JRE8 + jce_policy-8, Bouncy Castle 1.50環境下調試通過

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.Security;

import javax.crypto.Cipher;

import javax.xml.bind.annotation.adapters.HexBinaryAdapter;

import org.bouncycastle.jce.interfaces.ECPrivateKey;

import org.bouncycastle.jce.interfaces.ECPublicKey;

import org.bouncycastle.jce.provider.BouncyCastleProvider;

import org.bouncycastle.math.ec.ECCurve;

import org.bouncycastle.math.ec.ECPoint;

public class TestECC {

public static void main(String[] args) throws

Exception {

byte[] plainText = "Hello

World!".getBytes();

byte[] cipherText = null;

Security.addProvider(new

BouncyCastleProvider());

//生成公鑰和私鑰

KeyPairGenerator

keyPairGenerator = KeyPairGenerator.getInstance("ECIES",

"BC");

KeyPair keyPair =

keyPairGenerator.generateKeyPair();?ECPublicKey ecPublicKey =

(ECPublicKey) keyPair.getPublic();

ECPrivateKey ecPrivateKey =

(ECPrivateKey) keyPair.getPrivate();

//打印密鑰信息

ECCurve ecCurve =

ecPublicKey.getParameters().getCurve();

System.out.println("橢圓曲線參數a = "

+ ecCurve.getA().toBigInteger());

System.out.println("橢圓曲線參數b = "

+ ecCurve.getB().toBigInteger());

System.out.println("橢圓曲線參數q = "

+ ((ECCurve.Fp) ecCurve).getQ());

ECPoint basePoint =

ecPublicKey.getParameters().getG();

System.out.println("基點橫坐標?"

+

basePoint.getAffineXCoord().toBigInteger());

System.out.println("基點縱坐標?"

+

basePoint.getAffineYCoord().toBigInteger());

System.out.println("公鑰橫坐標?"

+

ecPublicKey.getQ().getAffineXCoord().toBigInteger());

System.out.println("公鑰縱坐標?"

+

ecPublicKey.getQ().getAffineYCoord().toBigInteger());

System.out.println("私鑰?" + ecPrivateKey.getD());

Cipher cipher =

Cipher.getInstance("ECIESwithDESede/NONE/PKCS7Padding",

"BC");

// 加密

cipher.init(Cipher.ENCRYPT_MODE,

ecPublicKey);

cipherText =

cipher.doFinal(plainText);

System.out.println("密文: " + new

HexBinaryAdapter().marshal(cipherText));

// 解密

cipher.init(Cipher.DECRYPT_MODE,

ecPrivateKey);

plainText =

cipher.doFinal(cipherText);

// 打印解密后的明文

System.out.println("解密后的明文: " +

new String(plainText));

}

}

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