asn1_get_tag_der(3) libtasn1 asn1_get_tag_der(3)
asn1_get_tag_der - API function
#include <libtasn1.h>
int asn1_get_tag_der(const unsigned char * der, int der_len, unsigned
char * cls, int * len, unsigned long * tag);
const unsigned char * der
DER data to decode.
int der_len Length of DER data to decode.
unsigned char * cls
Output variable containing decoded class.
int * len Output variable containing the length of the DER TAG
data.
unsigned long * tag
Output variable containing the decoded tag (may be NULL).
Decode the class and TAG from DER code.
Returns ASN1_SUCCESS on success, or an error.
Copyright (C) 2006-2025 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.
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 4.21.0 asn1_get_tag_der(3)
NAME
asn1_get_tag_der - API function
SYNOPSIS
#include <libtasn1.h>
int asn1_get_tag_der(const unsigned char * der, int der_len, unsigned
char * cls, int * len, unsigned long * tag);
ARGUMENTS
const unsigned char * der
DER data to decode.
int der_len Length of DER data to decode.
unsigned char * cls
Output variable containing decoded class.
int * len Output variable containing the length of the DER TAG
data.
unsigned long * tag
Output variable containing the decoded tag (may be NULL).
DESCRIPTION
Decode the class and TAG from DER code.
RETURNS
Returns ASN1_SUCCESS on success, or an error.
COPYRIGHT
Copyright (C) 2006-2025 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 4.21.0 asn1_get_tag_der(3)