diff --git a/src/KeyKeeper/PasswordStore/PassStoreFileException.cs b/src/KeyKeeper/PasswordStore/PassStoreFileException.cs
new file mode 100644
index 0000000..9f28c57
--- /dev/null
+++ b/src/KeyKeeper/PasswordStore/PassStoreFileException.cs
@@ -0,0 +1,17 @@
+using System;
+
+namespace KeyKeeper.PasswordStore;
+
+public class PassStoreFileException : Exception
+{
+    public static readonly PassStoreFileException UnexpectedEndOfFile = new("unexpected EOF");
+    public static readonly PassStoreFileException IncorrectMagicNumber = new("incorrect signature (magic number)");
+    public static readonly PassStoreFileException UnsupportedVersion = new("unsupported format version");
+    public static readonly PassStoreFileException InvalidCryptoHeader = new("invalid encryption header");
+    public string Description { get; }
+
+    public PassStoreFileException(string description)
+    {
+        Description = description;
+    }
+}