diff --git a/Crypto/src/bcpg/sig/RevocationReason.cs b/Crypto/src/bcpg/sig/RevocationReason.cs
new file mode 100644
index 000000000..f32c1f64a
--- /dev/null
+++ b/Crypto/src/bcpg/sig/RevocationReason.cs
@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Bcpg
+{
+ /// <summary>
+ /// Represents revocation reason OpenPGP signature sub packet.
+ /// </summary>
+ public class RevocationReason
+ : SignatureSubpacket
+ {
+ public RevocationReason(bool isCritical, byte[] data)
+ : base(SignatureSubpacketTag.RevocationReason, isCritical, data)
+ {
+ }
+
+ public RevocationReason(
+ bool isCritical,
+ RevocationReasonTag reason,
+ string description)
+ : base(SignatureSubpacketTag.RevocationReason, isCritical, CreateData(reason, description))
+ {
+ }
+
+ private static byte[] CreateData(
+ RevocationReasonTag reason,
+ string description)
+ {
+ byte[] descriptionBytes = Strings.ToUtf8ByteArray(description);
+ byte[] data = new byte[1 + descriptionBytes.Length];
+
+ data[0] = (byte)reason;
+ Array.Copy(descriptionBytes, 0, data, 1, descriptionBytes.Length);
+
+ return data;
+ }
+
+ public virtual RevocationReasonTag GetRevocationReason()
+ {
+ return (RevocationReasonTag)GetData()[0];
+ }
+
+ public virtual string GetRevocationDescription()
+ {
+ byte[] data = GetData();
+ if (data.Length == 1)
+ {
+ return string.Empty;
+ }
+
+ byte[] description = new byte[data.Length - 1];
+ Array.Copy(data, 1, description, 0, description.Length);
+
+ return Strings.FromUtf8ByteArray(description);
+ }
+ }
+}
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