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asn1_der_decoding2(3)		   libtasn1		 asn1_der_decoding2(3)

NAME
       asn1_der_decoding2 - API	function

SYNOPSIS
       #include	<libtasn1.h>

       int  asn1_der_decoding2(asn1_node  *  element, const void * ider, int *
       max_ider_len, unsigned int flags, char *	errorDescription);

ARGUMENTS
       asn1_node * element
		   pointer to an ASN1 structure.

       const void * ider
		   vector that contains	the DER	encoding.

       int * max_ider_len
		   pointer to an integer giving	the information	about the max-
		   imal	number of bytes	occupied by * ider . The real size  of
		   the DER encoding is returned	through	this pointer.

       unsigned	int flags
		   flags controlling the behaviour of the function.

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

DESCRIPTION
       Fill the	structure * element with values	of a DER encoding string.  The
       structure must just be created with function asn1_create_element().

       If  ASN1_DECODE_FLAG_ALLOW_PADDING  flag	 is set	then the function will
       ignore padding after the	decoded	DER data. Upon a successful return the
       value of	* max_ider_len will be set to the number of bytes decoded.

       If ASN1_DECODE_FLAG_STRICT_DER flag is set then the function  will  not
       decode any BER-encoded elements.

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

COPYRIGHT
       Copyright (C) 2006-2025 Free Software Foundation, Inc..
       Copying	and  distribution  of this file, with or without modification,
       are permitted in	any medium without royalty provided the	copyright  no-
       tice 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.	 As an alternative you
       may obtain the manual from:

	      https://www.gnu.org/software/libtasn1/manual/

libtasn1			    4.20.0		 asn1_der_decoding2(3)

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