org.bouncycastle.crypto.params
Class RSAKeyParameters

java.lang.Object
  org.bouncycastle.crypto.params.AsymmetricKeyParameter
      org.bouncycastle.crypto.params.RSAKeyParameters

All Implemented Interfaces:

CipherParameters, javax.security.auth.Destroyable

Direct Known Subclasses:

RSAPrivateCrtKeyParameters

public class RSAKeyParameters

extends AsymmetricKeyParameter

implements javax.security.auth.Destroyable

Constructor Summary

RSAKeyParameters(boolean isPrivate, java.math.BigInteger modulus, java.math.BigInteger exponent)

RSAKeyParameters(boolean isPrivate, java.math.BigInteger modulus, java.math.BigInteger exponent, boolean isInternal)

Method Summary

void	destroy() Destroy this object, dropping its reference to the exponent.
java.math.BigInteger	getExponent()
java.math.BigInteger	getModulus()
boolean	isDestroyed()
static java.math.BigInteger	validateModulus(java.math.BigInteger modulus)

Methods inherited from class org.bouncycastle.crypto.params.AsymmetricKeyParameter

isPrivate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RSAKeyParameters

public RSAKeyParameters(boolean isPrivate,
                        java.math.BigInteger modulus,
                        java.math.BigInteger exponent)

RSAKeyParameters

public RSAKeyParameters(boolean isPrivate,
                        java.math.BigInteger modulus,
                        java.math.BigInteger exponent,
                        boolean isInternal)

Method Detail

validateModulus

public static java.math.BigInteger validateModulus(java.math.BigInteger modulus)

getModulus

public java.math.BigInteger getModulus()

getExponent

public java.math.BigInteger getExponent()

destroy

public void destroy()

Destroy this object, dropping its reference to the exponent. The (public) modulus is retained.

As BigInteger is immutable the exponent cannot be zeroized in place; destruction drops the internal reference so the value becomes unreachable (cleared on garbage collection). After destruction getExponent() throws IllegalStateException.

This type also backs RSA public keys; destroying one of those drops the (non-secret) public exponent, which is harmless but renders the key unusable.

Specified by:

destroy in interface javax.security.auth.Destroyable

isDestroyed

public boolean isDestroyed()

Specified by:

isDestroyed in interface javax.security.auth.Destroyable