From 4ec458e0d391fd2b99661c91462ed6647a1fd3d2 Mon Sep 17 00:00:00 2001
From: Thorsten Sommer <service@sommer-engineering.com>
Date: Fri, 3 Jan 2020 20:33:10 +0100
Subject: [PATCH] Added public key method also for Span<byte>

---
 Ed25519/Extensions.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Ed25519/Extensions.cs b/Ed25519/Extensions.cs
index 7e2ff16..e6ee0f4 100644
--- a/Ed25519/Extensions.cs
+++ b/Ed25519/Extensions.cs
@@ -120,5 +120,10 @@ namespace Ed25519
             var bigA = Constants.B.ScalarMul(a);
             return bigA.EncodePoint();
         }
+
+        public static ReadOnlySpan<byte> ExtractPublicKey(this Span<byte> privateKey)
+        {
+            return new ReadOnlySpan<byte>(privateKey.ToArray()).ExtractPublicKey();
+        }
     }
 }