Added AMI PFAT RSA 3K signed blocks support

Added AMI PFAT nested detection at each file

Added Award BIOS payload naming at each file

Switched Panasonic BIOS LZNT1 external library

Improved Panasonic LZNT1 detection and length

Improved Dell PFS code structure and fixed bugs

Improved code exception handling (raise, catch)

Improved code definitions (PEP8, docs, types)

Fixed some arguments missing from help screens

common/checksums.py

@@ -1,25 +1,31 @@
-#!/usr/bin/env python3
-#coding=utf-8
+#!/usr/bin/env python3 -B
+# coding=utf-8
 
 """
-Copyright (C) 2022 Plato Mavropoulos
+Copyright (C) 2022-2024 Plato Mavropoulos
 """
 
+
 # Get Checksum 16-bit
 def get_chk_16(data, value=0, order='little'):
+    """ Calculate Checksum-16 of data, controlling IV and Endianess """
+
     for idx in range(0, len(data), 2):
         # noinspection PyTypeChecker
-        value += int.from_bytes(data[idx:idx + 2], order)
-    
+        value += int.from_bytes(data[idx:idx + 2], byteorder=order)
+
     value &= 0xFFFF
-    
+
     return value
 
+
 # Get Checksum 8-bit XOR
 def get_chk_8_xor(data, value=0):
+    """ Calculate Checksum-8 XOR of data, controlling IV """
+
     for byte in data:
         value ^= byte
-    
+
     value ^= 0x0
-    
+
     return value