org.eclipse.californium.scandium.dtls.cipher

Class ThreadLocalCrypto<CryptoFunction>

java.lang.Object

org.eclipse.californium.scandium.dtls.cipher.ThreadLocalCrypto<CryptoFunction>

Direct Known Subclasses:

ThreadLocalCertificateFactory, ThreadLocalCipher, ThreadLocalKeyAgreement, ThreadLocalKeyFactory, ThreadLocalKeyPairGenerator, ThreadLocalMac, ThreadLocalMessageDigest, ThreadLocalSignature

public class ThreadLocalCrypto<CryptoFunction>
extends Object

Thread local crypto function. Uses ThreadLocal to cache calls to ThreadLocalCrypto.Factory.getInstance().

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ThreadLocalCrypto.Factory<CryptoFunction> Factory to create instances of crypto functions.

Constructor Summary

Constructors

Constructor and Description
ThreadLocalCrypto(ThreadLocalCrypto.Factory<CryptoFunction> factory) Create thread local crypto function.

Method Summary

Methods

Modifier and Type	Method and Description
CryptoFunction	current() Get "thread local" instance of crypto function.
CryptoFunction	currentWithCause() Get "thread local" instance of crypto function.
GeneralSecurityException	getCause() Get the failure of the initial try to instantiate the crypto function for the provided factory.
boolean	isSupported() Check, if crypto function is supported by the java-vm.

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocalCrypto

public ThreadLocalCrypto(ThreadLocalCrypto.Factory<CryptoFunction> factory)

Create thread local crypto function. Try to instance the crypto function for the provided factory. Failures may be accessed by getCause(). Use isSupported() to check, if the java-vm supports the crypto function.

Parameters:

factory - factory to create instances of the crypto function.

See Also:

ThreadLocalCipher, ThreadLocalMac, ThreadLocalMessageDigest

Method Detail

current

public CryptoFunction current()

Get "thread local" instance of crypto function.

Returns:

thread local crypto function, or null, if crypto function is not supported by the java-vm.

currentWithCause

public CryptoFunction currentWithCause()
                                throws GeneralSecurityException

Get "thread local" instance of crypto function.

Returns:

thread local crypto function.

Throws:

GeneralSecurityException - if crypto function is not supported by the java-vm.

Since:

2.3

isSupported

public final boolean isSupported()

Check, if crypto function is supported by the java-vm.

Returns:

true, if crypto function is supported by the java-vm.

getCause

public final GeneralSecurityException getCause()

Get the failure of the initial try to instantiate the crypto function for the provided factory.

Returns:

failure, or null, if no failure occurred.