1 files changed, 115 insertions, 0 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/util/Arrays.java b/bcprov/src/main/java/org/bouncycastle/util/Arrays.java
index 3f7677c..64ce17c 100644
--- a/bcprov/src/main/java/org/bouncycastle/util/Arrays.java
+++ b/bcprov/src/main/java/org/bouncycastle/util/Arrays.java
@@ -323,6 +323,25 @@ public final class Arrays
 
         return hc;
     }
+    
+    public static int hashCode(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 hashCode(char[] data)
     {
@@ -374,6 +393,25 @@ public final class Arrays
         return hc;
     }
 
+    public static int hashCode(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;
+    }
+
     public static int hashCode(short[][][] shorts)
     {
         int hc = 0;
@@ -752,6 +790,20 @@ public final class Arrays
         return result;
     }
 
+    public static short[] append(short[] a, short b)
+    {
+        if (a == null)
+        {
+            return new short[]{ b };
+        }
+
+        int length = a.length;
+        short[] result = new short[length + 1];
+        System.arraycopy(a, 0, result, 0, length);
+        result[length] = b;
+        return result;
+    }
+
     public static int[] append(int[] a, int b)
     {
         if (a == null)
@@ -840,6 +892,23 @@ public final class Arrays
         }
     }
 
+    public static int[] concatenate(int[] a, int[] b)
+    {
+        if (a == null)
+        {
+            return clone(b);
+        }
+        if (b == null)
+        {
+            return clone(a);
+        }
+
+        int[] c = new int[a.length + b.length];
+        System.arraycopy(a, 0, c, 0, a.length);
+        System.arraycopy(b, 0, c, a.length, b.length);
+        return c;
+    }
+
     public static byte[] prepend(byte[] a, byte b)
     {
         if (a == null)
@@ -853,4 +922,50 @@ public final class Arrays
         result[0] = b;
         return result;
     }
+
+    public static short[] prepend(short[] a, short b)
+    {
+        if (a == null)
+        {
+            return new short[]{ b };
+        }
+
+        int length = a.length;
+        short[] result = new short[length + 1];
+        System.arraycopy(a, 0, result, 1, length);
+        result[0] = b;
+        return result;
+    }
+
+    public static int[] prepend(int[] a, int b)
+    {
+        if (a == null)
+        {
+            return new int[]{ b };
+        }
+
+        int length = a.length;
+        int[] result = new int[length + 1];
+        System.arraycopy(a, 0, result, 1, length);
+        result[0] = b;
+        return result;
+    }
+
+    public static byte[] reverse(byte[] a)
+    {
+        if (a == null)
+        {
+            return null;
+        }
+
+        int p1 = 0, p2 = a.length;
+        byte[] result = new byte[p2];
+        
+        while (--p2 >= 0)
+        {
+            result[p2] = a[p1++];
+        }
+
+        return result;
+    }
 }