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- using System;
- using System.Collections.Generic;
- using System.Reflection;
- using Shadowsocks.Encryption.AEAD;
- using Shadowsocks.Encryption.Stream;
-
- namespace Shadowsocks.Encryption
- {
- public static class EncryptorFactory
- {
- private static Dictionary<string, Type> _registeredEncryptors = new Dictionary<string, Type>();
-
- private static readonly Type[] ConstructorTypes = {typeof(string), typeof(string)};
-
- static EncryptorFactory()
- {
- foreach (string method in StreamMbedTLSEncryptor.SupportedCiphers())
- {
- _registeredEncryptors.Add(method, typeof(StreamMbedTLSEncryptor));
- }
- foreach (string method in StreamSodiumEncryptor.SupportedCiphers())
- {
- _registeredEncryptors.Add(method, typeof(StreamSodiumEncryptor));
- }
- foreach (string method in AEADMbedTLSEncryptor.SupportedCiphers())
- {
- _registeredEncryptors.Add(method, typeof(AEADMbedTLSEncryptor));
- }
- foreach (string method in AEADSodiumEncryptor.SupportedCiphers())
- {
- _registeredEncryptors.Add(method, typeof(AEADSodiumEncryptor));
- }
- }
-
- public static IEncryptor GetEncryptor(string method, string password)
- {
- if (method.IsNullOrEmpty())
- {
- method = "aes-256-cfb";
- }
- method = method.ToLowerInvariant();
- Type t = _registeredEncryptors[method];
- ConstructorInfo c = t.GetConstructor(ConstructorTypes);
- if (c == null) throw new System.Exception("Invalid ctor");
- IEncryptor result = (IEncryptor) c.Invoke(new object[] {method, password});
- return result;
- }
- }
- }
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