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CentOS 7.0 - man page for asn1_der_decoding_startend (centos section 3)

asn1_der_decoding_startEnd(3)		     libtasn1		    asn1_der_decoding_startEnd(3)

NAME
       asn1_der_decoding_startEnd - API function

SYNOPSIS
       #include <libtasn1.h>

       int asn1_der_decoding_startEnd(asn1_node element, const void * ider, int len, const char *
       name_element, int * start, int * end);

ARGUMENTS
       asn1_node 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_node 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) 2006-2013 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_der_decoding_startEnd(3)


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