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KeyRep (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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java.security
Class KeyRep

java.lang.Object
  java.security.KeyRep

All Implemented Interfaces:

Serializable

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public class KeyRep
extends Object
implements Serializable

Standardized representation for serialized Key objects.

Note that a serialized Key may contain sensitive information which should not be exposed in untrusted environments. See the Security Appendix of the Serialization Specification for more information.

Since:

1.5

See Also:

Key, KeyFactory, SecretKeySpec, X509EncodedKeySpec, PKCS8EncodedKeySpec, Serialized Form

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Nested Class Summary
static class	KeyRep.Type           Key type.

 

Constructor Summary
KeyRep(KeyRep.Type type, String algorithm, String format, byte[] encoded)           Construct the alternate Key class.

 

Method Summary
protected  Object	readResolve()           Resolve the Key object.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

KeyRep

public KeyRep(KeyRep.Type type,
              String algorithm,
              String format,
              byte[] encoded)

Construct the alternate Key class.

Parameters:

type - either one of Type.SECRET, Type.PUBLIC, or Type.PRIVATE

algorithm - the algorithm returned from Key.getAlgorithm()

format - the encoding format returned from Key.getFormat()

encoded - the encoded bytes returned from Key.getEncoded()

Throws:

NullPointerException - if type is null, if algorithm is null, if format is null, or if encoded is null

Method Detail

readResolve

protected Object readResolve()
                      throws ObjectStreamException

Resolve the Key object.

This method supports three Type/format combinations:

• Type.SECRET/"RAW" - returns a SecretKeySpec object constructed using encoded key bytes and algorithm
• Type.PUBLIC/"X.509" - gets a KeyFactory instance for the key algorithm, constructs an X509EncodedKeySpec with the encoded key bytes, and generates a public key from the spec
• Type.PRIVATE/"PKCS#8" - gets a KeyFactory instance for the key algorithm, constructs a PKCS8EncodedKeySpec with the encoded key bytes, and generates a private key from the spec

Returns:

the resolved Key object

Throws:

NotSerializableException - if the Type/format combination is unrecognized, if the algorithm, key format, or encoded key bytes are unrecognized/invalid, of if the resolution of the key fails for any reason

ObjectStreamException

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.