1 files changed, 54 insertions, 0 deletions
diff --git a/src/Publishing/GpgSigner.cs b/src/Publishing/GpgSigner.cs
new file mode 100644
index 0000000..3ed216a
--- /dev/null
+++ b/src/Publishing/GpgSigner.cs
@@ -0,0 +1,54 @@
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+
+using VNLib.Tools.Build.Executor.Constants;
+
+namespace VNLib.Tools.Build.Executor.Publishing
+{
+    public sealed class GpgSigner(bool enabled, string? defaultKey)
+    {
+        public bool IsEnabled { get; } = enabled;
+
+        public async Task SignFileAsync(FileInfo file)
+        {
+            if (!IsEnabled)
+            {
+                return;
+            }
+
+            List<string> args = [
+                "--detach-sign"
+            ];
+
+            if (!string.IsNullOrWhiteSpace(defaultKey))
+            {
+                //Set the preferred key
+                args.Add("--default-key");
+                args.Add(defaultKey);
+            }
+
+            //Add input file
+            args.Add(file.FullName);
+
+            //Delete an original file 
+            string sigFile = $"{file.FullName}.sig";
+            if (File.Exists(sigFile))
+            {
+                File.Delete(sigFile);
+            }
+
+            int result = await Utils.RunProcessAsync("gpg", null, args.ToArray());
+
+            switch (result)
+            {
+                case 2:
+                case 0:
+                    break;
+                default:
+                    throw new BuildFailedException($"Failed to sign file {file.FullName}");
+            }
+        }
+    }
+}
+\ No newline at end of file