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0N/A
0N/Apackage javax.crypto.spec;
0N/A
0N/Aimport java.math.BigInteger;
0N/Aimport java.security.spec.AlgorithmParameterSpec;
0N/A
0N/A/**
0N/A * This class specifies the set of parameters used for generating
0N/A * Diffie-Hellman (system) parameters for use in Diffie-Hellman key
0N/A * agreement. This is typically done by a central
0N/A * authority.
0N/A *
0N/A * <p> The central authority, after computing the parameters, must send this
0N/A * information to the parties looking to agree on a secret key.
0N/A *
0N/A * @author Jan Luehe
0N/A *
0N/A * @see DHParameterSpec
0N/A * @since 1.4
0N/A */
0N/Apublic class DHGenParameterSpec implements AlgorithmParameterSpec {
0N/A
0N/A // The size in bits of the prime modulus
0N/A private int primeSize;
0N/A
0N/A // The size in bits of the random exponent (private value)
0N/A private int exponentSize;
0N/A
0N/A /**
0N/A * Constructs a parameter set for the generation of Diffie-Hellman
0N/A * (system) parameters. The constructed parameter set can be used to
0N/A * initialize an
0N/A * {@link java.security.AlgorithmParameterGenerator AlgorithmParameterGenerator}
0N/A * object for the generation of Diffie-Hellman parameters.
0N/A *
0N/A * @param primeSize the size (in bits) of the prime modulus.
0N/A * @param exponentSize the size (in bits) of the random exponent.
0N/A */
0N/A public DHGenParameterSpec(int primeSize, int exponentSize) {
0N/A this.primeSize = primeSize;
0N/A this.exponentSize = exponentSize;
0N/A }
0N/A
0N/A /**
0N/A * Returns the size in bits of the prime modulus.
0N/A *
0N/A * @return the size in bits of the prime modulus
0N/A */
0N/A public int getPrimeSize() {
0N/A return this.primeSize;
0N/A }
0N/A
0N/A /**
0N/A * Returns the size in bits of the random exponent (private value).
0N/A *
0N/A * @return the size in bits of the random exponent (private value)
0N/A */
0N/A public int getExponentSize() {
0N/A return this.exponentSize;
0N/A }
0N/A}