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sun.security.pkcs11

pack-priv final Class KeyCache

extends Object
Class Inheritance
Imports
java.util.*, java.lang.ref.*, java.security.Key, sun.security.util.Cache
Key to P11Key translation cache. The PKCS#11 token can only perform operations on keys stored on the token (permanently or temporarily). That means that in order to allow the PKCS#11 provider to use keys from other providers, we need to transparently convert them to P11Keys. The engines do that using (Secret)KeyFactories, which in turn use this class as a cache. There are two KeyCache instances per provider, one for secret keys and one for public and private keys.
Author
Andreas Sterbenz
Since
1.5

Nested and Inner Type Summary

Modifier and TypeClass and Description
private static class
KeyCache.IdentityWrapper

Field Summary

Modifier and TypeField and Description
private WeakReference<Map<Key, P11Key>>
cacheReference

private final Cache<KeyCache.IdentityWrapper, P11Key>
strongCache

Constructor Summary

AccessConstructor and Description
pack-priv
KeyCache()

Method Summary

Modifier and TypeMethod and Description
pack-priv synchronized void
clear()

pack-priv synchronized P11Key
get(Key key)

pack-priv synchronized void
put(Key key, P11Key p11Key)

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

cacheReferenceback to summary
private WeakReference<Map<Key, P11Key>> cacheReference
strongCacheback to summary
private final Cache<KeyCache.IdentityWrapper, P11Key> strongCache

Constructor Detail

KeyCacheback to summary
pack-priv KeyCache()

Method Detail

clearback to summary
pack-priv synchronized void clear()
getback to summary
pack-priv synchronized P11Key get(Key key)
putback to summary
pack-priv synchronized void put(Key key, P11Key p11Key)
sun.security.pkcs11 back to summary

private final Class KeyCache.IdentityWrapper

extends Object
Class Inheritance

Field Summary

Modifier and TypeField and Description
pack-priv final Object
obj

Constructor Summary

AccessConstructor and Description
pack-priv
IdentityWrapper(Object obj)

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
o)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

objback to summary
pack-priv final Object obj

Constructor Detail

IdentityWrapperback to summary
pack-priv IdentityWrapper(Object obj)

Method Detail

equalsback to summary
public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
o:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object