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asn1_der_decoding_startEnd(3)      libtasn1      asn1_der_decoding_startEnd(3)

       asn1_der_decoding_startEnd - Find the start and end point of an element
       in a DER encoding string.

       #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);

       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

       int * end   the position of the  last  byte  of  NAME_ELEMENT  decoding

       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

       the sequence "tbsCertificate" inside an X509 certificate.

       DER encoding OK.

       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 (C) 2006, 2007, 2008, 2009 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.

       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                              2.2        asn1_der_decoding_startEnd(3)

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Gedruckt am: 13.12.2017 10:06 GMT+0100 (2017-12-13T10:06:22+01:00)