Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#pubctors) \| [Methods](https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#inhmethods)

# DSAGenParameterSpec

` public final class DSAGenParameterSpec `   
` extends https://developer.android.com/reference/java/lang/Object ` ` implements https://developer.android.com/reference/java/security/spec/AlgorithmParameterSpec `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | java.security.spec.DSAGenParameterSpec |

<br />

*** ** * ** ***

This immutable class specifies the set of parameters used for generating DSA parameters as specified in [FIPS 186-3 Digital Signature Standard (DSS)](http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf).
**See also:**

- `https://developer.android.com/reference/java/security/spec/AlgorithmParameterSpec`

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#DSAGenParameterSpec(int,%20int)(int primePLen, int subprimeQLen) ` Creates a domain parameter specification for DSA parameter generation using `primePLen` and `subprimeQLen`. |
| ` https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#DSAGenParameterSpec(int,%20int,%20int)(int primePLen, int subprimeQLen, int seedLen) ` Creates a domain parameter specification for DSA parameter generation using `primePLen`, `subprimeQLen`, and `seedLen`. |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#getPrimePLength()() ` Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits. |
| ` int` | ` https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#getSeedLength()() ` Returns the desired length of the domain parameter seed in bits. |
| ` int` | ` https://developer.android.com/reference/java/security/spec/DSAGenParameterSpec#getSubprimeQLength()() ` Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits. |

### Inherited methods

From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `

Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `

Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class<?>` ` https://developer.android.com/reference/java/lang/Object#getClass()() `

Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `

Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `

Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `

Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `

Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.

## Public constructors

### DSAGenParameterSpec

Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public DSAGenParameterSpec (int primePLen, 
                int subprimeQLen)
```

Creates a domain parameter specification for DSA parameter generation using `primePLen` and `subprimeQLen`. The value of `subprimeQLen` is also used as the default length of the domain parameter seed in bits.

<br />

| Parameters ||
|---|---|
| `primePLen` | `int`: the desired length of the prime P in bits. <br /> |
| `subprimeQLen` | `int`: the desired length of the sub-prime Q in bits. <br /> |

| Throws ||
|---|---|
| `https://developer.android.com/reference/java/lang/IllegalArgumentException` | if `primePLen` or `subprimeQLen` is illegal per the specification of FIPS 186-3. |

### DSAGenParameterSpec

Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public DSAGenParameterSpec (int primePLen, 
                int subprimeQLen, 
                int seedLen)
```

Creates a domain parameter specification for DSA parameter generation using `primePLen`, `subprimeQLen`, and `seedLen`.

<br />

| Parameters ||
|---|---|
| `primePLen` | `int`: the desired length of the prime P in bits. <br /> |
| `subprimeQLen` | `int`: the desired length of the sub-prime Q in bits. <br /> |
| `seedLen` | `int`: the desired length of the domain parameter seed in bits, shall be equal to or greater than `subprimeQLen`. <br /> |

| Throws ||
|---|---|
| `https://developer.android.com/reference/java/lang/IllegalArgumentException` | if `primePLenLen`, `subprimeQLen`, or `seedLen` is illegal per the specification of FIPS 186-3. |

## Public methods

### getPrimePLength

Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int getPrimePLength ()
```

Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.

<br />

| Returns ||
|---|---|
| `int` | the length of the prime P. <br /> |

### getSeedLength

Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int getSeedLength ()
```

Returns the desired length of the domain parameter seed in bits.

<br />

| Returns ||
|---|---|
| `int` | the length of the domain parameter seed. <br /> |

### getSubprimeQLength

Added in [API level 35](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int getSubprimeQLength ()
```

Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.

<br />

| Returns ||
|---|---|
| `int` | the length of the sub-prime Q. <br /> |