Class X0016_CertificateIdForCentralDirectory

java.lang.Object

org.apache.commons.compress.archivers.zip.PKWareExtraHeader

org.apache.commons.compress.archivers.zip.X0016_CertificateIdForCentralDirectory

All Implemented Interfaces:

ZipExtraField

public class X0016_CertificateIdForCentralDirectory
extends PKWareExtraHeader

X.509 Certificate ID and Signature for central directory (0x0016).

This field contains the information about which certificate in the PKCS#7 store was used to sign the central directory structure. When the Central Directory Encryption feature is enabled for a ZIP file, this record will appear in the Archive Extra Data Record, otherwise it will appear in the first central directory record.

Note: all fields stored in Intel low-byte/high-byte order.

        Value     Size     Description
        -----     ----     -----------
(CDID)  0x0016    2 bytes  Tag for this "extra" block type
        TSize     2 bytes  Size of data that follows
        RCount    4 bytes  Number of recipients. (inferred)
        HashAlg   2 bytes  Hash algorithm identifier. (inferred)
        TData     TSize    Data

Since:

1.11

Nested Class Summary

Nested classes/interfaces inherited from class PKWareExtraHeader

PKWareExtraHeader.EncryptionAlgorithm, PKWareExtraHeader.HashAlgorithm

Field Summary

Fields inherited from interface ZipExtraField

EXTRAFIELD_HEADER_SIZE

Constructor Summary

Constructors

Constructor	Description
X0016_CertificateIdForCentralDirectory()

Method Summary

Modifier and Type	Method	Description
PKWareExtraHeader.HashAlgorithm	getHashAlgorithm()	Gets hash algorithm.
int	getRecordCount()	Gets record count.
void	parseFromCentralDirectoryData(byte[] data, int offset, int length)	Populate data from this array as if it was in central directory data.

Methods inherited from class PKWareExtraHeader

assertMinimalLength, getCentralDirectoryData, getCentralDirectoryLength, getHeaderId, getLocalFileDataData, getLocalFileDataLength, parseFromLocalFileData, setCentralDirectoryData, setLocalFileDataData

Methods inherited from class Object

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

Constructor Details

X0016_CertificateIdForCentralDirectory

public X0016_CertificateIdForCentralDirectory()

Method Details

getHashAlgorithm

public PKWareExtraHeader.HashAlgorithm getHashAlgorithm()

Gets hash algorithm.

Returns:

the hash algorithm

getRecordCount

public int getRecordCount()

Gets record count.

Returns:

the record count

parseFromCentralDirectoryData

public void parseFromCentralDirectoryData(byte[] data,
 int offset,
 int length)
                                   throws ZipException

Description copied from interface: ZipExtraField

Populate data from this array as if it was in central directory data.

Specified by:

parseFromCentralDirectoryData in interface ZipExtraField

Overrides:

parseFromCentralDirectoryData in class PKWareExtraHeader

Parameters:

data - the array of bytes.

offset - the source location in the data array.

length - the number of bytes to use in the data array.

Throws:

ZipException - on error

See Also:

• ZipExtraField.parseFromCentralDirectoryData(byte[], int, int)