Merge pull request #120 from UMSKT/nodashes-cmd

Command line argument to remove dashes from product key

.github/workflows/dos-djgpp.yml

@@ -64,8 +64,8 @@ jobs:
           git clone https://github.com/UMSKT/openssl.git openssl
           pushd openssl
           source ${{ github.workspace }}/djgpp/setenv
-          ./Configure no-threads -DOPENSSL_DEV_NO_ATOMICS --prefix=${{ github.workspace }}/djgpp DJGPP
+          ./Configure 386 no-threads no-tests no-sse2 no-asm -DOPENSSL_DEV_NO_ATOMICS -mno-mmx -mno-sse -mno-sse2 -march=i386 --prefix=${{ github.workspace }}/djgpp DJGPP
-          make && make install
+          make && make install_sw
           popd
 
       - name: Build

CMakeLists.txt

@@ -70,6 +70,11 @@ IF(DJGPP_WATT32)
     SET(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
     SET(UMSKT_LINK_LIBS ${UMSKT_LINK_LIBS} ${DJGPP_WATT32})
     SET(UMSKT_LINK_DIRS ${UMSKT_LINK_DIRS} ${WATT_ROOT}/lib)
+    
+    # Maximum compatibility flags for DOS/NTVDM
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=i386 -mtune=i386 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow -mno-ssse3 -mno-sse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 -mno-avx -mno-avx2 -mno-fma -mno-fma4")
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=i386 -mtune=i386 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow -mno-ssse3 -mno-sse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 -mno-avx -mno-avx2 -mno-fma -mno-fma4")
+    MESSAGE(STATUS "[UMSKT] Using i386 target for DOS DGJPP")
 ENDIF()
 
 if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

src/cli.cpp

@@ -71,7 +71,8 @@ void CLI::showHelp(char *argv[]) {
     fmt::print("\t-u --upgrade\tspecifies the Product Key will be an \"Upgrade\" version\n");
     fmt::print("\t-V --validate\tproduct key to validate signature\n");
     fmt::print("\t-N --nonewlines\tdisables newlines (for easier embedding in other apps)\n");
-    fmt::print("\t-o --override\tDisables version check for confirmation ID's, if you need this send an issue on GitHub");
+    fmt::print("\t-o --override\tDisables version check for confirmation IDs, if you need this send an issue on GitHub\n");
+    fmt::print("\t-D --nodashes\tDisables dashes in product keys and confirmation IDs (for easier copy-pasting)");
     fmt::print("\n");
 }
 
@@ -94,6 +95,7 @@ int CLI::parseCommandLine(int argc, char* argv[], Options* options) {
             false,
 	    false,
 	    false,
+	    false,
             MODE_BINK1998_GENERATE,
             WINDOWS
     };
@@ -214,6 +216,8 @@ int CLI::parseCommandLine(int argc, char* argv[], Options* options) {
 	    options->nonewlines = true;
 	} else if (arg == "-o" || arg == "--override") {
 	    options->overrideVersion = true;
+	} else if (arg == "-D" || arg == "--nodashes") {
+	    options->nodashes = true;
 	} else {
             options->error = true;
         }
@@ -327,9 +331,14 @@ void CLI::printID(DWORD *pid) {
 
 void CLI::printKey(char *pk) {
     assert(strlen(pk) >= PK_LENGTH);
+    std::string keyFormat = "{}-{}-{}-{}-{}";
+	
+    if (this->options.nodashes == true) {
+	keyFormat = "{}{}{}{}{}";
+    }
 	
     std::string spk = pk;
-    fmt::print("{}-{}-{}-{}-{}",
+    fmt::print(keyFormat,
                spk.substr(0,5),
                spk.substr(5,5),
                spk.substr(10,5),
@@ -423,7 +432,7 @@ int CLI::BINK1998Generate() {
     } else {
         // generate a random number to use as a serial
         BIGNUM *bnrand = BN_new();
-        BN_rand(bnrand, 19, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
+        UMSKT::umskt_bn_rand(bnrand, 19, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
 
         int oRaw;
         char *cRaw = BN_bn2dec(bnrand);
@@ -484,7 +493,7 @@ int CLI::BINK2002Generate() {
     // generate a key
     for (int i = 0; i < this->total; i++) {
         DWORD pAuthInfo;
-        RAND_bytes((BYTE *)&pAuthInfo, 4);
+        UMSKT::umskt_rand_bytes((BYTE *)&pAuthInfo, 4);
         pAuthInfo &= BITMASK(10);
 
         if (this->options.verbose) {
@@ -591,7 +600,17 @@ int CLI::ConfirmationID() {
             return 1;
 
         case SUCCESS:
+	    if (this->options.nodashes == true) {
+		int j = 0;
+		for (int i = 0; confirmation_id[i] != '\0'; ++i) {
+		    if (confirmation_id[i] != '-') {
+			confirmation_id[j++] = confirmation_id[i];
+		    }
+		}
+		confirmation_id[j] = '\0';
+	    }
 	    fmt::print(confirmation_id);
+
     	    if (this->options.nonewlines == false) {
 	        fmt::print("\n"); 
     	    }

src/cli.h

@@ -69,6 +69,7 @@ struct Options {
     bool list;
     bool nonewlines;
     bool overrideVersion;
+    bool nodashes;
 
     MODE applicationMode;
     ACTIVATION_ALGORITHM activationMode;
@@ -93,7 +94,7 @@ public:
     static int parseCommandLine(int argc, char* argv[], Options *options);
     static int validateCommandLine(Options* options, char *argv[], json *keys);
     static void printID(DWORD *pid);
-    static void printKey(char *pk);
+    void printKey(char *pk);
     static bool stripKey(const char *in_key, char out_key[PK_LENGTH]);
 
     int BINK1998Generate();

src/libumskt/libumskt.cpp

@@ -58,3 +58,78 @@ FNEXPORT int PIDGEN2_GenerateRetail(char* channelID, char* &keyout) {
 FNEXPORT int PIDGEN2_GenerateOEM(char* year, char* day, char* oem, char* keyout) {
     return PIDGEN2::GenerateOEM(year, day, oem, keyout);
 }
+
+// RNG utility functions
+int UMSKT::umskt_rand_bytes(unsigned char *buf, int num) {
+#if UMSKT_RNG_DJGPP
+    // DOS-compatible RNG using DJGPP's random() function
+    static bool initialized = false;
+    if (!initialized) {
+        // Get initial seed from multiple sources for better entropy
+        struct timeval tv;
+        gettimeofday(&tv, NULL);
+        
+        // Combine microseconds with BIOS timer ticks
+        unsigned long ticks = *(volatile unsigned long *)0x0040001CL;
+        int seed = (int)((tv.tv_sec ^ tv.tv_usec) ^ (ticks * 100000));
+        
+        // Initialize both random() and rand() with different seeds
+        srandom(seed);
+        srand(seed ^ 0x1234ABCD); // Use a different seed for rand
+        
+        initialized = true;
+    }
+    
+    for (int i = 0; i < num; i++) {
+        // Use random() for better randomness, especially in lower bits
+        buf[i] = (unsigned char)(random() & 0xFF);
+        
+        // Mix in rand() as an additional source
+        buf[i] ^= (unsigned char)(rand() & 0xFF);
+    }
+    return 1;
+#else
+    // Use OpenSSL's RAND_bytes for non-DOS systems
+    return RAND_bytes(buf, num);
+#endif
+}
+
+int UMSKT::umskt_bn_rand(BIGNUM *rnd, int bits, int top, int bottom) {
+#if UMSKT_RNG_DJGPP
+    // DOS-compatible RNG implementation for BIGNUMs
+    unsigned char *buf = (unsigned char *)malloc((bits + 7) / 8);
+    if (!buf) return 0;
+    
+    // Generate random bytes
+    umskt_rand_bytes(buf, (bits + 7) / 8);
+    
+    // Convert to BIGNUM
+    if (!BN_bin2bn(buf, (bits + 7) / 8, rnd)) {
+        free(buf);
+        return 0;
+    }
+    
+    free(buf);
+    
+    // Apply top/bottom constraints like BN_rand does
+    if (top != -1) {
+        if (top) {
+            if (bits == 0) {
+                BN_zero(rnd);
+                return 1;
+            }
+            BN_set_bit(rnd, bits - 1);
+        }
+        BN_mask_bits(rnd, bits);
+    }
+    
+    if (bottom) {
+        BN_set_bit(rnd, 0);
+    }
+    
+    return 1;
+#else
+    // Use OpenSSL's BN_rand for non-DOS systems
+    return BN_rand(rnd, bits, top, bottom);
+#endif
+}

src/libumskt/libumskt.h

@@ -38,6 +38,10 @@
 #include <fmt/core.h>
 #include <fmt/format.h>
 
+#ifdef __DJGPP__
+#include <sys/time.h>
+#endif
+
 // Algorithm macros
 #define PK_LENGTH               25
 #define NULL_TERMINATOR         1
@@ -59,6 +63,17 @@
 #define BYDWORD(n)                     (DWORD)(*((n) + 0) | *((n) + 1) << 8 | *((n) + 2) << 16 | *((n) + 3) << 24)
 #define BITMASK(n)                     ((1ULL << (n)) - 1)
 
+// RNG utility functions
+#ifdef __DJGPP__
+#define UMSKT_RNG_DJGPP 1
+extern "C" {
+    long int random(void);
+    int srandom(int seed);
+}
+#else
+#define UMSKT_RNG_DJGPP 0
+#endif
+
 class UMSKT {
 public:
     static std::FILE* debug;
@@ -67,7 +82,10 @@ public:
     class ConfigurationID;
 
     static void setDebugOutput(std::FILE* input);
+
+    // RNG utility functions
+    static int umskt_rand_bytes(unsigned char *buf, int num);
+    static int umskt_bn_rand(BIGNUM *rnd, int bits, int top, int bottom);
 };
 
-
 #endif //UMSKT_LIBUMSKT_H

src/libumskt/pidgen3/BINK1998.cpp

@@ -201,7 +201,7 @@ void PIDGEN3::BINK1998::Generate(
         EC_POINT *r = EC_POINT_new(eCurve);
 
         // Generate a random number c consisting of 384 bits without any constraints.
-        BN_rand(c, FIELD_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
+        UMSKT::umskt_bn_rand(c, FIELD_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
 
         // Pick a random derivative of the base point on the elliptic curve.
         // R = cG;

src/libumskt/pidgen3/BINK2002.cpp

@@ -236,7 +236,7 @@ void PIDGEN3::BINK2002::Generate(
         EC_POINT *r = EC_POINT_new(eCurve);
 
         // Generate a random number c consisting of 512 bits without any constraints.
-        BN_rand(c, FIELD_BITS_2003, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
+        UMSKT::umskt_bn_rand(c, FIELD_BITS_2003, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY);
 
         // R = cG
         EC_POINT_mul(eCurve, r, nullptr, basePoint, c, numContext);