UserUnknownFactor · May 2, 2025 08:39 · May 2, 2025
diff --git a/key_xor_files_by_ext.py b/key_xor_files_by_ext.py
@@ -0,0 +1,34 @@
+import os
+import numpy as np
+import re
+
+def xor_files(key_string, extension=".txt", prefix="dec_", bytes_required=6):
+    key_bytes = bytes([int(x, 16) for x in key_string.split()])
+    #assert len(key_bytes) == bytes_required, f"Key must be exactly {bytes_required} bytes"
+
+    # Get all files in the current directory
+    all_files = [f for f in os.listdir() if f.lower().endswith(extension)]
+
+    for filename in all_files:
+        print(f"Processing {filename}...")
+
+        with open(filename, 'rb') as f:
+            data = np.frombuffer(f.read(), dtype=np.uint8)
+
+        # Create the key array and repeat it to match the data length
+        key_array = np.array(list(key_bytes), dtype=np.uint8)
+        repeats = len(data) // len(key_array) + 1
+        full_key = np.tile(key_array, repeats)[:len(data)]
+
+        result = np.bitwise_xor(data, full_key)
+
+        output_filename = f"{prefix}{filename}"
+        with open(output_filename, 'wb') as f:
+            f.write(result.tobytes())
+
+        print(f"Created {output_filename}")
+
+# Example usage
+if __name__ == "__main__":
+    key = "AA BB CC DD EE FF"
+    xor_files(key)