IT. Expert System.

All Known Implementing Classes:

DSAKeyPairGeneratorImpl

public interface DSAKeyPairGenerator

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	initialize(DSAParams params, SecureRandom random) Initializes this generator with the prime (p), subprime (q), and base (g) values from the specified parameters.
  void	initialize(int modlen, boolean genParams, SecureRandom random) Initializes this generator for the specified modulus length.

• Method Detail

  • initialize

    void initialize(DSAParams params,
                  SecureRandom random)
                    throws InvalidParameterException

    Initializes this generator with the prime (p), subprime (q), and base (g) values from the specified parameters.

    Parameters:

    params - the parameter values.

    random - the source of randomness.

    Throws:

    InvalidParameterException - if the specified parameter values are null or invalid.

  • initialize

    void initialize(int modlen,
                  boolean genParams,
                  SecureRandom random)
                    throws InvalidParameterException

    Initializes this generator for the specified modulus length. Valid values for the modulus length are the multiples of 8 between 512 and 1024.

    The parameter genParams specifies whether this method should generate new prime (p), subprime (q), and base (g) values or whether it will use the pre-calculated values for the specified modulus length. Default parameters are available for modulus lengths of 512 and 1024 bits.

    Parameters:

    modlen - the length of the modulus in bits.

    genParams - whether new values should be generated.

    random - the source of randomness.

    Throws:

    InvalidParameterException - if the specified modulus length is not valid, or if there are no pre-calculated values and genParams is false.