Class DiffieHellmanKeyPairGeneratorHybrid


  • public final class DiffieHellmanKeyPairGeneratorHybrid
    extends java.security.KeyPairGenerator
    This class is a facade for the generator of Diffie-Hellman key pairs.

    This key pair generator may be initialized in two different ways:

    • By providing the size in bits of the prime modulus. This will be used to create a prime modulus and base generator, which will then be used to create the Diffie-Hellman key pair. The default size of the prime modulus is 1024 bits.
    • By providing a prime modulus and base generator.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected static com.ibm.misc.Debug debug
      The debug object, null if not instantiated at JVM startup.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.security.KeyPair generateKeyPair()
      Generates an RSA key pair.
      protected void getGenerator()
      Creates an instance of the KeyPairGenerator.
      void initialize​(int strength, java.security.SecureRandom random)
      Initializes this KeyPairGenerator for given modulus size and secure random source.
      void initialize​(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)
      Initializes this KeyPairGenerator for given parameters and secure random source.
      • Methods inherited from class java.security.KeyPairGenerator

        genKeyPair, getAlgorithm, getInstance, getInstance, getInstance, getProvider, initialize, initialize
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • debug

        protected static com.ibm.misc.Debug debug
        The debug object, null if not instantiated at JVM startup.
    • Constructor Detail

      • DiffieHellmanKeyPairGeneratorHybrid

        public DiffieHellmanKeyPairGeneratorHybrid()
        Creates a new instance of the DiffieHellmanKeyPairGeneratorHybrid class.
    • Method Detail

      • initialize

        public void initialize​(java.security.spec.AlgorithmParameterSpec params,
                               java.security.SecureRandom random)
                        throws java.security.InvalidAlgorithmParameterException,
                               java.security.InvalidParameterException
        Initializes this KeyPairGenerator for given parameters and secure random source.
        Overrides:
        initialize in class java.security.KeyPairGenerator
        Parameters:
        params - the RSAKeyParameterSpec for this object.
        random - the SecureRandom object for generating random numbers.
        Throws:
        java.security.InvalidAlgorithmParameterException - thrown when parameter set is not recognized.
        java.security.InvalidParameterException
      • initialize

        public void initialize​(int strength,
                               java.security.SecureRandom random)
                        throws java.security.InvalidParameterException
        Initializes this KeyPairGenerator for given modulus size and secure random source. The private key will be stored in the CLEAR not the hardware or the PKDS, the private key label will be randomly generated and the key will be used for signing purposes.
        Overrides:
        initialize in class java.security.KeyPairGenerator
        Parameters:
        strength - the length of the key to be generated.
        random - the SecureRandom object for generating a random number.
        Throws:
        java.security.InvalidParameterException - thrown when a parameter is not recognized.
      • generateKeyPair

        public java.security.KeyPair generateKeyPair()
        Generates an RSA key pair.
        Overrides:
        generateKeyPair in class java.security.KeyPairGenerator
        Returns:
        a KeyPair contains a pair of generated RSA keys
        Throws:
        java.lang.IllegalArgumentException - in the key label formal is not valid
      • getGenerator

        protected void getGenerator()
        Creates an instance of the KeyPairGenerator.
        Throws:
        java.lang.RuntimeException - if this method fails to create and to initialize the message digest.