com.ibm.crypto.fips.provider

Class DSAParameters

java.lang.Object

java.security.AlgorithmParametersSpi

com.ibm.crypto.fips.provider.DSAParameters

public final class DSAParameters
extends java.security.AlgorithmParametersSpi

This class implements Digital Signature Algorithm paremters specified by com.ibm.crypto.fips.provider 186 standard.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.math.BigInteger	g
protected java.math.BigInteger	p
protected java.math.BigInteger	q

Constructor Summary

Constructors

Constructor and Description
DSAParameters()

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	engineGetEncoded() Returns the parameters in encoded bytes.
protected byte[]	engineGetEncoded(java.lang.String encodingMethod) Returns the parameters in encoded bytes with encoding method specified.
protected java.security.spec.AlgorithmParameterSpec	engineGetParameterSpec(java.lang.Class paramSpec) Return the parameter spec used by this parameter instance.
protected void	engineInit(java.security.spec.AlgorithmParameterSpec paramSpec) Initialize the DSAParameters by a DSAParameterSpec
protected void	engineInit(byte[] params) Initialize the DSAParameters by encoded bytes
protected void	engineInit(byte[] params, java.lang.String decodingMethod) Initialize the DSAParameters by encoded bytes with the specified decoding method.
protected java.lang.String	engineToString()
protected byte[]	internalGetEncoded() Returns the parameters in encoded bytes.
protected byte[]	internalGetEncoded(java.lang.String encodingMethod) Returns the parameters in encoded bytes with encoding method specified.
protected java.security.spec.AlgorithmParameterSpec	internalGetParameterSpec(java.lang.Class paramSpec) Return the parameter spec used by this parameter instance.
protected void	internalInit(java.security.spec.AlgorithmParameterSpec paramSpec) Initialize the DSAParameters by a DSAParameterSpec
protected void	internalInit(byte[] params) Initialize the DSAParameters by encoded bytes
protected void	internalInit(byte[] params, java.lang.String decodingMethod) Initialize the DSAParameters by encoded bytes with the specified decoding method.
protected java.lang.String	internalToString()

Methods inherited from class java.lang.Object

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

Field Detail

p

protected java.math.BigInteger p

q

protected java.math.BigInteger q

g

protected java.math.BigInteger g

Constructor Detail

DSAParameters

public DSAParameters()

Method Detail

engineInit

protected void engineInit(java.security.spec.AlgorithmParameterSpec paramSpec)
                   throws java.security.spec.InvalidParameterSpecException

Initialize the DSAParameters by a DSAParameterSpec

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Parameters:

paramSpec - the DSA algorithm parameter spec for this instance.

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.security.spec.InvalidParameterSpecException

internalInit

protected void internalInit(java.security.spec.AlgorithmParameterSpec paramSpec)
                     throws java.security.spec.InvalidParameterSpecException

Initialize the DSAParameters by a DSAParameterSpec

Parameters:

paramSpec - the DSA algorithm parameter spec for this instance.

Throws:

java.security.spec.InvalidParameterSpecException

engineInit

protected void engineInit(byte[] params)
                   throws java.io.IOException

Initialize the DSAParameters by encoded bytes

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Parameters:

params - the encoded bytes of the parameters.

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.io.IOException

internalInit

protected void internalInit(byte[] params)
                     throws java.io.IOException

Initialize the DSAParameters by encoded bytes

Parameters:

params - the encoded bytes of the parameters.

Throws:

java.io.IOException

engineInit

protected void engineInit(byte[] params,
              java.lang.String decodingMethod)
                   throws java.io.IOException

Initialize the DSAParameters by encoded bytes with the specified decoding method.

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Parameters:

params - the encoded bytes of the parameters.

decodingMethod - the decoding method to be used.

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.io.IOException

internalInit

protected void internalInit(byte[] params,
                java.lang.String decodingMethod)
                     throws java.io.IOException

Initialize the DSAParameters by encoded bytes with the specified decoding method.

Parameters:

params - the encoded bytes of the parameters.

decodingMethod - the decoding method to be used.

Throws:

java.io.IOException

engineGetParameterSpec

protected java.security.spec.AlgorithmParameterSpec engineGetParameterSpec(java.lang.Class paramSpec)
                                                                    throws java.security.spec.InvalidParameterSpecException

Return the parameter spec used by this parameter instance.

Specified by:

engineGetParameterSpec in class java.security.AlgorithmParametersSpi

Parameters:

paramSpec - the parameter spec class to be returned

Returns:

AlgorithmParameterSpec the newly generated parameterSpec

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.security.spec.InvalidParameterSpecException

internalGetParameterSpec

protected java.security.spec.AlgorithmParameterSpec internalGetParameterSpec(java.lang.Class paramSpec)
                                                                      throws java.security.spec.InvalidParameterSpecException

Return the parameter spec used by this parameter instance.

Parameters:

paramSpec - the parameter spec class to be returned

Returns:

AlgorithmParameterSpec the newly generated parameterSpec

Throws:

java.security.spec.InvalidParameterSpecException

engineGetEncoded

protected byte[] engineGetEncoded()
                           throws java.io.IOException

Returns the parameters in encoded bytes.

Specified by:

engineGetEncoded in class java.security.AlgorithmParametersSpi

Returns:

byte[] the encoded parameters

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.io.IOException

internalGetEncoded

protected byte[] internalGetEncoded()
                             throws java.io.IOException

Returns the parameters in encoded bytes.

Returns:

byte[] the encoded parameters

Throws:

java.io.IOException

engineGetEncoded

protected byte[] engineGetEncoded(java.lang.String encodingMethod)
                           throws java.io.IOException

Returns the parameters in encoded bytes with encoding method specified.

Specified by:

engineGetEncoded in class java.security.AlgorithmParametersSpi

Returns:

byte[] encoded parameters.

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.io.IOException

internalGetEncoded

protected byte[] internalGetEncoded(java.lang.String encodingMethod)
                             throws java.io.IOException

Returns the parameters in encoded bytes with encoding method specified.

Returns:

byte[] encoded parameters.

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

java.io.IOException

engineToString

protected java.lang.String engineToString()

Specified by:

engineToString in class java.security.AlgorithmParametersSpi

internalToString

protected java.lang.String internalToString()