1 files changed, 30 insertions, 0 deletions

diff --git a/src/WixToolset.Core.Burn/Bundles/BundleHashAlgorithm.cs b/src/WixToolset.Core.Burn/Bundles/BundleHashAlgorithm.cs
new file mode 100644
index 00000000..3a71ed4c
--- /dev/null
+++ b/src/WixToolset.Core.Burn/Bundles/BundleHashAlgorithm.cs
@@ -0,0 +1,30 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Core.Burn.Bundles
+{
+    using System.IO;
+    using System.Security.Cryptography;
+    using System.Text;
+
+    internal static class BundleHashAlgorithm
+    {
+        public static string Hash(FileInfo fileInfo)
+        {
+            byte[] hashBytes;
+
+            using (var managed = new SHA1Managed())
+            using (var stream = fileInfo.OpenRead())
+            {
+                hashBytes = managed.ComputeHash(stream);
+            }
+
+            var sb = new StringBuilder(hashBytes.Length * 2);
+            for (var i = 0; i < hashBytes.Length; i++)
+            {
+                sb.AppendFormat("{0:X2}", hashBytes[i]);
+            }
+
+            return sb.ToString();
+        }
+    }
+}