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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
package org.bouncycastle.pqc.crypto.cmce;
import java.security.SecureRandom;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator;
import org.bouncycastle.crypto.KeyGenerationParameters;
public class CMCEKeyPairGenerator
implements AsymmetricCipherKeyPairGenerator
{
private CMCEKeyGenerationParameters cmceParams;
// private int m;
//
// private int n;
//
// private int t;
private SecureRandom random;
private void initialize(
KeyGenerationParameters param)
{
this.cmceParams = (CMCEKeyGenerationParameters) param;
this.random = param.getRandom();
// this.m = this.cmceParams.getParameters().getM();
// this.n = this.cmceParams.getParameters().getN();
// this.t = this.cmceParams.getParameters().getT();
}
private AsymmetricCipherKeyPair genKeyPair()
{
CMCEEngine engine = cmceParams.getParameters().getEngine();
byte[] sk = new byte[engine.getPrivateKeySize()];
byte[] pk = new byte[engine.getPublicKeySize()];
engine.kem_keypair(pk, sk, random);
CMCEPublicKeyParameters pubKey = new CMCEPublicKeyParameters(cmceParams.getParameters(), pk);
CMCEPrivateKeyParameters privKey = new CMCEPrivateKeyParameters(cmceParams.getParameters(), sk);
return new AsymmetricCipherKeyPair(pubKey, privKey);
}
public void init(KeyGenerationParameters param)
{
this.initialize(param);
}
public AsymmetricCipherKeyPair generateKeyPair()
{
return genKeyPair();
}
}