Took substring of public key and created buffer in XOR

Signed-off-by: S V <vats02581@gmail.com>

Author: svats0001

r2dbc-mysql/src/main/java/io/asyncer/r2dbc/mysql/authentication/AuthUtils.java

@@ -115,12 +115,14 @@ private static byte[] allBytesXor(byte[] left, byte[] right) {
 
     static byte[] rotatingXor(byte[] password, byte[] seedBytes) {
         int seedLength = seedBytes.length;
+        int passwordLength = password.length;
+        byte[] buffer = new byte[passwordLength];
 
-        for (int i = 0; i < password.length; i++) {
-            password[i] ^= seedBytes[i % seedLength];
+        for (int i = 0; i < passwordLength; i++) {
+            buffer[i] = (byte)(password[i] ^ seedBytes[i % seedLength]);
         }
 
-        return password;
+        return buffer;
     }
 
     private AuthUtils() { }

r2dbc-mysql/src/main/java/io/asyncer/r2dbc/mysql/authentication/MySqlAuthProvider.java

@@ -158,6 +158,9 @@ static byte[] rsaEncryption(byte[] bytesToEncrypt, String serverRsaPublicKeyFile
 
             String key = new String(Files.readAllBytes(Paths.get(serverRsaPublicKeyFile)), Charset.defaultCharset());
 
+            int startIndex = key.indexOf("-----BEGIN PUBLIC KEY-----");
+            int endIndex = key.indexOf("-----END PUBLIC KEY-----") + 23;
+            key = key.substring(startIndex, endIndex+1);
             String publicKeyPEM = key
               .replace("-----BEGIN PUBLIC KEY-----", "")
               .replaceAll(System.lineSeparator(), "")