init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Tls/SignerInputBuffer.cs

@@ -0,0 +1,32 @@
+using System.IO;
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Crypto.Tls;
+
+internal class SignerInputBuffer : MemoryStream
+{
+	private class SigStream : BaseOutputStream
+	{
+		private readonly ISigner s;
+
+		internal SigStream(ISigner s)
+		{
+			this.s = s;
+		}
+
+		public override void WriteByte(byte b)
+		{
+			s.Update(b);
+		}
+
+		public override void Write(byte[] buf, int off, int len)
+		{
+			s.BlockUpdate(buf, off, len);
+		}
+	}
+
+	internal void UpdateSigner(ISigner s)
+	{
+		Streams.WriteBufTo(this, new SigStream(s));
+	}
+}