com.sshtools.ssh.components

Class ComponentManager

java.lang.Object

com.sshtools.ssh.components.ComponentManager

Direct Known Subclasses:

JCEComponentManager

public abstract class ComponentManager
extends Object

An abstract class that manages the components used by the SSH API. All algorithm implementations are obtained through a single provider. One implementation is provided the JCEComponentManager that uses the Java runtime JCE provider(s) algorithm implementations.

Author:

Lee David Painter

Constructor Summary

Constructors

Constructor and Description
ComponentManager()

Method Summary

Methods

Modifier and Type	Method and Description
abstract SshDsaPrivateKey	createDsaPrivateKey(BigInteger p, BigInteger q, BigInteger g, BigInteger x, BigInteger y) Create an instance of a DSA private key.
abstract SshDsaPublicKey	createDsaPublicKey() Create an uninitialized instance of a DSA public key
abstract SshDsaPublicKey	createDsaPublicKey(BigInteger p, BigInteger q, BigInteger g, BigInteger y) Create an instance of a DSA public key.
abstract SshRsaPrivateCrtKey	createRsaPrivateCrtKey(BigInteger modulus, BigInteger publicExponent, BigInteger privateExponent, BigInteger primeP, BigInteger primeQ, BigInteger crtCoefficient) Create an instance of an RSA co-effecient private key.
abstract SshRsaPrivateCrtKey	createRsaPrivateCrtKey(BigInteger modulus, BigInteger publicExponent, BigInteger privateExponent, BigInteger primeP, BigInteger primeQ, BigInteger primeExponentP, BigInteger primeExponentQ, BigInteger crtCoefficient) Create an instance of an RSA co-efficent private key.
abstract SshRsaPrivateKey	createRsaPrivateKey(BigInteger modulus, BigInteger privateExponent) Create an instance of an RSA private key.
abstract SshRsaPublicKey	createRsaPublicKey(BigInteger modulus, BigInteger publicExponent) Create an instance of an RSA public key.
abstract SshRsaPublicKey	createSsh2RsaPublicKey() Create an instance of an SSH2 RSA public key.
abstract SshKeyPair	generateDsaKeyPair(int bits) Generate a new DSA public/private key pair.
abstract SshKeyPair	generateRsaKeyPair(int bits) Generate an RSA public/private pair.
static ComponentManager	getInstance() Get the installed component manager.
static boolean	getPerContextAlgorithmPreferences()
abstract SshSecureRandomGenerator	getRND() Get the secure random number generator.
protected void	init()
protected abstract void	initializeDigestFactory(ComponentFactory digests) Initialize the digest factory.
protected abstract void	initializeHmacFactory(ComponentFactory hmacs) Initialize the SSH2 HMAC factory.
protected abstract void	initializeKeyExchangeFactory(ComponentFactory keyexchange) Initialize the SSH2 key exchange factory.
protected abstract void	initializePublicKeyFactory(ComponentFactory publickeys) Initialize the public key factory.
protected abstract void	initializeSsh2CipherFactory(ComponentFactory ciphers) Initialize the SSH2 cipher factory.
static boolean	isEnableNoneCipher()
static boolean	isEnableNoneMac()
static void	setEnableNoneCipher(boolean enableNoneCipher)
static void	setEnableNoneMac(boolean enableNoneCipher)
static void	setInstance(ComponentManager instance) Overide the installed component manager with an alternative implementation.
static void	setPerContextAlgorithmPreferences(boolean enable)
ComponentFactory	supportedDigests() The supported digests
ComponentFactory	supportedHMacsCS() The supported SSH2 Hmacs.
ComponentFactory	supportedHMacsSC() The supported SSH2 Hmacs.
ComponentFactory	supportedKeyExchanges() The supported SSH2 key exchanges.
ComponentFactory	supportedPublicKeys() The supported public keys
ComponentFactory	supportedSsh2CiphersCS() The supported SSH2 ciphers.
ComponentFactory	supportedSsh2CiphersSC() The supported SSH2 ciphers.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentManager

public ComponentManager()

Method Detail

isEnableNoneCipher

public static boolean isEnableNoneCipher()

setEnableNoneCipher

public static void setEnableNoneCipher(boolean enableNoneCipher)

isEnableNoneMac

public static boolean isEnableNoneMac()

setEnableNoneMac

public static void setEnableNoneMac(boolean enableNoneCipher)

setPerContextAlgorithmPreferences

public static void setPerContextAlgorithmPreferences(boolean enable)

getPerContextAlgorithmPreferences

public static boolean getPerContextAlgorithmPreferences()

getInstance

public static ComponentManager getInstance()

Get the installed component manager. Don't want to initialize this at class load time, so use a singleton instead. Initialized on the first call to getInstance.

Returns:

ComponentManager

init

protected void init()
             throws SshException

Throws:

SshException

initializeSsh2CipherFactory

protected abstract void initializeSsh2CipherFactory(ComponentFactory ciphers)

Initialize the SSH2 cipher factory. These ciphers are exclusively used by the SSH2 implementation.

Parameters:

ciphers -

initializeHmacFactory

protected abstract void initializeHmacFactory(ComponentFactory hmacs)

Initialize the SSH2 HMAC factory.

Parameters:

hmacs -

initializePublicKeyFactory

protected abstract void initializePublicKeyFactory(ComponentFactory publickeys)

Initialize the public key factory.

Parameters:

publickeys -

initializeKeyExchangeFactory

protected abstract void initializeKeyExchangeFactory(ComponentFactory keyexchange)

Initialize the SSH2 key exchange factory.

Parameters:

keyexchange -

initializeDigestFactory

protected abstract void initializeDigestFactory(ComponentFactory digests)

Initialize the digest factory.

Parameters:

digests -

setInstance

public static void setInstance(ComponentManager instance)

Overide the installed component manager with an alternative implementation.

Parameters:

instance -

supportedSsh2CiphersSC

public ComponentFactory supportedSsh2CiphersSC()

The supported SSH2 ciphers.

Returns:

AbstractComponentFactory

supportedSsh2CiphersCS

public ComponentFactory supportedSsh2CiphersCS()

The supported SSH2 ciphers.

Returns:

AbstractComponentFactory

supportedHMacsSC

public ComponentFactory supportedHMacsSC()

The supported SSH2 Hmacs.

Returns:

AbstractComponentFactory

supportedHMacsCS

public ComponentFactory supportedHMacsCS()

The supported SSH2 Hmacs.

Returns:

AbstractComponentFactory

supportedKeyExchanges

public ComponentFactory supportedKeyExchanges()

The supported SSH2 key exchanges.

Returns:

AbstractComponentFactory

supportedPublicKeys

public ComponentFactory supportedPublicKeys()

The supported public keys

Returns:

AbstractComponentFactory

supportedDigests

public ComponentFactory supportedDigests()

The supported digests

Returns:

AbstractComponentFactory

generateRsaKeyPair

public abstract SshKeyPair generateRsaKeyPair(int bits)
                                       throws SshException

Generate an RSA public/private pair.

Parameters:

bits -

version -

Returns:

SshKeyPair

Throws:

SshException

createRsaPublicKey

public abstract SshRsaPublicKey createRsaPublicKey(BigInteger modulus,
                                 BigInteger publicExponent)
                                            throws SshException

Create an instance of an RSA public key.

Parameters:

modulus -

publicExponent -

version -

Returns:

SshRsaPublicKey

Throws:

SshException

createSsh2RsaPublicKey

public abstract SshRsaPublicKey createSsh2RsaPublicKey()
                                                throws SshException

Create an instance of an SSH2 RSA public key.

Returns:

SshRsaPublicKey

Throws:

SshException

createRsaPrivateKey

public abstract SshRsaPrivateKey createRsaPrivateKey(BigInteger modulus,
                                   BigInteger privateExponent)
                                              throws SshException

Create an instance of an RSA private key.

Parameters:

modulus -

privateExponent -

Returns:

SshRsaPrivateKey

Throws:

SshException

createRsaPrivateCrtKey

public abstract SshRsaPrivateCrtKey createRsaPrivateCrtKey(BigInteger modulus,
                                         BigInteger publicExponent,
                                         BigInteger privateExponent,
                                         BigInteger primeP,
                                         BigInteger primeQ,
                                         BigInteger crtCoefficient)
                                                    throws SshException

Create an instance of an RSA co-effecient private key.

Parameters:

modulus -

publicExponent -

privateExponent -

primeP -

primeQ -

crtCoefficient -

Returns:

SshRsaPrivateCrtKey

Throws:

SshException

createRsaPrivateCrtKey

public abstract SshRsaPrivateCrtKey createRsaPrivateCrtKey(BigInteger modulus,
                                         BigInteger publicExponent,
                                         BigInteger privateExponent,
                                         BigInteger primeP,
                                         BigInteger primeQ,
                                         BigInteger primeExponentP,
                                         BigInteger primeExponentQ,
                                         BigInteger crtCoefficient)
                                                    throws SshException

Create an instance of an RSA co-efficent private key.

Parameters:

modulus -

publicExponent -

privateExponent -

primeP -

primeQ -

primeExponentP -

primeExponentQ -

crtCoefficient -

Returns:

SshRsaPrivateCrtKey

Throws:

SshException

generateDsaKeyPair

public abstract SshKeyPair generateDsaKeyPair(int bits)
                                       throws SshException

Generate a new DSA public/private key pair.

Parameters:

bits -

Returns:

SshKeyPair

Throws:

SshException

createDsaPublicKey

public abstract SshDsaPublicKey createDsaPublicKey(BigInteger p,
                                 BigInteger q,
                                 BigInteger g,
                                 BigInteger y)
                                            throws SshException

Create an instance of a DSA public key.

Parameters:

p -

q -

g -

y -

Returns:

SshDsaPublicKey

Throws:

SshException

createDsaPublicKey

public abstract SshDsaPublicKey createDsaPublicKey()

Create an uninitialized instance of a DSA public key

Returns:

SshDsaPublicKey

createDsaPrivateKey

public abstract SshDsaPrivateKey createDsaPrivateKey(BigInteger p,
                                   BigInteger q,
                                   BigInteger g,
                                   BigInteger x,
                                   BigInteger y)
                                              throws SshException

Create an instance of a DSA private key.

Parameters:

p -

q -

g -

x -

y -

Returns:

SshDsaPrivateKey

Throws:

SshException

getRND

public abstract SshSecureRandomGenerator getRND()
                                         throws SshException

Get the secure random number generator.

Returns:

SshSecureRandomGenerator

Throws:

SshException