用户加解密
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package com.bonus.sgzb.system.config;
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/**
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* @Author ma_sh
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* @create 2024/5/24 19:08
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*/
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import javax.crypto.Cipher;
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import java.security.KeyFactory;
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import java.security.PrivateKey;
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import java.security.PublicKey;
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import java.security.spec.PKCS8EncodedKeySpec;
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import java.security.spec.X509EncodedKeySpec;
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import java.util.Base64;
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public class RsaUtil {
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//签名算法名称
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private static final String RSA_KEY_ALGORITHM = "RSA";
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//RSA密钥长度,默认密钥长度是1024,密钥长度必须是64的倍数，在512到65536位之间,不管是RSA还是RSA2长度推荐使用2048
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private static final int KEY_SIZE = 2048;
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/**
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* 公钥加密(用于数据加密)
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*
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* @param data 加密前的字符串
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* @param publicKeyStr base64编码后的公钥
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* @return base64编码后的字符串
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* @throws Exception
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*/
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public static String encryptByPublicKey(String data, String publicKeyStr) throws Exception {
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//Java原生base64解码
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byte[] pubKey = Base64.getDecoder().decode(publicKeyStr);
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//创建X509编码密钥规范
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X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(pubKey);
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//返回转换指定算法的KeyFactory对象
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KeyFactory keyFactory = KeyFactory.getInstance(RSA_KEY_ALGORITHM);
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//根据X509编码密钥规范产生公钥对象
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PublicKey publicKey = keyFactory.generatePublic(x509KeySpec);
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//根据转换的名称获取密码对象Cipher（转换的名称：算法/工作模式/填充模式）
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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//用公钥初始化此Cipher对象（加密模式）
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cipher.init(Cipher.ENCRYPT_MODE, publicKey);
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//对数据加密
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byte[] encrypt = cipher.doFinal(data.getBytes());
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//返回base64编码后的字符串
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return Base64.getEncoder().encodeToString(encrypt);
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}
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/**
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* 私钥解密(用于数据解密)
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*
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* @param data 解密前的字符串
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* @param privateKeyStr 私钥
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* @return 解密后的字符串
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* @throws Exception
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*/
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public static String decryptByPrivateKey(String data, String privateKeyStr) throws Exception {
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//Java原生base64解码
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byte[] priKey = Base64.getDecoder().decode(privateKeyStr);
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//创建PKCS8编码密钥规范
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PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(priKey);
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//返回转换指定算法的KeyFactory对象
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KeyFactory keyFactory = KeyFactory.getInstance(RSA_KEY_ALGORITHM);
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//根据PKCS8编码密钥规范产生私钥对象
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PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec);
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//根据转换的名称获取密码对象Cipher（转换的名称：算法/工作模式/填充模式）
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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//用私钥初始化此Cipher对象（解密模式）
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cipher.init(Cipher.DECRYPT_MODE, privateKey);
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//对数据解密
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byte[] decrypt = cipher.doFinal(Base64.getDecoder().decode(data));
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//返回字符串
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return new String(decrypt);
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}
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/**
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* 私钥加密(用于数据签名)
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*
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* @param data 加密前的字符串
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* @param privateKeyStr base64编码后的私钥
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* @return base64编码后后的字符串
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* @throws Exception
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*/
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public static String encryptByPrivateKey(String data, String privateKeyStr) throws Exception {
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//Java原生base64解码
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byte[] priKey = Base64.getDecoder().decode(privateKeyStr);
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//创建PKCS8编码密钥规范
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PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(priKey);
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//返回转换指定算法的KeyFactory对象
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KeyFactory keyFactory = KeyFactory.getInstance(RSA_KEY_ALGORITHM);
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//根据PKCS8编码密钥规范产生私钥对象
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PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec);
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//根据转换的名称获取密码对象Cipher（转换的名称：算法/工作模式/填充模式）
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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//用私钥初始化此Cipher对象（加密模式）
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cipher.init(Cipher.ENCRYPT_MODE, privateKey);
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//对数据加密
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byte[] encrypt = cipher.doFinal(data.getBytes());
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//返回base64编码后的字符串
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return Base64.getEncoder().encodeToString(encrypt);
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}
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/**
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* 公钥解密(用于数据验签)
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*
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* @param data 解密前的字符串
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* @param publicKeyStr base64编码后的公钥
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* @return 解密后的字符串
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* @throws Exception
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*/
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public static String decryptByPublicKey(String data, String publicKeyStr) throws Exception {
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//Java原生base64解码
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byte[] pubKey = Base64.getDecoder().decode(publicKeyStr);
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//创建X509编码密钥规范
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X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(pubKey);
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//返回转换指定算法的KeyFactory对象
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KeyFactory keyFactory = KeyFactory.getInstance(RSA_KEY_ALGORITHM);
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//根据X509编码密钥规范产生公钥对象
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PublicKey publicKey = keyFactory.generatePublic(x509KeySpec);
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//根据转换的名称获取密码对象Cipher（转换的名称：算法/工作模式/填充模式）
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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//用公钥初始化此Cipher对象（解密模式）
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cipher.init(Cipher.DECRYPT_MODE, publicKey);
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//对数据解密
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byte[] decrypt = cipher.doFinal(Base64.getDecoder().decode(data));
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//返回字符串
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return new String(decrypt);
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}
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}
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@ -8,6 +8,7 @@ import javax.crypto.spec.SecretKeySpec;
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import javax.servlet.http.HttpServletResponse;
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import com.bonus.sgzb.common.core.utils.StringUtils;
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import com.bonus.sgzb.system.config.RsaUtil;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.validation.annotation.Validated;
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import org.springframework.web.bind.annotation.DeleteMapping;
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@ -38,6 +39,7 @@ import com.bonus.sgzb.system.service.ISysConfigService;
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@RequestMapping("/config")
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public class SysConfigController extends BaseController
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{
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private final String publicKey = "MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKoR8mX0rGKLqzcWmOzbfj64K8ZIgOdHnzkXSOVOZbFu/TJhZ7rFAN+eaGkl3C4buccQd/EjEsj9ir7ijT7h96MCAwEAAQ==";
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private final String CONFIG_KEY = "sys.user.initPassword";
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@Autowired
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private ISysConfigService configService;
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@ -52,15 +54,7 @@ public class SysConfigController extends BaseController
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List<SysConfig> list = configService.selectConfigList(config);
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for (SysConfig sysConfig : list) {
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if (CONFIG_KEY.equals(sysConfig.getConfigKey()) && StringUtils.isNotBlank(sysConfig.getConfigValue())) {
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// 定义密钥
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String key = "CCNWrpassWordKey";
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SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
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// 使用ECB模式简化示例，实际推荐CBC
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Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, keySpec);
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String data = sysConfig.getConfigValue();
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byte[] encryptedBytes = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
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String configValue = Base64.getEncoder().encodeToString(encryptedBytes);
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String configValue = RsaUtil.encryptByPublicKey(sysConfig.getConfigValue(), publicKey);
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sysConfig.setConfigValue(configValue);
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}
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}
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@ -94,14 +88,7 @@ public class SysConfigController extends BaseController
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{
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String configByKey = configService.selectConfigByKey(configKey);
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if (CONFIG_KEY.equals(configKey) && StringUtils.isNotBlank(configByKey)) {
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// 定义密钥
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String key = "CCNWrpassWordKey";
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SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
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// 使用ECB模式简化示例，实际推荐CBC
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Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, keySpec);
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byte[] encryptedBytes = cipher.doFinal(configByKey.getBytes(StandardCharsets.UTF_8));
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String configValue = Base64.getEncoder().encodeToString(encryptedBytes);
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String configValue = RsaUtil.encryptByPublicKey(configByKey, publicKey);
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return AjaxResult.success(configValue);
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}
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return AjaxResult.success(configByKey);
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