fix: 内存溢出

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

@@ -21,13 +21,10 @@ public class RSAUtils {
 
     private static Cipher cipher = null;
 
-    public static Cipher getInstance() throws NoSuchPaddingException, NoSuchAlgorithmException {
+    public static synchronized void getInstance(Provider provider) throws NoSuchPaddingException, NoSuchAlgorithmException {
         if (cipher == null) {
-                Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
-                Security.addProvider(provider);
                 cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
         }
-        return cipher;
     }
 
 
@@ -84,7 +81,9 @@ public class RSAUtils {
 
     private static byte[] encrypt(byte[] byteArray){
         try {
-            Cipher cipher = getInstance();
+            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
+            Security.addProvider(provider);
+            getInstance(provider);
             PublicKey publicKey = keyPair.getPublic();
             cipher.init(Cipher.ENCRYPT_MODE, publicKey);
             return cipher.doFinal(byteArray);
@@ -97,7 +96,9 @@ public class RSAUtils {
         try {
             //Cipher: 提供加密和解密功能的实例
             //transformation: "algorithm/mode/padding"
-            Cipher cipher = getInstance();
+            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
+            Security.addProvider(provider);
+            getInstance(provider);
             PrivateKey privateKey = keyPair.getPrivate();
             //初始化
             cipher.init(Cipher.DECRYPT_MODE, privateKey);
@@ -110,7 +111,9 @@ public class RSAUtils {
 
     private static byte[] encrypt(byte[] byteArray, String publicKey){
         try {
-            Cipher cipher = getInstance();
+            Provider provider = new org.bouncycastle.jce.provider.BouncyCastleProvider();
+            Security.addProvider(provider);
+            getInstance(provider);
             cipher.init(Cipher.ENCRYPT_MODE, getPublicKey(publicKey));
             return cipher.doFinal(byteArray);
         } catch (Exception e) {