1 files changed, 0 insertions, 63 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/generators/CramerShoupKeyPairGenerator.java b/core/src/main/java/org/bouncycastle/crypto/generators/CramerShoupKeyPairGenerator.java
deleted file mode 100644
index 8fcdf858..00000000
--- a/core/src/main/java/org/bouncycastle/crypto/generators/CramerShoupKeyPairGenerator.java
+++ /dev/null
@@ -1,63 +0,0 @@
-package org.bouncycastle.crypto.generators;
-
-import java.math.BigInteger;
-import java.security.SecureRandom;
-
-import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
-import org.bouncycastle.crypto.AsymmetricCipherKeyPairGenerator;
-import org.bouncycastle.crypto.KeyGenerationParameters;
-import org.bouncycastle.crypto.params.CramerShoupKeyGenerationParameters;
-import org.bouncycastle.crypto.params.CramerShoupParameters;
-import org.bouncycastle.crypto.params.CramerShoupPrivateKeyParameters;
-import org.bouncycastle.crypto.params.CramerShoupPublicKeyParameters;
-import org.bouncycastle.util.BigIntegers;
-
-/**
- * a Cramer Shoup key pair generator
- * 
- */
-public class CramerShoupKeyPairGenerator implements AsymmetricCipherKeyPairGenerator {
-	
-	private static final BigInteger ONE = BigInteger.valueOf(1);
-
-	private CramerShoupKeyGenerationParameters param;
-
-	public void init(KeyGenerationParameters param) {
-		this.param = (CramerShoupKeyGenerationParameters) param;
-	}
-
-	public AsymmetricCipherKeyPair generateKeyPair() {
-		CramerShoupParameters csParams = param.getParameters();
-
-		CramerShoupPrivateKeyParameters sk = generatePrivateKey(param.getRandom(), csParams);
-		CramerShoupPublicKeyParameters pk = calculatePublicKey(csParams, sk);
-		sk.setPk(pk);
-
-		return new AsymmetricCipherKeyPair(pk, sk);
-	}
-
-	private BigInteger generateRandomElement(BigInteger p, SecureRandom random) {
-		return BigIntegers.createRandomInRange(ONE, p.subtract(ONE), random);
-	}
-	
-	private CramerShoupPrivateKeyParameters generatePrivateKey(SecureRandom random, CramerShoupParameters csParams){
-		BigInteger p = csParams.getP();
-		CramerShoupPrivateKeyParameters key = new CramerShoupPrivateKeyParameters(csParams,
-				generateRandomElement(p, random), generateRandomElement(p, random),
-				generateRandomElement(p, random), generateRandomElement(p, random),
-				generateRandomElement(p, random));
-		return key;
-	}
-
-	private CramerShoupPublicKeyParameters calculatePublicKey(CramerShoupParameters csParams, CramerShoupPrivateKeyParameters sk) {
-		BigInteger g1 = csParams.getG1();
-		BigInteger g2 = csParams.getG2();
-		BigInteger p = csParams.getP();
-		
-		BigInteger c = g1.modPow(sk.getX1(), p).multiply(g2.modPow(sk.getX2(), p));
-		BigInteger d = g1.modPow(sk.getY1(), p).multiply(g2.modPow(sk.getY2(), p));
-		BigInteger h = g1.modPow(sk.getZ(), p);
-		
-		return new CramerShoupPublicKeyParameters(csParams, c, d, h);
-	}
-}