iaik.security.provider

Class IAIKMD

java.lang.Object

java.util.Dictionary<K,V>

java.util.Hashtable<java.lang.Object,java.lang.Object>

java.util.Properties

java.security.Provider

iaik.utils.ExtendedProvider

iaik.security.provider.IAIKMD

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.Object,java.lang.Object>

public class IAIKMD
extends ExtendedProvider

This class implements a "subsidiary" provider for the IAIK provider for fixing a JSSE MessageDigest Cloneable bug.

Some versions of JSSE (e.g. Java 11) may contain a bug (https://bugs.openjdk.java.net/browse/JDK-8214098) that may cause a TLS handshake to fail with an UnsupportedOperationException if an MessageDigest engine is used that implements the Cloneable interface and is extended from the java.security.MessageDigest class.

This provider contains MessageDigest engines for the message digest algorithms commonly used by JSSE for TLS ("MD5", "SHA", "SHA-256", "SHA-384"). The MessageDigest engines of the IAIK-MD provider simply wrap around the corresponding MessageDigest implementations of the IAIK provider but are extended from the MessageDigestSpi. For that reason the IAIK provider can be used with affected JSSE versions when installing the IAIK-MD provider as first provider in front of the IAIK provider:

 Security.insertProviderAt(new IAIKMD(), 1);
 Security.insertProviderAt(new IAIK(), 2);
 

Alternatively you may call method {@link #addAsProvider() IAIKMD.addAsProvider(); which installs IAIKMD as first and IAIK as second provider.

See Also:

SHA512, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.security.Provider

java.security.Provider.Service

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Constructors

Constructor and Description
IAIKMD() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
static void	addAsProvider() Static method which installs the IAIK-MD provider as first provider and the IAIK provider as second provider.
static void	addAsProvider(boolean printStatusInfo) Static method which installs the IAIK-MD provider as first provider and the IAIK provider as second provider and prints some system properties if desired.
static IAIKMD	getInstance() Returns an instance of this provider.

Methods inherited from class iaik.utils.ExtendedProvider

isAvailable, puta, putc, putc

Methods inherited from class java.security.Provider

clear, elements, entrySet, get, getInfo, getName, getProperty, getService, getServices, getVersion, keys, keySet, load, put, putAll, putService, remove, removeService, toString, values

Methods inherited from class java.util.Properties

getProperty, list, list, load, loadFromXML, propertyNames, save, setProperty, store, store, storeToXML, storeToXML, stringPropertyNames

Methods inherited from class java.util.Hashtable

clone, contains, containsKey, containsValue, equals, hashCode, isEmpty, rehash, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IAIKMD

public IAIKMD()

Default constructor.

Method Detail

getInstance

public static IAIKMD getInstance()

Returns an instance of this provider. Identical to calling the constructor except that it returns a previously created instance if available.

Returns:

an instance of this provider

addAsProvider

public static void addAsProvider()

Static method which installs the IAIK-MD provider as first provider and the IAIK provider as second provider.

addAsProvider

public static void addAsProvider(boolean printStatusInfo)

Static method which installs the IAIK-MD provider as first provider and the IAIK provider as second provider and prints some system properties if desired.

Parameters:

printStatusInfo - prints some status information and system properties