java.lang.Object java.util.Dictionary java.util.Hashtable java.util.Properties java.security.Provider
This class represents a "provider" for the Java Security API, where a provider implements some or all parts of Java Security. Services that a provider may implement include:
Each provider has a name and a version number, and is configured in each runtime it is installed in.
See The Provider Class in the "Java Cryptography Architecture API Specification & Reference" for information about how a particular type of provider, the cryptographic service provider, works and is installed. However, please note that a provider can be used to implement any security service in Java that uses a pluggable architecture with a choice of implementations that fit underneath.
Some provider implementations may encounter unrecoverable internal errors during their operation, for example a failure to communicate with a security token. A ProviderException should be used to indicate such errors.
The service type Provider is reserved for use by the security framework. Services of this type cannot be added, removed, or modified by applications. The following attributes are automatically placed in each Provider object:
Nested Class Summary | |
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static class |
Provider.Service
The description of a security service. |
Field Summary |
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Fields inherited from class java.util. Properties |
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defaults |
Constructor Summary | |
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protected |
Provider
(
String
name, double version,
String
info) Constructs a provider with the specified name, version number, and information. |
Method Summary | |
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void |
clear
() Clears this provider so that it no longer contains the properties used to look up facilities implemented by the provider. |
Set |
entrySet
() Returns an unmodifiable Set view of the property entries contained in this Provider. |
String |
getInfo
() Returns a human-readable description of the provider and its services. |
String |
getName
() Returns the name of this provider. |
Provider.Service |
getService
(
String
type,
String
Get the service describing this Provider's implementation of the specified type of this algorithm or alias. |
Set < Provider.Service |
getServices
()
Get an unmodifiable Set of all services supported by this Provider. |
double |
getVersion
() Returns the version number for this provider. |
Set |
keySet
() Returns an unmodifiable Set view of the property keys contained in this provider. |
void |
load
(
InputStream
inStream) Reads a property list (key and element pairs) from the input stream. |
Object |
put
(
Object
key,
Object
value) Sets the key property to have the specified value. |
void |
putAll
(
Map
t) Copies all of the mappings from the specified Map to this provider. |
protected void |
putService
(
Provider.Service
Add a service. |
Object |
remove
(
Object
key) Removes the key property (and its corresponding value). |
protected void |
removeService
(
Provider.Service
Remove a service previously added using putService() |
String |
toString
() Returns a string with the name and the version number of this provider. |
Collection |
values
() Returns an unmodifiable Collection view of the property values contained in this provider. |
Methods inherited from class java.util. Properties |
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getProperty , getProperty , list , list , loadFromXML , propertyNames , save , setProperty , store , storeToXML , storeToXML |
Methods inherited from class java.util. Hashtable |
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clone , contains , containsKey , containsValue , elements , equals , get , hashCode , isEmpty , keys , put , putAll , rehash , size |
Methods inherited from class java.lang. Object |
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finalize , getClass , notify , notifyAll , wait , wait , wait |
Constructor Detail |
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protected Provider(String name, double version, String info)
Method Detail |
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public String getName()
public double getVersion()
public String getInfo()
public String toString()
public void clear()
First, if there is a security manager, its checkSecurityAccess method is called with the string "clearProviderProperties."+name (where name is the provider name) to see if it's ok to clear this provider. If the default implementation of checkSecurityAccess is used (that is, that method is not overriden), then this results in a call to the security manager's checkPermission method with a SecurityPermission("clearProviderProperties."+name) permission.
public void load(InputStream inStream) throws IOException
public void putAll(Map t)
public Set entrySet()
public Set keySet()
public Collection values()
public Object put(Object key, Object value)
First, if there is a security manager, its checkSecurityAccess method is called with the string "putProviderProperty."+name, where name is the provider name, to see if it's ok to set this provider's property values. If the default implementation of checkSecurityAccess is used (that is, that method is not overriden), then this results in a call to the security manager's checkPermission method with a SecurityPermission("putProviderProperty."+name) permission.
public Object remove(Object key)
First, if there is a security manager, its checkSecurityAccess method is called with the string
"removeProviderProperty."+name,
""removeProviderProperty."+name,
where name is the provider name, to see if it's ok to remove this provider's properties. If the default implementation of checkSecurityAccess is used (that is, that method is not overriden), then this results in a call to the security manager's checkPermission method with a SecurityPermission("removeProviderProperty."+name) permission.
public Provider.ServicegetService ( String type, String algorithm)
public Set< Provider.Service> getServices ()
protected void putService ( Provider.Service s)
Also, if there is a security manager, its checkSecurityAccess method is called with the string "putProviderProperty."+name, where name is the provider name, to see if it's ok to set this provider's property values. If the default implementation of checkSecurityAccess is used (that is, that method is not overriden), then this results in a call to the security manager's checkPermission method with a SecurityPermission("putProviderProperty."+name) permission.
protected void removeService ( Provider.Service s)
Also, if there is a security manager, its checkSecurityAccess method is called with the string "removeProviderProperty."+name, where name is the provider name, to see if it's ok to remove this provider's properties. If the default implementation of checkSecurityAccess is used (that is, that method is not overriden), then this results in a call to the security manager's checkPermission method with a SecurityPermission("removeProviderProperty."+name) permission.