Login or Register to Ask a Question and Join Our Community

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

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_decoding_element(3)					     libtasn1					      asn1_der_decoding_element(3)

NAME

       asn1_der_decoding_element - API function

SYNOPSIS

       #include <libtasn1.h>

       asn1_retCode  asn1_der_decoding_element(ASN1_TYPE  *  structure, const char * elementName, const void * ider, int len, char * errorDescrip-
       tion);

ARGUMENTS

       ASN1_TYPE * structure
		   pointer to an ASN1 structure

       const char * elementName
		   name of the element to fill

       const void * ider
		   vector that contains the DER encoding of the whole structure.

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

       char * errorDescription
		   null-terminated string contains details when an error occurred.

DESCRIPTION

       Fill the element named ELEMENTNAME with values of a DER encoding string.  The structure must just be created with function asn1_create_ele-
       ment().	 The  DER  vector  must contain the encoding string of the whole STRUCTURE.  If an error occurs during the decoding procedure, the
       *STRUCTURE is deleted and set equal to ASN1_TYPE_EMPTY.

RETURNS

       ASN1_SUCCESS if DER encoding OK, ASN1_ELEMENT_NOT_FOUND if ELEMENT is  ASN1_TYPE_EMPTY  or  elementName	==  NULL,  and	ASN1_TAG_ERROR	or
       ASN1_DER_ERROR if the der encoding doesn't match the structure structure (*ELEMENT deleted).

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_element(3)
Man Page