Added Padded_Parser & Right_Rotator

Author: sam-mg

Main.py

@@ -1,7 +1,12 @@
 from Input_Padder import InputPadder
+from Padded_Parser import InputParser
 
 input_string = str(input("Enter the data: "))
 
 padded_input_string = InputPadder(input_string).pad_input()
 
-print("Padded Input String: ", padded_input_string)
+print("Padded Input String: ", padded_input_string)
+
+expanded_message_schedule = InputParser(padded_input_string).process_chunks()
+
+print("Expanded Message Schedule: ", expanded_message_schedule)

Padded_Parser.py

@@ -0,0 +1,20 @@
+import struct
+from Right_Rotator import RightRotator
+
+class InputParser:
+    def __init__(self, input_data):
+        self.input_data = input_data
+
+    def process_chunks(self):
+        result = []
+        for i in range(0, len(self.input_data), 64):
+            chunk = self.input_data[i:i + 64]
+            w = list(struct.unpack('>16L', chunk)) + [0] * 48
+            for i in range(16, 64):
+                s0 = RightRotator(w[i - 15], 7).right_rotate() ^ RightRotator(w[i - 15], 18).right_rotate() ^ (w[i - 15] >> 3)
+                s1 = RightRotator(w[i - 2], 17).right_rotate() ^ RightRotator(w[i - 2], 19).right_rotate() ^ (w[i - 2] >> 10)
+                w[i] = (w[i - 16] + s0 + w[i - 7] + s1) & 0xFFFFFFFF
+
+                result.append(w)
+
+        return result

Right_Rotator.py

@@ -0,0 +1,7 @@
+class RightRotator:
+    def __init__(self, value, bits):
+        self.value = value
+        self.bits = bits
+
+    def right_rotate(self):
+        return ((self.value >> self.bits) | (self.value << (32 - self.bits))) & 0xFFFFFFFF