Package org.trustdeck.algorithms

Class XxHashPseudonymizer

java.lang.Object

org.trustdeck.algorithms.Pseudonymizer

org.trustdeck.algorithms.XxHashPseudonymizer

public class XxHashPseudonymizer
extends Pseudonymizer

This class provides a pseudonymization by assigning xxHash64-values as pseudonyms.

Author:

Armin Müller

Field Summary

Fields inherited from class org.trustdeck.algorithms.Pseudonymizer

DEFAULT_NUMBER_OF_RETRIES, DEFAULT_PADDING_CHAR, DEFAULT_VALUE_LENGTH, DOMAIN_FULL, PSEUDONYMIZATION_FAILED

Constructor Summary

Constructors

Constructor	Description
XxHashPseudonymizer()	Basic constructor.
XxHashPseudonymizer(boolean paddingWanted, int pseudonymValueLength, char paddingChar, String domainName)	A constructor that allows to set whether or not the created pseudonyms should be padded as well as the desired pseudonym value length and the character used for padding.
XxHashPseudonymizer(boolean paddingWanted, Algorithm algorithm)	Basic constructor.
XxHashPseudonymizer(boolean paddingWanted, Domain domain)	Basic constructor.
XxHashPseudonymizer(String domainName)	Basic constructor.

Method Summary

Modifier and Type	Method	Description
String	pseudonymize(String identifier, String domainPrefix)	Creates a xxHash64 hash pseudonym from the given identifier.

Methods inherited from class org.trustdeck.algorithms.Pseudonymizer

addCheckDigit, addPadding, correctPseudonymLength, persist

Methods inherited from class java.lang.Object

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

Constructor Details

XxHashPseudonymizer

public XxHashPseudonymizer()

Basic constructor. Padding is turned off. (The pseudonym value length is automatically set to the default, as well as the padding character.)

XxHashPseudonymizer

public XxHashPseudonymizer(String domainName)

Basic constructor. Padding is turned off. (The pseudonym value length is automatically set to the default, as well as the padding character.)

Parameters:

domainName - the name of the domain to which the record belongs to

XxHashPseudonymizer

public XxHashPseudonymizer(boolean paddingWanted,
 int pseudonymValueLength,
 char paddingChar,
 String domainName)

A constructor that allows to set whether or not the created pseudonyms should be padded as well as the desired pseudonym value length and the character used for padding.

Parameters:

paddingWanted - whether or not the pseudonyms should be padded to a certain length

pseudonymValueLength - the desired length of the pseudonym value

paddingChar - the character that should be used

domainName - the name of the domain to which the record belongs to

XxHashPseudonymizer

public XxHashPseudonymizer(boolean paddingWanted,
 Domain domain)

Basic constructor. All necessary variables are directly retrieved from the domain object.

Parameters:

paddingWanted - whether or not the pseudonyms should be padded to a certain length

domain - the domain object

XxHashPseudonymizer

public XxHashPseudonymizer(boolean paddingWanted,
 Algorithm algorithm)

Basic constructor. All necessary variables are directly retrieved from the algorithm object.

Parameters:

paddingWanted - whether or not the pseudonyms should be padded to a certain length

algorithm - the algorithm object

Method Details

pseudonymize

public String pseudonymize(String identifier,
 String domainPrefix)

Creates a xxHash64 hash pseudonym from the given identifier.

Specified by:

pseudonymize in class Pseudonymizer

Parameters:

identifier - the value to be pseudonymized

domainPrefix - the prefix for the domain

Returns:

a pseudonym in the form of domainPrefix-pseudonymValue (e.g. TST-a1cd75fe29c449248cabfae)