anon.crypto
Class AsymmetricCryptoKeyPair

java.lang.Object
  anon.crypto.AsymmetricCryptoKeyPair

Direct Known Subclasses:

DSAKeyPair, ECKeyPair, RSAKeyPair

public class AsymmetricCryptoKeyPair
extends java.lang.Object

A key pair used for signing and encryption with an asymmetric cryptographic algorithm.

Author:

Rolf Wendolsky

Field Summary

private static MyDSAPrivateKey	dsaKey
private static MyECPrivateKey	ecKey
static int	KEY_LENGTH_1024
static int	KEY_LENGTH_512
private IMyPrivateKey	m_privateKey
private IMyPublicKey	m_publicKey
private static java.util.Vector	ms_privateKeyClasses Stores all registered private key classes.
private static java.util.Vector	ms_publicKeyClasses Stores all registered public key classes.
private static MyRSAPrivateKey	rsaKey

Constructor Summary

AsymmetricCryptoKeyPair(IMyPrivateKey a_privateKey)
Creates a new key pair from a private key.

AsymmetricCryptoKeyPair(org.bouncycastle.asn1.pkcs.PrivateKeyInfo a_keyInfo)
Creates a new key pair from a PrivateKeyInfo.

Method Summary

private static java.security.Key	createAsymmetricCryptoKey(java.lang.Object a_keyInfo, java.util.Enumeration a_keyClasses)
static IMyPublicKey	createPublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo a_keyInfo) Creates a new public key from a SubjectPublicKeyInfo.
IMyPrivateKey	getPrivate() Returns the private key.
private static java.util.Enumeration	getPrivateKeyClasses() Returns all registered private key classes.
IMyPublicKey	getPublic() Returns the public key.
private static java.util.Enumeration	getPublicKeyClasses() Returns all registered public key classes.
protected static boolean	isValidKeyPair(AsymmetricCryptoKeyPair a_keyPair) Tests if a given key pair is a valid key pair.

Methods inherited from class java.lang.Object

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

Field Detail

KEY_LENGTH_512

public static final int KEY_LENGTH_512

See Also:

Constant Field Values

KEY_LENGTH_1024

public static final int KEY_LENGTH_1024

See Also:

Constant Field Values

dsaKey

private static final MyDSAPrivateKey dsaKey

rsaKey

private static final MyRSAPrivateKey rsaKey

ecKey

private static final MyECPrivateKey ecKey

ms_privateKeyClasses

private static java.util.Vector ms_privateKeyClasses

Stores all registered private key classes.

ms_publicKeyClasses

private static java.util.Vector ms_publicKeyClasses

Stores all registered public key classes.

m_privateKey

private IMyPrivateKey m_privateKey

m_publicKey

private IMyPublicKey m_publicKey

Constructor Detail

AsymmetricCryptoKeyPair

public AsymmetricCryptoKeyPair(IMyPrivateKey a_privateKey)

Creates a new key pair from a private key.

Parameters:

a_privateKey - a private key

AsymmetricCryptoKeyPair

public AsymmetricCryptoKeyPair(org.bouncycastle.asn1.pkcs.PrivateKeyInfo a_keyInfo)
                        throws java.security.InvalidKeyException

Creates a new key pair from a PrivateKeyInfo. It does this by creating a new instance of all available private key classes with the PrivateKeyInfo as constructor argument. Therefore, all private key classes that should be able to be loaded dynamically must implement a constructor that has only one argument - a PrivateKeyInfo.

Parameters:

a_keyInfo - a PrivateKeyInfo object

Throws:

java.security.InvalidKeyException - if no private key could be created from this key info

See Also:

IMyPrivateKey, ClassUtil.loadClasses()

Method Detail

createPublicKey

public static final IMyPublicKey createPublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo a_keyInfo)
                                          throws java.security.InvalidKeyException

Creates a new public key from a SubjectPublicKeyInfo. It does this by creating a new instance of all available public key classes with the SubjectPublicKeyInfo as constructor argument. Therefore, all public key classes that should be able to be loaded dynamically must implement a constructor that has only one argument - a SubjectPublicKeyInfo.

Parameters:

a_keyInfo - a SubjectPublicKeyInfo describing a public key

Returns:

the corresponding public key to this key info

Throws:

java.security.InvalidKeyException - if no public key could be created from this key info

See Also:

ClassUtil.loadClasses(), IMyPublicKey

getPrivate

public final IMyPrivateKey getPrivate()

Returns the private key.

Returns:

the private key

getPublic

public final IMyPublicKey getPublic()

Returns the public key.

Returns:

the public key

isValidKeyPair

protected static final boolean isValidKeyPair(AsymmetricCryptoKeyPair a_keyPair)

Tests if a given key pair is a valid key pair. Key pair create or getInstance methods should not return a key pair the has not been tested with this method!

Parameters:

a_keyPair - an AsymmetricKeyPair

Returns:

true if the key pair is valid; false otherwise

createAsymmetricCryptoKey

private static java.security.Key createAsymmetricCryptoKey(java.lang.Object a_keyInfo,
                                                           java.util.Enumeration a_keyClasses)
                                                    throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

getPrivateKeyClasses

private static java.util.Enumeration getPrivateKeyClasses()

Returns all registered private key classes.

Returns:

all registered private key classes

See Also:

ClassUtil.loadClasses(), IMyPrivateKey

getPublicKeyClasses

private static java.util.Enumeration getPublicKeyClasses()

Returns all registered public key classes.

Returns:

all registered public key classes

See Also:

ClassUtil.loadClasses(), IMyPublicKey