RSAKeyPairGenerator

extends KeyPairGeneratorSpi

java.lang.Object
↳	java.security.KeyPairGeneratorSpi
	↳	sun.security.rsa.RSAKeyPairGenerator

Class Overview

RSA keypair generation. Standard algorithm, minimum key length 512 bit. We generate two random primes until we find two where phi is relative prime to the public exponent. Default exponent is 65537. It has only bit 0 and bit 4 set, which makes it particularly efficient.

Summary

Public Constructors
	RSAKeyPairGenerator()

Public Methods
KeyPair	generateKeyPair() Generates a key pair.
void	initialize(AlgorithmParameterSpec params, SecureRandom random) Initializes the key pair generator using the specified parameter set and user-provided source of randomness.
void	initialize(int keySize, SecureRandom random) Initializes the key pair generator for a certain keysize, using the default parameter set.

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Inherited Methods

From class java.security.KeyPairGeneratorSpi

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

Public Constructors

public RSAKeyPairGenerator ()

Public Methods

public KeyPair generateKeyPair ()

Generates a key pair. Unless an initialization method is called using a KeyPairGenerator interface, algorithm-specific defaults will be used. This will generate a new key pair every time it is called.

Returns

the newly generated KeyPair

public void initialize (AlgorithmParameterSpec params, SecureRandom random)

Initializes the key pair generator using the specified parameter set and user-provided source of randomness.

This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to initialize the key pair generator. Such an override is expected to throw an InvalidAlgorithmParameterException if a parameter is inappropriate for this key pair generator. If this method is not overridden, it always throws an UnsupportedOperationException.

Parameters

params	the parameter set used to generate the keys.
random	the source of randomness for this generator.

Throws

InvalidAlgorithmParameterException

public void initialize (int keySize, SecureRandom random)

Initializes the key pair generator for a certain keysize, using the default parameter set.

Parameters

keySize	the keysize. This is an algorithm-specific metric, such as modulus length, specified in number of bits.
random	the source of randomness for this generator.

Classes

RSAKeyPairGenerator

Class Overview

Summary

Public Constructors

public RSAKeyPairGenerator ()

Public Methods

public KeyPair generateKeyPair ()

Returns

public void initialize (AlgorithmParameterSpec params, SecureRandom random)

Parameters

Throws

public void initialize (int keySize, SecureRandom random)

Parameters