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asn1_der_decoding_startend(3) [suse man page]

asn1_der_decoding_startEnd(3)					     libtasn1					     asn1_der_decoding_startEnd(3)

NAME

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

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.

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 (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.

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								2.2					     asn1_der_decoding_startEnd(3)

Check Out this Related Man Page

asn1_der_coding(3)						     libtasn1							asn1_der_coding(3)

NAME

       asn1_der_coding - API function

SYNOPSIS

       #include <libtasn1.h>

       asn1_retCode asn1_der_coding(ASN1_TYPE element, const char * name, void * ider, int * len, char * ErrorDescription);

ARGUMENTS

       ASN1_TYPE element
		   pointer to an ASN1 element

       const char * name
		   the name of the structure you want to encode (it must be inside *POINTER).

       void * ider vector that will contain the DER encoding. DER must be a pointer to memory cells already allocated.

       int * len   number of bytes of *ider: ider[0]..ider[len-1], Initialy holds the sizeof of der vector.

       char * ErrorDescription

DESCRIPTION

       Creates the DER encoding for the NAME structure (inside *POINTER structure).

RETURNS

       ASN1_SUCCESS if DER encoding OK, ASN1_ELEMENT_NOT_FOUND if name is not a valid element, ASN1_VALUE_NOT_FOUND if there is an element without
       a value, ASN1_MEM_ERROR if the ider vector isn't big enough and in this case len will contain the length needed.

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_coding(3)
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