Package edu.fiu.adwise.homomorphic_encryption.dgk

Class DGKKeyPairGenerator

java.lang.Object

java.security.KeyPairGeneratorSpi

edu.fiu.adwise.homomorphic_encryption.dgk.DGKKeyPairGenerator

All Implemented Interfaces:

CipherConstants

public final class DGKKeyPairGenerator
extends KeyPairGeneratorSpi
implements CipherConstants

This class is responsible for generating DGK key pairs (public and private keys) used in the DGK cryptosystem. It extends the KeyPairGeneratorSpi class and implements the CipherConstants interface.

Field Summary

Fields inherited from interface edu.fiu.adwise.homomorphic_encryption.misc.CipherConstants

BILLION, CERTAINTY, EIGHT, FIELD_SIZE, FIVE, FOUR, KEY_SIZE, NEG_ONE, rnd, THREE, TWO

Constructor Summary

Constructors

Constructor	Description
DGKKeyPairGenerator()	Default constructor for DGKKeyPairGenerator.
DGKKeyPairGenerator(int l, int t, int k)	Initialize DGK Key pair generator and sets DGK parameters

Method Summary

Modifier and Type	Method	Description
KeyPair	generateKeyPair()	Generates a DGK key pair.
int	getK()	Gets the key size in bits.
int	getL()	Gets the size of plaintext.
int	getT()	Gets the security parameter.
void	initialize(int k, SecureRandom random)	Initializes the DGK key pair generator with the specified key size and random generator.
static void	main(String[] args)	Main method to generate and save DGK key pairs.
void	setK(int k)	Sets the key size in bits.
void	setL(int l)	Sets the size of plaintext.
void	setT(int t)	Sets the security parameter.
String	toString()	Returns a string representation of the DGKKeyPairGenerator.

Methods inherited from class java.security.KeyPairGeneratorSpi

initialize

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

DGKKeyPairGenerator

public DGKKeyPairGenerator()

Default constructor for DGKKeyPairGenerator. Initializes the generator with default parameters.

DGKKeyPairGenerator

public DGKKeyPairGenerator(int l,
 int t,
 int k)
                    throws HomomorphicException

Initialize DGK Key pair generator and sets DGK parameters

Parameters:

l - - sets size of plaintext

t - - security parameter

k - - number of bits of keys

Throws:

HomomorphicException - If invalid parameters are provided

Method Details

main

public static void main(String[] args)
                 throws IOException

Main method to generate and save DGK key pairs.

Parameters:

args - Command-line arguments

Throws:

IOException - If an error occurs while writing keys to files

getL

public int getL()

Gets the size of plaintext.

Returns:

The size of plaintext

setL

public void setL(int l)
          throws HomomorphicException

Sets the size of plaintext.

Parameters:

l - The size of plaintext

Throws:

HomomorphicException - If invalid parameters are provided

getT

public int getT()

Gets the security parameter.

Returns:

The security parameter

setT

public void setT(int t)
          throws HomomorphicException

Sets the security parameter.

Parameters:

t - The security parameter

Throws:

HomomorphicException - If invalid parameters are provided

getK

public int getK()

Gets the key size in bits.

Returns:

The key size in bits

setK

public void setK(int k)
          throws HomomorphicException

Sets the key size in bits.

Parameters:

k - The key size in bits

Throws:

HomomorphicException - If invalid parameters are provided

initialize

public void initialize(int k,
 SecureRandom random)

Initializes the DGK key pair generator with the specified key size and random generator.

Specified by:

initialize in class KeyPairGeneratorSpi

Parameters:

k - The key size in bits

random - The random generator

generateKeyPair

public KeyPair generateKeyPair()

Generates a DGK key pair.

Specified by:

generateKeyPair in class KeyPairGeneratorSpi

Returns:

The generated DGK key pair

toString

public String toString()

Returns a string representation of the DGKKeyPairGenerator.

Overrides:

toString in class Object

Returns:

A string containing the parameters l, t, and k