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package org.spongycastle.jce.provider.test;
import java.math.BigInteger;
import java.security.AlgorithmParameters;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.Cipher;
import org.spongycastle.jce.provider.BouncyCastleProvider;
import org.spongycastle.jce.spec.ECParameterSpec;
import org.spongycastle.jce.spec.IEKeySpec;
import org.spongycastle.jce.spec.IESParameterSpec;
import org.spongycastle.math.ec.ECCurve;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTestResult;
import org.spongycastle.util.test.Test;
import org.spongycastle.util.test.TestResult;
/**
* test for ECIES - Elliptic Curve Integrated Encryption Scheme
*/
public class ECIESTest
implements Test
{
ECIESTest()
{
}
public String getName()
{
return "ECIES";
}
private boolean sameAs(
byte[] a,
byte[] b)
{
if (a.length != b.length)
{
return false;
}
for (int i = 0; i != a.length; i++)
{
if (a[i] != b[i])
{
return false;
}
}
return true;
}
public TestResult perform()
{
TestResult res;
try
{
KeyPairGenerator g = KeyPairGenerator.getInstance("ECIES", "SC");
ECCurve curve = new ECCurve.Fp(
new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b
ECParameterSpec ecSpec = new ECParameterSpec(
curve,
curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
g.initialize(ecSpec, new SecureRandom());
res = performTest(g);
if (!res.isSuccessful())
{
return res;
}
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(192, new SecureRandom());
res = performTest(g);
if (!res.isSuccessful())
{
return res;
}
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(239, new SecureRandom());
res = performTest(g);
if (!res.isSuccessful())
{
return res;
}
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(256, new SecureRandom());
res = performTest(g);
if (!res.isSuccessful())
{
return res;
}
res = performDefTest(g);
if (!res.isSuccessful())
{
return res;
}
}
catch (Exception ex)
{
return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString());
}
return new SimpleTestResult(true, this.getName() + ": Okay");
}
public TestResult performTest(
KeyPairGenerator g)
{
try
{
//
// a side
//
KeyPair aKeyPair = g.generateKeyPair();
PublicKey aPub = aKeyPair.getPublic();
PrivateKey aPriv = aKeyPair.getPrivate();
//
// b side
//
KeyPair bKeyPair = g.generateKeyPair();
PublicKey bPub = bKeyPair.getPublic();
PrivateKey bPriv = bKeyPair.getPrivate();
//
// stream test
//
Cipher c1 = Cipher.getInstance("ECIES", "SC");
Cipher c2 = Cipher.getInstance("ECIES", "SC");
IEKeySpec c1Key = new IEKeySpec(aPriv, bPub);
IEKeySpec c2Key = new IEKeySpec(bPriv, aPub);
byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
IESParameterSpec param = new IESParameterSpec(d, e, 128);
c1.init(Cipher.ENCRYPT_MODE, c1Key, param);
c2.init(Cipher.DECRYPT_MODE, c2Key, param);
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = c1.doFinal(message, 0, message.length);
byte[] out2 = c2.doFinal(out1, 0, out1.length);
if (!sameAs(out2, message))
{
return new SimpleTestResult(false, this.getName() + ": stream cipher test failed");
}
}
catch (Exception ex)
{
return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString());
}
return new SimpleTestResult(true, this.getName() + ": Okay");
}
public TestResult performDefTest(
KeyPairGenerator g)
{
try
{
//
// a side
//
KeyPair aKeyPair = g.generateKeyPair();
PublicKey aPub = aKeyPair.getPublic();
PrivateKey aPriv = aKeyPair.getPrivate();
//
// b side
//
KeyPair bKeyPair = g.generateKeyPair();
PublicKey bPub = bKeyPair.getPublic();
PrivateKey bPriv = bKeyPair.getPrivate();
//
// stream test
//
Cipher c1 = Cipher.getInstance("ECIES", "SC");
Cipher c2 = Cipher.getInstance("ECIES", "SC");
IEKeySpec c1Key = new IEKeySpec(aPriv, bPub);
IEKeySpec c2Key = new IEKeySpec(bPriv, aPub);
c1.init(Cipher.ENCRYPT_MODE, c1Key);
AlgorithmParameters param = c1.getParameters();
c2.init(Cipher.DECRYPT_MODE, c2Key, param);
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = c1.doFinal(message, 0, message.length);
byte[] out2 = c2.doFinal(out1, 0, out1.length);
if (!sameAs(out2, message))
{
return new SimpleTestResult(false, this.getName() + ": stream cipher test failed");
}
}
catch (Exception ex)
{
return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString());
}
return new SimpleTestResult(true, this.getName() + ": Okay");
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
ECIESTest test = new ECIESTest();
TestResult result = test.perform();
System.out.println(result);
}
}
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