NAME
asn1_der_decoding_startEnd - Find the start and end point of an element in a DER encoding string.
SYNOPSIS
#include <libtasn1.h>
I 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
pointer to an ASN1 element
"const
vector that contains the DER encoding.
"int
number of bytes of *ider: ider[0]..ider[len-1]
"const
an element of NAME structure.
"int
the position of the first byte of NAME_ELEMENT decoding
(ider[*start])
"int
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.
EXAMPLE
the sequence "tbsCertificate" inside an X509 certificate.
RETURNS
ASN1_SUCCESS
DER encoding OK.
ASN1_ELEMENT_NOT_FOUND
ELEMENT is ASN1_TYPE EMPTY or
NAME_ELEMENT is not a valid element.
ASN1_TAG_ERROR,ASN1_DER_ERROR: the der encoding doesn't match
the structure ELEMENT.
COPYRIGHT
Copyright 2006 Free Software Foundation, Inc..
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
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.
