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.\" $OpenBSD: X509_new.3,v 1.3 2016/12/03 13:36:03 jmc Exp $
.\"
.Dd $Mdocdate: December 3 2016 $
.Dt X509_NEW 3
.Os
.Sh NAME
.Nm X509_new ,
.Nm X509_free
.Nd X509 certificate ASN.1 allocation functions
.Sh SYNOPSIS
.In openssl/x509.h
.Ft X509 *
.Fn X509_new void
.Ft void
.Fo X509_free
.Fa "X509 *a"
.Fc
.Sh DESCRIPTION
The X509 ASN.1 allocation routines allocate and free an
.Vt X509
structure, which represents an X509 certificate.
.Pp
.Fn X509_new
allocates and initializes a X509 structure.
.Pp
.Fn X509_free
frees up the
.Vt X509
structure
.Fa a .
If
.Fa a
is a
.Dv NULL
pointer, no action occurs.
.Sh RETURN VALUES
If the allocation fails,
.Fn X509_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 d2i_X509 3 ,
.Xr ERR_get_error 3
.Sh HISTORY
.Fn X509_new
and
.Fn X509_free
are available in all versions of SSLeay and OpenSSL.
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