ExemptionMechanismSpi - Android SDK

Summary: Ctors | Protected Methods | Inherited Methods | [Expand All]

Added in API level 1

public abstract class

ExemptionMechanismSpi

extends Object

java.lang.Object
↳	javax.crypto.ExemptionMechanismSpi

Class Overview

The Service Provider Interface (SPI) definition for the ExemptionMechanism class.

Summary

Public Constructors
	ExemptionMechanismSpi() Creates a new `ExemptionMechanismSpi` instance.

Protected Methods
abstract byte[]	engineGenExemptionBlob() Generates the result key blob for this exemption mechanism.
abstract int	engineGenExemptionBlob(byte[] output, int outputOffset) Generates the result key blob for this exemption mechanism and stores it into the `output` buffer at offset `outputOffset`.
abstract int	engineGetOutputSize(int inputLen) Returns the size in bytes for the output buffer needed to hold the output of the next `engineGenExemptionBlob()` call, given the specified `inputLen` (in bytes).
abstract void	engineInit(Key key, AlgorithmParameters params) Initializes this `ExemptionMechanism` instance with the specified key and algorithm parameters.
abstract void	engineInit(Key key, AlgorithmParameterSpec params) Initializes this `ExemptionMechanism` instance with the specified key and algorithm parameters.
abstract void	engineInit(Key key) Initializes this `ExemptionMechanism` instance with the specified key.

[Expand]

Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Constructors

public ExemptionMechanismSpi ()

Added in API level 1

Creates a new ExemptionMechanismSpi instance.

Protected Methods

protected abstract byte[] engineGenExemptionBlob ()

Added in API level 1

Generates the result key blob for this exemption mechanism.

Returns

the result key blob for this exemption mechanism.

Throws

ExemptionMechanismException	if error(s) occur during generation.

protected abstract int engineGenExemptionBlob (byte[] output, int outputOffset)

Added in API level 1

Generates the result key blob for this exemption mechanism and stores it into the output buffer at offset outputOffset.

Parameters

output	the output buffer for the result key blob.
outputOffset	the offset in the output buffer to start.

Returns

the number of bytes written to the output buffer.

Throws

ShortBufferException	if the provided buffer is too small for the result key blob.
ExemptionMechanismException	if error(s) occur during generation.

protected abstract int engineGetOutputSize (int inputLen)

Added in API level 1

Returns the size in bytes for the output buffer needed to hold the output of the next engineGenExemptionBlob() call, given the specified inputLen (in bytes).

Parameters

inputLen	the specified input length (in bytes).

Returns

the size in bytes for the output buffer.

protected abstract void engineInit (Key key, AlgorithmParameters params)

Added in API level 1

Initializes this ExemptionMechanism instance with the specified key and algorithm parameters.

Parameters

key	the key to initialize this instance with.
params	the parameters for this exemption mechanism algorithm.

Throws

InvalidKeyException	if the key cannot be used to initialize this mechanism.
InvalidAlgorithmParameterException	if the parameters cannot be used to initialize this mechanism.
ExemptionMechanismException	if error(s) occur during initialization.

protected abstract void engineInit (Key key, AlgorithmParameterSpec params)

Added in API level 1

Initializes this ExemptionMechanism instance with the specified key and algorithm parameters.

Parameters

key	the key to initialize this instance with.
params	the parameters for this exemption mechanism algorithm.

Throws

InvalidKeyException	if the key cannot be used to initialize this mechanism.
InvalidAlgorithmParameterException	the the parameters cannot be used to initialize this mechanism.
ExemptionMechanismException	if error(s) occur during initialization.

protected abstract void engineInit (Key key)

Added in API level 1

Initializes this ExemptionMechanism instance with the specified key.

Parameters

key	the key to initialize this instance with.

Throws

InvalidKeyException	if the key cannot be used to initialize this mechanism.
ExemptionMechanismException	if error(s) occur during initialization.

Results

Interfaces

Classes

Exceptions

ExemptionMechanismSpi

Class Overview

Summary

Public Constructors

public ExemptionMechanismSpi ()

Protected Methods

protected abstract byte[] engineGenExemptionBlob ()

Returns

Throws

protected abstract int engineGenExemptionBlob (byte[] output, int outputOffset)

Parameters

Returns

Throws

protected abstract int engineGetOutputSize (int inputLen)

Parameters

Returns

protected abstract void engineInit (Key key, AlgorithmParameters params)

Parameters

Throws

protected abstract void engineInit (Key key, AlgorithmParameterSpec params)

Parameters

Throws

protected abstract void engineInit (Key key)

Parameters

Throws