fix: generate random nonce

src/encryptor.c

@@ -2,6 +2,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <aes.h>
+#include <time.h>
 
 #include "hwinfo.h"
 #include "util.h"
@@ -63,6 +64,23 @@ int main(int argc, char** argv) {
     struct AES_ctx ctx;
     uint8_t nonce[16] = {0};
 
+    time_t ts = time(NULL);
+    srand(ts);
+
+    for (size_t i = 0; i < sizeof(nonce); i+= 4) {
+        uint32_t random = rand();
+        nonce[i + 0] = random & 0xFF;
+        nonce[i + 1] = (random >>  8) & 0xFF;
+        nonce[i + 2] = (random >> 16) & 0xFF;
+        nonce[i + 3] = (random >> 24) & 0xFF;
+    }
+
+    fprintf(stderr, "Nonce: ");
+    for (size_t i = 0; i < sizeof(nonce); i++) {
+        fprintf(stderr, "%02X", nonce[i]);
+    }
+    fprintf(stderr, "\n");
+
     FILE* license = fopen(input, "rb");
     long data_start = ftell(license);
     fseek(license, 0, SEEK_END);