P2-DPOP's UTIL propagation module, using partially homomorphic encryption on utilities and a linear order on variables. More...

Inheritance diagram for frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >:

[legend]

Classes
class	VariableInfo
	A convenience class used to store information about a variable. More...

Public Member Functions
	EncryptedUTIL (DCOPProblemInterface< V, U > problem, Element parameters) throws ClassNotFoundException
	Constructor from XML descriptions.
	EncryptedUTIL (Element parameters, DCOPProblemInterface< V, U > problem)
	The constructor called in "statistics gatherer" mode.
void	reset ()
void	setSilent (boolean silent)
void	setQueue (Queue queue)
void	getStatsFromQueue (Queue queue)
Integer	getMaxMsgDim ()
Collection< MessageType >	getMsgTypes ()
void	notifyIn (Message msg)
long	getFinalTime ()
	Returns the time at which this module has finished, determined by looking at the timestamp of the stat messages.
Decision	notifyOut (Message msg)
	Re-encrypts UTIL messages the first time they leave the agent.
Public Member Functions inherited from frodo2.communication.IncomingMsgPolicyInterface< T >
default void	notifyIn (Message msg, Object toAgent)
	Notifies the listener of an incoming message.
Public Member Functions inherited from frodo2.communication.OutgoingMsgPolicyInterface< T >
default Decision	notifyOut (Object fromAgent, Message msg)
	Notifies the listener of an outgoing message.
default Decision	notifyOut (Object fromAgent, Message msg, Collection<? extends Object > toAgents)
	Notifies the listener of an outgoing message.
default Decision	notifyOut (Message msg, Collection<? extends Object > toAgents)
	Notifies the listener of an outgoing message.

Static Public Attributes
static final MessageType	CODENAME_TYPE = VariableObfuscation.CODE_NAME_TYPE
	The type of the message used to share codeName with children.

Static Package Attributes
static final MessageType	LEAF_MSG_TYPE = new MessageType ("P2-DPOP", "EncryptedUTIL", "Start")
	The type of the token sent by the root to the last variable in the linear ordering to tell it to start UTIL propagation.
static final MessageType	ENCRYPTED_UTIL_TYPE = new MessageType ("P2-DPOP", "EncryptedUTIL", "UTIL")
	The type of the encrypted UTIL messages.

Private Member Functions
void	init ()
	Initiate the module.
void	projectAndSend (UtilitySolutionSpaceLimited< V, U, E > space, VariableInfo info)
	Projects out a variable and sends the result to its parent (if any) or sends a reroot request.
U	findOptimalValueForIsolatedVar (VariableInfo varInfo)
void	askDecrypt (UtilitySolutionSpaceLimited< V, U, E > space, VariableInfo info)
	Find out the optimal value of a variable.
void	sendToParent (String var, UtilitySolutionSpaceLimited< V, U, E > space)
	Sends a UTIL message.
void	sendOutput (U utility, V optValue, String var)
	Sends the output utility to itself and to the statistics monitor.
String	generateCodeName ()
	Genereate a codeName and add it to the list of the used codeNames for this agent.
V[]	randomDomain (String var)
	Generates a domain of random numbers.
void	record (UtilitySolutionSpace< V, U > space, VariableInfo info)
	Records the input space until spaces from all children have been received.

Private Attributes
SecureRandom	rand = new SecureRandom()
	A source of randomness.
Set< String >	codeNames
	List of all codeNames used by this agent.
DCOPProblemInterface< V, U >	problem
	This problem.
long	finalTime
	The time when the last stat message has been received.
int	maxMsgDim = 0
	In stats gatherer mode, the maximum number of variables in a UTIL message.
Queue	queue
	Queue to receive messages.
Map< String, VariableInfo >	infos
	For each variable this agent owns, its relevant information.
E	infinity
	An encrypted version of +INF.
final boolean	minNCCCs
	Whether to minimize the NCCC count, at the expense of an increase in runtime.
boolean	mergeBack
	If merging back edges is allowed (i.e.
boolean	start = false
	If this module has started or not.
Class< E >	encryptedUtilClass
	Class used for encrypted utilities.
HashMap< EncrUTIL< V, U, E >, VariableInfo >	utilSent = new HashMap< EncrUTIL<V, U, E>, VariableInfo > ()
	A set of UTIL messages sent, used to detect when one leaves the agent, so as only to re-encrypt it then.
boolean	reportStats = true
	Whether to report stats.

Detailed Description

P2-DPOP's UTIL propagation module, using partially homomorphic encryption on utilities and a linear order on variables.

This is an optimization version of the ConsistencyProp() and FeasibleValue() procedures from the following paper: Thomas Leaute and Boi Faltings. Privacy-preserving multi-agent constraint satisfaction. In Proceedings of the 2009 IEEE International Conference on PrivAcy, Security, riSk and Trust (PASSAT'09), Vancouver, British Columbia, August 29-31 2009. IEEE Computer Society Press.

Author: Eric Zbinden, Thomas Leaute

Parameters

<V>	the type used for variable values
<U>	the type used for cleartext utility values
<E>	the type used for encrypted utility values

Constructor & Destructor Documentation

◆ EncryptedUTIL() [1/2]

frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.EncryptedUTIL	(	DCOPProblemInterface< V, U >	problem,
		Element	parameters ) throws ClassNotFoundException

Constructor from XML descriptions.

Parameters

problem	description of the problem
parameters	description of the parameters of EncryptedUTIL

Exceptions

ClassNotFoundException if specified utility classes are not found

References EncryptedUTIL(), and problem.

Referenced by EncryptedUTIL().

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◆ EncryptedUTIL() [2/2]

frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.EncryptedUTIL	(	Element	parameters,
		DCOPProblemInterface< V, U >	problem )

The constructor called in "statistics gatherer" mode.

Parameters

problem	the overall problem
parameters	the description of what statistics should be reported

References problem.

Member Function Documentation

◆ askDecrypt()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.askDecrypt	(	UtilitySolutionSpaceLimited< V, U, E >	space,
		VariableInfo	info )

private

Find out the optimal value of a variable.

Parameters

space	the utilitySolutionSpaceLimited
info	the variable info

Todo: No need to decrypt min1 twice

References frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.cs, frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.lowerB, frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.minFromTo(), frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.self, frodo2.communication.Queue.sendMessageToSelf(), frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.setFinalSpace(), and frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.upperB.

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◆ findOptimalValueForIsolatedVar()

U frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.findOptimalValueForIsolatedVar ( VariableInfo varInfo )

private

Parameters

varInfo the info for an isolated variable

Returns: Compute the minimal utility for an isolated variable

References frodo2.solutionSpaces.UtilitySolutionSpace< V extends Addable< V >, U extends Addable >.ProjOutput< V extends Addable< V >, U extends Addable >.assignments, findOptimalValueForIsolatedVar(), frodo2.solutionSpaces.BasicUtilitySolutionSpace< V extends Addable< V >, U extends Serializable >.getUtility(), and frodo2.solutionSpaces.UtilitySolutionSpace< V extends Addable< V >, U extends Addable >.projectAll().

Referenced by findOptimalValueForIsolatedVar().

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◆ generateCodeName()

String frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.generateCodeName ( )

private

Genereate a codeName and add it to the list of the used codeNames for this agent.

Returns: a codeName

References codeNames, and rand.

◆ getFinalTime()

long frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.getFinalTime ( )

Returns the time at which this module has finished, determined by looking at the timestamp of the stat messages.

Returns: the time at which this module has finished

References finalTime.

◆ getMaxMsgDim()

Integer frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.getMaxMsgDim ( )

Returns: the maximum number of variables in a UTIL message (in stats gatherer mode only)

◆ getMsgTypes()

Collection< MessageType > frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.getMsgTypes ( )

See also: StatsReporter.getMsgTypes()

Implements frodo2.communication.MessageListener< T >.

References frodo2.algorithms.AgentInterface< V extends Addable< V > >.AGENT_FINISHED, CODENAME_TYPE, frodo2.algorithms.dpop.privacy.OptUtilMsg >.COMP_OPT_UTIL_MSG_TYPE, frodo2.algorithms.dpop.privacy.CollaborativeDecryption< C extends Addable< C >, E extends AddableLimited< C, E, K extends PublicKeyShare >.CRYPTO_SCHEME_TYPE, frodo2.algorithms.dpop.privacy.SecureCircularRouting.DELIVERY_MSG_TYPE, frodo2.algorithms.varOrdering.dfs.DFSgeneration< V extends Addable< V >, U extends Addable >.OUTPUT_MSG_TYPE, frodo2.algorithms.varOrdering.dfs.DFSgenerationWithOrder< V extends Addable< V >, U extends Addable >.OUTPUT_MSG_TYPE, frodo2.algorithms.dpop.privacy.CollaborativeDecryption< C extends Addable< C >, E extends AddableLimited< C, E, K extends PublicKeyShare >.OUTPUT_TYPE, frodo2.algorithms.dpop.privacy.SecureCircularRouting.PREVIOUS_MSG_TYPE, frodo2.algorithms.AgentInterface< V extends Addable< V > >.START_AGENT, and frodo2.algorithms.dpop.privacy.SecureCircularRouting.TO_LAST_LEAF_MSG_TYPE.

◆ getStatsFromQueue()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.getStatsFromQueue ( Queue queue )

See also: StatsReporter.getStatsFromQueue(Queue)

Implements frodo2.algorithms.StatsReporter.

References queue, and frodo2.algorithms.dpop.UTILpropagation< Val extends Addable< Val >, U extends Addable >.UTIL_STATS_MSG_TYPE.

◆ init()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.init ( )

private

Initiate the module.

References problem.

Referenced by notifyIn().

◆ notifyIn()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.notifyIn ( Message msg )

See also: StatsReporter.notifyIn(Message)

Implements frodo2.communication.IncomingMsgPolicyInterface< T >.

References frodo2.algorithms.AgentInterface< V extends Addable< V > >.AGENT_FINISHED, frodo2.communication.MessageType.equals(), frodo2.solutionSpaces.DCOPProblemInterface< V extends Addable< V >, U extends Addable >.getNbrNeighbors(), init(), notifyIn(), frodo2.algorithms.varOrdering.dfs.DFSgenerationWithOrder< V extends Addable< V >, U extends Addable >.OUTPUT_MSG_TYPE, start, and frodo2.algorithms.dpop.UTILpropagation< Val extends Addable< Val >, U extends Addable >.UTIL_STATS_MSG_TYPE.

Referenced by notifyIn().

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◆ notifyOut()

Decision frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.notifyOut ( Message msg )

Re-encrypts UTIL messages the first time they leave the agent.

See also: OutgoingMsgPolicyInterface.notifyOut(Message)

Implements frodo2.communication.OutgoingMsgPolicyInterface< T >.

References frodo2.communication.OutgoingMsgPolicyInterface< T >.Decision.DONTCARE, frodo2.communication.MessageType.isParent(), notifyOut(), frodo2.algorithms.dpop.privacy.SecureCircularRouting.PREVIOUS_MSG_TYPE, and frodo2.algorithms.dpop.privacy.SecureCircularRouting.TO_LAST_LEAF_MSG_TYPE.

Referenced by notifyOut().

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◆ projectAndSend()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.projectAndSend	(	UtilitySolutionSpaceLimited< V, U, E >	space,
		VariableInfo	info )

private

Projects out a variable and sends the result to its parent (if any) or sends a reroot request.

Parameters

info	information about the variable to be projected out
space	the space received in EncryptedUTIL (and null if the variable is a leaf)

References projectAndSend().

Referenced by projectAndSend().

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◆ randomDomain()

V[] frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.randomDomain ( String var )

private

Generates a domain of random numbers.

Parameters

var	the variable for which the domain must be created

Returns: a random domain of values in form of a array of size specified

Todo: Make all obfuscated domains with the same size (given as a parameter in the XML file).

References frodo2.solutionSpaces.DCOPProblemInterface< V extends Addable< V >, U extends Addable >.getDomain(), and rand.

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◆ record()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.record	(	UtilitySolutionSpace< V, U >	space,
		VariableInfo	info )

private

Records the input space until spaces from all children have been received.

Parameters

space	the space to be recorded
info	the information on the variable responsible for the space

References frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.localSpaces.

◆ reset()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.reset ( )

See also: StatsReporter.reset()

Implements frodo2.algorithms.StatsReporter.

◆ sendOutput()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.sendOutput	(	U	utility,
		V	optValue,
		String	var )

private

Sends the output utility to itself and to the statistics monitor.

Parameters

utility	The utility corresponding to optimal value
optValue	the optimal value
var	the variable who send

References infos, frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.iteration, frodo2.output, queue, frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.reset(), and frodo2.communication.Queue.sendMessageToSelf().

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◆ sendToParent()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable< U >, E extends AddableLimited< U, E >.sendToParent	(	String	var,
		UtilitySolutionSpaceLimited< V, U, E >	space )

private

Sends a UTIL message.

Parameters

var	the sender of the message
space	the content of the message

References frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.encode(), frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.getEncryptDomain(), infos, frodo2.algorithms.dpop.privacy.SecureCircularRouting.PREVIOUS_MSG_TYPE, queue, frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.VariableInfo.reset(), and utilSent.

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◆ setQueue()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.setQueue ( Queue queue )

See also: StatsReporter.setQueue(Queue)

Implements frodo2.communication.MessageListener< T >.

References queue.

◆ setSilent()

void frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.setSilent ( boolean silent )

See also: StatsReporter.setSilent(boolean)

Implements frodo2.algorithms.StatsReporter.

Member Data Documentation

◆ CODENAME_TYPE

final MessageType frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.CODENAME_TYPE = VariableObfuscation.CODE_NAME_TYPE

static

The type of the message used to share codeName with children.

Referenced by getMsgTypes(), frodo2.algorithms.dpop.privacy.VarCodenameMsg< V >.VarCodenameMsg(), and frodo2.algorithms.dpop.privacy.VarCodenameMsg< V >.VarCodenameMsg().

◆ codeNames

Set<String> frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.codeNames

private

List of all codeNames used by this agent.

Referenced by generateCodeName().

◆ ENCRYPTED_UTIL_TYPE

final MessageType frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.ENCRYPTED_UTIL_TYPE = new MessageType ("P2-DPOP", "EncryptedUTIL", "UTIL")

staticpackage

The type of the encrypted UTIL messages.

Referenced by frodo2.algorithms.dpop.privacy.EncrUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.EncrUTIL(), and frodo2.algorithms.dpop.privacy.EncrUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.EncrUTIL().

◆ encryptedUtilClass

Class<E> frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.encryptedUtilClass

private

Class used for encrypted utilities.

◆ finalTime

long frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.finalTime

private

The time when the last stat message has been received.

Referenced by getFinalTime().

◆ infinity

E frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.infinity

private

An encrypted version of +INF.

◆ infos

Map<String, VariableInfo> frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.infos

private

For each variable this agent owns, its relevant information.

Referenced by sendOutput(), and sendToParent().

◆ LEAF_MSG_TYPE

final MessageType frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.LEAF_MSG_TYPE = new MessageType ("P2-DPOP", "EncryptedUTIL", "Start")

staticpackage

The type of the token sent by the root to the last variable in the linear ordering to tell it to start UTIL propagation.

Referenced by frodo2.algorithms.dpop.privacy.LeafMsg.LeafMsg().

◆ maxMsgDim

int frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.maxMsgDim = 0

private

In stats gatherer mode, the maximum number of variables in a UTIL message.

◆ mergeBack

boolean frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.mergeBack

private

If merging back edges is allowed (i.e.

one variable is always identified by the same codename, regardless of the pseudo-child)

◆ minNCCCs

final boolean frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.minNCCCs

private

Whether to minimize the NCCC count, at the expense of an increase in runtime.

◆ problem

DCOPProblemInterface<V, U> frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.problem

private

This problem.

Referenced by EncryptedUTIL(), EncryptedUTIL(), and init().

◆ queue

Queue frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.queue

private

Queue to receive messages.

Referenced by getStatsFromQueue(), sendOutput(), sendToParent(), and setQueue().

◆ rand

SecureRandom frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.rand = new SecureRandom()

private

A source of randomness.

Referenced by generateCodeName(), and randomDomain().

◆ reportStats

boolean frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.reportStats = true

private

Whether to report stats.

◆ start

boolean frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.start = false

private

If this module has started or not.

Referenced by notifyIn().

◆ utilSent

HashMap< EncrUTIL<V, U, E>, VariableInfo > frodo2.algorithms.dpop.privacy.EncryptedUTIL< V extends Addable< V >, U extends Addable, E extends AddableLimited< U, E >.utilSent = new HashMap< EncrUTIL<V, U, E>, VariableInfo > ()

private

A set of UTIL messages sent, used to detect when one leaves the agent, so as only to re-encrypt it then.

Referenced by sendToParent().

The documentation for this class was generated from the following file:

src/frodo2/algorithms/dpop/privacy/EncryptedUTIL.java

Classes

Public Member Functions

Static Public Attributes

Static Package Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ EncryptedUTIL() [1/2]

◆ EncryptedUTIL() [2/2]

Member Function Documentation

◆ askDecrypt()

◆ findOptimalValueForIsolatedVar()

◆ generateCodeName()

◆ getFinalTime()

◆ getMaxMsgDim()

◆ getMsgTypes()

◆ getStatsFromQueue()

◆ init()

◆ notifyIn()

◆ notifyOut()

◆ projectAndSend()

◆ randomDomain()

◆ record()

◆ reset()

◆ sendOutput()

◆ sendToParent()

◆ setQueue()

◆ setSilent()

Member Data Documentation

◆ CODENAME_TYPE

◆ codeNames

◆ ENCRYPTED_UTIL_TYPE

◆ encryptedUtilClass

◆ finalTime

◆ infinity

◆ infos

◆ LEAF_MSG_TYPE

◆ maxMsgDim

◆ mergeBack

◆ minNCCCs

◆ problem

◆ queue

◆ rand

◆ reportStats

◆ start

◆ utilSent