1 files changed, 72 insertions, 0 deletions
diff --git a/crypto/src/crypto/parameters/DsaValidationParameters.cs b/crypto/src/crypto/parameters/DsaValidationParameters.cs
new file mode 100644
index 000000000..c2f84c785
--- /dev/null
+++ b/crypto/src/crypto/parameters/DsaValidationParameters.cs
@@ -0,0 +1,72 @@
+using System;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Parameters
+{
+    public class DsaValidationParameters
+    {
+        private readonly byte[] seed;
+        private readonly int counter;
+        private readonly int usageIndex;
+
+        public DsaValidationParameters(byte[] seed, int counter)
+            : this(seed, counter, -1)
+        {
+        }
+
+        public DsaValidationParameters(
+            byte[]	seed,
+            int		counter,
+            int     usageIndex)
+        {
+            if (seed == null)
+                throw new ArgumentNullException("seed");
+
+            this.seed = (byte[]) seed.Clone();
+            this.counter = counter;
+            this.usageIndex = usageIndex;
+        }
+
+        public virtual byte[] GetSeed()
+        {
+            return (byte[]) seed.Clone();
+        }
+
+        public virtual int Counter
+        {
+            get { return counter; }
+        }
+
+        public virtual int UsageIndex
+        {
+            get { return usageIndex; }
+        }
+
+        public override bool Equals(
+            object obj)
+        {
+            if (obj == this)
+                return true;
+
+            DsaValidationParameters other = obj as DsaValidationParameters;
+
+            if (other == null)
+                return false;
+
+            return Equals(other);
+        }
+
+        protected virtual bool Equals(
+            DsaValidationParameters other)
+        {
+            return counter == other.counter
+                && Arrays.AreEqual(seed, other.seed);
+        }
+
+        public override int GetHashCode()
+        {
+            return counter.GetHashCode() ^ Arrays.GetHashCode(seed);
+        }
+    }
+}