ObsidianDragon - DragonX ImGui Wallet

Full-node GUI wallet for DragonX cryptocurrency.
Built with Dear ImGui, SDL3, and OpenGL3/DX11.

Features:
- Send/receive shielded and transparent transactions
- Autoshield with merged transaction display
- Built-in CPU mining (xmrig)
- Peer management and network monitoring
- Wallet encryption with PIN lock
- QR code generation for receive addresses
- Transaction history with pagination
- Console for direct RPC commands
- Cross-platform (Linux, Windows)

src/util/base64.h

@@ -0,0 +1,53 @@
+// DragonX Wallet - ImGui Edition
+// Copyright 2024-2026 The Hush Developers
+// Released under the GPLv3
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include <cstdint>
+
+namespace dragonx {
+namespace util {
+
+/**
+ * @brief Base64 encoding/decoding utilities
+ */
+
+/**
+ * @brief Encode binary data to base64 string
+ * @param data Input data
+ * @param len Length of input data
+ * @return Base64 encoded string
+ */
+std::string base64_encode(const unsigned char* data, size_t len);
+
+/**
+ * @brief Encode string to base64
+ * @param input Input string
+ * @return Base64 encoded string
+ */
+inline std::string base64_encode(const std::string& input) {
+    return base64_encode(reinterpret_cast<const unsigned char*>(input.data()), input.size());
+}
+
+/**
+ * @brief Decode base64 string to binary data
+ * @param encoded Base64 encoded string
+ * @return Decoded binary data
+ */
+std::vector<unsigned char> base64_decode(const std::string& encoded);
+
+/**
+ * @brief Decode base64 string to string
+ * @param encoded Base64 encoded string
+ * @return Decoded string
+ */
+inline std::string base64_decode_string(const std::string& encoded) {
+    auto decoded = base64_decode(encoded);
+    return std::string(decoded.begin(), decoded.end());
+}
+
+} // namespace util
+} // namespace dragonx