程序包 java.security

类 KeyStore.PasswordProtection

java.lang.Object

java.security.KeyStore.PasswordProtection

所有已实现的接口:

KeyStore.ProtectionParameter, Destroyable

封闭类:

KeyStore

public static class KeyStore.PasswordProtection
extends Object
implements KeyStore.ProtectionParameter, Destroyable

A password-based implementation of ProtectionParameter.

从以下版本开始:

1.5

构造器概要

构造器

构造器	说明
PasswordProtection(char[] password)	Creates a password parameter.
PasswordProtection(char[] password, String protectionAlgorithm, AlgorithmParameterSpec protectionParameters)	Creates a password parameter and specifies the protection algorithm and associated parameters to use when encrypting a keystore entry.

方法概要

限定符和类型	方法	说明
void	destroy()	Clears the password.
char[]	getPassword()	Gets the password.
String	getProtectionAlgorithm()	Gets the name of the protection algorithm.
AlgorithmParameterSpec	getProtectionParameters()	Gets the parameters supplied for the protection algorithm.
boolean	isDestroyed()	Determines if password has been cleared.

从类继承的方法 java.lang.Object

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

构造器详细资料

PasswordProtection

public PasswordProtection(char[] password)

Creates a password parameter.

The specified password is cloned before it is stored in the new PasswordProtection object.

参数:

password - the password, which may be null

PasswordProtection

public PasswordProtection(char[] password,
                          String protectionAlgorithm,
                          AlgorithmParameterSpec protectionParameters)

Creates a password parameter and specifies the protection algorithm and associated parameters to use when encrypting a keystore entry.

The specified password is cloned before it is stored in the new PasswordProtection object.

参数:

password - the password, which may be null

protectionAlgorithm - the encryption algorithm name, for example, PBEWithHmacSHA256AndAES_256. See the Cipher section in the Java Cryptography Architecture Standard Algorithm Name Documentation for information about standard encryption algorithm names.

protectionParameters - the encryption algorithm parameter specification, which may be null

抛出:

NullPointerException - if protectionAlgorithm is null

从以下版本开始:

1.8

方法详细资料

getProtectionAlgorithm

public String getProtectionAlgorithm()

Gets the name of the protection algorithm. If none was set then the keystore provider will use its default protection algorithm. The name of the default protection algorithm for a given keystore type is set using the 'keystore.<type>.keyProtectionAlgorithm' security property. For example, the keystore.PKCS12.keyProtectionAlgorithm property stores the name of the default key protection algorithm used for PKCS12 keystores. If the security property is not set, an implementation-specific algorithm will be used.

返回:

the algorithm name, or null if none was set

从以下版本开始:

1.8

getProtectionParameters

public AlgorithmParameterSpec getProtectionParameters()

Gets the parameters supplied for the protection algorithm.

返回:

the algorithm parameter specification, or null, if none was set

从以下版本开始:

1.8

getPassword

public char[] getPassword()

Gets the password.

Note that this method returns a reference to the password. If a clone of the array is created it is the caller's responsibility to zero out the password information after it is no longer needed.

返回:

the password, which may be null

抛出:

IllegalStateException - if the password has been cleared (destroyed)

另请参阅:

destroy()

destroy

public void destroy()
             throws DestroyFailedException

Clears the password.

指定者:

destroy 在接口中 Destroyable

抛出:

DestroyFailedException - if this method was unable to clear the password

isDestroyed

public boolean isDestroyed()

Determines if password has been cleared.

指定者:

isDestroyed 在接口中 Destroyable

返回:

true if the password has been cleared, false otherwise