debian man page for asn1_write_value

asn1_write_value(3)						     libtasn1						       asn1_write_value(3)

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'", "YYMMDDhh-
       mmss-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 contains the octet string and LEN is the number of octets.

       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) 2006-2011 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							       2.13						       asn1_write_value(3)