From 5e1ef1cb46ed4967423d16805b9ac780c4ba9599 Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@bouncycastle.org>
Date: Thu, 27 Feb 2014 13:01:12 +0700
Subject: Equality/hashcode should ignore "excess" words

---
 crypto/src/util/Arrays.cs | 54 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'crypto/src/util/Arrays.cs')

diff --git a/crypto/src/util/Arrays.cs b/crypto/src/util/Arrays.cs
index cc2025ef3..a21dd00b1 100644
--- a/crypto/src/util/Arrays.cs
+++ b/crypto/src/util/Arrays.cs
@@ -220,6 +220,25 @@ namespace Org.BouncyCastle.Utilities
             return hc;
         }
 
+        public static int GetHashCode(byte[] data, int off, int len)
+        {
+            if (data == null)
+            {
+                return 0;
+            }
+
+            int i = len;
+            int hc = i + 1;
+
+            while (--i >= 0)
+            {
+                hc *= 257;
+                hc ^= data[off + i];
+            }
+
+            return hc;
+        }
+
         public static int GetHashCode(int[] data)
         {
             if (data == null)
@@ -237,6 +256,23 @@ namespace Org.BouncyCastle.Utilities
             return hc;
         }
 
+        public static int GetHashCode(int[] data, int off, int len)
+        {
+            if (data == null)
+                return 0;
+
+            int i = len;
+            int hc = i + 1;
+
+            while (--i >= 0)
+            {
+                hc *= 257;
+                hc ^= data[off + i];
+            }
+
+            return hc;
+        }
+
         [CLSCompliantAttribute(false)]
         public static int GetHashCode(uint[] data)
         {
@@ -255,6 +291,24 @@ namespace Org.BouncyCastle.Utilities
             return hc;
         }
 
+        [CLSCompliantAttribute(false)]
+        public static int GetHashCode(uint[] data, int off, int len)
+        {
+            if (data == null)
+                return 0;
+
+            int i = len;
+            int hc = i + 1;
+
+            while (--i >= 0)
+            {
+                hc *= 257;
+                hc ^= (int)data[off + i];
+            }
+
+            return hc;
+        }
+
         public static byte[] Clone(
             byte[] data)
         {
-- 
cgit 1.4.1