at.knowcenter.wag.egov.egiz.framework.verificators
Class BinaryVerificator_1_0_0

java.lang.Object
  at.knowcenter.wag.egov.egiz.framework.verificators.BinaryVerificator_1_0_0

All Implemented Interfaces:

Verificator

public class BinaryVerificator_1_0_0
extends Object
implements Verificator

The BinaryVerificator parses the EGIT Dictionary and extracts the signature holder from it.

Author:

wprinz

Field Summary

static byte[]	EGIZ_BYTE_RANGE_NAME The /ByteRange key in the EGIZ Dict.
static byte[]	EGIZ_CERT_NAME The /Cert key in the EGIZ Dict.
static byte[]	EGIZ_ENCODINGS_NAME The /encodings key in the EGIZ Dict.
static byte[]	EGIZ_KZ_NAME The /ID key in the EGIZ Dict.
static byte[]	EGIZ_ODS_NAME The /ODS key in the EGIZ Dict.
static byte[]	EGIZ_REPLACES_NAME The /replaces key in the EGIZ Dict.
static PdfASID	MY_ID The Pdf-AS ID of this Verificator.

Constructor Summary

BinaryVerificator_1_0_0()
Default constructor.

Method Summary

protected void	checkIndex(int name_index) Throws an excaption, if the index is lower than 0.
protected ParseResult	getRequiredValueOfKey(byte[] pdf, DictionaryParseResult egiz_dict, byte[] name) Retrieves the value of the key from the dictionary.
protected ParseResult	getValueOfKey(byte[] pdf, DictionaryParseResult egiz_dict, byte[] name) Retrieves the value of the key from the dictionary.
List	parseBlock(byte[] pdf, FooterParseResult block, int start_of_whole_block) Parses the given document/Block for signatures of this type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MY_ID

public static final PdfASID MY_ID

The Pdf-AS ID of this Verificator.

EGIZ_ODS_NAME

public static final byte[] EGIZ_ODS_NAME

The /ODS key in the EGIZ Dict.

EGIZ_KZ_NAME

public static final byte[] EGIZ_KZ_NAME

The /ID key in the EGIZ Dict.

EGIZ_BYTE_RANGE_NAME

public static final byte[] EGIZ_BYTE_RANGE_NAME

The /ByteRange key in the EGIZ Dict.

EGIZ_REPLACES_NAME

public static final byte[] EGIZ_REPLACES_NAME

The /replaces key in the EGIZ Dict.

EGIZ_ENCODINGS_NAME

public static final byte[] EGIZ_ENCODINGS_NAME

The /encodings key in the EGIZ Dict.

EGIZ_CERT_NAME

public static final byte[] EGIZ_CERT_NAME

The /Cert key in the EGIZ Dict.

Constructor Detail

BinaryVerificator_1_0_0

public BinaryVerificator_1_0_0()

Default constructor.

Method Detail

parseBlock

public List parseBlock(byte[] pdf,
                       FooterParseResult block,
                       int start_of_whole_block)
                throws PresentableException

Description copied from interface: Verificator

Parses the given document/Block for signatures of this type.

Specified by:

parseBlock in interface Verificator

Parameters:

pdf - The whole pdf document. A Verificator must only access the document up to its given block (block.next_index) and must not modify any byte in the pdf array.

block - The incremental update block.

start_of_whole_block - The start of the incremental update block (the end of the previous block) - If 0, this is the first block (the original Document).

Returns:

Returns the List of SignatureHolder objects found for this block.

Throws:

PresentableException

See Also:

Verificator.parseBlock(byte[], at.knowcenter.wag.exactparser.parsing.results.FooterParseResult, int)

getRequiredValueOfKey

protected ParseResult getRequiredValueOfKey(byte[] pdf,
                                            DictionaryParseResult egiz_dict,
                                            byte[] name)
                                     throws PDFDocumentException

Retrieves the value of the key from the dictionary.

Parameters:

pdf - The PDF.

egiz_dict - The dictionary.

name - The name of the key.

Returns:

Returns the value of the key. An exception is thrown if the key doesn't exist.

Throws:

PDFDocumentException - Thrown, if the key doesn't exist in the dictionary.

checkIndex

protected void checkIndex(int name_index)
                   throws PDFDocumentException

Throws an excaption, if the index is lower than 0.

Parameters:

name_index - The index.

Throws:

PDFDocumentException - Thrown, if the index is lower than 0.

getValueOfKey

protected ParseResult getValueOfKey(byte[] pdf,
                                    DictionaryParseResult egiz_dict,
                                    byte[] name)

Retrieves the value of the key from the dictionary.

Parameters:

pdf - The PDF.

egiz_dict - The dictionary.

name - The name of the key.

Returns:

Returns the key's value, or null if the dictionary didn't contain that key.