org.bouncycastle.util

Class Fingerprint

java.lang.Object

org.bouncycastle.util.Fingerprint

public class Fingerprint
extends Object

Basic 20 byte finger print class.

Constructor Summary

Constructors

Constructor and Description
Fingerprint(byte[] source) Base constructor - use SHAKE-256 (160 bits).
Fingerprint(byte[] source, boolean useSHA512t) Deprecated. use the SHAKE only version.
Fingerprint(byte[] source, int bitLength) Constructor with length - use SHAKE-256 (bitLength bits).

Method Summary

Modifier and Type	Method and Description
static byte[]	calculateFingerprint(byte[] input) Return a byte array containing a calculated fingerprint for the passed in input data.
static byte[]	calculateFingerprint(byte[] input, int bitLength) Return a byte array containing a calculated fingerprint for the passed in input data.
static byte[]	calculateFingerprintSHA512_160(byte[] input) Deprecated. use the SHAKE based version.
boolean	equals(Object o)
byte[]	getFingerprint()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Fingerprint

public Fingerprint(byte[] source)

Base constructor - use SHAKE-256 (160 bits). This is the recommended one as it is also produced by the FIPS API.

Parameters:

source - original data to calculate the fingerprint from.

Fingerprint

public Fingerprint(byte[] source,
                   int bitLength)

Constructor with length - use SHAKE-256 (bitLength bits). This is the recommended one as it is also produced by the FIPS API.

Parameters:

source - original data to calculate the fingerprint from.

Fingerprint

public Fingerprint(byte[] source,
                   boolean useSHA512t)

Deprecated. use the SHAKE only version.

Base constructor - for backwards compatibility.

Parameters:

source - original data to calculate the fingerprint from.

useSHA512t - use the old SHA512/160 calculation.

Method Detail

getFingerprint

public byte[] getFingerprint()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

calculateFingerprint

public static byte[] calculateFingerprint(byte[] input)

Return a byte array containing a calculated fingerprint for the passed in input data. This calculation is compatible with the BC FIPS API.

Parameters:

input - data to base the fingerprint on.

Returns:

a byte array containing a 160 bit fingerprint.

calculateFingerprint

public static byte[] calculateFingerprint(byte[] input,
                                          int bitLength)

Return a byte array containing a calculated fingerprint for the passed in input data. This calculation is compatible with the BC FIPS API.

Parameters:

input - data to base the fingerprint on.

bitLength - bit length of finger print to be produced.

Returns:

a byte array containing a 20 byte fingerprint.

calculateFingerprintSHA512_160

public static byte[] calculateFingerprintSHA512_160(byte[] input)

Deprecated. use the SHAKE based version.

Return a byte array containing a calculated fingerprint for the passed in input data. The fingerprint is based on SHA512/160.

Parameters:

input - data to base the fingerprint on.

Returns:

a byte array containing a 20 byte fingerprint.