修改sm4加密

pom.xml

@@ -45,6 +45,14 @@
             <version>5.7.22</version>
         </dependency>
 
+
+        <dependency>
+            <groupId>org.bouncycastle</groupId>
+            <artifactId>bcprov-jdk15on</artifactId>
+            <version>1.70</version>
+        </dependency>
+
+
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
@@ -76,6 +84,7 @@
             <artifactId>druid</artifactId>
             <version>1.1.22</version>
         </dependency>
+
     </dependencies>
 
     <build>

src/main/java/com/citygis/jiami/JiaMiController.java

@@ -1,8 +1,9 @@
 package com.citygis.jiami;
 
-import cn.hutool.crypto.symmetric.SM4;
 import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
 import com.citygis.pojo.ColumnInfo;
+import com.citygis.utils.Sm4Util;
+import org.bouncycastle.jcajce.provider.symmetric.SM4;
 import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -30,11 +31,14 @@ public class JiaMiController {
     public String handleEncryption(@RequestParam("id") String id, @RequestParam("tableName") String tableName, @RequestParam("column") String column) throws Exception {
 
         List<ColumnInfo> columnList = jiaMiService.handleEncryption(id, tableName, column);
-        SM4 sm4 = new SM42();
+//        // 获取秘钥
+//        String sm4Key = Sm4Util.getSm4Key();
+//        System.out.println("sm4秘钥:" + sm4Key);
+
         int row = 0;
         if (!CollectionUtils.isEmpty(columnList) && columnList.size() > 0) {
             for (ColumnInfo info : columnList) {
-                String encryString = sm4.encryptHex(info.getValue());
+                String encryString = Sm4Util.encrypt(info.getValue(), "892575e584e5b5d740159a3fd1982c56");
                 row = row + jiaMiService.updateEncryption(tableName, column, info.getId(), encryString);
             }
         }

src/main/java/com/citygis/utils/Sm4Util.java

@@ -0,0 +1,50 @@
+package com.citygis.utils;
+
+import cn.hutool.core.util.HexUtil;
+import cn.hutool.crypto.SmUtil;
+import cn.hutool.crypto.symmetric.SM4;
+
+import javax.crypto.SecretKey;
+
+/**
+ * @Author: zyl
+ * @CreateTime: 2024-12-13
+ * @Description:
+ * @Version: 1.0
+ */
+public class Sm4Util {
+
+    /**
+     * 获取sm4秘钥
+     *
+     * @return sm4秘钥
+     */
+    public static String getSm4Key() {
+        SM4 sm4 = SmUtil.sm4();
+        SecretKey secretKey = sm4.getSecretKey();
+        byte[] encoded = secretKey.getEncoded();
+        return HexUtil.encodeHexStr(encoded);
+    }
+
+    /**
+     * sm4加密
+     *
+     * @param content 文本
+     * @param sm4Key  sm4秘钥
+     * @return 加密后的结果
+     */
+    public static String encrypt(String content, String sm4Key) {
+        SM4 sm4 = new SM4(HexUtil.decodeHex(sm4Key));
+        return sm4.encryptHex(content);
+    }
+
+    /**
+     * @param content
+     * @param sm4Key
+     * @return 解密后的结果
+     */
+    public static String decrypt(String content, String sm4Key) {
+        SM4 sm4 = new SM4(HexUtil.decodeHex(sm4Key));
+        return sm4.decryptStr(content);
+    }
+}