Package org.mozilla.jss.pkcs11

Class PK11KeyGenerator

java.lang.Object

org.mozilla.jss.pkcs11.PK11KeyGenerator

All Implemented Interfaces:

KeyGenerator

public final class PK11KeyGenerator
extends Object
implements KeyGenerator

Nested Class Summary

Nested classes/interfaces inherited from interface org.mozilla.jss.crypto.KeyGenerator

KeyGenerator.CharToByteConverter

Method Summary

Modifier and Type	Method	Description
SymmetricKey	clone(SymmetricKey key)	Allows a SymmetricKey to be cloned on a different token.
static SymmetricKey	clone(SymmetricKey key, PK11Token token)	Allows a SymmetricKey to be cloned on a different token.
SymmetricKey	generate()	Generates the key.
byte[]	generatePBE_IV()	Generates an Initialization Vector using a PBE algorithm.
void	initialize(int strength)
void	initialize(AlgorithmParameterSpec parameters)
void	sensitiveKeys(boolean sensitive)	Tells the generator to generate sensitive or insensitive keys.
void	setCharToByteConverter(KeyGenerator.CharToByteConverter charToByte)	Sets the character to byte converter for passwords.
void	setKeyUsages(long opFlags)
void	setKeyUsages(SymmetricKey.Usage[] usages)
void	temporaryKeys(boolean temp)	Tells the generator to generate temporary or permanent keys.

Methods inherited from class java.lang.Object

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

Method Details

setCharToByteConverter

public void setCharToByteConverter(KeyGenerator.CharToByteConverter charToByte)

Sets the character to byte converter for passwords. The default conversion is UTF8 with no null termination.

Specified by:

setCharToByteConverter in interface KeyGenerator

Parameters:

charToByte - Character-to-byte converter.

initialize

public void initialize(int strength)
                throws InvalidAlgorithmParameterException

Specified by:

initialize in interface KeyGenerator

Parameters:

strength - Key size in bits. Must be evenly divisible by 8.

Throws:

InvalidAlgorithmParameterException - If parameter is invalid.

initialize

public void initialize(AlgorithmParameterSpec parameters)
                throws InvalidAlgorithmParameterException

Specified by:

initialize in interface KeyGenerator

Throws:

InvalidAlgorithmParameterException

setKeyUsages

public void setKeyUsages(SymmetricKey.Usage[] usages)

Specified by:

setKeyUsages in interface KeyGenerator

Parameters:

usages - The operations the key will be used for after it is generated. You have to specify these so that the key can be properly marked with the operations it supports. Some PKCS #11 tokens require that a key be marked for an operation before it can perform that operation. The default is SymmetricKey.Usage.SIGN and SymmetricKey.Usage.ENCRYPT.

setKeyUsages

public void setKeyUsages(long opFlags)

temporaryKeys

public void temporaryKeys(boolean temp)

Description copied from interface: KeyGenerator

Tells the generator to generate temporary or permanent keys. Temporary keys are not written permanently to the token. They are destroyed by the garbage collector. If this method is not called, the default is temporary keys.

Specified by:

temporaryKeys in interface KeyGenerator

Parameters:

temp - True to generate temporary key.

sensitiveKeys

public void sensitiveKeys(boolean sensitive)

Description copied from interface: KeyGenerator

Tells the generator to generate sensitive or insensitive keys. Certain attributes of a sensitive key cannot be revealed in plaintext outside the token. If this method is not called, the default is token dependent.

Specified by:

sensitiveKeys in interface KeyGenerator

Parameters:

sensitive - True to generate sensitive.

generate

public SymmetricKey generate()
                      throws IllegalStateException,
TokenException,
CharConversionException

Generates the key. This is the public interface, the actual work is done by native methods.

Specified by:

generate in interface KeyGenerator

Returns:

Symmetric key.

Throws:

IllegalStateException - If key generation failed.

TokenException - If an error occurred in the token.

CharConversionException - If an encoding error occurred.

generatePBE_IV

public byte[] generatePBE_IV()
                      throws TokenException,
CharConversionException

Generates an Initialization Vector using a PBE algorithm. In order to call this method, the algorithm must be a PBE algorithm, and the KeyGenerator must have been initialized with an instance of PBEKeyGenParams.

Specified by:

generatePBE_IV in interface KeyGenerator

Returns:

The initialization vector derived from the password and salt using the PBE algorithm.

Throws:

TokenException - If an error occurs on the CryptoToken while generating the IV.

CharConversionException - If an encoding error occurred.

clone

public SymmetricKey clone(SymmetricKey key)
                   throws SymmetricKey.NotExtractableException,
InvalidKeyException,
TokenException

Allows a SymmetricKey to be cloned on a different token.

Specified by:

clone in interface KeyGenerator

Parameters:

key - Symmetric key.

Returns:

Cloned symmetric key.

Throws:

SymmetricKey.NotExtractableException - If the key material cannot be extracted from the current token.

InvalidKeyException - If the owning token cannot process the key to be cloned.

TokenException - If an error occurred in the token.

clone

public static SymmetricKey clone(SymmetricKey key,
 PK11Token token)
                          throws SymmetricKey.NotExtractableException,
InvalidKeyException,
TokenException

Allows a SymmetricKey to be cloned on a different token.

Parameters:

key - The key to clone.

token - The token on which to clone the key.

Throws:

SymmetricKey.NotExtractableException - If the key material cannot be extracted from the current token.

InvalidKeyException - If the owning token cannot process the key to be cloned.

TokenException