Fix RSA fais in Linux/OS X

Fix RSA fais in Linux/OS X , Change the default RSAEncryptionPadding from OaepSHA512 to Pkcs1

Author: catcherwong

src/NETCore.Encrypt/EncryptProvider.cs

@@ -361,7 +361,7 @@ public static string RSAEncrypt(string publicKey, string srcString)
             using (RSA rsa = RSA.Create())
             {
                 rsa.FromJsonString(publicKey);
-                byte[] encryptBytes = rsa.Encrypt(Encoding.UTF8.GetBytes(srcString), RSAEncryptionPadding.OaepSHA512);
+                byte[] encryptBytes = rsa.Encrypt(Encoding.UTF8.GetBytes(srcString), RSAEncryptionPadding.Pkcs1);
                 return encryptBytes.ToHexString();
             }
         }
@@ -380,7 +380,7 @@ public static string RSADecrypt(string privateKey, string srcString)
             {
                 rsa.FromJsonString(privateKey);
                 byte[] srcBytes = srcString.ToBytes();
-                byte[] decryptBytes = rsa.Decrypt(srcBytes, RSAEncryptionPadding.OaepSHA512);
+                byte[] decryptBytes = rsa.Decrypt(srcBytes, RSAEncryptionPadding.Pkcs1);
                 return Encoding.UTF8.GetString(decryptBytes);
             }
         }