/*
package com.ruoyi.common.utils;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.springframework.stereotype.Component;

import java.security.*;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;

*/
/**
 * SM2非对称加密工具类 - 兼容版本
 *//*

@Component
public class SM2Util {

    static {
        Security.addProvider(new BouncyCastleProvider());
    }

    */
/**
     * 生成SM2密钥对
     *//*

    public static KeyPair generateKeyPair() {
        try {
            // 使用标准的KeyPairGenerator
            KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC", "BC");

            // 使用SM2参数
            keyPairGenerator.initialize(256); // SM2使用256位

            return keyPairGenerator.generateKeyPair();
        } catch (Exception e) {
            throw new RuntimeException("生成SM2密钥对失败", e);
        }
    }

    */
/**
     * 使用私钥对数据进行签名
     *//*

    public static String sign(byte[] data, PrivateKey privateKey) {
        try {
            Signature signature = Signature.getInstance("SM3withSM2", "BC");
            signature.initSign(privateKey);
            signature.update(data);
            byte[] signBytes = signature.sign();
            return Base64.getEncoder().encodeToString(signBytes);
        } catch (Exception e) {
            throw new RuntimeException("SM2签名失败", e);
        }
    }

    */
/**
     * 使用公钥验证签名
     *//*

    public static boolean verify(byte[] data, String signature, PublicKey publicKey) {
        try {
            Signature verifier = Signature.getInstance("SM3withSM2", "BC");
            verifier.initVerify(publicKey);
            verifier.update(data);
            byte[] signatureBytes = Base64.getDecoder().decode(signature);
            return verifier.verify(signatureBytes);
        } catch (Exception e) {
            throw new RuntimeException("SM2验签失败", e);
        }
    }

    */
/**
     * 从Base64字符串加载私钥
     *//*

    public static PrivateKey loadPrivateKey(String base64PrivateKey) {
        try {
            byte[] keyBytes = Base64.getDecoder().decode(base64PrivateKey);
            PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);
            KeyFactory keyFactory = KeyFactory.getInstance("EC", "BC");
            return keyFactory.generatePrivate(keySpec);
        } catch (Exception e) {
            System.out.println(ExceptionUtil.getRootErrorMessage(e));
            throw new RuntimeException("加载SM2私钥失败", e);
        }
    }

    */
/**
     * 从Base64字符串加载公钥
     *//*

    public static PublicKey loadPublicKey(String base64PublicKey) {
        try {
            byte[] keyBytes = Base64.getDecoder().decode(base64PublicKey);
            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
            KeyFactory keyFactory = KeyFactory.getInstance("EC", "BC");
            return keyFactory.generatePublic(keySpec);
        } catch (Exception e) {
            throw new RuntimeException("加载SM2公钥失败", e);
        }
    }

    */
/**
     * 将私钥转换为Base64字符串
     *//*

    public static String privateKeyToString(PrivateKey privateKey) {
        return Base64.getEncoder().encodeToString(privateKey.getEncoded());
    }

    */
/**
     * 将公钥转换为Base64字符串
     *//*

    public static String publicKeyToString(PublicKey publicKey) {
        return Base64.getEncoder().encodeToString(publicKey.getEncoded());
    }
}*/