Package org.cdlib.mrt.utility

Class MessageDigestValue

java.lang.Object

org.cdlib.mrt.utility.MessageDigestValue

Direct Known Subclasses:

FixityTests

public class MessageDigestValue
extends Object

Perform Fixity tests

Author:

dloy

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	MessageDigestValue.Result

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	BUFSIZE
protected String	checksum
protected MessageDigestType	checksumType
protected static final boolean	DEBUG
protected long	inputSize
protected LoggerInf	logger
protected static final String	MESSAGE
protected static final String	NAME

Constructor Summary

Constructors

Constructor	Description
MessageDigestValue(File file, String checksumTypeS, LoggerInf inLogger)	Constructur - primary form Performs checksum creation on file and extacts file size
MessageDigestValue(InputStream inputStream, String checksumTypeS, LoggerInf inLogger)	Constructer - primary form Performs checksum creation on file and extacts file size

Method Summary

Modifier and Type	Method	Description
String	dump(String header)	Dump the content of this object to a string for logging
protected String	dumpEntry(String key, String value)	format entry for log
static MessageDigestType	getAlgorithm(String algorithmS)	Convert a string form of checksum type to an enum form lowercase and strip punctuation
String	getChecksum()	return constructed hex checksum
String	getChecksumBit64()	return constructed Bit 64 checksum
static String	getChecksumBit64(String checksumHex)	return constructed Bit 64 checksum
static String	getCheckSumBit64(byte[] bytes)
static String	getChecksumHex(String checksumBit64)	return hex checksum from Bit 64 checksum
String	getChecksumJavaAlgorithm()
MessageDigestType	getChecksumType()	return constructed checksum type
long	getInputSize()	return match file size
MessageDigestValue.Result	getResult()
protected TException	makeTException(String header, Exception ex)
protected void	setSizeChecksum(InputStream inputStream, String checksumType)	Get size and checksum for newer checksum types
protected void	setSizeChecksum32(Checksum checksum32, InputStream inputStream)	Create checksums for older types: CRC32 and Adler32
static byte[]	toByteArray(String s)
static String	toHexString(byte[] array)

Methods inherited from class java.lang.Object

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

Field Details

NAME

protected static final String NAME

See Also:

• Constant Field Values

MESSAGE

protected static final String MESSAGE

See Also:

• Constant Field Values

BUFSIZE

protected static final int BUFSIZE

See Also:

• Constant Field Values

DEBUG

protected static final boolean DEBUG

See Also:

• Constant Field Values

checksum

protected String checksum

checksumType

protected MessageDigestType checksumType

inputSize

protected long inputSize

logger

protected LoggerInf logger

Constructor Details

MessageDigestValue

public MessageDigestValue(File file,
 String checksumTypeS,
 LoggerInf inLogger)
                   throws TException

Constructur - primary form Performs checksum creation on file and extacts file size

Parameters:

file - file used for fixity data creation

inLogger -

checksumType -

Throws:

TException

MessageDigestValue

public MessageDigestValue(InputStream inputStream,
 String checksumTypeS,
 LoggerInf inLogger)
                   throws TException

Constructer - primary form Performs checksum creation on file and extacts file size

Parameters:

inputStream - Input Stream from digital object for fixity

checksumTypeS - string form checksum type

inLogger - logger

Throws:

TException

Method Details

getAlgorithm

public static MessageDigestType getAlgorithm(String algorithmS)

Convert a string form of checksum type to an enum form lowercase and strip punctuation

Parameters:

algorithmS - String form of checksum type

Returns:

dump

public String dump(String header)

Dump the content of this object to a string for logging

Parameters:

header - header displayed in log entry

dumpEntry

protected String dumpEntry(String key,
 String value)

format entry for log

Parameters:

key - format key

value - format value

Returns:

formated key=value

getChecksum

public String getChecksum()

return constructed hex checksum

Returns:

checksum

getChecksumBit64

public String getChecksumBit64()

return constructed Bit 64 checksum

Returns:

checksum

getChecksumBit64

public static String getChecksumBit64(String checksumHex)

return constructed Bit 64 checksum

Returns:

checksum

getChecksumHex

public static String getChecksumHex(String checksumBit64)

return hex checksum from Bit 64 checksum

Returns:

checksum

getCheckSumBit64

public static String getCheckSumBit64(byte[] bytes)

toHexString

public static String toHexString(byte[] array)

toByteArray

public static byte[] toByteArray(String s)

getChecksumType

public MessageDigestType getChecksumType()

return constructed checksum type

Returns:

checksumType

getChecksumJavaAlgorithm

public String getChecksumJavaAlgorithm()

getInputSize

public long getInputSize()

return match file size

Returns:

fileSize

setSizeChecksum

protected void setSizeChecksum(InputStream inputStream,
 String checksumType)
                        throws TException

Get size and checksum for newer checksum types

Parameters:

inputStream - stream used for calculating checksum

checksumType - string form checksum type

Throws:

TException - process exception

setSizeChecksum32

protected void setSizeChecksum32(Checksum checksum32,
 InputStream inputStream)
                          throws TException

Create checksums for older types: CRC32 and Adler32

Parameters:

checksum32 - checksum handler

inputStream - stream used for checksum creation

Throws:

TException - process exception

makeTException

protected TException makeTException(String header,
 Exception ex)

getResult

public MessageDigestValue.Result getResult()