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asn1_write_value(3)			     libtasn1			      asn1_write_value(3)

NAME
       asn1_write_value - API function

SYNOPSIS
       #include <libtasn1.h>

       int  asn1_write_value(asn1_node	node_root,  const  char  * name, const void * ivalue, int
       len);

ARGUMENTS
       asn1_node 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", "YYMMD-
       DhhmmssZ", "YYMMDDhhmmss+hh'mm'", "YYMMDDhhmmss-hh'mm'", "YYMMDDhhmm+hh'mm'",  or  "YYMMD-
       Dhhmm-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", "YYYYMMD-
       Dhhmmss.s+hh'mm'",   "YYYYMMDDhhmmss.s-hh'mm'",	 "YYYYMMDDhhmm+hh'mm'",   or	"YYYYMMD-
       Dhhmm-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 coctains the bit string organized by bytes and LEN is the number of bits.
	       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
       ASN1_SUCCESS  if the value was set, ASN1_ELEMENT_NOT_FOUND if name is not a valid element,
       and ASN1_VALUE_NOT_VALID if ivalue has a wrong format.

COPYRIGHT
       Copyright (C) 2006-2013 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.

libtasn1				       3.3			      asn1_write_value(3)
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