1 files changed, 56 insertions, 0 deletions
diff --git a/Crypto/src/bcpg/sig/KeyExpirationTime.cs b/Crypto/src/bcpg/sig/KeyExpirationTime.cs
new file mode 100644
index 000000000..23b4cac29
--- /dev/null
+++ b/Crypto/src/bcpg/sig/KeyExpirationTime.cs
@@ -0,0 +1,56 @@
+using System;
+
+
+
+namespace Org.BouncyCastle.Bcpg.Sig
+{
+ /**
+ * packet giving time after creation at which the key expires.
+ */
+ public class KeyExpirationTime
+ : SignatureSubpacket
+ {
+ protected static byte[] TimeToBytes(
+ long t)
+ {
+ byte[] data = new byte[4];
+
+ data[0] = (byte)(t >> 24);
+ data[1] = (byte)(t >> 16);
+ data[2] = (byte)(t >> 8);
+ data[3] = (byte)t;
+
+ return data;
+ }
+
+ public KeyExpirationTime(
+ bool critical,
+ byte[] data)
+ : base(SignatureSubpacketTag.KeyExpireTime, critical, data)
+ {
+ }
+
+ public KeyExpirationTime(
+ bool critical,
+ long seconds)
+ : base(SignatureSubpacketTag.KeyExpireTime, critical, TimeToBytes(seconds))
+ {
+ }
+
+ /**
+ * Return the number of seconds after creation time a key is valid for.
+ *
+ * @return second count for key validity.
+ */
+ public long Time
+ {
+ get
+ {
+ long time = ((long)(data[0] & 0xff) << 24) | ((long)(data[1] & 0xff) << 16)
+ | ((long)(data[2] & 0xff) << 8) | ((long)data[3] & 0xff);
+
+ return time;
+ }
+ }
+ }
+}
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