Package edu.fiu.adwise.homomorphic_encryption.socialistmillionaire

Interface bob_interface

All Known Implementing Classes:

bob, bob_elgamal, bob_joye, bob_veugen

public interface bob_interface

Interface defining the operations for Bob in the Socialist Millionaires' Problem (SMP) protocol. This interface includes methods for secure multi-party computation using homomorphic encryption.

Method Summary

Modifier and Type	Method	Description
void	division(long divisor)	Performs division on an encrypted integer with alice.
void	encrypted_equals()	Compares two encrypted integers for equality.
void	multiplication()	Performs multiplication on encrypted integers with alice.
boolean	Protocol1(BigInteger y)	Compares Alice's private integer with Bob's private integer.
boolean	Protocol2()	Compares two encrypted integers and determines if the first is greater than or equal to the second.
void	sendPublicKeys()	Sends public keys to alice.
void	set_socket(Socket socket)	Sets the socket for communication.
void	sort()	Sorts a collection of encrypted integers.

Method Details

encrypted_equals

void encrypted_equals()
               throws IOException,
HomomorphicException,
ClassNotFoundException

Compares two encrypted integers for equality.

Throws:

IOException - if an I/O error occurs.

HomomorphicException - if a homomorphic encryption error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

Protocol1

boolean Protocol1(BigInteger y)
           throws IOException,
IllegalArgumentException,
HomomorphicException,
ClassNotFoundException

Compares Alice's private integer with Bob's private integer. This means this input is NOT encrypted!!

Parameters:

y - Bob's private integer.

Returns:

true if the comparison satisfies the protocol, false otherwise.

Throws:

IOException - if an I/O error occurs.

IllegalArgumentException - if an invalid argument is provided.

HomomorphicException - if a homomorphic encryption error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

Protocol2

boolean Protocol2()
           throws IOException,
ClassNotFoundException,
HomomorphicException

Compares two encrypted integers and determines if the first is greater than or equal to the second.

Returns:

true if the first encrypted integer is greater than or equal to the second, false otherwise.

Throws:

IOException - if an I/O error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

HomomorphicException - if a homomorphic encryption error occurs.

division

void division(long divisor)
       throws IOException,
ClassNotFoundException,
HomomorphicException

Performs division on an encrypted integer with alice.

Parameters:

divisor - the divisor.

Throws:

IOException - if an I/O error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

HomomorphicException - if a homomorphic encryption error occurs.

multiplication

void multiplication()
             throws IOException,
ClassNotFoundException,
IllegalArgumentException,
HomomorphicException

Performs multiplication on encrypted integers with alice.

Throws:

IOException - if an I/O error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

IllegalArgumentException - if an invalid argument is provided.

HomomorphicException - if a homomorphic encryption error occurs.

sort

void sort()
   throws IOException,
ClassNotFoundException,
HomomorphicException

Sorts a collection of encrypted integers.

Throws:

IOException - if an I/O error occurs.

ClassNotFoundException - if the class of a serialized object cannot be found.

HomomorphicException - if a homomorphic encryption error occurs.

sendPublicKeys

void sendPublicKeys()
             throws IOException

Sends public keys to alice.

Throws:

IOException - if an I/O error occurs.

set_socket

void set_socket(Socket socket)
         throws IOException

Sets the socket for communication.

Parameters:

socket - the socket to use for communication.

Throws:

IOException - if an I/O error occurs.