Fn DSA_SIG_new
and
.Fn DSA_SIG_free
were added in OpenSSL 0.9.3.