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main.py
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import curses, json, datetime
from ciphers import *
def get_data():
with open("db.json", "r") as f:
data = json.loads(f.read())
return data
def save_data(data):
with open("db.json", "w") as f:
f.write(json.dumps(data))
def save_encoding(cipher_type, plaintext, ciphertext):
data = get_data()
max_id = -1
for e in data:
if e['id'] > max_id:
max_id = e['id']
data.append({"id": max_id + 1, "cipher_type": cipher_type, "plaintext": plaintext, "ciphertext": ciphertext})
save_data(data)
with open("output.txt", "w") as f:
f.write("cipher type: {}\nplaintext: {}\nciphertext: {}\ndate: {}".format(cipher_type, plaintext, ciphertext,
datetime.datetime.now().strftime(
"%Y-%m-%d %H:%M:%S")))
def display_input(stdscr, greeting_string, end_string):
stdscr.clear()
stdscr.border(0)
stdscr.addstr(1, 1, greeting_string)
stdscr.addstr(4, 1, end_string)
text = ""
while True:
key = stdscr.getch()
if key in [curses.KEY_ENTER, ord("\n")]:
stdscr.clear()
stdscr.border(0)
return text
elif key in [curses.KEY_BACKSPACE, ord('\b')]:
stdscr.clear()
stdscr.border(0)
text = text[:-1]
stdscr.addstr(1, 1, greeting_string)
stdscr.addstr(4, 1, end_string)
stdscr.addstr(2, 1, text)
else:
text += chr(key)
stdscr.addstr(2, 1, text)
def display_password_input(stdscr, greeting_string, end_string):
stdscr.clear()
stdscr.border(0)
stdscr.addstr(1, 1, greeting_string)
stdscr.addstr(4, 1, end_string)
text = ""
passtext = ""
while True:
key = stdscr.getch()
if key in [curses.KEY_ENTER, ord("\n")]:
stdscr.clear()
stdscr.border(0)
return text
elif key in [curses.KEY_BACKSPACE, ord('\b')]:
stdscr.clear()
stdscr.border(0)
text = text[:-1]
passtext = passtext[:-1]
stdscr.addstr(1, 1, greeting_string)
stdscr.addstr(4, 1, end_string)
stdscr.addstr(2, 1, passtext)
else:
text += chr(key)
passtext += "*"
stdscr.addstr(2, 1, passtext)
def display_encoding(stdscr, plaintext, ciphertext):
stdscr.clear()
stdscr.border(0)
stdscr.addstr(1, 1, "Here's data you provided us with. Remember, data also saved in db.json and output.txt files.")
stdscr.addstr(2, 1, "Plaintext: {}".format(plaintext))
stdscr.addstr(3, 1, "Ciphertext: {}".format(ciphertext))
stdscr.addstr(4, 1, "Press enter to continue...")
while True:
key = stdscr.getch()
if key in [curses.KEY_ENTER, ord("\n")]:
stdscr.clear()
stdscr.border(0)
return text
# def display_menu(stdscr, items):
# stdscr = curses.initscr()
# curses.noecho()
# curses.cbreak()
# stdscr.keypad(1)
# stdscr.border(0)
# curses.curs_set(0)
if __name__ == "__main__":
try:
# -- Initialize --
stdscr = curses.initscr()
curses.noecho()
curses.cbreak()
stdscr.keypad(1)
stdscr.border(0)
# stdscr.addstr(5, 5, 'Hello from Curses!', curses.A_BOLD)
# stdscr.addstr(6, 5, 'Press q to close this screen', curses.A_NORMAL)
curses.curs_set(0)
# -- Main Loop --
items = [
["Encode using available ciphers", "encode"],
["Decode using available ciphers", "decode"],
["Exit"]
]
cipher_items = [
["Caesar", curses.beep],
["Gronsfeld", curses.beep],
["Polibius", curses.beep],
["XOR", curses.beep],
["Atbash", curses.beep],
["Return"]
]
position = 0
password = display_password_input(stdscr, "Welcome, please enter a password to continue:",
"if you forgot your password, then look in the code.")
if password == "password":
while True:
stdscr.addstr(1, 1, "Welcome to main menu. Choose the option needed.")
for index, item in enumerate(items):
if index == position:
mode = curses.A_REVERSE
else:
mode = curses.A_NORMAL
stdscr.addstr(3 + index * 2, 2, "{}".format(item[0]), mode)
key = stdscr.getch()
if key == ord('q'):
break
elif key == curses.KEY_UP:
position -= 1
if position < 0:
position = len(items) - 1
elif key == curses.KEY_DOWN:
position += 1
if position >= len(items):
position = 0
elif key in [curses.KEY_ENTER, ord("\n")]:
if position == len(items) - 1: # last item in menu is exit
break
elif items[position][1] == "encode":
stdscr.clear()
stdscr.border(0)
position = 0
while True:
stdscr.addstr(1, 1, "Which cipher would you like to use?")
for index, item in enumerate(cipher_items):
if index == position:
mode = curses.A_REVERSE
else:
mode = curses.A_NORMAL
if index != len(cipher_items) - 1:
stdscr.addstr(3 + index * 2, 2, "{}. {}".format(1 + index, item[0]), mode)
else:
stdscr.addstr(3 + index * 2, 2, "{}".format(item[0]), mode)
key = stdscr.getch()
if key == ord('q'):
break
elif key == curses.KEY_UP:
position -= 1
if position < 0:
position = len(cipher_items) - 1
elif key == curses.KEY_DOWN:
position += 1
if position >= len(cipher_items):
position = 0
elif key in [curses.KEY_ENTER, ord("\n")]:
if position == len(cipher_items) - 1: # last item in menu is exit
stdscr.clear()
stdscr.border(0)
position = 0
break
elif cipher_items[position][0] == "Caesar":
plaintext = display_input(stdscr,
"Please, enter string you want to encode, using Caesar cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
ciphertext = caesar_encode(plaintext, int(key))
save_encoding("caesar", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Gronsfeld":
plaintext = display_input(stdscr,
"Please, enter string you want to encode, using Gronsfeld cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
ciphertext = gronsfeld_encode(plaintext, int(key))
save_encoding("gronsfeld", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Polibius":
plaintext = display_input(stdscr,
"Please, enter string you want to encode, using Polibius cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
ciphertext = polibius_encode(plaintext)
save_encoding("polibius", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "XOR":
plaintext = display_input(stdscr,
"Please, enter string you want to encode, using XOR cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
ciphertext = xor_encode(plaintext, key)
save_encoding("XOR", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Atbash":
plaintext = display_input(stdscr,
"Please, enter string you want to encode, using Atbash cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
ciphertext = atbash_encode(plaintext)
save_encoding("atbash", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif items[position][1] == "decode":
stdscr.clear()
stdscr.border(0)
position = 0
while True:
stdscr.addstr(1, 1, "Which cipher would you like to use?")
for index, item in enumerate(cipher_items):
if index == position:
mode = curses.A_REVERSE
else:
mode = curses.A_NORMAL
if index != len(cipher_items) - 1:
stdscr.addstr(3 + index * 2, 2, "{}. {}".format(1 + index, item[0]), mode)
else:
stdscr.addstr(3 + index * 2, 2, "{}".format(item[0]), mode)
key = stdscr.getch()
if key == ord('q'):
break
elif key == curses.KEY_UP:
position -= 1
if position < 0:
position = len(cipher_items) - 1
elif key == curses.KEY_DOWN:
position += 1
if position >= len(cipher_items):
position = 0
elif key in [curses.KEY_ENTER, ord("\n")]:
if position == len(cipher_items) - 1: # last item in menu is exit
stdscr.clear()
stdscr.border(0)
position = 0
break
elif cipher_items[position][0] == "Caesar":
ciphertext = display_input(stdscr,
"Please, enter string you want to decode, using Caesar cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
plaintext = caesar_decode(ciphertext, int(key))
save_encoding("caesar", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Gronsfeld":
ciphertext = display_input(stdscr,
"Please, enter string you want to decode, using Gronsfeld cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
plaintext = gronsfeld_decode(ciphertext, int(key))
save_encoding("gronsfeld", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Polibius":
ciphertext = display_input(stdscr,
"Please, enter string you want to decode, using Polibius cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a integer key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
plaintext = polibius_decode(ciphertext)
save_encoding("polibius", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "XOR":
ciphertext = display_input(stdscr,
"Please, enter string you want to decode, using XOR cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
key = display_input(stdscr, "Please, enter a key:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
plaintext = xor_decode(ciphertext, key)
save_encoding("XOR", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
elif cipher_items[position][0] == "Atbash":
ciphertext = display_input(stdscr,
"Please, enter string you want to decode, using Atbash cipher:",
"We will save your ciphertext in the 'database' as well as in the file output.txt")
try:
plaintext = atbash_decode(ciphertext)
save_encoding("atbash", plaintext, ciphertext)
display_encoding(stdscr, plaintext, ciphertext)
except:
pass
else:
items[position][1]()
except:
pass
finally:
# --- Cleanup on exit ---
stdscr.keypad(0)
curses.echo()
curses.nocbreak()
curses.endwin()