DSAParameterGenerator

java.lang.Object
- java.security.AlgorithmParameterGeneratorSpi
- - com.ibm.crypto.fips.provider.DSAParameterGenerator

All Implemented Interfaces:: NistDSAParam

public final class DSAParameterGenerator
extends java.security.AlgorithmParameterGeneratorSpi
implements NistDSAParam

This class generates parameters for the DSA signature.

Constructor Summary

Constructors
Constructor and Description

DSAParameterGenerator()
Constructs a new instance of this class.

Constructors
Constructor and Description
`DSAParameterGenerator()` Constructs a new instance of this class.

Method Summary

Methods
Modifier and Type	Method and Description
`protected java.security.AlgorithmParameters`	`engineGenerateParameters()` Answers the newly generated parameters.
`protected void`	`engineInit(java.security.spec.AlgorithmParameterSpec genParamSpec, java.security.SecureRandom random)` Initializes the receiver with the specified parameters and source of randomness.
`protected void`	`engineInit(int size, java.security.SecureRandom random)` Initializes the receiver with the specified parameter size and source of randomness.
`protected java.math.BigInteger[]`	`generate_g_h(java.math.BigInteger p, java.math.BigInteger q)` Generate and return g,h one of the DSA parameters
`protected ProbablePrimeResultFFC`	`generateParameters_SP186_2(int L, java.security.MessageDigest sha, byte[] paramSeed)` Actual generation of DSA parameters
`protected ProbablePrimeResultFFC`	`generateParameters_SP186_4(int L, int N, java.security.MessageDigest md, byte[] paramSeed)` Generate parameters for NIST SP186-4 specification
`protected java.security.AlgorithmParameters`	`internalGenerateParameters()` Answers the newly generated parameters.
`protected void`	`internalInit(java.security.spec.AlgorithmParameterSpec genParamSpec, java.security.SecureRandom random)` Initializes the receiver with the specified parameters and source of randomness.
`protected void`	`internalInit(int size, java.security.SecureRandom random)` Initializes the receiver with the specified parameter size and source of randomness.
`protected int`	`validate_g(java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g)` THis method will be used only Certificate lab requires that we validate g.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DSAParameterGenerator
```
public DSAParameterGenerator()
```
    Constructs a new instance of this class.
- Method Detail
  - engineGenerateParameters
```
protected java.security.AlgorithmParameters engineGenerateParameters()
```
    Answers the newly generated parameters.
    
    Specified by:
    
    engineGenerateParameters in class java.security.AlgorithmParameterGeneratorSpi
    
    Returns:
    AlgorithmParameters the newly generated parameters.
    
    Throws:
    
    FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.
  - internalGenerateParameters
```
protected java.security.AlgorithmParameters internalGenerateParameters()
```
    Answers the newly generated parameters.
    
    Returns:
    AlgorithmParameters the newly generated parameters.
  - engineInit
```
protected void engineInit(java.security.spec.AlgorithmParameterSpec genParamSpec,
              java.security.SecureRandom random)
                   throws java.security.InvalidAlgorithmParameterException
```
    Initializes the receiver with the specified parameters and source of randomness.
    
    Specified by:
    
    engineInit in class java.security.AlgorithmParameterGeneratorSpi
    
    Parameters:
    genParamSpec - AlgorithmParameterSpec parameters for this algorithm
    random - SecureRandom New secure random to use
    
    Throws:
    
    FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.
    
    java.security.InvalidAlgorithmParameterException
  - internalInit
```
protected void internalInit(java.security.spec.AlgorithmParameterSpec genParamSpec,
                java.security.SecureRandom random)
                     throws java.security.InvalidAlgorithmParameterException
```
    Initializes the receiver with the specified parameters and source of randomness.
    
    Parameters:
    genParamSpec - AlgorithmParameterSpec parameters for this algorithm
    random - SecureRandom New secure random to use
    
    Throws:
    
    java.security.InvalidAlgorithmParameterException
  - engineInit
```
protected void engineInit(int size,
              java.security.SecureRandom random)
```
    Initializes the receiver with the specified parameter size and source of randomness.
    
    Specified by:
    
    engineInit in class java.security.AlgorithmParameterGeneratorSpi
    
    Parameters:
    size - int Size of the parameters
    random - SecureRandom New secure random to use
    
    Throws:
    
    FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.
  - internalInit
```
protected void internalInit(int size,
                java.security.SecureRandom random)
```
    Initializes the receiver with the specified parameter size and source of randomness.
    
    Parameters:
    size - int Size of the parameters
    random - SecureRandom New secure random to use
  - generate_g_h
```
protected java.math.BigInteger[] generate_g_h(java.math.BigInteger p,
                                  java.math.BigInteger q)
```
    Generate and return g,h one of the DSA parameters
    
    Returns:
    BigInteger DSA parameter g and h
  - generateParameters_SP186_4
```
protected ProbablePrimeResultFFC generateParameters_SP186_4(int L,
                                                int N,
                                                java.security.MessageDigest md,
                                                byte[] paramSeed)
                                                     throws java.lang.Exception
```
    Generate parameters for NIST SP186-4 specification
    
    Parameters:
    L -
    N -
    md -
    paramSeed -
    
    Throws:
    
    java.lang.Exception
  - generateParameters_SP186_2
```
protected ProbablePrimeResultFFC generateParameters_SP186_2(int L,
                                                java.security.MessageDigest sha,
                                                byte[] paramSeed)
                                                     throws java.lang.Exception
```
    Actual generation of DSA parameters
    
    Throws:
    
    java.lang.Exception
  - validate_g
```
protected int validate_g(java.math.BigInteger p,
             java.math.BigInteger q,
             java.math.BigInteger g)
```
    THis method will be used only Certificate lab requires that we validate g. There is no complete validation for this class. The best we can do is PARTIALVALID.
    
    Parameters:
    p -
    q -
    g -
    
    Returns:

Methods inherited from class java.lang.Object

DSAParameterGenerator

engineGenerateParameters

internalGenerateParameters

engineInit

internalInit

engineInit

internalInit

generate_g_h

generateParameters_SP186_4

generateParameters_SP186_2

validate_g