From 176743ab5faec2dd275b5efd3a2dd62c610f237a Mon Sep 17 00:00:00 2001
From: Oren Novotny <oren@novotny.org>
Date: Wed, 26 Feb 2014 10:08:50 -0500
Subject: Add BouncyCastle PCL files

---
 Crypto/src/bcpg/MPInteger.cs | 59 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Crypto/src/bcpg/MPInteger.cs

(limited to 'Crypto/src/bcpg/MPInteger.cs')

diff --git a/Crypto/src/bcpg/MPInteger.cs b/Crypto/src/bcpg/MPInteger.cs
new file mode 100644
index 000000000..441407244
--- /dev/null
+++ b/Crypto/src/bcpg/MPInteger.cs
@@ -0,0 +1,59 @@
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Bcpg
+{
+	/// <remarks>A multiple precision integer</remarks>
+    public class MPInteger
+        : BcpgObject
+    {
+        private readonly BigInteger val;
+
+        public MPInteger(
+            BcpgInputStream bcpgIn)
+        {
+			if (bcpgIn == null)
+				throw new ArgumentNullException("bcpgIn");
+
+			int length = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte();
+            byte[] bytes = new byte[(length + 7) / 8];
+
+            bcpgIn.ReadFully(bytes);
+
+            this.val = new BigInteger(1, bytes);
+        }
+
+		public MPInteger(
+            BigInteger val)
+        {
+			if (val == null)
+				throw new ArgumentNullException("val");
+			if (val.SignValue < 0)
+				throw new ArgumentException("Values must be positive", "val");
+
+			this.val = val;
+        }
+
+		public BigInteger Value
+        {
+            get { return val; }
+        }
+
+        public override void Encode(
+            BcpgOutputStream bcpgOut)
+        {
+			bcpgOut.WriteShort((short) val.BitLength);
+			bcpgOut.Write(val.ToByteArrayUnsigned());
+        }
+
+		internal static void Encode(
+			BcpgOutputStream	bcpgOut,
+			BigInteger			val)
+		{
+			bcpgOut.WriteShort((short) val.BitLength);
+			bcpgOut.Write(val.ToByteArrayUnsigned());
+		}
+    }
+}
-- 
cgit 1.5.1