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 © 2006-2022 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/