.\" DO NOT MODIFY THIS FILE! It was generated by gdoc. .TH "gnutls_x509_ext_export_key_purposes" 3 "3.8.4" "gnutls" "gnutls" .SH NAME gnutls_x509_ext_export_key_purposes \- API function .SH SYNOPSIS .B #include .sp .BI "int gnutls_x509_ext_export_key_purposes(gnutls_x509_key_purposes_t " p ", gnutls_datum_t * " ext ");" .SH ARGUMENTS .IP "gnutls_x509_key_purposes_t p" 12 The key purposes .IP "gnutls_datum_t * ext" 12 The DER\-encoded extension data; must be freed using \fBgnutls_free()\fP. .SH "DESCRIPTION" This function will convert the key purposes type to a DER\-encoded PKIX ExtKeyUsageSyntax (2.5.29.37) extension. The output data in \fIext\fP will be allocated using \fBgnutls_malloc()\fP. .SH "RETURNS" On success, \fBGNUTLS_E_SUCCESS\fP (0) is returned, otherwise a negative error value. .SH "SINCE" 3.3.0 .SH "REPORTING BUGS" Report bugs to . .br Home page: https://www.gnutls.org .SH COPYRIGHT Copyright \(co 2001-2023 Free Software Foundation, Inc., and others. .br Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. .SH "SEE ALSO" The full documentation for .B gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit .B .IP https://www.gnutls.org/manual/ .PP