asn1_der_decoding_startEnd(3)					     libtasn1					     asn1_der_decoding_startEnd(3)

NAME

       asn1_der_decoding_startEnd - API function

SYNOPSIS

       #include <libtasn1.h>

       asn1_retCode asn1_der_decoding_startEnd(ASN1_TYPE element, const void * ider, int len, const char * name_element, int * start, int * end);

ARGUMENTS

       ASN1_TYPE element
		   pointer to an ASN1 element

       const void * ider
		   vector that contains the DER encoding.

       int len	   number of bytes of *ider: ider[0]..ider[len-1]

       const char * name_element
		   an element of NAME structure.

       int * start the position of the first byte of NAME_ELEMENT decoding (ider[*start])

       int * end   the position of the last byte of NAME_ELEMENT decoding (ider[*end])

DESCRIPTION

       Find  the  start and end point of an element in a DER encoding string. I mean that if you have a der encoding and you have already used the
       function asn1_der_decoding() to fill a structure, it may happen that you want to find the piece of string  concerning  an  element  of  the
       structure.

       One example is the sequence "tbsCertificate" inside an X509 certificate.

RETURNS

       ASN1_SUCCESS  if  DER  encoding	OK,  ASN1_ELEMENT_NOT_FOUND  if  ELEMENT  is  ASN1_TYPE  EMPTY	or  name_element  is  not a valid element,
       ASN1_TAG_ERROR or ASN1_DER_ERROR if the der encoding doesn't match the structure ELEMENT.

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_der_decoding_startEnd(3)