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asn1_write_value(3)                libtasn1                asn1_write_value(3)




NAME

       asn1_write_value - API function


SYNOPSIS

       #include <libtasn1.h>

       asn1_write_value(3) 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: "YYMMD-
       DhhmmssZ",     "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", "YYYYMMDDhh-
       mmss.sZ", "YYYYMMDDhhmmss.s+hh'mm'", "YYYYMMDDhhmmss.s-hh'mm'", "YYYYM-
       MDDhhmm+hh'mm'", or "YYYYMMDDhhmm-hh'mm'" where ss.s indicates the sec-
       onds 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. c       c       c
               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 numbcr 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 alterna-
       tives 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.sub-
       ject.rdnSequence", "NEW", 1);

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

       result=asn1_write_value(cert,            "tbsCertificate.subject.rdnSe-
       quence.?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) 2006-2015 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:

              http://www.gnu.org/software/libtasn1/manual/




libtasn1                             4.14                  asn1_write_value(3)

libtasn1 4.15.0 - Generated Thu Nov 21 07:24:24 CST 2019
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