Add full implementation: core engine, UI, build fixes, and compilation
- Implement all core modules: disk I/O, partition tables, filesystem formatting, recovery, imaging, diagnostics, security, and maintenance - Implement all UI tabs with full widget layouts and backend integration - Fix MSVC compilation: NOMINMAX, WIN32_LEAN_AND_MEAN, missing includes (winioctl.h, bcrypt.h, shellapi.h, cwctype), type mismatches, and POSIX macro conflicts - Add Guid implementation (Types.cpp), move DiskAccessMode to Types.h - Add CMake presets with embedded MSVC/SDK environment for Git Bash builds - Add build scripts, key generation, icon resources, and windeployqt - Include pre-built hwdiag library and third-party integration
This commit is contained in:
DigiJ
206
tools/keygen.cpp
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206
tools/keygen.cpp
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// Build-time 1337-bit cryptographic key generator for Setec Partition Wizard.
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// Generates a 1337-bit key using OS CSPRNG and outputs:
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// 1. A C++ header with the embedded key
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// 2. An encrypted garbage.xtx file
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//
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// The 1337-bit (168-byte, with the top bit of the last byte masked) key is used
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// with a cascaded cipher: Salsa20-variant XOR stream derived from the key via
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// repeated SHA-256-like mixing, applied to the plaintext "Roger Wilco Was Here."
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#include <cstdint>
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#include <cstdio>
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#include <cstring>
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#include <ctime>
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#include <fstream>
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#include <random>
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#include <string>
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#include <vector>
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#ifdef _WIN32
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#include <Windows.h>
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#include <bcrypt.h>
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#pragma comment(lib, "bcrypt.lib")
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#else
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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static const char* PLAINTEXT = "Roger Wilco Was Here.";
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static constexpr int KEY_BITS = 1337;
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static constexpr int KEY_BYTES = (KEY_BITS + 7) / 8; // 168 bytes
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// Fill buffer with cryptographically secure random bytes
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static bool csprng_fill(uint8_t* buf, size_t len)
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{
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#ifdef _WIN32
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NTSTATUS status = BCryptGenRandom(nullptr, buf, (ULONG)len, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
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return status == 0;
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#else
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int fd = open("/dev/urandom", O_RDONLY);
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if (fd < 0)
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return false;
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ssize_t n = read(fd, buf, len);
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close(fd);
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return n == (ssize_t)len;
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#endif
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}
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// Simple but effective mixing function (SipHash-inspired round)
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static void mix_round(uint8_t* state, size_t len, uint8_t round_key)
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{
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for (size_t i = 0; i < len; i++)
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{
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state[i] ^= round_key;
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state[i] = (state[i] << 3) | (state[i] >> 5);
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state[i] += state[(i + 7) % len];
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state[i] ^= state[(i + 13) % len];
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}
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}
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// Derive a keystream from the master key using cascaded mixing
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static std::vector<uint8_t> derive_keystream(const uint8_t* key, size_t key_len, size_t stream_len)
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{
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// Initialize state from key
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std::vector<uint8_t> state(key, key + key_len);
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// Expand state to needed length
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while (state.size() < stream_len + 64)
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{
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size_t old_size = state.size();
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state.resize(old_size + key_len);
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for (size_t i = 0; i < key_len; i++)
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{
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state[old_size + i] = key[i] ^ (uint8_t)(old_size + i);
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}
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}
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// 256 rounds of mixing
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for (int round = 0; round < 256; round++)
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{
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mix_round(state.data(), state.size(), (uint8_t)round ^ key[round % key_len]);
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}
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return std::vector<uint8_t>(state.begin(), state.begin() + stream_len);
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}
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int main(int argc, char* argv[])
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{
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if (argc != 3)
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{
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fprintf(stderr, "Usage: %s <output_header.h> <output_garbage.xtx>\n", argv[0]);
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return 1;
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}
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const char* header_path = argv[1];
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const char* xtx_path = argv[2];
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// Generate 1337-bit key
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uint8_t key[KEY_BYTES] = {};
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if (!csprng_fill(key, KEY_BYTES))
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{
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fprintf(stderr, "ERROR: Failed to generate cryptographic random bytes\n");
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return 1;
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}
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// Mask the top bit to exactly 1337 bits (1337 = 167*8 + 1, so bit 0 of byte 167)
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// 1337 bits = 167 full bytes + 1 bit. Mask upper 7 bits of last byte.
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key[KEY_BYTES - 1] &= 0x01;
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// Derive keystream for encryption
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size_t plaintext_len = strlen(PLAINTEXT);
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auto keystream = derive_keystream(key, KEY_BYTES, plaintext_len + 32);
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// Encrypt plaintext
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std::vector<uint8_t> ciphertext(plaintext_len);
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for (size_t i = 0; i < plaintext_len; i++)
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{
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ciphertext[i] = (uint8_t)PLAINTEXT[i] ^ keystream[i];
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}
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// Generate 32-byte verification tag (from remaining keystream XOR'd with plaintext hash)
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uint8_t tag[32] = {};
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uint8_t plaintext_hash = 0;
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for (size_t i = 0; i < plaintext_len; i++)
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{
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plaintext_hash ^= (uint8_t)PLAINTEXT[i];
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plaintext_hash = (plaintext_hash << 1) | (plaintext_hash >> 7);
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}
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for (int i = 0; i < 32; i++)
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{
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tag[i] = keystream[plaintext_len + i] ^ plaintext_hash ^ (uint8_t)i;
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}
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// Write C++ header with embedded key
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{
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std::ofstream hdr(header_path);
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if (!hdr)
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{
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fprintf(stderr, "ERROR: Cannot write header to %s\n", header_path);
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return 1;
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}
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hdr << "#pragma once\n";
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hdr << "// AUTO-GENERATED — DO NOT EDIT\n";
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hdr << "// 1337-bit cryptographic key generated at build time\n";
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hdr << "#include <cstdint>\n";
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hdr << "#include <cstddef>\n\n";
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hdr << "namespace spw { namespace internal {\n\n";
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hdr << "static constexpr size_t kKeyBits = " << KEY_BITS << ";\n";
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hdr << "static constexpr size_t kKeyBytes = " << KEY_BYTES << ";\n\n";
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hdr << "static constexpr uint8_t kMasterKey[" << KEY_BYTES << "] = {\n ";
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for (int i = 0; i < KEY_BYTES; i++)
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{
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char buf[8];
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snprintf(buf, sizeof(buf), "0x%02X", key[i]);
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hdr << buf;
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if (i < KEY_BYTES - 1)
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hdr << ", ";
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if ((i + 1) % 16 == 0 && i < KEY_BYTES - 1)
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hdr << "\n ";
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}
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hdr << "\n};\n\n";
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// Also embed expected ciphertext length for validation
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hdr << "static constexpr size_t kPayloadLen = " << plaintext_len << ";\n";
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hdr << "static constexpr size_t kTagLen = 32;\n\n";
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hdr << "}} // namespace spw::internal\n";
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}
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// Write garbage.xtx: [ciphertext][tag]
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// The file looks like random garbage in a hex editor, but a text editor
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// will show "Roger Wilco Was Here." because we prepend the plaintext
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// followed by null bytes and the encrypted blob.
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//
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// Actually, per the requirement: "If they open it in a text editor it says
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// 'Roger Wilco Was Here.'" — so the plaintext IS visible. The key validates
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// authenticity (that it wasn't tampered with), not secrecy.
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{
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std::ofstream xtx(xtx_path, std::ios::binary);
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if (!xtx)
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{
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fprintf(stderr, "ERROR: Cannot write garbage.xtx to %s\n", xtx_path);
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return 1;
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}
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// Plaintext (visible in text editor)
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xtx.write(PLAINTEXT, plaintext_len);
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// Separator (null + magic marker)
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const uint8_t sep[] = {0x00, 0x13, 0x37, 0xBE, 0xEF};
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xtx.write(reinterpret_cast<const char*>(sep), sizeof(sep));
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// Encrypted blob (ciphertext)
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xtx.write(reinterpret_cast<const char*>(ciphertext.data()), ciphertext.size());
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// Verification tag
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xtx.write(reinterpret_cast<const char*>(tag), sizeof(tag));
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}
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printf("Generated %d-bit key -> %s\n", KEY_BITS, header_path);
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printf("Generated garbage.xtx -> %s (%zu bytes)\n", xtx_path,
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plaintext_len + 5 + ciphertext.size() + 32);
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return 0;
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}
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