From 6b487f58c0098f8c53cfc3a9e00a1ae528651ea1 Mon Sep 17 00:00:00 2001
From: walon <walon@code-philosophy.com>
Date: Wed, 14 May 2025 14:59:49 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96float=E5=92=8Cdouble=E5=8A=A0?=
 =?UTF-8?q?=E5=AF=86?=
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---
 Runtime/EncryptorBase.cs | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/Runtime/EncryptorBase.cs b/Runtime/EncryptorBase.cs
index c6ea6af..76264e2 100644
--- a/Runtime/EncryptorBase.cs
+++ b/Runtime/EncryptorBase.cs
@@ -40,6 +40,28 @@ namespace Obfuz
             return ((long)decryptedHigh << 32) | (uint)decryptedLow;
         }
 
+        private int? _floatSalt;
+
+        private int GetFloatSalt()
+        {
+            if (_floatSalt == null)
+            {
+                _floatSalt = Encrypt(0xABCD, 0x12345678, 0);
+            }
+            return _floatSalt.Value;
+        }
+
+        private long? _doubleSalt;
+
+        private long GetDoubleSalt()
+        {
+            if (_doubleSalt == null)
+            {
+                _doubleSalt = Encrypt(0xAABBCCDDL, 0x12345678, 0);
+            }
+            return _doubleSalt.Value;
+        }
+
         public virtual float Encrypt(float value, int opts, int salt)
         {
             if (float.IsNaN(value) || float.IsInfinity(value))
@@ -47,7 +69,7 @@ namespace Obfuz
                 return value;
             }
             ref int intValue = ref UnsafeUtility.As<float, int>(ref value);
-            int xorValue = ((1 << 23) - 1) & (opts ^ salt);
+            int xorValue = ((1 << 23) - 1) & (opts ^ salt ^ GetFloatSalt());
             intValue ^= xorValue;
             return value;
         }
@@ -59,7 +81,7 @@ namespace Obfuz
                 return value;
             }
             ref int intValue = ref UnsafeUtility.As<float, int>(ref value);
-            int xorValue = ((1 << 23) - 1) & (opts ^ salt);
+            int xorValue = ((1 << 23) - 1) & (opts ^ salt ^ GetFloatSalt());
             intValue ^= xorValue;
             return value;
         }
@@ -71,7 +93,7 @@ namespace Obfuz
                 return value;
             }
             ref long longValue = ref UnsafeUtility.As<double, long>(ref value);
-            long xorValue = ((1L << 52) - 1) & (((long)opts << 32) | (uint)salt);
+            long xorValue = ((1L << 52) - 1) & ((((long)opts << 32) | (uint)salt) ^ GetDoubleSalt());
             longValue ^= xorValue;
             return value;
         }
@@ -83,7 +105,7 @@ namespace Obfuz
                 return value;
             }
             ref long longValue = ref UnsafeUtility.As<double, long>(ref value);
-            long xorValue = ((1L << 52) - 1) & (((long)opts << 32) | (uint)salt);
+            long xorValue = ((1L << 52) - 1) & ((((long)opts << 32) | (uint)salt) ^ GetDoubleSalt());
             longValue ^= xorValue;
             return value;
         }