asn1_get_length_der(3)

NAME
asn1_get_length_der - API function

SYNOPSIS
#include <libtasn1.h>

long asn1_get_length_der(const unsigned char * der, int der_len, int * len);

ARGUMENTS

const unsigned char * der
    DER data to decode.

int der_len
    Length of DER data to decode.

int * len
    Output variable containing the length of the DER length field.

DESCRIPTION
Extract a length field from DER data.

RETURNS
Return the decoded length value, or -1 on indefinite length, or -2 when the value was too big to fit in a int, or -4 when the decoded length value plus len would exceed der_len .

COPYRIGHT
Copyright © 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/