cleanup

- Add DragonX coin and rx/hush algorithm support
- Update branding to XMRig-HAC / dragonx.is
- Update repository URLs to git.hush.is
- Replace example wallet addresses with placeholders
- Update .gitignore for build directories
- Document fork changes in README and CHANGELOG

.github/ISSUE_TEMPLATE/bug_report.md

@@ -17,9 +17,9 @@ Steps to reproduce the behavior.
 A clear and concise description of what you expected to happen.
 
 **Required data**
- - XMRig version
+ - XMRig-HAC version
-    - Either the exact link to a release you downloaded from https://github.com/xmrig/xmrig/releases
+    - Either the exact link to a release you downloaded from https://git.hush.is/dragonx/xmrig-hac/releases
-    - Or the exact command lines that you used to build XMRig
+    - Or the exact command lines that you used to build XMRig-HAC
  - Miner log as text or screenshot
  - Config file or command line (without wallets)
  - OS: [e.g. Windows]

.gitignore

@@ -1,8 +1,39 @@
+# Build output
 /build
+/build-windows
 scripts/build
+
+# Dependencies
+/deps-windows
 scripts/deps
+
+# IDE / editor
 /CMakeLists.txt.user
 /.idea
-/src/backend/opencl/cl/cn/cryptonight_gen.cl
 .vscode
 /.qtcreator
+
+# Mining config (contains pool/wallet settings — copy config.example.json)
+src/config.json
+
+# Build artifacts (safety net)
+*.o
+*.a
+*.so
+*.dll
+*.exe
+
+# Logs
+*.log
+
+# Dependency tarballs
+*.tar.gz
+
+# Generated OpenCL
+/src/backend/opencl/cl/cn/cryptonight_gen.cl
+
+# OS files
+.DS_Store
+Thumbs.db
+*.swp
+*~

CHANGELOG.md

@@ -1,3 +1,11 @@
+# XMRig-HAC Fork
+- Added **DragonX** coin support
+- Added **rx/hush** algorithm (RandomX-HUSH variant for HUSH/DragonX)
+- Customized RandomX configuration for HUSH/DragonX mining
+- Based on XMRig v6.25.0
+
+---
+
 # v6.25.0
 - [#3680](https://github.com/xmrig/xmrig/pull/3680) Added `armv8l` to the list of 32-bit ARM targets.
 - [#3708](https://github.com/xmrig/xmrig/pull/3708) Minor Aarch64 JIT changes (better instruction selection, don't emit instructions that add 0, etc).

CMakeLists.txt

@@ -162,7 +162,7 @@ if (XMRIG_OS_WIN)
         src/crypto/common/VirtualMemory_win.cpp
         )
 
-    set(EXTRA_LIBS ws2_32 psapi iphlpapi userenv dbghelp)
+    set(EXTRA_LIBS ws2_32 psapi iphlpapi userenv dbghelp bcrypt)
 elseif (XMRIG_OS_APPLE)
     list(APPEND SOURCES_OS
         src/App_unix.cpp

README.md

@@ -1,13 +1,17 @@
-# XMRig
+# XMRig-HAC
 
-[![Github All Releases](https://img.shields.io/github/downloads/xmrig/xmrig/total.svg)](https://github.com/xmrig/xmrig/releases)
+XMRig-HAC is a fork of [XMRig](https://github.com/xmrig/xmrig) with added support for **DragonX** coin mining using the **rx/hush** (RandomX-HUSH) algorithm.
-[![GitHub release](https://img.shields.io/github/release/xmrig/xmrig/all.svg)](https://github.com/xmrig/xmrig/releases)
-[![GitHub Release Date](https://img.shields.io/github/release-date/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/releases)
-[![GitHub license](https://img.shields.io/github/license/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/blob/master/LICENSE)
-[![GitHub stars](https://img.shields.io/github/stars/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/stargazers)
-[![GitHub forks](https://img.shields.io/github/forks/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/network)
 
-XMRig is a high performance, open source, cross platform RandomX, KawPow, CryptoNight and [GhostRider](https://github.com/xmrig/xmrig/tree/master/src/crypto/ghostrider#readme) unified CPU/GPU miner and [RandomX benchmark](https://xmrig.com/benchmark). Official binaries are available for Windows, Linux, macOS and FreeBSD.
+**Repository:** [git.hush.is/dragonx/xmrig-hac](https://git.hush.is/dragonx/xmrig-hac)
+
+## Fork Changes
+
+This fork adds:
+- **DragonX** coin support
+- **rx/hush** algorithm (RandomX-HUSH variant)
+- Customized RandomX configuration for HUSH/DragonX
+
+Based on XMRig v6.25.0.
 
 ## Mining backends
 - **CPU** (x86/x64/ARMv7/ARMv8/RISC-V)
@@ -15,7 +19,7 @@ XMRig is a high performance, open source, cross platform RandomX, KawPow, Crypto
 - **CUDA** for NVIDIA GPUs via external [CUDA plugin](https://github.com/xmrig/xmrig-cuda).
 
 ## Download
-* **[Binary releases](https://github.com/xmrig/xmrig/releases)**
+* **[Binary releases](https://git.hush.is/dragonx/xmrig-hac/releases)**
 * **[Build from source](https://xmrig.com/docs/miner/build)**
 
 ## Usage
@@ -24,15 +28,8 @@ The preferred way to configure the miner is the [JSON config file](https://xmrig
 * **[Wizard](https://xmrig.com/wizard)** helps you create initial configuration for the miner.
 * **[Workers](http://workers.xmrig.info)** helps manage your miners via HTTP API.
 
-## Donations
+## Credits
-* Default donation 1% (1 minute in 100 minutes) can be increased via option `donate-level` or disabled in source code.
-* XMR: `48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD`
 
-## Developers
+This fork is based on [XMRig](https://github.com/xmrig/xmrig) by:
 * **[xmrig](https://github.com/xmrig)**
 * **[sech1](https://github.com/SChernykh)**
-
-## Contacts
-* support@xmrig.com
-* [reddit](https://www.reddit.com/user/XMRig/)
-* [twitter](https://twitter.com/xmrig_dev)

cmake/OpenSSL.cmake

@@ -14,8 +14,20 @@ if (WITH_TLS)
         set(OPENSSL_USE_STATIC_LIBS TRUE)
     endif()
 
+    # For cross-compilation, allow manual specification of OpenSSL paths
+    if (CMAKE_CROSSCOMPILING AND XMRIG_DEPS)
+        set(OPENSSL_INCLUDE_DIR "${XMRIG_DEPS}/include" CACHE PATH "OpenSSL include dir")
+        set(OPENSSL_CRYPTO_LIBRARY "${XMRIG_DEPS}/lib/libcrypto.a" CACHE FILEPATH "OpenSSL crypto lib")
+        set(OPENSSL_SSL_LIBRARY "${XMRIG_DEPS}/lib/libssl.a" CACHE FILEPATH "OpenSSL ssl lib")
+        if (EXISTS "${OPENSSL_CRYPTO_LIBRARY}" AND EXISTS "${OPENSSL_SSL_LIBRARY}" AND EXISTS "${OPENSSL_INCLUDE_DIR}/openssl/ssl.h")
+            set(OPENSSL_FOUND TRUE)
+            set(OPENSSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
+        endif()
+    endif()
 
-    find_package(OpenSSL)
+    if (NOT OPENSSL_FOUND)
+        find_package(OpenSSL)
+    endif()
 
     if (OPENSSL_FOUND)
         set(TLS_SOURCES

cmake/mingw-w64-toolchain.cmake

@@ -0,0 +1,19 @@
+# CMake Toolchain file for cross-compiling to Windows using MinGW-w64
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+# Specify the cross compiler
+set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)
+set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)
+set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+
+# Target environment on the build host system
+set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
+
+# Adjust the default behaviour of the FIND_XXX() commands:
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+
+# Search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

doc/api/1/config.json

@@ -20,7 +20,7 @@
     "pools": [
         {
             "url": "pool.monero.hashvault.pro:3333",
-            "user": "48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD",
+            "user": "YOUR_WALLET_ADDRESS",
             "pass": "x",
             "keepalive": false,
             "nicehash": false,
@@ -28,7 +28,7 @@
         },
         {
             "url": "pool.supportxmr.com:3333",
-            "user": "48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD",
+            "user": "YOUR_WALLET_ADDRESS",
             "pass": "x",
             "keepalive": false,
             "nicehash": false,

package.json

@@ -11,13 +11,13 @@
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/xmrig/xmrig.git"
+    "url": "git+https://git.hush.is/dragonx/xmrig-hac.git"
   },
   "keywords": [],
   "author": "",
   "license": "GPLv3",
   "bugs": {
-    "url": "https://github.com/xmrig/xmrig/issues"
+    "url": "https://git.hush.is/dragonx/xmrig-hac/issues"
   },
-  "homepage": "https://github.com/xmrig/xmrig#readme"
+  "homepage": "https://git.hush.is/dragonx/xmrig-hac#readme"
 }

scripts/build_windows.sh

@@ -0,0 +1,112 @@
+#!/bin/bash
+# XMRig Windows Cross-Compilation Build Script
+# Builds xmrig for Windows using MinGW-w64 on Linux
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+XMRIG_DIR="$(dirname "$SCRIPT_DIR")"
+BUILD_DIR="$XMRIG_DIR/build-windows"
+DEPS_DIR="$XMRIG_DIR/deps-windows"
+OPENSSL_VERSION="1.1.1w"
+
+echo "=== XMRig Windows Build ==="
+echo "Source: $XMRIG_DIR"
+echo "Build:  $BUILD_DIR"
+echo "Deps:   $DEPS_DIR"
+
+# Check for MinGW-w64
+if ! command -v x86_64-w64-mingw32-gcc-posix &> /dev/null; then
+    echo "Error: MinGW-w64 not found. Install with:"
+    echo "  sudo apt install mingw-w64"
+    exit 1
+fi
+
+# Create directories
+mkdir -p "$BUILD_DIR"
+mkdir -p "$DEPS_DIR/include"
+mkdir -p "$DEPS_DIR/lib"
+
+# Build OpenSSL if needed
+if [ ! -f "$DEPS_DIR/lib/libssl.a" ]; then
+    echo "=== Building OpenSSL $OPENSSL_VERSION ==="
+    cd "$DEPS_DIR"
+    
+    if [ ! -f "openssl-${OPENSSL_VERSION}.tar.gz" ]; then
+        wget "https://openssl.org/source/old/1.1.1/openssl-${OPENSSL_VERSION}.tar.gz"
+    fi
+    
+    if [ ! -d "openssl-${OPENSSL_VERSION}" ]; then
+        tar -xzf "openssl-${OPENSSL_VERSION}.tar.gz"
+    fi
+    
+    cd "openssl-${OPENSSL_VERSION}"
+    
+    # Configure for Windows cross-compilation
+    ./Configure mingw64 \
+        --cross-compile-prefix=x86_64-w64-mingw32- \
+        no-shared \
+        no-asm \
+        no-zlib \
+        no-comp \
+        --prefix="$DEPS_DIR"
+    
+    make -j$(nproc)
+    make install_sw
+    cd "$DEPS_DIR"
+fi
+
+# Build libuv if needed
+if [ ! -f "$DEPS_DIR/lib/libuv.a" ]; then
+    echo "=== Building libuv dependency ==="
+    cd "$DEPS_DIR"
+    
+    if [ ! -d "libuv-v1.51.0" ]; then
+        if [ ! -f "libuv.tar.gz" ]; then
+            curl -L -o libuv.tar.gz https://github.com/libuv/libuv/archive/refs/tags/v1.51.0.tar.gz
+        fi
+        tar -xzf libuv.tar.gz
+    fi
+    
+    cd libuv-v1.51.0
+    mkdir -p build && cd build
+    cmake .. \
+        -DCMAKE_TOOLCHAIN_FILE="$XMRIG_DIR/cmake/mingw-w64-toolchain.cmake" \
+        -DCMAKE_INSTALL_PREFIX="$DEPS_DIR" \
+        -DLIBUV_BUILD_SHARED=OFF \
+        -DBUILD_TESTING=OFF
+    make -j$(nproc)
+    make install
+fi
+
+cd "$BUILD_DIR"
+
+echo "=== Configuring XMRig ==="
+cmake "$XMRIG_DIR" \
+    -DCMAKE_TOOLCHAIN_FILE="$XMRIG_DIR/cmake/mingw-w64-toolchain.cmake" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DBUILD_STATIC=ON \
+    -DWITH_TLS=ON \
+    -DWITH_HWLOC=OFF \
+    -DWITH_OPENCL=OFF \
+    -DWITH_CUDA=OFF \
+    -DXMRIG_DEPS="$DEPS_DIR" \
+    -DOPENSSL_ROOT_DIR:PATH="$DEPS_DIR" \
+    -DOPENSSL_INCLUDE_DIR:PATH="$DEPS_DIR/include" \
+    -DOPENSSL_CRYPTO_LIBRARY:FILEPATH="$DEPS_DIR/lib/libcrypto.a" \
+    -DOPENSSL_SSL_LIBRARY:FILEPATH="$DEPS_DIR/lib/libssl.a" \
+    -DOPENSSL_LIBRARIES="$DEPS_DIR/lib/libssl.a;$DEPS_DIR/lib/libcrypto.a" \
+    -DUV_INCLUDE_DIR="$DEPS_DIR/include" \
+    -DUV_LIBRARY="$DEPS_DIR/lib/libuv.a"
+
+echo "=== Building XMRig ==="
+make -j$(nproc)
+
+# Strip the executable
+x86_64-w64-mingw32-strip xmrig.exe 2>/dev/null || true
+
+echo ""
+echo "=== Build Complete ==="
+ls -la *.exe 2>/dev/null || echo "Executable not found"
+echo ""
+echo "Copy the .exe and WinRing0x64.sys to Windows to run"

scripts/pool_mine_example.cmd

@@ -16,5 +16,5 @@
 :: Smaller pools also often have smaller fees/payout limits.
 
 cd /d "%~dp0"
-xmrig.exe -o xmrpool.eu:3333 -u 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD -p x
+xmrig.exe -o xmrpool.eu:3333 -u YOUR_WALLET_ADDRESS -p x
 pause

scripts/solo_mine_example.cmd

@@ -12,5 +12,5 @@
 :: But you will only get a payout when you find a block which can take more than a year for a single low-end PC.
 
 cd /d "%~dp0"
-xmrig.exe -o YOUR_NODE_IP:18081 -a rx/0 -u 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD --daemon
+xmrig.exe -o YOUR_NODE_IP:18081 -a rx/0 -u YOUR_WALLET_ADDRESS --daemon
 pause

src/base/base.cmake

@@ -200,6 +200,7 @@ if (WITH_HTTP)
         src/base/net/http/HttpData.h
         src/base/net/http/HttpResponse.h
         src/base/net/stratum/DaemonClient.h
+        src/base/net/stratum/HushClient.h
         src/base/net/stratum/SelfSelectClient.h
         src/base/net/tools/TcpServer.h
         )
@@ -220,6 +221,7 @@ if (WITH_HTTP)
         src/base/net/http/HttpListener.cpp
         src/base/net/http/HttpResponse.cpp
         src/base/net/stratum/DaemonClient.cpp
+        src/base/net/stratum/HushClient.cpp
         src/base/net/stratum/SelfSelectClient.cpp
         src/base/net/tools/TcpServer.cpp
         )

src/base/crypto/Algorithm.cpp

@@ -82,6 +82,7 @@ const char *Algorithm::kRX_ARQ          = "rx/arq";
 const char *Algorithm::kRX_GRAFT        = "rx/graft";
 const char *Algorithm::kRX_SFX          = "rx/sfx";
 const char *Algorithm::kRX_YADA         = "rx/yada";
+const char *Algorithm::kRX_HUSH         = "rx/hush";
 #endif
 
 #ifdef XMRIG_ALGO_ARGON2
@@ -148,6 +149,7 @@ static const std::map<uint32_t, const char *> kAlgorithmNames = {
     ALGO_NAME(RX_GRAFT),
     ALGO_NAME(RX_SFX),
     ALGO_NAME(RX_YADA),
+    ALGO_NAME(RX_HUSH),
 #   endif
 
 #   ifdef XMRIG_ALGO_ARGON2
@@ -263,6 +265,10 @@ static const std::map<const char *, Algorithm::Id, aliasCompare> kAlgorithmAlias
                                     ALGO_ALIAS(RX_SFX,          "randomsfx"),
     ALGO_ALIAS_AUTO(RX_YADA),       ALGO_ALIAS(RX_YADA,         "randomx/yada"),
                                     ALGO_ALIAS(RX_YADA,         "randomyada"),
+    ALGO_ALIAS_AUTO(RX_HUSH),       ALGO_ALIAS(RX_HUSH,         "randomx/hush"),
+                                    ALGO_ALIAS(RX_HUSH,         "randomhush"),
+                                    ALGO_ALIAS(RX_HUSH,         "rx/dragonx"),
+                                    ALGO_ALIAS(RX_HUSH,         "dragonx"),
 #   endif
 
 #   ifdef XMRIG_ALGO_ARGON2
@@ -350,7 +356,7 @@ std::vector<xmrig::Algorithm> xmrig::Algorithm::all(const std::function<bool(con
         CN_HEAVY_0, CN_HEAVY_TUBE, CN_HEAVY_XHV,
         CN_PICO_0, CN_PICO_TLO,
         CN_UPX2,
-        RX_0, RX_WOW, RX_ARQ, RX_GRAFT, RX_SFX, RX_YADA,
+        RX_0, RX_WOW, RX_ARQ, RX_GRAFT, RX_SFX, RX_YADA, RX_HUSH,
         AR2_CHUKWA, AR2_CHUKWA_V2, AR2_WRKZ,
         KAWPOW_RVN,
         GHOSTRIDER_RTM

src/base/crypto/Algorithm.h

@@ -78,6 +78,7 @@ public:
         RX_GRAFT        = 0x72151267,   // "rx/graft"         RandomGRAFT (Graft).
         RX_SFX          = 0x72151273,   // "rx/sfx"           RandomSFX (Safex Cash).
         RX_YADA         = 0x72151279,   // "rx/yada"          RandomYada (YadaCoin).
+        RX_HUSH         = 0x72151268,   // "rx/hush"          RandomX-HUSH (HUSH/DragonX).
         AR2_CHUKWA      = 0x61130000,   // "argon2/chukwa"    Argon2id (Chukwa).
         AR2_CHUKWA_V2   = 0x61140000,   // "argon2/chukwav2"  Argon2id (Chukwa v2).
         AR2_WRKZ        = 0x61120000,   // "argon2/wrkz"      Argon2id (WRKZ)
@@ -144,6 +145,7 @@ public:
     static const char *kRX_GRAFT;
     static const char *kRX_SFX;
     static const char *kRX_YADA;
+    static const char *kRX_HUSH;
 #   endif
 
 #   ifdef XMRIG_ALGO_ARGON2

src/base/crypto/Coin.cpp

@@ -55,6 +55,8 @@ static const CoinInfo coinInfo[] = {
     { Algorithm::RX_0,            "ZEPH",     "Zephyr",       120,    1000000000000,  BLUE_BG_BOLD(   WHITE_BOLD_S " zephyr  ") },
     { Algorithm::RX_0,            "Townforge","Townforge",    30,     100000000,      MAGENTA_BG_BOLD(WHITE_BOLD_S " townforge ") },
     { Algorithm::RX_YADA,         "YDA",      "YadaCoin",     120,    100000000,      BLUE_BG_BOLD(   WHITE_BOLD_S " yada    ") },
+    { Algorithm::RX_HUSH,         "HUSH",     "Hush",         150,    100000000,      GREEN_BG_BOLD(  WHITE_BOLD_S " hush    ") },
+    { Algorithm::RX_HUSH,         "DRAGONX",  "DragonX",      36,     100000000,      CYAN_BG_BOLD(   WHITE_BOLD_S " dragonx ") },
 };
 
 

src/base/crypto/Coin.h

@@ -41,6 +41,8 @@ public:
         ZEPHYR,
         TOWNFORGE,
         YADA,
+        HUSH,
+        DRAGONX,
         MAX
     };
 

src/base/net/stratum/HushClient.cpp

@@ -0,0 +1,905 @@
+/* XMRig - Hush/DragonX HAC Support
+ * Copyright (c) 2024 XMRig       <https://github.com/xmrig>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ */
+
+#include "base/net/stratum/HushClient.h"
+#include "3rdparty/rapidjson/document.h"
+#include "3rdparty/rapidjson/error/en.h"
+#include "base/io/json/Json.h"
+#include "base/io/json/JsonRequest.h"
+#include "base/io/log/Log.h"
+#include "base/kernel/interfaces/IClientListener.h"
+#include "base/net/http/Fetch.h"
+#include "base/net/http/HttpData.h"
+#include "base/net/http/HttpListener.h"
+#include "base/tools/Chrono.h"
+#include "base/tools/Cvt.h"
+#include "base/tools/Timer.h"
+#include "net/JobResult.h"
+
+#include <algorithm>
+#include <cstring>
+
+#ifdef XMRIG_FEATURE_TLS
+#   include <openssl/sha.h>
+#else
+// Standalone SHA-256 for non-TLS builds (Windows cross-compile)
+#   ifdef _WIN32
+#       include <windows.h>
+#       include <bcrypt.h>
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    BCRYPT_ALG_HANDLE hAlg = nullptr;
+    BCRYPT_HASH_HANDLE hHash = nullptr;
+    BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA256_ALGORITHM, nullptr, 0);
+    BCryptCreateHash(hAlg, &hHash, nullptr, 0, nullptr, 0, 0);
+    BCryptHashData(hHash, const_cast<PUCHAR>(data), static_cast<ULONG>(len), 0);
+    BCryptFinishHash(hHash, out, 32, 0);
+    BCryptDestroyHash(hHash);
+    BCryptCloseAlgorithmProvider(hAlg, 0);
+}
+#   else
+#       include "crypto/ghostrider/sph_sha2.h"
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    sph_sha256_context ctx;
+    sph_sha256_init(&ctx);
+    sph_sha256(&ctx, data, len);
+    sph_sha256_close(&ctx, out);
+}
+#   endif
+#endif
+
+namespace xmrig {
+
+static const char *kJsonRPC = "/";
+
+// Simple Base64 encoder for HTTP Basic Auth
+static std::string toBase64(const std::string &input)
+{
+    static const char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    std::string encoded;
+    encoded.reserve(((input.size() + 2) / 3) * 4);
+
+    unsigned int val = 0;
+    int bits = -6;
+    for (unsigned char c : input) {
+        val = (val << 8) + c;
+        bits += 8;
+        while (bits >= 0) {
+            encoded.push_back(table[(val >> bits) & 0x3F]);
+            bits -= 6;
+        }
+    }
+    if (bits > -6) {
+        encoded.push_back(table[((val << 8) >> (bits + 8)) & 0x3F]);
+    }
+    while (encoded.size() % 4) {
+        encoded.push_back('=');
+    }
+    return encoded;
+}
+
+// Create JSON-RPC 1.0 request (HAC daemons use 1.0, not 2.0)
+static void createRpc10(rapidjson::Document &doc, int64_t id, const char *method, rapidjson::Value &params)
+{
+    using namespace rapidjson;
+    auto &allocator = doc.GetAllocator();
+
+    doc.AddMember("jsonrpc", "1.0", allocator);
+    doc.AddMember("id", id, allocator);
+    doc.AddMember("method", StringRef(method), allocator);
+    doc.AddMember("params", params, allocator);
+}
+
+HushClient::HushClient(int id, IClientListener *listener) :
+    BaseClient(id, listener)
+{
+    m_httpListener = std::make_shared<HttpListener>(this);
+    m_timer = new Timer(this);
+}
+
+HushClient::~HushClient()
+{
+    delete m_timer;
+}
+
+void HushClient::deleteLater()
+{
+    delete this;
+}
+
+bool HushClient::disconnect()
+{
+    if (m_state != UnconnectedState) {
+        setState(UnconnectedState);
+    }
+    return true;
+}
+
+bool HushClient::isTLS() const
+{
+#ifdef XMRIG_FEATURE_TLS
+    return m_pool.isTLS();
+#else
+    return false;
+#endif
+}
+
+void HushClient::connect()
+{
+    if (m_pool.algorithm().family() != Algorithm::RANDOM_X) {
+        LOG_ERR("%s " RED("HAC coins require RandomX algorithm"), tag());
+        return;
+    }
+
+    setState(ConnectingState);
+    getBlockTemplate();
+}
+
+void HushClient::connect(const Pool &pool)
+{
+    setPool(pool);
+    connect();
+}
+
+void HushClient::setPool(const Pool &pool)
+{
+    BaseClient::setPool(pool);
+
+    // Default to RandomX if not specified
+    if (!m_pool.algorithm().isValid()) {
+        m_pool.setAlgo(Algorithm::RX_0);
+    }
+}
+
+int64_t HushClient::submit(const JobResult &result)
+{
+    if (result.jobId != m_currentJobId) {
+        LOG_DEBUG("%s " RED("job ID mismatch"), tag());
+        return -1;
+    }
+
+    // HAC PoW: RandomX hash becomes nSolution, then SHA256D(header) must be < target
+    // Check if SHA256D(header + solution) meets network target before submitting
+    if (!checkPow(result.nonce, result.result())) {
+        // Hash doesn't meet network target, don't submit
+        return -1;
+    }
+
+    // Log submission details
+    const String solutionHex = Cvt::toHex(result.result(), 32);
+    LOG_INFO("%s " CYAN_BOLD("submitting block") " nonce=0x%08x", tag(), result.nonce);
+
+    // Build the full block with header + solution + transactions
+    const std::string blockHex = serializeBlockHex(result.nonce, result.result());
+
+    return submitBlock(blockHex);
+}
+
+void HushClient::onTimer(const Timer *)
+{
+    if (m_state == ConnectingState) {
+        connect();
+    }
+    else if (m_state == ConnectedState) {
+        // Poll for new block template
+        getBlockTemplate();
+    }
+}
+
+void HushClient::onHttpData(const HttpData &data)
+{
+    if (data.status != 200) {
+        LOG_ERR("%s " RED("HTTP error %d"), tag(), data.status);
+        return retry();
+    }
+
+    m_ip = data.ip().c_str();
+
+#ifdef XMRIG_FEATURE_TLS
+    if (data.tlsVersion()) {
+        strncpy(m_tlsVersion, data.tlsVersion(), sizeof(m_tlsVersion) - 1);
+    }
+    if (data.tlsFingerprint()) {
+        strncpy(m_tlsFingerprint, data.tlsFingerprint(), sizeof(m_tlsFingerprint) - 1);
+    }
+#endif
+
+    rapidjson::Document doc;
+    if (doc.Parse(data.body.c_str()).HasParseError()) {
+        LOG_ERR("%s " RED("JSON parse error: %s"), tag(), rapidjson::GetParseError_En(doc.GetParseError()));
+        return retry();
+    }
+
+    // Debug: log the raw response for troubleshooting
+    LOG_DEBUG("%s RPC response: %.200s", tag(), data.body.c_str());
+
+    const int64_t id = Json::getInt64(doc, "id", -1);
+    
+    // Handle "result" field which can be object, string, or null depending on RPC method
+    const rapidjson::Value *resultPtr = nullptr;
+    if (doc.HasMember("result")) {
+        resultPtr = &doc["result"];
+    }
+    static const rapidjson::Value nullValue;
+    const auto &result = resultPtr ? *resultPtr : nullValue;
+    const auto &error = Json::getObject(doc, "error");
+
+    if (!parseResponse(id, result, error)) {
+        retry();
+    }
+}
+
+int64_t HushClient::getBlockTemplate()
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    // JSON-RPC 1.0 style: params is an array with optional object
+    Value params(kArrayType);
+    // Empty params array for basic getblocktemplate
+    // HAC will return coinbasetxn by default
+
+    createRpc10(doc, m_sequence, "getblocktemplate", params);
+    m_pendingRequest = REQ_TEMPLATE;
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::getBlockHash(uint64_t height)
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    Value params(kArrayType);
+    params.PushBack(Value(height), allocator);
+
+    createRpc10(doc, m_sequence, "getblockhash", params);
+    m_pendingRequest = REQ_KEYHASH;
+    m_pendingKeyHeight = height;
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::submitBlock(const std::string &blockHex)
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    Value params(kArrayType);
+    params.PushBack(Value(blockHex.c_str(), allocator), allocator);
+
+    createRpc10(doc, m_sequence, "submitblock", params);
+    m_pendingRequest = REQ_SUBMIT;
+
+    LOG_INFO("%s " MAGENTA_BOLD("submitting block at height %u"), tag(), m_height);
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::rpcSend(const rapidjson::Document &doc)
+{
+    FetchRequest req(HTTP_POST, m_pool.host(), m_pool.port(), kJsonRPC, doc, m_pool.isTLS(), isQuiet());
+
+    // HAC daemons require text/plain content-type (override application/json)
+    req.headers.erase("Content-Type");
+    req.headers.insert({"Content-Type", "text/plain"});
+
+    // Add RPC authentication if configured
+    if (!m_pool.user().isEmpty()) {
+        std::string auth = m_pool.user().data();
+        if (!m_pool.password().isEmpty()) {
+            auth += ":";
+            auth += m_pool.password().data();
+        }
+        const std::string encoded = toBase64(auth);
+        req.headers.insert({"Authorization", "Basic " + encoded});
+    }
+
+    fetch(tag(), std::move(req), m_httpListener);
+
+    return m_sequence++;
+}
+
+bool HushClient::parseBlockTemplate(const rapidjson::Value &result)
+{
+    if (!result.IsObject()) {
+        LOG_ERR("%s " RED("invalid block template response"), tag());
+        return false;
+    }
+
+    // Check if this is the same job (same previous block hash)
+    const char *prevHash = Json::getString(result, "previousblockhash");
+    if (prevHash && m_prevJobHash == prevHash && m_state == ConnectedState) {
+        // Same block, skip duplicate job
+        return true;
+    }
+
+    // Parse BIP22 block template fields
+    m_height = Json::getUint64(result, "height");
+    m_curtime = Json::getUint64(result, "curtime");
+    m_version = Json::getInt(result, "version", 4);
+    m_prevHash = Json::getString(result, "previousblockhash");
+    m_saplingRoot = Json::getString(result, "finalsaplingroothash");
+    m_target = Json::getString(result, "target");
+    m_bits = Json::getString(result, "bits");
+
+    // Parse target into bytes for PoW comparison (32 bytes, big-endian from hex)
+    m_targetBytes.resize(32);
+    if (m_target.size() == 64) {
+        Cvt::fromHex(m_targetBytes.data(), 32, m_target.data(), 64);
+    }
+
+    // Coinbase transaction
+    const auto &coinbase = result["coinbasetxn"];
+    if (!coinbase.IsObject()) {
+        LOG_ERR("%s " RED("missing coinbasetxn in template"), tag());
+        return false;
+    }
+    m_coinbaseTx = Json::getString(coinbase, "data");
+    m_merkleRoot = Json::getString(coinbase, "hash");
+
+    LOG_DEBUG("%s template: height=%lu bits=%s target=%s", tag(), m_height, m_bits.data(), m_target.data());
+    LOG_DEBUG("%s prevHash=%s", tag(), m_prevHash.data());
+    LOG_DEBUG("%s merkleRoot=%s", tag(), m_merkleRoot.data());
+
+    // Other transactions (may be empty for low traffic chains)
+    m_transactions.clear();
+    const auto &txs = result["transactions"];
+    if (txs.IsArray()) {
+        for (const auto &tx : txs.GetArray()) {
+            if (tx.IsObject()) {
+                m_transactions.push_back(Json::getString(tx, "data"));
+            }
+        }
+    }
+
+    // Validate required fields
+    if (m_height == 0 || m_prevHash.isEmpty() || m_coinbaseTx.isEmpty()) {
+        LOG_ERR("%s " RED("incomplete block template"), tag());
+        return false;
+    }
+
+    // Check if we need to fetch new RandomX key
+    const uint64_t keyHeight = getKeyHeight(m_height);
+    if (keyHeight != m_keyHeight || m_keyBlockHash.isEmpty()) {
+        if (keyHeight == 0) {
+            // Use chain-specific initial RandomX key.
+            // Daemon computes: sprintf("%08x%s%08x", ASSETCHAINS_MAGIC, SYMBOL, RPCPORT)
+            // and passes the raw ASCII bytes to randomx_init_cache().
+            // We hex-encode those bytes (zero-padded to 32) for setSeedHash().
+            char initialKey[81];
+            const uint32_t magic = 2387029918u;  // DRAGONX ASSETCHAINS_MAGIC
+            const char* symbol = "DRAGONX";
+            const uint16_t rpcPort = 21769;
+            snprintf(initialKey, sizeof(initialKey), "%08x%s%08x", magic, symbol, (uint32_t)rpcPort);
+            const size_t keyLen = strlen(initialKey);
+            // Hex-encode only the actual key bytes (no zero-padding).
+            // The daemon passes strlen(initialKey) bytes to randomx_init_cache(),
+            // so we must match that exact length.
+            char hexBuf[163]; // max 81 bytes * 2 + 1
+            for (size_t i = 0; i < keyLen; i++) snprintf(hexBuf + i*2, 3, "%02x", (uint8_t)initialKey[i]);
+            hexBuf[keyLen * 2] = '\0';
+            m_keyBlockHash = hexBuf;
+            m_keyHeight = 0;
+            LOG_INFO("%s " CYAN("using initial RandomX key \"%s\" for height %u"), tag(), initialKey, m_height);
+        } else {
+            LOG_INFO("%s " CYAN("fetching RandomX key block hash at height %u"), tag(), keyHeight);
+            getBlockHash(keyHeight);
+            return true;  // Will continue after receiving key hash
+        }
+    }
+
+    // Create the mining job
+    Job job(false, m_pool.algorithm(), String());
+    job.setHeight(m_height);
+    
+    // Set diff=1 so ALL RandomX results get submitted to us for PoW checking
+    // We filter in submit() by checking SHA256D(header+solution) < target
+    job.setDiff(1);
+    
+    if (!job.setSeedHash(m_keyBlockHash.data())) {
+        LOG_ERR("%s " RED("failed to set seed hash: %s (len=%zu)"), tag(), m_keyBlockHash.data(), m_keyBlockHash.size());
+        return false;
+    }
+
+    // Build full block blob for RandomX hashing:
+    // HAC computes RandomX(full_serialized_block) where block = header + nSolution(empty) + txcount + txs
+    // Header: version(4) + prevHash(32) + merkleRoot(32) + saplingRoot(32) + time(4) + bits(4) + nonce(32) + nSolution(varint_len + data)
+    m_headerBlob.clear();
+    m_headerBlob.reserve(1024);  // Will grow if many transactions
+
+    // nVersion (4 bytes, little-endian)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    m_headerBlob.insert(m_headerBlob.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // hashPrevBlock (32 bytes, internal byte order)
+    std::vector<uint8_t> prevHashBytes(32);
+    Cvt::fromHex(prevHashBytes.data(), 32, m_prevHash.data(), 64);
+    std::reverse(prevHashBytes.begin(), prevHashBytes.end());
+    m_headerBlob.insert(m_headerBlob.end(), prevHashBytes.begin(), prevHashBytes.end());
+
+    // hashMerkleRoot (32 bytes)
+    std::vector<uint8_t> merkleRoot(32);
+    Cvt::fromHex(merkleRoot.data(), 32, m_merkleRoot.data(), 64);
+    std::reverse(merkleRoot.begin(), merkleRoot.end());
+    m_headerBlob.insert(m_headerBlob.end(), merkleRoot.begin(), merkleRoot.end());
+
+    // hashFinalSaplingRoot (32 bytes)
+    std::vector<uint8_t> saplingRoot(32);
+    Cvt::fromHex(saplingRoot.data(), 32, m_saplingRoot.data(), 64);
+    std::reverse(saplingRoot.begin(), saplingRoot.end());
+    m_headerBlob.insert(m_headerBlob.end(), saplingRoot.begin(), saplingRoot.end());
+
+    // nTime (4 bytes)
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    m_headerBlob.insert(m_headerBlob.end(), reinterpret_cast<const uint8_t*>(&time32), 
+                reinterpret_cast<const uint8_t*>(&time32) + 4);
+
+    // nBits (4 bytes)
+    uint32_t bits = 0;
+    for (int i = 0; i < 8 && i < static_cast<int>(m_bits.size()); i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, m_bits.data() + i, 2);
+        bits = (bits << 8) | byte;
+    }
+    m_headerBlob.insert(m_headerBlob.end(), reinterpret_cast<const uint8_t*>(&bits), 
+                reinterpret_cast<const uint8_t*>(&bits) + 4);
+
+    // nNonce placeholder (32 bytes of zeros - miner fills first 4 bytes)
+    // Remember position for later extraction
+    m_nonceOffset = m_headerBlob.size();
+    m_headerBlob.insert(m_headerBlob.end(), 32, 0);
+
+    // nSolution - empty vector serialized as compact size 0
+    // For CBlock serialization, nSolution is std::vector<unsigned char>
+    // Empty vector = compactsize(0) = 0x00
+    m_headerBlob.push_back(0x00);
+
+    // Transactions: compactsize(count) + coinbase + other txs
+    const size_t txCount = 1 + m_transactions.size();  // coinbase + others
+    
+    // Write compact size for transaction count
+    if (txCount < 0xFD) {
+        m_headerBlob.push_back(static_cast<uint8_t>(txCount));
+    } else if (txCount <= 0xFFFF) {
+        m_headerBlob.push_back(0xFD);
+        const uint16_t cnt16 = static_cast<uint16_t>(txCount);
+        m_headerBlob.insert(m_headerBlob.end(), reinterpret_cast<const uint8_t*>(&cnt16), 
+                    reinterpret_cast<const uint8_t*>(&cnt16) + 2);
+    } else {
+        m_headerBlob.push_back(0xFE);
+        const uint32_t cnt32 = static_cast<uint32_t>(txCount);
+        m_headerBlob.insert(m_headerBlob.end(), reinterpret_cast<const uint8_t*>(&cnt32), 
+                    reinterpret_cast<const uint8_t*>(&cnt32) + 4);
+    }
+
+    // Append coinbase transaction
+    std::vector<uint8_t> cbTx(m_coinbaseTx.size() / 2);
+    Cvt::fromHex(cbTx.data(), cbTx.size(), m_coinbaseTx.data(), m_coinbaseTx.size());
+    m_headerBlob.insert(m_headerBlob.end(), cbTx.begin(), cbTx.end());
+
+    // Append other transactions
+    for (const auto &txHex : m_transactions) {
+        std::vector<uint8_t> tx(txHex.size() / 2);
+        Cvt::fromHex(tx.data(), tx.size(), txHex.data(), txHex.size());
+        m_headerBlob.insert(m_headerBlob.end(), tx.begin(), tx.end());
+    }
+
+    // Set the full block blob for mining
+    LOG_DEBUG("%s block blob size=%zu (header=141 + %zu txs), seed=%s", 
+              tag(), m_headerBlob.size(), txCount, m_keyBlockHash.data());
+    {
+        const String hdrHex = Cvt::toHex(m_headerBlob.data(), std::min(m_headerBlob.size(), size_t(200)));
+        LOG_DEBUG("%s block: %s...", tag(), hdrHex.data());
+    }
+    if (!job.setBlob(Cvt::toHex(m_headerBlob.data(), m_headerBlob.size()))) {
+        LOG_ERR("%s " RED("failed to set job blob (size=%zu)"), tag(), m_headerBlob.size());
+        return false;
+    }
+
+    m_currentJobId = Cvt::toHex(Cvt::randomBytes(4));
+    job.setId(m_currentJobId);
+
+    m_job = std::move(job);
+    m_prevJobHash = m_prevHash;
+    m_jobSteadyMs = Chrono::steadyMSecs();
+
+    if (m_state == ConnectingState) {
+        LOG_INFO("%s " GREEN("connected to %s:%d"), tag(), m_pool.host().data(), m_pool.port());
+        setState(ConnectedState);
+    }
+
+    LOG_INFO("%s " MAGENTA_BOLD("new job") " height: " CYAN_BOLD("%u") " diff: " CYAN_BOLD("%u"), 
+             tag(), m_height, job.diff());
+
+    m_listener->onJobReceived(this, m_job, rapidjson::Value());
+    return true;
+}
+
+bool HushClient::parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error)
+{
+    // Handle RPC errors
+    if (error.IsObject()) {
+        const char *message = Json::getString(error, "message", "unknown error");
+        const int code = Json::getInt(error, "code", -1);
+        LOG_ERR("%s " RED("RPC error %d: \"%s\""), tag(), code, message);
+        return false;
+    }
+
+    switch (m_pendingRequest) {
+    case REQ_TEMPLATE:
+        if (parseBlockTemplate(result)) {
+            m_timer->start(m_pool.pollInterval(), m_pool.pollInterval());
+            return true;
+        }
+        return m_pendingRequest == REQ_KEYHASH;  // Waiting for key is ok
+
+    case REQ_KEYHASH:
+        if (result.IsString()) {
+            // getblockhash returns display-order (big-endian) hex, but the daemon
+            // passes uint256 internal bytes (little-endian) to randomx_init_cache().
+            // Reverse the bytes so setSeedHash() produces the correct LE byte order.
+            const char* displayHash = result.GetString();
+            std::vector<uint8_t> hashBytes(32);
+            Cvt::fromHex(hashBytes.data(), 32, displayHash, 64);
+            std::reverse(hashBytes.begin(), hashBytes.end());
+            char reversedHex[65];
+            for (size_t i = 0; i < 32; i++) snprintf(reversedHex + i*2, 3, "%02x", hashBytes[i]);
+            reversedHex[64] = '\0';
+            m_keyBlockHash = reversedHex;
+            m_keyHeight = m_pendingKeyHeight;
+            LOG_INFO("%s " GREEN("RandomX key block %u: %.16s... (reversed to LE)"), 
+                     tag(), m_keyHeight, m_keyBlockHash.data());
+            // Now get the block template again with the key
+            m_pendingRequest = REQ_NONE;
+            getBlockTemplate();
+            return true;
+        }
+        LOG_ERR("%s " RED("invalid getblockhash response - expected string, got type %d"), 
+                tag(), result.GetType());
+        return false;
+
+    case REQ_SUBMIT:
+        // submitblock returns null on success
+        if (result.IsNull()) {
+            LOG_INFO("%s " GREEN_BOLD("BLOCK ACCEPTED!"), tag());
+            if (m_results.count(id)) {
+                m_listener->onResultAccepted(this, m_results[id], nullptr);
+                m_results.erase(id);
+            }
+        } else if (result.IsString()) {
+            const char *msg = result.GetString();
+            if (strlen(msg) > 0) {
+                LOG_ERR("%s " RED("block rejected: %s"), tag(), msg);
+            } else {
+                LOG_INFO("%s " GREEN_BOLD("BLOCK ACCEPTED!"), tag());
+            }
+        }
+        // Get new work after submit
+        getBlockTemplate();
+        return true;
+
+    default:
+        return false;
+    }
+}
+
+void HushClient::retry()
+{
+    m_failures++;
+    m_listener->onClose(this, static_cast<int>(m_failures));
+
+    if (m_state == ConnectedState) {
+        setState(ConnectingState);
+    }
+
+    m_timer->stop();
+    m_timer->start(m_retryPause, 0);
+}
+
+void HushClient::setState(SocketState state)
+{
+    if (m_state == state) {
+        return;
+    }
+
+    m_state = state;
+
+    switch (state) {
+    case ConnectedState:
+        m_failures = 0;
+        m_listener->onLoginSuccess(this);
+        break;
+
+    case UnconnectedState:
+        m_timer->stop();
+        m_failures = -1;
+        m_listener->onClose(this, -1);
+        break;
+
+    default:
+        break;
+    }
+}
+
+uint64_t HushClient::getKeyHeight(uint64_t height) const
+{
+    // RandomX key changes every RANDOMX_INTERVAL blocks with RANDOMX_LAG delay
+    if (height < static_cast<uint64_t>(RANDOMX_INTERVAL + RANDOMX_LAG)) {
+        return 0;  // Use genesis key
+    }
+    return ((height - RANDOMX_LAG) / RANDOMX_INTERVAL) * RANDOMX_INTERVAL;
+}
+
+std::vector<uint8_t> HushClient::serializeBlock(uint32_t nonce, uint64_t extraNonce) const
+{
+    std::vector<uint8_t> blob;
+    blob.reserve(1024);
+
+    // nVersion (4 bytes, little-endian)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // hashPrevBlock (32 bytes, reversed from hex display)
+    std::vector<uint8_t> prevHash(32);
+    Cvt::fromHex(prevHash.data(), 32, m_prevHash.data(), 64);
+    std::reverse(prevHash.begin(), prevHash.end());
+    blob.insert(blob.end(), prevHash.begin(), prevHash.end());
+
+    // hashMerkleRoot (32 bytes, reversed)
+    std::vector<uint8_t> merkleRoot(32);
+    Cvt::fromHex(merkleRoot.data(), 32, m_merkleRoot.data(), 64);
+    std::reverse(merkleRoot.begin(), merkleRoot.end());
+    blob.insert(blob.end(), merkleRoot.begin(), merkleRoot.end());
+
+    // hashFinalSaplingRoot (32 bytes, reversed)
+    std::vector<uint8_t> saplingRoot(32);
+    Cvt::fromHex(saplingRoot.data(), 32, m_saplingRoot.data(), 64);
+    std::reverse(saplingRoot.begin(), saplingRoot.end());
+    blob.insert(blob.end(), saplingRoot.begin(), saplingRoot.end());
+
+    // nTime (4 bytes, little-endian)
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&time32), 
+                reinterpret_cast<const uint8_t*>(&time32) + 4);
+
+    // nBits (4 bytes) - convert from big-endian hex to little-endian binary
+    uint32_t bits = 0;
+    for (int i = 0; i < 8 && i < static_cast<int>(m_bits.size()); i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, m_bits.data() + i, 2);
+        bits = (bits << 8) | byte;
+    }
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&bits), 
+                reinterpret_cast<const uint8_t*>(&bits) + 4);
+
+    // nNonce (32 bytes for Zcash/Hush - uint256)
+    std::vector<uint8_t> nonce256(32, 0);
+    memcpy(nonce256.data(), &nonce, 4);
+    memcpy(nonce256.data() + 4, &extraNonce, sizeof(extraNonce));
+    blob.insert(blob.end(), nonce256.begin(), nonce256.end());
+
+    // nSolution placeholder (CompactSize + 32 zeros)
+    blob.push_back(32);  // CompactSize for 32 bytes
+    blob.insert(blob.end(), 32, 0);
+
+    // Transaction count (CompactSize)
+    const size_t txCount = 1 + m_transactions.size();
+    if (txCount < 0xFD) {
+        blob.push_back(static_cast<uint8_t>(txCount));
+    } else {
+        blob.push_back(0xFD);
+        blob.push_back(txCount & 0xFF);
+        blob.push_back((txCount >> 8) & 0xFF);
+    }
+
+    // Coinbase transaction
+    std::vector<uint8_t> coinbase(m_coinbaseTx.size() / 2);
+    Cvt::fromHex(coinbase.data(), coinbase.size(), m_coinbaseTx.data(), m_coinbaseTx.size());
+    blob.insert(blob.end(), coinbase.begin(), coinbase.end());
+
+    // Other transactions
+    for (const auto &txHex : m_transactions) {
+        std::vector<uint8_t> tx(txHex.size() / 2);
+        Cvt::fromHex(tx.data(), tx.size(), txHex.data(), txHex.size());
+        blob.insert(blob.end(), tx.begin(), tx.end());
+    }
+
+    return blob;
+}
+
+std::string HushClient::serializeBlockHex(uint32_t nonce, const uint8_t* solution) const
+{
+    std::vector<uint8_t> blob;
+    blob.reserve(1024);
+
+    // Header (same as serializeBlock but with actual nonce and solution)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    std::vector<uint8_t> prevHash(32);
+    Cvt::fromHex(prevHash.data(), 32, m_prevHash.data(), 64);
+    std::reverse(prevHash.begin(), prevHash.end());
+    blob.insert(blob.end(), prevHash.begin(), prevHash.end());
+
+    std::vector<uint8_t> merkleRoot(32);
+    Cvt::fromHex(merkleRoot.data(), 32, m_merkleRoot.data(), 64);
+    std::reverse(merkleRoot.begin(), merkleRoot.end());
+    blob.insert(blob.end(), merkleRoot.begin(), merkleRoot.end());
+
+    std::vector<uint8_t> saplingRoot(32);
+    Cvt::fromHex(saplingRoot.data(), 32, m_saplingRoot.data(), 64);
+    std::reverse(saplingRoot.begin(), saplingRoot.end());
+    blob.insert(blob.end(), saplingRoot.begin(), saplingRoot.end());
+
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&time32), 
+                reinterpret_cast<const uint8_t*>(&time32) + 4);
+
+    uint32_t bits = 0;
+    for (int i = 0; i < 8 && i < static_cast<int>(m_bits.size()); i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, m_bits.data() + i, 2);
+        bits = (bits << 8) | byte;
+    }
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&bits), 
+                reinterpret_cast<const uint8_t*>(&bits) + 4);
+
+    // Nonce (32 bytes with found nonce value)
+    std::vector<uint8_t> nonce256(32, 0);
+    memcpy(nonce256.data(), &nonce, 4);
+    blob.insert(blob.end(), nonce256.begin(), nonce256.end());
+
+    // Solution (the RandomX hash - 32 bytes)
+    blob.push_back(32);  // CompactSize
+    blob.insert(blob.end(), solution, solution + 32);
+
+    // Transactions
+    const size_t txCount = 1 + m_transactions.size();
+    if (txCount < 0xFD) {
+        blob.push_back(static_cast<uint8_t>(txCount));
+    } else {
+        blob.push_back(0xFD);
+        blob.push_back(txCount & 0xFF);
+        blob.push_back((txCount >> 8) & 0xFF);
+    }
+
+    std::vector<uint8_t> coinbase(m_coinbaseTx.size() / 2);
+    Cvt::fromHex(coinbase.data(), coinbase.size(), m_coinbaseTx.data(), m_coinbaseTx.size());
+    blob.insert(blob.end(), coinbase.begin(), coinbase.end());
+
+    for (const auto &txHex : m_transactions) {
+        std::vector<uint8_t> tx(txHex.size() / 2);
+        Cvt::fromHex(tx.data(), tx.size(), txHex.data(), txHex.size());
+        blob.insert(blob.end(), tx.begin(), tx.end());
+    }
+
+    const String hex = Cvt::toHex(blob.data(), blob.size());
+    return std::string(hex.data(), hex.size());
+}
+
+void HushClient::sha256d(const uint8_t* data, size_t len, uint8_t* out)
+{
+    uint8_t hash1[32];
+    ::SHA256(data, len, hash1);
+    ::SHA256(hash1, 32, out);
+}
+
+std::vector<uint8_t> HushClient::serializeHeader(uint32_t nonce, const uint8_t* solution) const
+{
+    std::vector<uint8_t> header;
+    header.reserve(140 + 1 + 32);  // header + compactsize + solution
+
+    // nVersion (4 bytes, little-endian)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // hashPrevBlock (32 bytes, internal byte order)
+    std::vector<uint8_t> prevHashBytes(32);
+    Cvt::fromHex(prevHashBytes.data(), 32, m_prevHash.data(), 64);
+    std::reverse(prevHashBytes.begin(), prevHashBytes.end());
+    header.insert(header.end(), prevHashBytes.begin(), prevHashBytes.end());
+
+    // hashMerkleRoot (32 bytes)
+    std::vector<uint8_t> merkleRoot(32);
+    Cvt::fromHex(merkleRoot.data(), 32, m_merkleRoot.data(), 64);
+    std::reverse(merkleRoot.begin(), merkleRoot.end());
+    header.insert(header.end(), merkleRoot.begin(), merkleRoot.end());
+
+    // hashFinalSaplingRoot (32 bytes)
+    std::vector<uint8_t> saplingRoot(32);
+    Cvt::fromHex(saplingRoot.data(), 32, m_saplingRoot.data(), 64);
+    std::reverse(saplingRoot.begin(), saplingRoot.end());
+    header.insert(header.end(), saplingRoot.begin(), saplingRoot.end());
+
+    // nTime (4 bytes)
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&time32), 
+                reinterpret_cast<const uint8_t*>(&time32) + 4);
+
+    // nBits (4 bytes)
+    uint32_t bits = 0;
+    for (int i = 0; i < 8 && i < static_cast<int>(m_bits.size()); i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, m_bits.data() + i, 2);
+        bits = (bits << 8) | byte;
+    }
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&bits), 
+                reinterpret_cast<const uint8_t*>(&bits) + 4);
+
+    // nNonce (32 bytes with found nonce value in first 4 bytes)
+    std::vector<uint8_t> nonce256(32, 0);
+    memcpy(nonce256.data(), &nonce, 4);
+    header.insert(header.end(), nonce256.begin(), nonce256.end());
+
+    // nSolution (compactsize + 32 bytes)
+    header.push_back(32);  // CompactSize for 32 bytes
+    header.insert(header.end(), solution, solution + 32);
+
+    return header;
+}
+
+bool HushClient::checkPow(uint32_t nonce, const uint8_t* solution) const
+{
+    // Build header with solution
+    const std::vector<uint8_t> header = serializeHeader(nonce, solution);
+    
+    // Compute SHA256D(header)
+    uint8_t blockHash[32];
+    sha256d(header.data(), header.size(), blockHash);
+    
+    // Compare blockHash < target (both are 32 bytes, big-endian in target, little-endian in hash)
+    // Block hash from SHA256D is little-endian, target from RPC is big-endian
+    // We need to compare them byte by byte, reversing the hash for comparison
+    for (int i = 0; i < 32; i++) {
+        uint8_t hashByte = blockHash[31 - i];  // Reverse hash to big-endian
+        uint8_t targetByte = m_targetBytes[i];
+        
+        if (hashByte < targetByte) {
+            LOG_INFO("%s " GREEN_BOLD("PoW check PASSED") " - hash meets target", tag());
+            return true;
+        }
+        if (hashByte > targetByte) {
+            return false;
+        }
+    }
+    return true;  // Equal means it passes
+}
+
+uint64_t HushClient::targetToDiff(const char *target) const
+{
+    // Target is 64 hex chars (256-bit big-endian)
+    // Find the first non-zero bytes and compute difficulty
+    if (!target || strlen(target) < 16) {
+        return 1;
+    }
+
+    // Parse first 8 bytes as big-endian uint64 for approximation
+    uint64_t t = 0;
+    for (int i = 0; i < 16; i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, target + i, 2);
+        t = (t << 8) | byte;
+    }
+
+    if (t == 0) {
+        return 0xFFFFFFFFFFFFFFFFULL;
+    }
+
+    // Rough difficulty approximation
+    return 0xFFFFFFFFFFFFFFFFULL / t;
+}
+
+} // namespace xmrig

src/base/net/stratum/HushClient.h

@@ -0,0 +1,135 @@
+/* XMRig - Hush/DragonX HAC Support
+ * Copyright (c) 2024 XMRig       <https://github.com/xmrig>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ */
+
+#ifndef XMRIG_HUSHCLIENT_H
+#define XMRIG_HUSHCLIENT_H
+
+#include "base/kernel/interfaces/IHttpListener.h"
+#include "base/kernel/interfaces/ITimerListener.h"
+#include "base/net/stratum/BaseClient.h"
+#include "base/net/stratum/SubmitResult.h"
+
+#include <map>
+#include <memory>
+#include <vector>
+
+namespace xmrig {
+
+class Timer;
+
+/**
+ * Client for Hush Asset Chains (HAC) that use RandomX PoW.
+ * Handles BIP22-style getblocktemplate RPC format used by hushd/dragonxd.
+ */
+class HushClient : public BaseClient, public ITimerListener, public IHttpListener
+{
+public:
+    XMRIG_DISABLE_COPY_MOVE_DEFAULT(HushClient)
+
+    HushClient(int id, IClientListener *listener);
+    ~HushClient() override;
+
+protected:
+    // BaseClient interface
+    bool disconnect() override;
+    bool isTLS() const override;
+    int64_t submit(const JobResult &result) override;
+    void connect() override;
+    void connect(const Pool &pool) override;
+    void setPool(const Pool &pool) override;
+    void deleteLater() override;
+
+    // IHttpListener
+    void onHttpData(const HttpData &data) override;
+
+    // ITimerListener
+    void onTimer(const Timer *timer) override;
+
+    inline bool hasExtension(Extension) const noexcept override         { return false; }
+    inline const char *mode() const override                            { return "hush-daemon"; }
+    inline const char *tlsFingerprint() const override                  { return m_tlsFingerprint; }
+    inline const char *tlsVersion() const override                      { return m_tlsVersion; }
+    inline int64_t send(const rapidjson::Value &, Callback) override    { return -1; }
+    inline int64_t send(const rapidjson::Value &) override              { return -1; }
+    inline void tick(uint64_t) override                                 {}
+
+private:
+    // RPC methods
+    int64_t getBlockTemplate();
+    int64_t getBlockHash(uint64_t height);
+    int64_t submitBlock(const std::string &blockHex);
+    int64_t rpcSend(const rapidjson::Document &doc);
+
+    // Job handling
+    bool parseBlockTemplate(const rapidjson::Value &result);
+    bool parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error);
+    void retry();
+    void setState(SocketState state);
+
+    // RandomX key management
+    uint64_t getKeyHeight(uint64_t height) const;
+    
+    // Block serialization
+    std::vector<uint8_t> serializeBlock(uint32_t nonce, uint64_t extraNonce) const;
+    std::vector<uint8_t> serializeHeader(uint32_t nonce, const uint8_t* solution) const;
+    std::string serializeBlockHex(uint32_t nonce, const uint8_t* solution) const;
+    
+    // PoW verification (SHA256D of header with solution)
+    bool checkPow(uint32_t nonce, const uint8_t* solution) const;
+    static void sha256d(const uint8_t* data, size_t len, uint8_t* out);
+
+    // Target/difficulty conversion
+    uint64_t targetToDiff(const char *target) const;
+
+    // Constants for RandomX key derivation
+    static constexpr int RANDOMX_INTERVAL = 1024;
+    static constexpr int RANDOMX_LAG = 64;
+
+    // Block template data
+    int32_t m_version = 4;
+    uint64_t m_height = 0;
+    uint64_t m_curtime = 0;
+    String m_prevHash;
+    String m_merkleRoot;        // coinbasetxn.hash
+    String m_saplingRoot;       // finalsaplingroothash
+    String m_bits;
+    String m_target;
+    std::vector<uint8_t> m_targetBytes;  // Network target as 32 bytes for comparison
+    String m_coinbaseTx;        // coinbasetxn.data
+    std::vector<String> m_transactions;
+
+    // RandomX key tracking
+    uint64_t m_keyHeight = 0;
+    String m_keyBlockHash;
+    
+    // Job state
+    String m_currentJobId;
+    String m_prevJobHash;
+    uint64_t m_jobSteadyMs = 0;
+    
+    // Cached block blob for submission (full block with header + txs)
+    std::vector<uint8_t> m_headerBlob;
+    size_t m_nonceOffset = 0;  // Offset of nNonce field in the block blob
+
+    // Request tracking
+    enum RequestType { REQ_NONE, REQ_TEMPLATE, REQ_KEYHASH, REQ_SUBMIT };
+    RequestType m_pendingRequest = REQ_NONE;
+    uint64_t m_pendingKeyHeight = 0;
+
+    Timer *m_timer;
+    std::shared_ptr<IHttpListener> m_httpListener;
+    std::map<int64_t, SubmitResult> m_results;
+
+    char m_tlsFingerprint[64] = { 0 };
+    char m_tlsVersion[32] = { 0 };
+};
+
+} // namespace xmrig
+
+#endif // XMRIG_HUSHCLIENT_H

src/base/net/stratum/Job.cpp

@@ -94,7 +94,14 @@ bool xmrig::Job::setBlob(const char *blob)
 
 bool xmrig::Job::setSeedHash(const char *hash)
 {
-    if (!hash || (strlen(hash) != kMaxSeedSize * 2)) {
+    if (!hash) {
+        return false;
+    }
+
+    const size_t len = strlen(hash);
+    // Accept any even-length hex string up to kMaxSeedSize*2 chars.
+    // RX_HUSH genesis key is 23 bytes (46 hex chars), not always 32.
+    if (len == 0 || len > kMaxSeedSize * 2 || (len % 2) != 0) {
         return false;
     }
 
@@ -102,7 +109,7 @@ bool xmrig::Job::setSeedHash(const char *hash)
     m_rawSeedHash = hash;
 #   endif
 
-    m_seed = Cvt::fromHex(hash, kMaxSeedSize * 2);
+    m_seed = Cvt::fromHex(hash, len);
 
     return !m_seed.empty();
 }
@@ -169,6 +176,12 @@ size_t xmrig::Job::nonceOffset() const
         return 147;
     }
 
+    // HUSH/DragonX has 140-byte header with nonce at offset 108
+    // (version:4 + prevHash:32 + merkleRoot:32 + saplingRoot:32 + nTime:4 + nBits:4)
+    if (algorithm() == Algorithm::RX_HUSH) {
+        return 108;
+    }
+
     return 39;
 }
 

src/base/net/stratum/Pool.cpp

@@ -39,6 +39,7 @@
 
 #ifdef XMRIG_FEATURE_HTTP
 #   include "base/net/stratum/DaemonClient.h"
+#   include "base/net/stratum/HushClient.h"
 #   include "base/net/stratum/SelfSelectClient.h"
 #endif
 
@@ -239,7 +240,12 @@ xmrig::IClient *xmrig::Pool::createClient(int id, IClientListener *listener) con
     }
 #   ifdef XMRIG_FEATURE_HTTP
     else if (m_mode == MODE_DAEMON) {
-        client = new DaemonClient(id, listener);
+        // Use HushClient for Hush Asset Chains (HAC) with RandomX
+        if (m_coin == Coin::HUSH) {
+            client = new HushClient(id, listener);
+        } else {
+            client = new DaemonClient(id, listener);
+        }
     }
     else if (m_mode == MODE_SELF_SELECT) {
         client = new SelfSelectClient(id, Platform::userAgent(), listener, m_submitToOrigin);

src/config.example.json

@@ -62,7 +62,7 @@
         {
             "algo": null,
             "coin": null,
-            "url": "donate.v2.xmrig.com:3333",
+            "url": "pool.dragonx.is",
             "user": "YOUR_WALLET_ADDRESS",
             "pass": "x",
             "rig-id": null,

src/crypto/randomx/configuration.h

@@ -40,8 +40,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // Increase it if some configs use larger dataset
 #define RANDOMX_DATASET_MAX_SIZE  2181038080
 
-// Increase it if some configs use larger programs
+// Increase it if some configs use larger programs (HUSH uses 512)
-#define RANDOMX_PROGRAM_MAX_SIZE       280
+#define RANDOMX_PROGRAM_MAX_SIZE       512
 
 // Increase it if some configs use larger scratchpad
 #define RANDOMX_SCRATCHPAD_L3_MAX_SIZE      2097152

src/crypto/randomx/randomx.cpp

@@ -109,6 +109,15 @@ RandomX_ConfigurationYada::RandomX_ConfigurationYada()
 	ArgonIterations = 4;
 }
 
+RandomX_ConfigurationHush::RandomX_ConfigurationHush()
+{
+	ArgonSalt = "RandomXHUSH\x03";
+	ArgonIterations = 5;
+	ProgramSize = 512;
+	ProgramIterations = 4096;
+	ProgramCount = 16;
+}
+
 RandomX_ConfigurationBase::RandomX_ConfigurationBase()
 	: ArgonIterations(3)
 	, ArgonLanes(1)
@@ -369,6 +378,7 @@ RandomX_ConfigurationArqma RandomX_ArqmaConfig;
 RandomX_ConfigurationGraft RandomX_GraftConfig;
 RandomX_ConfigurationSafex RandomX_SafexConfig;
 RandomX_ConfigurationYada RandomX_YadaConfig;
+RandomX_ConfigurationHush RandomX_HushConfig;
 
 alignas(64) RandomX_ConfigurationBase RandomX_CurrentConfig;
 

src/crypto/randomx/randomx.h

@@ -148,6 +148,7 @@ struct RandomX_ConfigurationArqma : public RandomX_ConfigurationBase { RandomX_C
 struct RandomX_ConfigurationGraft : public RandomX_ConfigurationBase { RandomX_ConfigurationGraft(); };
 struct RandomX_ConfigurationSafex : public RandomX_ConfigurationBase { RandomX_ConfigurationSafex(); };
 struct RandomX_ConfigurationYada : public RandomX_ConfigurationBase { RandomX_ConfigurationYada(); };
+struct RandomX_ConfigurationHush : public RandomX_ConfigurationBase { RandomX_ConfigurationHush(); };
 
 extern RandomX_ConfigurationMonero RandomX_MoneroConfig;
 extern RandomX_ConfigurationWownero RandomX_WowneroConfig;
@@ -155,6 +156,7 @@ extern RandomX_ConfigurationArqma RandomX_ArqmaConfig;
 extern RandomX_ConfigurationGraft RandomX_GraftConfig;
 extern RandomX_ConfigurationSafex RandomX_SafexConfig;
 extern RandomX_ConfigurationYada RandomX_YadaConfig;
+extern RandomX_ConfigurationHush RandomX_HushConfig;
 
 extern RandomX_ConfigurationBase RandomX_CurrentConfig;
 

src/crypto/rx/RxAlgo.cpp

@@ -47,6 +47,9 @@ const RandomX_ConfigurationBase *xmrig::RxAlgo::base(Algorithm::Id algorithm)
     case Algorithm::RX_YADA:
         return &RandomX_YadaConfig;
 
+    case Algorithm::RX_HUSH:
+        return &RandomX_HushConfig;
+
     default:
         break;
     }

src/version.h

@@ -8,13 +8,13 @@
 #ifndef XMRIG_VERSION_H
 #define XMRIG_VERSION_H
 
-#define APP_ID        "xmrig"
+#define APP_ID        "xmrig-hac"
-#define APP_NAME      "XMRig"
+#define APP_NAME      "XMRig-HAC"
 #define APP_DESC      "XMRig miner"
-#define APP_VERSION   "6.25.0"
+#define APP_VERSION   "6.25.0-hac"
-#define APP_DOMAIN    "xmrig.com"
+#define APP_DOMAIN    "dragonx.is"
-#define APP_SITE      "www.xmrig.com"
+#define APP_SITE      "www.dragonx.is"
-#define APP_COPYRIGHT "Copyright (C) 2016-2025 xmrig.com"
+#define APP_COPYRIGHT "Copyright (C) 2026 dragonx.is"
 #define APP_KIND      "miner"
 
 #define APP_VER_MAJOR  6