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Looly 2023-06-09 23:37:37 +08:00
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hutool-crypto/src/test/java/cn/hutool/crypto/asymmetric/PaillierTest.java
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package cn.hutool.crypto.asymmetric;
import cn.hutool.core.lang.Console;
import cn.hutool.crypto.asymmetric.paillier.Paillier;
import cn.hutool.crypto.asymmetric.paillier.PaillierKeyPair;
import cn.hutool.crypto.asymmetric.paillier.PaillierPrivateKey;
import cn.hutool.crypto.asymmetric.paillier.PaillierpublicKey;
import org.junit.Assert;
import org.junit.Test;
import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
/**
* @author Revers.
**/
public class PaillierTest {
@Test
public void test() throws NoSuchAlgorithmException {
//生成 公钥和私钥
final PaillierKeyPair paillierKeyPair = Paillier.generateKey();
final PaillierpublicKey publicKey = paillierKeyPair.getPublicKey();
final PaillierPrivateKey privateKey = paillierKeyPair.getPrivateKey();
//创建两个大整数m1,m2:
final BigInteger m1 = new BigInteger("10");
final BigInteger m2 = new BigInteger("40");
//公钥加密私钥解
final byte[] em1 = Paillier.encrypt(m1, publicKey);
Assert.assertEquals("10", Paillier.decrypt(em1, privateKey));
//同态特性
final byte[] em2 = Paillier.encrypt(m2, publicKey);
Assert.assertNotNull(new BigInteger(em1).toString(16));
Assert.assertNotNull(new BigInteger(em2).toString(16));
//Console.log("m1加密em1 :"+ new BigInteger(em1).toString(16));
//Console.log("m2加密em2 :"+ new BigInteger(em2).toString(16));
final byte[] add = Paillier.add(em1, em2, publicKey);
Assert.assertNotNull(new BigInteger(add).toString(16));
Assert.assertNotNull(Paillier.decrypt(add,privateKey));
//Console.log("m1+m2 密文的和：" + new BigInteger(add).toString(16));
//Console.log("m1+m2 密文的和的解：" + Paillier.decrypt(add,privateKey));
final byte[] mul = Paillier.multiply(em1, m2, publicKey);
Assert.assertNotNull(new BigInteger(mul).toString(16));
Assert.assertNotNull(Paillier.decrypt(mul,privateKey));
//Console.log("m1*m2 密文的积：" + new BigInteger(mul).toString(16));
//Console.log("m1*m2 密文的积的解：" + Paillier.decrypt(mul,privateKey));
//加解密字符串
final String s = "123456dfsgsdg!@#%!@@#$!#%是豆腐干山豆根v啊微软";
final byte[] encrypt = Paillier.encryptString(s, publicKey);
Assert.assertNotNull(new BigInteger(encrypt).toString(16));
//Console.log("字符串密文： "+ new BigInteger(encrypt).toString(16) );
final String decrypt = Paillier.decryptString(encrypt, privateKey);
Assert.assertEquals(s, decrypt);
}
}