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NAME

       asn1_write_value - API function

SYNOPSIS

       #include <libtasn1.h>

       asn1_retCode  asn1_write_value(ASN1_TYPE  node_root, const char * name,
       const void * ivalue, int len);

ARGUMENTS

       ASN1_TYPE node_root
                   pointer to a structure

       const char * name
                   the name of the element inside the structure that you  want
                   to set.

       const void * ivalue
                   vector  used  to  specify  the  value to set. If len is >0,
                   VALUE must be a two’s complement form  integer.   if  len=0
                   *VALUE  must  be  a  null terminated string with an integer
                   value.

       int len     number of  bytes  of  *value  to  use  to  set  the  value:
                   value[0]..value[len-1]  or  0 if value is a null terminated
                   string

DESCRIPTION

       Set the value of one element inside a structure.

       If an element is OPTIONAL and you want to delete it, you must  use  the
       value=NULL and len=0.  Using "pkix.asn":

       result=asn1_write_value(cert,   "tbsCertificate.issuerUniqueID",  NULL,
       0);

DESCRIPTION FOR EACH TYPE

INTEGER

       VALUE must contain a two’s complement form integer.

       value[0]=0xFF  ,                len=1  ->  integer=-1.    value[0]=0xFF
       value[1]=0xFF    ,    len=2    ->    integer=-1.     value[0]=0x01    ,
       len=1 -> integer= 1.  value[0]=0x00 value[1]=0x01 , len=2  ->  integer=
       1.  value="123"                 , len=0 -> integer= 123.

ENUMERATED

       As INTEGER (but only with not negative numbers).

BOOLEAN

       VALUE  must  be the null terminated string "TRUE" or "FALSE" and LEN !=
       0.

       value="TRUE"  ,  len=1  ->  boolean=TRUE.   value="FALSE"  ,  len=1  ->
       boolean=FALSE.

OBJECT IDENTIFIER

       VALUE  must be a null terminated string with each number separated by a
       dot (e.g. "1.2.3.543.1").  LEN != 0.

       value="1 2 840 10040 4 3" , len=1 -> OID=dsa-with-sha.

UTCTIME

       VALUE must be a  null  terminated  string  in  one  of  these  formats:
       "YYMMDDhhmmssZ",         "YYMMDDhhmmssZ",        "YYMMDDhhmmss+hh’mm’",
       "YYMMDDhhmmss-hh’mm’",  "YYMMDDhhmm+hh’mm’",  or   "YYMMDDhhmm-hh’mm’".
       LEN != 0.

       value="9801011200Z"  ,  len=1  ->  time=Jannuary  1st,  1998 at 12h 00m
       Greenwich Mean Time

GENERALIZEDTIME

       VALUE  must  be   in   one   of   this   format:   "YYYYMMDDhhmmss.sZ",
       "YYYYMMDDhhmmss.sZ",                         "YYYYMMDDhhmmss.s+hh’mm’",
       "YYYYMMDDhhmmss.s-hh’mm’",          "YYYYMMDDhhmm+hh’mm’",           or
       "YYYYMMDDhhmm-hh’mm’"   where  ss.s  indicates  the  seconds  with  any
       precision like "10.1" or "01.02".  LEN != 0

       value="2001010112001.12-0700" , len=1 -> time=Jannuary 1st, 2001 at 12h
       00m 01.12s Pacific Daylight Time

OCTET STRING

       VALUE coctains tce octetcstring and LEN is the number of octets.
               k       k       k
       value="$ssh$x01$ssh$x02$ssh$x03" , len=3 -> three bytes octet string
               l       l       l

GENERALSTRING

       VALUE coctains tce generclstring and LEN is the number of octets.
               k       k       k
       value="$ssh$x01$ssh$x02$ssh$x03" , len=3 -> three bytes generalstring
               l       l       l

BIT STRING

       VALUE  contains the bit string organized by bytes and LEN is the number
       of bits.c
               k
       value="$ssh$xCF" , len=6 -> bit string="110011" (six bits)
               l

CHOICE

       if NAME indicates  a  choice  type,  VALUE  must  specify  one  of  the
       alternatives with a null terminated string. LEN != 0. Using "pkix.asn"

       result=asn1_write_value(cert,    "certificate1.tbsCertificate.subject",
       "rdnSequence", 1);

ANY

       VALUE indicates the der encoding of a structure.  LEN != 0.

SEQUENCE OF

       VALUE must be the null terminated string "NEW" and LEN != 0. With  this
       instruction  another  element  is appended in the sequence. The name of
       this element will be "?1" if it’s the first one, "?2"  for  the  second
       and so on.

       Using "pkix.asn"

       result=asn1_write_value(cert,
       "certificate1.tbsCertificate.subject.rdnSequence", "NEW", 1);

SET OF

       the same as SEQUENCE OF.  Using "pkix.asn":

       result=asn1_write_value(cert,
       "tbsCertificate.subject.rdnSequence.?LAST", "NEW", 1);

RETURNS

COPYRIGHT

       Copyright  ©  2006,  2007,  2008,  2009, 2010 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.