1 files changed, 13 insertions, 0 deletions
diff --git a/crypto/src/util/Arrays.cs b/crypto/src/util/Arrays.cs
index df9b4e7ee..a9a574dbf 100644
--- a/crypto/src/util/Arrays.cs
+++ b/crypto/src/util/Arrays.cs
@@ -8,6 +8,19 @@ namespace Org.BouncyCastle.Utilities
     /// <summary> General array utilities.</summary>
     public abstract class Arrays
     {
+        public static readonly byte[] EmptyBytes = new byte[0];
+        public static readonly int[] EmptyInts = new int[0];
+
+        public static bool AreAllZeroes(byte[] buf, int off, int len)
+        {
+            uint bits = 0;
+            for (int i = 0; i < len; ++i)
+            {
+                bits |= buf[off + i];
+            }
+            return bits == 0;
+        }
+
         public static bool AreEqual(
             bool[]  a,
             bool[]  b)