frodo2.solutionSpaces.crypto.ElGamalBigInteger Class Reference

ElGamal encryption of an integer. More...

Inheritance diagram for frodo2.solutionSpaces.crypto.ElGamalBigInteger:

Public Member Functions
	ElGamalBigInteger ()
	Used for externalization only.
	ElGamalBigInteger (final AddableInteger value, final int size)
	Constructor.
ElGamalBigInteger	add (final AddableInteger other)
ElGamalBigInteger	min (final ElGamalBigInteger other)
ElGamalBigInteger	max (ElGamalBigInteger other)
void	readExternal (ObjectInput in) throws IOException, ClassNotFoundException
void	writeExternal (ObjectOutput out) throws IOException
Object	readResolve ()
final boolean	externalize ()
String	toString ()
boolean	equals (Object o)
Public Member Functions inherited from frodo2.solutionSpaces.AddableLimited< A extends Addable< A >, M extends AddableLimited< A, M >
M	add (A other)
	Addition.
M	min (M other)
	Minimum.
M	max (M other)
	Maximum.

Package Functions
	ElGamalBigInteger (BigInteger[][] vector)
	Constructor.

Package Attributes
BigInteger[][]	vector
	A vector of pairs that represents this ElGamalBigInteger as [[alpha1, beta1], [alpha2, beta2], ... ].

Static Private Attributes
static BigInteger[]	ONE = new BigInteger[] { BigInteger.ONE, BigInteger.ONE }
	The (unencrypted) [alpha, beta] representation of 1.
static BigInteger[]	TWO = new BigInteger[] { BigInteger.ONE.add(BigInteger.ONE), BigInteger.ONE }
	The (unencrypted) [alpha, beta] representation of 2.

Detailed Description

ElGamal encryption of an integer.

Author

Thomas Leaute, Eric Zbinden

Constructor & Destructor Documentation

ElGamalBigInteger() [1/3]

frodo2.solutionSpaces.crypto.ElGamalBigInteger.ElGamalBigInteger

(

)

Used for externalization only.

Referenced by add(), max(), and min().

ElGamalBigInteger() [2/3]

frodo2.solutionSpaces.crypto.ElGamalBigInteger.ElGamalBigInteger	(	final AddableInteger	value,
		final int	size )

Constructor.

Parameters

value	the cleartext value
size	the size of the vector of this ElGamal number

Note

The result is not truly encrypted yet

References frodo2.solutionSpaces.AddableInteger.intValue(), ONE, and TWO.

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ElGamalBigInteger() [3/3]

frodo2.solutionSpaces.crypto.ElGamalBigInteger.ElGamalBigInteger ( BigInteger vector[][] )

package

Constructor.

Parameters

vector

the internal representation of an ElGamalBigInteger

References vector.

Member Function Documentation

add()

ElGamalBigInteger frodo2.solutionSpaces.crypto.ElGamalBigInteger.add

(

final AddableInteger

other

)

See also

AddableLimited#add(Addable)

Note

The result is not truly encrypted yet

References ElGamalBigInteger(), frodo2.solutionSpaces.AddableInteger.intValue(), min(), and ONE.

Referenced by frodo2.solutionSpaces.crypto.ElGamalSchemeTest.add().

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equals()

boolean frodo2.solutionSpaces.crypto.ElGamalBigInteger.equals

(

Object

o

)

See also

java.lang.Object#equals(java.lang.Object)

externalize()

final boolean frodo2.solutionSpaces.crypto.ElGamalBigInteger.externalize

(

)

See also

AddableLimited.externalize()

Implements frodo2.solutionSpaces.AddableLimited< A extends Addable< A >, M extends AddableLimited< A, M >.

max()

ElGamalBigInteger frodo2.solutionSpaces.crypto.ElGamalBigInteger.max

(

ElGamalBigInteger

other

)

See also

AddableLimited#max(AddableLimited)

Todo

Auto-generated method stub

References ElGamalBigInteger().

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min()

ElGamalBigInteger frodo2.solutionSpaces.crypto.ElGamalBigInteger.min

(

final ElGamalBigInteger

other

)

See also

AddableLimited#min(AddableLimited)

References ElGamalBigInteger(), and vector.

Referenced by add(), and frodo2.solutionSpaces.crypto.ElGamalSchemeTest.min().

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readExternal()

void frodo2.solutionSpaces.crypto.ElGamalBigInteger.readExternal

(

ObjectInput

in

)

throws IOException, ClassNotFoundException

See also

java.io.Externalizable#readExternal(java.io.ObjectInput)

readResolve()

Object frodo2.solutionSpaces.crypto.ElGamalBigInteger.readResolve

(

)

See also

AddableLimited.readResolve()

Implements frodo2.solutionSpaces.AddableLimited< A extends Addable< A >, M extends AddableLimited< A, M >.

toString()

String frodo2.solutionSpaces.crypto.ElGamalBigInteger.toString

(

)

See also

java.lang.Object#toString()

writeExternal()

void frodo2.solutionSpaces.crypto.ElGamalBigInteger.writeExternal

(

ObjectOutput

out

)

throws IOException

See also

java.io.Externalizable#writeExternal(java.io.ObjectOutput)

Member Data Documentation

ONE

BigInteger [] frodo2.solutionSpaces.crypto.ElGamalBigInteger.ONE = new BigInteger[] { BigInteger.ONE, BigInteger.ONE }

staticprivate

The (unencrypted) [alpha, beta] representation of 1.

Referenced by add(), and ElGamalBigInteger().

TWO

BigInteger [] frodo2.solutionSpaces.crypto.ElGamalBigInteger.TWO = new BigInteger[] { BigInteger.ONE.add(BigInteger.ONE), BigInteger.ONE }

staticprivate

The (unencrypted) [alpha, beta] representation of 2.

Referenced by ElGamalBigInteger().

vector

BigInteger [][] frodo2.solutionSpaces.crypto.ElGamalBigInteger.vector

package

A vector of pairs that represents this ElGamalBigInteger as [[alpha1, beta1], [alpha2, beta2], ... ].

Referenced by frodo2.solutionSpaces.crypto.ElGamalScheme.decrypt(), ElGamalBigInteger(), min(), frodo2.solutionSpaces.crypto.ElGamalScheme.partialDecrypt(), and frodo2.solutionSpaces.crypto.ElGamalScheme.reencrypt().

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

• src/frodo2/solutionSpaces/crypto/ElGamalBigInteger.java