.\" DO NOT MODIFY THIS FILE! It was generated by gdoc. .TH "gnutls_x509_crt_set_extension_by_oid" 3 "3.8.4" "gnutls" "gnutls" .SH NAME gnutls_x509_crt_set_extension_by_oid \- API function .SH SYNOPSIS .B #include .sp .BI "int gnutls_x509_crt_set_extension_by_oid(gnutls_x509_crt_t " crt ", const char * " oid ", const void * " buf ", size_t " sizeof_buf ", unsigned int " critical ");" .SH ARGUMENTS .IP "gnutls_x509_crt_t crt" 12 a certificate of type \fBgnutls_x509_crt_t\fP .IP "const char * oid" 12 holds an Object Identifier in null terminated string .IP "const void * buf" 12 a pointer to a DER encoded data .IP "size_t sizeof_buf" 12 holds the size of \fIbuf\fP .IP "unsigned int critical" 12 should be non\-zero if the extension is to be marked as critical .SH "DESCRIPTION" This function will set an the extension, by the specified OID, in the certificate. The extension data should be binary data DER encoded. .SH "RETURNS" On success, \fBGNUTLS_E_SUCCESS\fP (0) is returned, otherwise a negative error value. .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