帮我写一段处理sm2加密的代码

以下是处理SM2加密的Python代码示例：

from gmssl import sm2, func

# 生成SM2密钥对
private_key = sm2.GenPrivateKey()
public_key = sm2.GetPublicKey(private_key)

# 加密明文
plaintext = b'Hello, world!'
ciphertext = sm2.CryptMsg(public_key, plaintext)

# 解密密文
decrypted_text = sm2.DecryptMsg(private_key, ciphertext)

# 验证解密结果是否正确
assert plaintext == decrypted_text

需要注意的是，这段代码使用了gmssl库，因此需要先安装该库。可以使用以下命令进行安装：

pip install gmssl

相关问题

给我写一段SM2 加解密的java代码

好的，下面是一段简单的 SM2 加解密的 Java 代码：

import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.engines.SM2Engine;
import org.bouncycastle.crypto.params.*;
import org.bouncycastle.crypto.signers.SM2Signer;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.encoders.Hex;

import java.security.*;
import java.security.spec.ECGenParameterSpec;

public class SM2Utils {
    private static final int SM3_DIGEST_LENGTH = 32;

    private static final String PROVIDER_NAME = "BC";

    private static final SecureRandom RANDOM = new SecureRandom();

    private static final X9ECParameters SM2_PARAMS = SECNamedCurves.getByName("sm2p256v1");

    private static final int KEY_SIZE = 256;

    private static final int SM3_KEY_LENGTH = 16;

    private static final byte[] SM2_DEFAULT_ID = "1234567812345678".getBytes();

    static {
        if (Security.getProvider(PROVIDER_NAME) == null) {
            Security.addProvider(new BouncyCastleProvider());
        }
    }

    /**
     * 生成 SM2 密钥对
     *
     * @return 返回 SM2 密钥对
     * @throws NoSuchAlgorithmException
     * @throws NoSuchProviderException
     * @throws InvalidAlgorithmParameterException
     */
    public static KeyPair generateKeyPair() throws NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", PROVIDER_NAME);

        ECGenParameterSpec ecSpec = new ECGenParameterSpec("sm2p256v1");

        kpg.initialize(ecSpec, RANDOM);

        return kpg.generateKeyPair();
    }

    /**
     * SM2 加密
     *
     * @param publicKey 公钥
     * @param data      待加密的数据
     * @return 返回加密后的字节数组
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeyException
     * @throws InvalidCipherTextException
     */
    public static byte[] encrypt(PublicKey publicKey, byte[] data) throws NoSuchAlgorithmException, InvalidKeyException, InvalidCipherTextException {

        byte[] userId = SM2_DEFAULT_ID;

        CipherParameters cp = new SM2KeyEncryptionParameters((SM2PublicKey) publicKey, userId);

        SM2Engine engine = new SM2Engine();

        engine.init(true, cp);

        return engine.processBlock(data, 0, data.length);
    }

    /**
     * SM2 解密
     *
     * @param privateKey 私钥
     * @param cipherText 加密后的字节数组
     * @return 返回解密后的字节数组
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeyException
     * @throws InvalidCipherTextException
     */
    public static byte[] decrypt(PrivateKey privateKey, byte[] cipherText) throws NoSuchAlgorithmException, InvalidKeyException, InvalidCipherTextException {

        byte[] userId = SM2_DEFAULT_ID;

        CipherParameters cp = new SM2KeyEncryptionParameters((SM2PrivateKey) privateKey, userId);

        SM2Engine engine = new SM2Engine();

        engine.init(false, cp);

        return engine.processBlock(cipherText, 0, cipherText.length);
    }

    /**
     * SM3 消息摘要
     *
     * @param data 待摘要的数据
     * @return 返回摘要结果
     * @throws NoSuchAlgorithmException
     */
    public static byte[] sm3(byte[] data) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SM3", PROVIDER_NAME);

        return md.digest(data);
    }

    /**
     * SM2 签名
     *
     * @param privateKey 私钥
     * @param data       待签名的数据
     * @return 返回签名后的字节数组
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeyException
     */
    public static byte[] sign(PrivateKey privateKey, byte[] data) throws NoSuchAlgorithmException, InvalidKeyException {
        byte[] hash = sm3(data);

        SM2Signer signer = new SM2Signer();

        signer.init(true, new ECPrivateKeyParameters(((ECPrivateKey) privateKey).getS(), SM2_PARAMS));

        signer.update(hash, 0, hash.length);

        return signer.generateSignature();
    }

    /**
     * SM2 验签
     *
     * @param publicKey    公钥
     * @param data         待验签的数据
     * @param signature    签名
     * @return 返回验签结果
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeyException
     */
    public static boolean verify(PublicKey publicKey, byte[] data, byte[] signature) throws NoSuchAlgorithmException, InvalidKeyException {
        byte[] hash = sm3(data);

        SM2Signer signer = new SM2Signer();

        signer.init(false, new ECPublicKeyParameters(((ECPublicKey) publicKey).getQ(), SM2_PARAMS));

        signer.update(hash, 0, hash.length);

        return signer.verifySignature(signature);
    }

    public static void main(String[] args) {
        try {
            Security.addProvider(new BouncyCastleProvider());

            KeyPair keyPair = generateKeyPair();

            byte[] data = "Hello, world!".getBytes();

            System.out.println("Encrypt data: " + Hex.toHexString(data));

            byte[] cipherText = encrypt(keyPair.getPublic(), data);

            System.out.println("Cipher text: " + Hex.toHexString(cipherText));

            byte[] plainText = decrypt(keyPair.getPrivate(), cipherText);

            System.out.println("Decrypted data: " + new String(plainText));
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

希望能够帮到您！

生成一段Javascript能调用的SM2加密解密算法

在Javascript中使用SM2算法进行加解密需要使用第三方库来实现。以下是使用sm-crypto库进行SM2加解密的示例代码：

// 导入sm-crypto库
const sm = require('sm-crypto').sm2;

// 生成公私钥对
const keypair = sm.generateKeyPairHex();

// 加密数据
const data = 'hello world';
const cipherText = sm.encrypt(data, keypair.publicKey);

// 解密数据
const plainText = sm.decrypt(cipherText, keypair.privateKey);

// 输出结果
console.log('原始数据：', data);
console.log('加密后数据：', cipherText);
console.log('解密后数据：', plainText);

需要注意的是，以上示例代码中使用的是Node.js环境下的代码，如果要在浏览器环境中使用，需要使用相应的浏览器版本的sm-crypto库，并且需要注意浏览器的跨域安全策略。