Syrone Wong
2fafc52def
* Refine encryption - Add AES-CTR, blowfish and camellia ciphers aes-256-ctr aes-192-ctr aes-128-ctr bf-cfb camellia-128-cfb camellia-192-cfb camellia-256-cfb - Merge the previous PolarSSL and MbedTLS - Switch to MbedTLS's cipher layer functions - Add workaround to set cipher operation(encrypt/decrypt) Signed-off-by: Syrone Wong <wong.syrone@gmail.com> * Add function to get MbedTLS cipher context size and drop hard-coded ctx sizes Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using Shadowsocks.Controller;
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using Shadowsocks.Properties;
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using Shadowsocks.Util;
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namespace Shadowsocks.Encryption
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{
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public class MbedTLS
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{
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const string DLLNAME = "libsscrypto";
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public const int MBEDTLS_ENCRYPT = 1;
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public const int MBEDTLS_DECRYPT = 0;
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static MbedTLS()
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{
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string dllPath = Utils.GetTempPath("libsscrypto.dll");
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try
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{
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FileManager.UncompressFile(dllPath, Resources.libsscrypto_dll);
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}
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catch (IOException)
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{
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}
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catch (Exception e)
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{
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Logging.LogUsefulException(e);
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}
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LoadLibrary(dllPath);
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}
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public static byte[] MD5(byte[] input)
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{
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byte[] output = new byte[16];
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md5(input, (uint)input.Length, output);
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return output;
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}
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[DllImport("Kernel32.dll")]
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private static extern IntPtr LoadLibrary(string path);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern IntPtr cipher_info_from_string(string cipher_name);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern void cipher_init(IntPtr ctx);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_setup(IntPtr ctx, IntPtr cipher_info);
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// check operation
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_setkey(IntPtr ctx, byte[] key, int key_bitlen, int operation);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_set_iv(IntPtr ctx, byte[] iv, int iv_len);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_reset(IntPtr ctx);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_update(IntPtr ctx, byte[] input, int ilen, byte[] output, ref int olen);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern void cipher_free(IntPtr ctx);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern void md5(byte[] input, uint ilen, byte[] output);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern void cipher_set_operation_ex(IntPtr ctx, int operation);
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[DllImport(DLLNAME, CallingConvention = CallingConvention.Cdecl)]
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public static extern int cipher_get_size_ex();
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}
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}
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