1 files changed, 23 insertions, 0 deletions
diff --git a/crypto/src/crypto/ISignatureFactory.cs b/crypto/src/crypto/ISignatureFactory.cs
new file mode 100644
index 000000000..cbca7d1a7
--- /dev/null
+++ b/crypto/src/crypto/ISignatureFactory.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace Org.BouncyCastle.Crypto
+{
+    /// <summary>
+    /// Base interface for operators that serve as stream-based signature calculators.
+    /// </summary>
+    public interface ISignatureFactory
+	{
+        /// <summary>The algorithm details object for this calculator.</summary>
+        Object AlgorithmDetails { get ; }
+
+        /// <summary>
+        /// Create a stream calculator for this signature calculator. The stream
+        /// calculator is used for the actual operation of entering the data to be signed
+        /// and producing the signature block.
+        /// </summary>
+        /// <returns>A calculator producing an IBlockResult with a signature in it.</returns>
+        IStreamCalculator CreateCalculator();
+    }
+}
+
+