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asn1_get_length_der(3)             libtasn1             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 (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_get_length_der(3)