- Initial commit

Runtime/3rdParty/BouncyCastle/tls/crypto/impl/bc/BcTlsAeadCipherImpl.cs

@@ -0,0 +1,70 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Modes;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Tls.Crypto.Impl.BC
+{
+    internal sealed class BcTlsAeadCipherImpl
+        : TlsAeadCipherImpl
+    {
+        private readonly bool m_isEncrypting;
+        private readonly IAeadCipher m_cipher;
+
+        private KeyParameter key;
+
+        internal BcTlsAeadCipherImpl(IAeadCipher cipher, bool isEncrypting)
+        {
+            this.m_cipher = cipher;
+            this.m_isEncrypting = isEncrypting;
+        }
+
+        public void SetKey(byte[] key, int keyOff, int keyLen)
+        {
+            this.key = new KeyParameter(key, keyOff, keyLen);
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public void SetKey(ReadOnlySpan<byte> key)
+        {
+            this.key = new KeyParameter(key);
+        }
+#endif
+
+        public void Init(byte[] nonce, int macSize, byte[] additionalData)
+        {
+            m_cipher.Init(m_isEncrypting, new AeadParameters(key, macSize * 8, nonce, additionalData));
+        }
+
+        public int GetOutputSize(int inputLength)
+        {
+            return m_cipher.GetOutputSize(inputLength);
+        }
+
+        public int DoFinal(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset)
+        {
+            int len = m_cipher.ProcessBytes(input, inputOffset, inputLength, output, outputOffset);
+
+            try
+            {
+                len += m_cipher.DoFinal(output, outputOffset + len);
+            }
+            catch (InvalidCipherTextException e)
+            {
+                throw new TlsFatalAlert(AlertDescription.bad_record_mac, e);
+            }
+
+            return len;
+        }
+
+        public void Reset()
+        {
+            m_cipher.Reset();
+        }
+    }
+}
+#pragma warning restore
+#endif