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package org.spongycastle.pqc.jcajce.provider.test;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.Cipher;
import org.spongycastle.pqc.math.linearalgebra.ByteUtils;
public abstract class AsymmetricBlockCipherTest
extends FlexiTest
{
protected Cipher cipher;
protected KeyPair keyPair;
protected PublicKey pubKey;
protected PrivateKey privKey;
protected KeyPairGenerator kpg;
private byte[] mBytes;
private byte[] cBytes;
private byte[] dBytes;
protected final void performEnDecryptionTest(int numPassesKPG,
int numPassesEncDec, AlgorithmParameterSpec params)
{
try
{
for (int j = 0; j < numPassesKPG; j++)
{
keyPair = kpg.genKeyPair();
pubKey = keyPair.getPublic();
privKey = keyPair.getPrivate();
for (int k = 1; k <= numPassesEncDec; k++)
{
// initialize for encryption
cipher.init(Cipher.ENCRYPT_MODE, pubKey, params, sr);
// generate random message
final int plainTextSize = cipher.getBlockSize();
int mLength = rand.nextInt(plainTextSize) + 1;
mBytes = new byte[mLength];
rand.nextBytes(mBytes);
// encrypt
cBytes = cipher.doFinal(mBytes);
// initialize for decryption
cipher.init(Cipher.DECRYPT_MODE, privKey, params);
// decrypt
dBytes = cipher.doFinal(cBytes);
// compare
assertEquals("Encryption and Decryption test failed:\n"
+ " actual decrypted text: "
+ ByteUtils.toHexString(dBytes)
+ "\n expected plain text: "
+ ByteUtils.toHexString(mBytes), mBytes, dBytes);
}
}
}
catch (Exception e)
{
e.printStackTrace();
fail(e);
}
}
}
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