asn1_length_der(3) libtasn1 asn1_length_der(3)

NAME

asn1_length_der - API function

SYNOPSIS

#include <libtasn1.h>

void asn1_length_der(unsigned long int len, unsigned char * der, int
* der_len);

ARGUMENTS

unsigned long int len
value to convert.

unsigned char * der
buffer to hold the returned encoding (may be NULL).

int * der_len
number of meaningful bytes of ANS
(der[0]..der[der_len-1]).

DESCRIPTION

Creates the DER encoding of the provided length value. The der
buffer must have enough room for the output. The maximum length this
function will encode is ASN1_MAX_LENGTH_SIZE.

To know the size of the DER encoding use a NULL value for der .

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_length_der(3)