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数字签名算法：Rainbow

Java代码

import base64.Base64;

import org.junit.BeforeClass;

import org.spongycastle.crypto.AsymmetricCipherKeyPair;

import org.spongycastle.crypto.params.AsymmetricKeyParameter;

import org.spongycastle.pqc.crypto.rainbow.*;

import java.security.SecureRandom;

public class RainbowTest {

private static AsymmetricKeyParameter privateKey = null;

private static AsymmetricKeyParameter publicKey = null;

@BeforeClass

public static void init() {


RainbowKeyPairGenerator keyPairGenerator = new RainbowKeyPairGenerator();

RainbowKeyGenerationParameters rbKGParams = new RainbowKeyGenerationParameters(new SecureRandom(), new RainbowParameters());

keyPairGenerator.initialize(rbKGParams);

AsymmetricCipherKeyPair keyPair = keyPairGenerator.genKeyPair();

privateKey =  keyPair.getPrivate();

RainbowPrivateKeyParameters privKey = (RainbowPrivateKeyParameters) privateKey;

publicKey = keyPair.getPublic();

RainbowPublicKeyParameters pubKey = (RainbowPublicKeyParameters) publicKey;

}

@org.junit.Test

public void test() {


String message = “13120983870”;

RainbowSigner rainbow = new RainbowSigner();

rainbow.init(true, privateKey);

byte[] signature = rainbow.generateSignature(message.getBytes());

System.out.println(“message=” + message + “;signature=base64:” + Base64.byteArrayToBase64(signature));

rainbow.init(false, publicKey);

boolean result = rainbow.verifySignature(message.getBytes(), signature);

System.out.println(result);

result = rainbow.verifySignature(“13120983871”.getBytes(), signature);

System.out.println(result);

}

}

运行结果代码

message=13120983870;signature=base64:SuIF/kR6Wuo6dxe/Uqi3he0ad9G/ezsAim/9OsytQUHV

true

false

Java 标准api方式：

1、java的KeyPairGenerator，PrivateKey，PublicKey接口

2、java的Provider，KeyFactory，Signature接口

生成公钥和私钥：BCRainbowPrivateKey，BCRainbowPublicKey，他们分别实现了java的PrivateKey，PublicKey接口,并且私钥ASN.1编码（规范），编码按照PKCS#8标准，公钥ASN.1编码（规范），编码按照X.509标准。见#getEncoded方法实现。