init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Paddings/TbcPadding.cs

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+using Org.BouncyCastle.Security;
+
+namespace Org.BouncyCastle.Crypto.Paddings;
+
+public class TbcPadding : IBlockCipherPadding
+{
+	public string PaddingName => "TBC";
+
+	public virtual void Init(SecureRandom random)
+	{
+	}
+
+	public virtual int AddPadding(byte[] input, int inOff)
+	{
+		int result = input.Length - inOff;
+		byte b = ((inOff <= 0) ? ((byte)(((input[^1] & 1) == 0) ? 255u : 0u)) : ((byte)(((input[inOff - 1] & 1) == 0) ? 255u : 0u)));
+		while (inOff < input.Length)
+		{
+			input[inOff] = b;
+			inOff++;
+		}
+		return result;
+	}
+
+	public virtual int PadCount(byte[] input)
+	{
+		byte b = input[^1];
+		int num = input.Length - 1;
+		while (num > 0 && input[num - 1] == b)
+		{
+			num--;
+		}
+		return input.Length - num;
+	}
+}