init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Bcpg/Crc24.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace Org.BouncyCastle.Bcpg;
+
+public class Crc24
+{
+	private const int Crc24Init = 11994318;
+
+	private const int Crc24Poly = 25578747;
+
+	private int crc = 11994318;
+
+	public int Value => crc;
+
+	public void Update(int b)
+	{
+		crc ^= b << 16;
+		for (int i = 0; i < 8; i++)
+		{
+			crc <<= 1;
+			if ((crc & 0x1000000) != 0)
+			{
+				crc ^= 25578747;
+			}
+		}
+	}
+
+	[Obsolete("Use 'Value' property instead")]
+	public int GetValue()
+	{
+		return crc;
+	}
+
+	public void Reset()
+	{
+		crc = 11994318;
+	}
+}