Add new classes in Math.Field and some other EC-related stuff from Java

1 files changed, 46 insertions, 0 deletions

diff --git a/crypto/src/math/field/GF2Polynomial.cs b/crypto/src/math/field/GF2Polynomial.cs
new file mode 100644
index 000000000..c062d508a
--- /dev/null
+++ b/crypto/src/math/field/GF2Polynomial.cs
@@ -0,0 +1,46 @@
+using System;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Math.Field
+{
+    internal class GF2Polynomial
+        : IPolynomial
+    {
+        protected readonly int[] exponents;
+
+        internal GF2Polynomial(int[] exponents)
+        {
+            this.exponents = Arrays.Clone(exponents);
+        }
+
+        public virtual int Degree
+        {
+            get { return exponents[exponents.Length - 1]; }
+        }
+
+        public virtual int[] GetExponentsPresent()
+        {
+            return Arrays.Clone(exponents);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (this == obj)
+            {
+                return true;
+            }
+            GF2Polynomial other = obj as GF2Polynomial;
+            if (null == other)
+            {
+                return false;
+            }
+            return Arrays.AreEqual(exponents, other.exponents);
+        }
+
+        public override int GetHashCode()
+        {
+            return Arrays.GetHashCode(exponents);
+        }
+    }
+}