添加缺少文件

ruoyi-common/src/main/java/com/ruoyi/common/utils/wechat/AESUtils.java

@@ -0,0 +1,76 @@
+package com.ruoyi.common.utils.wechat;
+
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import javax.xml.transform.Result;
+import java.security.*;
+
+/**
+ * @Author Songzhongjin
+ * @Date 2020/7/15 11:46
+ * @Version 1.0
+ */
+public class AESUtils {
+
+    public static boolean initialized = false;
+
+    /**
+     * AES解密
+     *
+     * @param content 密文
+     * @return
+     * @throws InvalidAlgorithmParameterException
+     * @throws NoSuchProviderException
+     */
+    public byte[] decrypt(byte[] content, byte[] keyByte, byte[] ivByte) throws InvalidAlgorithmParameterException {
+        initialize();
+        try {
+            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
+            Key sKeySpec = new SecretKeySpec(keyByte, "AES");
+            cipher.init(Cipher.DECRYPT_MODE, sKeySpec, generateIV(ivByte));// 初始化
+            byte[] result = cipher.doFinal(content);
+            return result;
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        } catch (NoSuchPaddingException e) {
+            e.printStackTrace();
+        } catch (InvalidKeyException e) {
+            e.printStackTrace();
+        } catch (IllegalBlockSizeException e) {
+            e.printStackTrace();
+        } catch (BadPaddingException e) {
+            e.printStackTrace();
+        } catch (NoSuchProviderException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        } catch (Exception e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static void initialize() {
+        if (initialized) {
+            return;
+        }
+        Security.addProvider(new BouncyCastleProvider());
+        initialized = true;
+    }
+
+    //生成iv
+    public static AlgorithmParameters generateIV(byte[] iv) throws Exception {
+        AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
+        params.init(new IvParameterSpec(iv));
+        return params;
+    }
+
+
+}
+