fix: 内存溢出

src/main/java/com/lqkj/link/util/RSAUtils.java

@@ -1,7 +1,8 @@
 package com.lqkj.link.util;
 
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+
 import javax.crypto.Cipher;
-import javax.crypto.NoSuchPaddingException;
 import java.nio.charset.StandardCharsets;
 import java.security.*;
 import java.security.spec.InvalidKeySpecException;
@@ -17,15 +18,9 @@ import java.util.Base64;
  **/
 public class RSAUtils {
     //KeyPair is a simple holder for a key pair.
+    private static BouncyCastleProvider provider = new BouncyCastleProvider();
     private static final KeyPair keyPair = initKey();
 
-    private static Cipher cipher = null;
-
-    public static synchronized void getInstance(Provider provider) throws NoSuchPaddingException, NoSuchAlgorithmException {
-        if (cipher == null) {
-                cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
-        }
-    }
 
 
     /**
@@ -36,7 +31,6 @@ public class RSAUtils {
     private static KeyPair initKey() {
         try {
             //添加provider
-            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
             Security.addProvider(provider);
             //产生用于安全加密的随机数
             SecureRandom random = new SecureRandom();
@@ -81,9 +75,8 @@ public class RSAUtils {
 
     private static byte[] encrypt(byte[] byteArray){
         try {
-            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
             Security.addProvider(provider);
-            getInstance(provider);
+            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
             PublicKey publicKey = keyPair.getPublic();
             cipher.init(Cipher.ENCRYPT_MODE, publicKey);
             return cipher.doFinal(byteArray);
@@ -94,11 +87,10 @@ public class RSAUtils {
 
     private static byte[] decrypt(byte[] byteArray) {
         try {
+            Security.addProvider(provider);
             //Cipher: 提供加密和解密功能的实例
             //transformation: "algorithm/mode/padding"
-            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
-            Security.addProvider(provider);
-            getInstance(provider);
+            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
             PrivateKey privateKey = keyPair.getPrivate();
             //初始化
             cipher.init(Cipher.DECRYPT_MODE, privateKey);
@@ -111,9 +103,8 @@ public class RSAUtils {
 
     private static byte[] encrypt(byte[] byteArray, String publicKey){
         try {
-            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
             Security.addProvider(provider);
-            getInstance(provider);
+            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
             cipher.init(Cipher.ENCRYPT_MODE, getPublicKey(publicKey));
             return cipher.doFinal(byteArray);
         } catch (Exception e) {