Class DSAGenParameterSpec

java.lang.Object
java.security.spec.DSAGenParameterSpec
All Implemented Interfaces:
AlgorithmParameterSpec
public final class DSAGenParameterSpec extends Object implements AlgorithmParameterSpec
This immutable class specifies the set of parameters used for generating DSA parameters as specified in FIPS 186-3 Digital Signature Standard (DSS).
Since:
1.8
External Specifications
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    DSAGenParameterSpec(int primePLen, int subprimeQLen)
    Creates a domain parameter specification for DSA parameter generation using primePLen and subprimeQLen.
    DSAGenParameterSpec(int primePLen, int subprimeQLen, int seedLen)
    Creates a domain parameter specification for DSA parameter generation using primePLen, subprimeQLen, and seedLen.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getPrimePLength()
    Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.
    int
    getSeedLength()
    Returns the desired length of the domain parameter seed in bits.
    int
    getSubprimeQLength()
    Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(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
    wait(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.

  • Constructor Details

    • DSAGenParameterSpec

      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.
      Parameters:
      primePLen - the desired length of the prime P in bits.
      subprimeQLen - the desired length of the sub-prime Q in bits.
      Throws:
      IllegalArgumentException - if primePLen or subprimeQLen is illegal per the specification of FIPS 186-3.

    • DSAGenParameterSpec

      public DSAGenParameterSpec(int primePLen, int subprimeQLen, int seedLen)
      Creates a domain parameter specification for DSA parameter generation using primePLen, subprimeQLen, and seedLen.
      Parameters:
      primePLen - the desired length of the prime P in bits.
      subprimeQLen - the desired length of the sub-prime Q in bits.
      seedLen - the desired length of the domain parameter seed in bits, shall be equal to or greater than subprimeQLen.
      Throws:
      IllegalArgumentException - if primePLenLen, subprimeQLen, or seedLen is illegal per the specification of FIPS 186-3.

  • Method Details

    • getPrimePLength

      public int getPrimePLength()
      Returns the desired length of the prime P of the to-be-generated DSA domain parameters in bits.
      Returns:
      the length of the prime P.

    • getSubprimeQLength

      public int getSubprimeQLength()
      Returns the desired length of the sub-prime Q of the to-be-generated DSA domain parameters in bits.
      Returns:
      the length of the sub-prime Q.

    • getSeedLength

      public int getSeedLength()
      Returns the desired length of the domain parameter seed in bits.
      Returns:
      the length of the domain parameter seed.