asn1_read_tag(3)                   libtasn1                   asn1_read_tag(3)

NAME
       asn1_read_tag - API function

SYNOPSIS
       #include <libtasn1.h>

       int asn1_read_tag(asn1_node_const root, const char * name, int *
       tagValue, int * classValue);

ARGUMENTS
       asn1_node_const root
                   pointer to a structure

       const char * name
                   the name of the element inside a structure.

       int * tagValue
                   variable that will contain the TAG value.

       int * classValue
                   variable that will specify the TAG type.

DESCRIPTION
       Returns the TAG and the CLASS of one element inside a structure.  CLASS
       can have one of these constants: ASN1_CLASS_APPLICATION,
       ASN1_CLASS_UNIVERSAL, ASN1_CLASS_PRIVATE or
       ASN1_CLASS_CONTEXT_SPECIFIC.

RETURNS
       ASN1_SUCCESS if successful, ASN1_ELEMENT_NOT_FOUND if
        name is not a valid element.

COPYRIGHT
       Copyright (C) 2006-2022 Free Software Foundation, Inc..
       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.

SEE ALSO
       The full documentation for libtasn1 is maintained as a Texinfo manual.
       If the info and libtasn1 programs are properly installed at your site,
       the command

              info libtasn1

       should give you access to the complete manual.  As an alternative you
       may obtain the manual from:

              https://www.gnu.org/software/libtasn1/manual/

libtasn1                            4.19.0                    asn1_read_tag(3)