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Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/crypto/BufferedStreamCipher.cs

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+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto
+{
+	public class BufferedStreamCipher
+		: BufferedCipherBase
+	{
+		private readonly IStreamCipher m_cipher;
+
+		public BufferedStreamCipher(IStreamCipher cipher)
+		{
+			if (cipher == null)
+				throw new ArgumentNullException("cipher");
+
+			this.m_cipher = cipher;
+		}
+
+		public override string AlgorithmName
+		{
+			get { return m_cipher.AlgorithmName; }
+		}
+
+        public override void Init(bool forEncryption, ICipherParameters parameters)
+        {
+            if (parameters is ParametersWithRandom withRandom)
+			{
+				parameters = withRandom.Parameters;
+			}
+
+			m_cipher.Init(forEncryption, parameters);
+		}
+
+		public override int GetBlockSize()
+		{
+			return 0;
+		}
+
+		public override int GetOutputSize(int inputLen)
+		{
+			return inputLen;
+		}
+
+		public override int GetUpdateOutputSize(int inputLen)
+		{
+			return inputLen;
+		}
+
+		public override byte[] ProcessByte(byte input)
+		{
+			return new byte[]{ m_cipher.ReturnByte(input) };
+		}
+
+        public override int ProcessByte(byte input, byte[] output, int outOff)
+        {
+            if (outOff >= output.Length)
+				throw new DataLengthException("output buffer too short");
+
+			output[outOff] = m_cipher.ReturnByte(input);
+			return 1;
+		}
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public override int ProcessByte(byte input, Span<byte> output)
+        {
+            output[0] = m_cipher.ReturnByte(input);
+            return 1;
+        }
+#endif
+
+        public override byte[] ProcessBytes(byte[] input, int inOff, int length)
+        {
+            if (length < 1)
+				return null;
+
+			byte[] output = new byte[length];
+			m_cipher.ProcessBytes(input, inOff, length, output, 0);
+			return output;
+		}
+
+        public override int ProcessBytes(byte[] input, int inOff, int length, byte[] output, int outOff)
+        {
+            if (length < 1)
+				return 0;
+
+			m_cipher.ProcessBytes(input, inOff, length, output, outOff);
+			return length;
+		}
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+		public override int ProcessBytes(ReadOnlySpan<byte> input, Span<byte> output)
+		{
+			m_cipher.ProcessBytes(input, output);
+			return input.Length;
+		}
+#endif
+
+		public override byte[] DoFinal()
+		{
+			m_cipher.Reset();
+
+			return EmptyBuffer;
+		}
+
+		public override byte[] DoFinal(byte[] input, int inOff, int length)
+		{
+			if (length < 1)
+				return EmptyBuffer;
+
+            byte[] output = new byte[length];
+            m_cipher.ProcessBytes(input, inOff, length, output, 0);
+            m_cipher.Reset();
+            return output;
+		}
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public override int DoFinal(Span<byte> output)
+		{
+			m_cipher.Reset();
+			return 0;
+		}
+
+        public override int DoFinal(ReadOnlySpan<byte> input, Span<byte> output)
+        {
+            m_cipher.ProcessBytes(input, output);
+            m_cipher.Reset();
+            return input.Length;
+        }
+#endif
+
+        public override void Reset()
+		{
+			m_cipher.Reset();
+		}
+	}
+}
+#pragma warning restore
+#endif