【add】添加工具类RSA解密方法

jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/CommonUtils.java

@@ -1,5 +1,7 @@
 package com.jero.common.util;
 
+import cn.hutool.crypto.asymmetric.KeyType;
+import cn.hutool.crypto.asymmetric.RSA;
 import lombok.extern.slf4j.Slf4j;
 import com.jero.common.constant.CommonConstant;
 import com.jero.common.constant.DataBaseConstant;
@@ -10,14 +12,16 @@ import org.springframework.util.FileCopyUtils;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.sql.DataSource;
-import java.io.ByteArrayInputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.security.KeyFactory;
+import java.security.PrivateKey;
+import java.security.spec.PKCS8EncodedKeySpec;
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.SQLException;
 import java.util.Arrays;
+import java.util.Base64;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -219,6 +223,17 @@ public class CommonUtils {
         boolean isExists = fileNameList.stream().anyMatch(name -> fileName.substring(0,fileName.lastIndexOf('.')).contains(name)||fileName.substring(fileName.lastIndexOf('.')).equals(name));
         return isExists;
     }
-
+    /**
+     * RSA 使用私钥解密
+     * @date 2021/4/15 16:11
+     * @param str 待解密的字符串
+     * @param RSAPrivateKey 私钥
+     * @return String 解密后的字符串
+     */
+    public static String decryptBtRsaPriKey(String str,String RSAPrivateKey) throws Exception {
+        RSA rsa = new RSA(RSAPrivateKey, null);
+        byte[] decrypt = rsa.decrypt(str, KeyType.PrivateKey);
+        return new String(decrypt);
+    }
 
 }