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native plugin

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fix import flags

Show native state in ToString for NM HUD

Old unity support
This commit is contained in:
Robin Rolf 2024-02-26 23:18:04 +00:00
parent 482bd2615e
commit 4de68fe8f8
39 changed files with 621 additions and 3 deletions
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30
Assets/Mirror/Transports/Encryption/EncryptedConnection.cs
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@ -1,5 +1,6 @@
using System;
using System.Security.Cryptography;
using Mirror.Transports.Encryption.Native;
using System.Text;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Agreement;
@ -131,6 +132,7 @@ enum State
* The client does this, since the fin is not acked explicitly, but by receiving data to decrypt
*/
private readonly bool _sendsFirst;
private byte[] _keyRaw;
public EncryptedConnection(EncryptionCredentials credentials,
bool isClient,
@ -363,6 +365,18 @@ private ArraySegment<byte> Encrypt(ArraySegment<byte> plaintext)
#endif
// Resize the static buffer to fit
EnsureSize(ref _tmpCryptBuffer, outSize);
if (AesGCMEncryptionNative.IsSupported)
{
ArraySegment<byte> nativeRes = AesGCMEncryptionNative.Encrypt(_keyRaw, _nonce, plaintext, new ArraySegment<byte>(_tmpCryptBuffer));
if (nativeRes.Count == 0)
{
_error(TransportError.Unexpected, $"Native Encryption failed. Please check STDERR (or editor log) for the error.");
return new ArraySegment<byte>();
}
return nativeRes;
}
int resultLen;
try
{
@ -411,6 +425,16 @@ private ArraySegment<byte> Decrypt(ArraySegment<byte> ciphertext)
#endif
// Resize the static buffer to fit
EnsureSize(ref _tmpCryptBuffer, outSize);
if (AesGCMEncryptionNative.IsSupported)
{
var nativeRes = AesGCMEncryptionNative.Decrypt(_keyRaw, ReceiveNonce, ciphertext, new ArraySegment<byte>(_tmpCryptBuffer));
if (nativeRes.Count == 0)
{
_error(TransportError.Unexpected, $"Native Encryption failed. Please check STDERR (or editor log) for the error.");
return new ArraySegment<byte>();
}
return nativeRes;
}
int resultLen;
try
{
@ -537,12 +561,12 @@ private void CompleteExchange(ArraySegment<byte> remotePubKeyRaw, byte[] salt)
Hkdf.Init(new HkdfParameters(sharedSecret, salt, HkdfInfo));
// Allocate a buffer for the output key
byte[] keyRaw = new byte[KeyLength];
_keyRaw = new byte[KeyLength];
// Generate the output keying material
Hkdf.GenerateBytes(keyRaw, 0, keyRaw.Length);
Hkdf.GenerateBytes(_keyRaw, 0, _keyRaw.Length);
KeyParameter key = new KeyParameter(keyRaw);
KeyParameter key = new KeyParameter(_keyRaw);
// generate a starting nonce
_nonce = GenerateSecureBytes(NonceSize);

6
Assets/Mirror/Transports/Encryption/EncryptionTransport.cs
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@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using Mirror.Transports.Encryption.Native;
using UnityEngine;
using UnityEngine.Profiling;
using UnityEngine.Serialization;
@ -38,6 +39,11 @@ public enum ValidationMode
public string EncryptionPublicKeyFingerprint => _credentials?.PublicKeyFingerprint;
public byte[] EncryptionPublicKey => _credentials?.PublicKeySerialized;
public override string ToString()
{
return $"EncryptionTransport(native: {AesGCMEncryptionNative.IsSupported})";
}
private void ServerRemoveFromPending(EncryptedConnection con)
{
for (int i = 0; i < _serverPendingConnections.Count; i++)

3
Assets/Mirror/Transports/Encryption/Native.meta Normal file
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@ -0,0 +1,3 @@
fileFormatVersion: 2
guid: f4ce017555fd48b7974abd511fd855c1
timeCreated: 1708980635

81
Assets/Mirror/Transports/Encryption/Native/AesGCMEncryptionNative.cs Normal file
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@ -0,0 +1,81 @@
using System;
using System.Runtime.InteropServices;
using System.Security;
using UnityEngine;
namespace Mirror.Transports.Encryption.Native
{
public class AesGCMEncryptionNative
{
[SuppressUnmanagedCodeSecurity]
[DllImport("rusty_mirror_encryption", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
private static extern byte is_supported();
[SuppressUnmanagedCodeSecurity]
[DllImport("rusty_mirror_encryption", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
private static extern uint aes_gcm_encrypt(
UIntPtr key, uint key_size,
UIntPtr nonce, uint nonce_size,
UIntPtr data, uint data_in_size, uint data_capacity);
[SuppressUnmanagedCodeSecurity]
[DllImport("rusty_mirror_encryption", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
private static extern uint aes_gcm_decrypt(
UIntPtr key, uint key_size,
UIntPtr nonce, uint nonce_size,
UIntPtr data, uint data_size);
private static bool _supported;
static AesGCMEncryptionNative()
{
try
{
_supported = is_supported() == 1;
}
catch (Exception e)
{
// TODO: silent?
Debug.LogWarning($"Native AES GCM is not supported: {e}");
}
}
public static bool IsSupported => _supported;
public static unsafe ArraySegment<byte> Encrypt(byte[] key, byte[] nonce, ArraySegment<byte> plaintext, ArraySegment<byte> dataOut)
{
Array.Copy(plaintext.Array, plaintext.Offset, dataOut.Array, dataOut.Offset ,plaintext.Count);
fixed (byte* keyPtr = key)
{
fixed (byte* noncePtr = nonce)
{
fixed (byte* dataPtr = dataOut.Array)
{
UIntPtr data = ((UIntPtr)dataPtr) + dataOut.Offset;
uint resultLength = aes_gcm_encrypt(
(UIntPtr)keyPtr, (uint)key.Length,
(UIntPtr)noncePtr, (uint)nonce.Length,
data, (uint)plaintext.Count, (uint)dataOut.Count);
return new ArraySegment<byte>(dataOut.Array, dataOut.Offset, (int)resultLength);
}
}
}
}
public static unsafe ArraySegment<byte> Decrypt(byte[] key, byte[] nonce, ArraySegment<byte> ciphertext, ArraySegment<byte> dataOut)
{
Array.Copy(ciphertext.Array, ciphertext.Offset, dataOut.Array, dataOut.Offset, ciphertext.Count);
fixed (byte* keyPtr = key)
{
fixed (byte* noncePtr = nonce)
{
fixed (byte* dataPtr = dataOut.Array)
{
UIntPtr data = ((UIntPtr)dataPtr) + dataOut.Offset;
uint resultLength = aes_gcm_decrypt(
(UIntPtr)keyPtr, (uint)key.Length,
(UIntPtr)noncePtr, (uint)nonce.Length,
data, (uint)ciphertext.Count);
return new ArraySegment<byte>(dataOut.Array, dataOut.Offset, (int)resultLength);
}
}
}
}
}
}

3
Assets/Mirror/Transports/Encryption/Native/AesGCMEncryptionNative.cs.meta Normal file
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@ -0,0 +1,3 @@
fileFormatVersion: 2
guid: 62ce567e6de54179a7e71c6173c07074
timeCreated: 1708980733

21
Assets/Mirror/Transports/Encryption/Native/LICENSE Normal file
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@ -0,0 +1,21 @@
MIT License
Copyright (c) 2024 Robin Rolf
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

3
Assets/Mirror/Transports/Encryption/Native/LICENSE.meta Normal file
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@ -0,0 +1,3 @@
fileFormatVersion: 2
guid: 3b3ffcf9d4944ce1ba77dc8853552169
timeCreated: 1708988561

4
Assets/Mirror/Transports/Encryption/Native/README.md Normal file
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@ -0,0 +1,4 @@
# [RustyMirrorEncryption](https://github.com/imerr/RustyMirrorEncryption)
A tiny native library for hardware accelerated AES-GCM encryption and decryption for the EncryptionTransport in [Mirror](https://github.com/MirrorNetworking/Mirror)
Uses [RustCryptos aes_gcm crate](https://github.com/RustCrypto/AEADs/tree/master/aes-gcm) crate

3
Assets/Mirror/Transports/Encryption/Native/README.md.meta Normal file
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