1 files changed, 86 insertions, 0 deletions
diff --git a/Crypto/src/bcpg/UserAttributeSubpacket.cs b/Crypto/src/bcpg/UserAttributeSubpacket.cs
new file mode 100644
index 000000000..bd49d2150
--- /dev/null
+++ b/Crypto/src/bcpg/UserAttributeSubpacket.cs
@@ -0,0 +1,86 @@
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Bcpg
+{
+ /**
+ * Basic type for a user attribute sub-packet.
+ */
+ public class UserAttributeSubpacket
+ {
+ private readonly UserAttributeSubpacketTag type;
+ private readonly byte[] data;
+
+ internal UserAttributeSubpacket(
+ UserAttributeSubpacketTag type,
+ byte[] data)
+ {
+ this.type = type;
+ this.data = data;
+ }
+
+ public UserAttributeSubpacketTag SubpacketType
+ {
+ get { return type; }
+ }
+
+ /**
+ * return the generic data making up the packet.
+ */
+ public byte[] GetData()
+ {
+ return data;
+ }
+
+ public void Encode(
+ Stream os)
+ {
+ int bodyLen = data.Length + 1;
+
+ if (bodyLen < 192)
+ {
+ os.WriteByte((byte)bodyLen);
+ }
+ else if (bodyLen <= 8383)
+ {
+ bodyLen -= 192;
+
+ os.WriteByte((byte)(((bodyLen >> 8) & 0xff) + 192));
+ os.WriteByte((byte)bodyLen);
+ }
+ else
+ {
+ os.WriteByte(0xff);
+ os.WriteByte((byte)(bodyLen >> 24));
+ os.WriteByte((byte)(bodyLen >> 16));
+ os.WriteByte((byte)(bodyLen >> 8));
+ os.WriteByte((byte)bodyLen);
+ }
+
+ os.WriteByte((byte) type);
+ os.Write(data, 0, data.Length);
+ }
+
+ public override bool Equals(
+ object obj)
+ {
+ if (obj == this)
+ return true;
+
+ UserAttributeSubpacket other = obj as UserAttributeSubpacket;
+
+ if (other == null)
+ return false;
+
+ return type == other.type
+ && Arrays.AreEqual(data, other.data);
+ }
+
+ public override int GetHashCode()
+ {
+ return type.GetHashCode() ^ Arrays.GetHashCode(data);
+ }
+ }
+}
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