Package org.apache.commons.compress.archivers.zip

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

This class is not thread-safe

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.commons.compress.archivers.zip.PKWareExtraHeader

PKWareExtraHeader.EncryptionAlgorithm, PKWareExtraHeader.HashAlgorithm

Field Summary

Fields inherited from interface org.apache.commons.compress.archivers.zip.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 org.apache.commons.compress.archivers.zip.PKWareExtraHeader

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

Methods inherited from class java.lang.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)