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HOP 1.0 - decode.py

@@ -0,0 +1,65 @@
+import base64
+ciphertext=input("Enter message to decode: ")
+steponel = list(ciphertext)
+stepone = ""
+for i in range(len(steponel)-1):
+  stepone=stepone+steponel[i]
+steptwo = stepone.encode('utf-8')
+steptwob = base64.a85decode(steptwo)
+steptwoc = steptwob.decode('utf-8')
+def vigenere_dec(cipher,key):
+  alphabet = "abcdefghijklmnopqrstuvwxyz0123456789"
+  input_string = ""
+  dec_key = ""
+  dec_string = ""
+  dec_key = key
+  dec_key = dec_key.lower()
+  input_string = cipher
+  input_string = input_string.lower()
+  string_length = len(input_string)
+  expanded_key = dec_key
+  expanded_key_length = len(expanded_key)
+  while expanded_key_length < string_length:
+    expanded_key = expanded_key + dec_key
+    expanded_key_length = len(expanded_key)
+  key_position = 0
+  for letter in input_string:
+    if letter in alphabet:
+      position = alphabet.find(letter)
+      key_character = expanded_key[key_position]
+      key_character_position = alphabet.find(key_character)
+      key_position = key_position + 1
+      new_position = position - key_character_position
+      if new_position > 35:
+        new_position = new_position + 36
+      new_character = alphabet[new_position]
+      dec_string = dec_string + new_character
+    else:
+      dec_string = dec_string + letter
+  return(dec_string)
+def stepfour(stepthree):
+  stepthree=str(int(stepthree,36))
+  test = list(stepthree)
+  if len(test)%3==1:
+    stepthree="00"+stepthree
+  if len(test)%3==2:
+    stepthree="0"+stepthree
+  stepthreel = list(stepthree)
+  stepfourl = [""]*int((float(len(stepthreel))/3))
+  k = 0
+  while k < len(stepthreel)-2:
+    stepfourl[int(k/3)] = stepthreel[k] + stepthreel[k+1] + stepthreel[k+2]
+    k = k + 3
+  for j in range(len(stepfourl)):
+    temp = stepfourl[j]
+    temp = int(temp)
+    temp = chr(temp)
+    stepfourl[j] = temp
+  stepfour=""
+  for l in range(len(stepfourl)):
+    stepfour = stepfour + stepfourl[l]
+  return(stepfour)
+key = input("Enter encryption key: ")
+stepthree = vigenere_dec(steptwoc, key)
+stepfour = stepfour(stepthree)
+print("Your decoded message: "+stepfour)

HOP 1.0 - encode.py

@@ -0,0 +1,56 @@
+import base64
+plaintext = input("Enter message to encode: ")
+def b36_encode(i):
+    if i < 0: return "-" + b36_encode(-i)
+    if i < 36: return "0123456789abcdefghijklmnopqrstuvwxyz"[i]
+    return b36_encode(i // 36) + b36_encode(i % 36) 
+def stepone(plaintext):
+  magicasciipowers = list(plaintext)
+  numbersgohere = [""]*len(magicasciipowers)
+  for i in range(len(magicasciipowers)):
+    temp = magicasciipowers[i]
+    temp = ord(temp)
+    if (temp<100):
+      numbersgohere[i]="0"+str(temp)
+    else:
+      numbersgohere[i]=str(temp)
+  numbers = ""
+  for i in range(len(numbersgohere)):
+    numbers=numbers+numbersgohere[i]
+  return(int(numbers))
+def vigenere_enc(stepone,key):
+  alphabet = "abcdefghijklmnopqrstuvwxyz0123456789"
+  input_string = ""
+  enc_key = ""
+  enc_string = ""
+  enc_key = key
+  enc_key = enc_key.lower()
+  input_string = stepone
+  input_string = input_string.lower()
+  string_length = len(input_string)
+  expanded_key = enc_key
+  expanded_key_length = len(expanded_key)
+  while expanded_key_length < string_length:
+    expanded_key = expanded_key + enc_key
+    expanded_key_length = len(expanded_key)
+  key_position = 0
+  for letter in input_string:
+    if letter in alphabet:
+      position = alphabet.find(letter)
+      key_character = expanded_key[key_position]
+      key_character_position = alphabet.find(key_character)
+      key_position = key_position + 1
+      new_position = position + key_character_position
+      if new_position > 35:
+        new_position = new_position - 36
+      new_character = alphabet[new_position]
+      enc_string = enc_string + new_character
+    else:
+      enc_string = enc_string + letter
+  return(enc_string)
+key=input("Enter encryption key: ")
+steptwo = vigenere_enc(b36_encode(stepone(plaintext)),key)
+steptwob = steptwo.encode('utf-8')
+stepthree = base64.a85encode(steptwob)
+stepthreeb = stepthree.decode('utf-8')
+print("Your encoded message: "+str(stepthreeb)+"3")