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306 lines
11 KiB
Python
306 lines
11 KiB
Python
#pyinstaller -F -i "icon.ico" McEliece_console_v2.py
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import hashlib
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import getpass
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import pyperclip
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def main():
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safe_start()
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def safe_start():
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try:
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start_menu()
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except:
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print("\nUnknown error (maybe ctrl+c), emergency exit!")
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def start_menu():
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f = True
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print("\nWhat is the author's nickname?")
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#vovuas 2003
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if myhash(getpass.getpass("Letters: ")) != 132782522349988:
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f = False
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if myhash(getpass.getpass("Digits: ")) != 851912389:
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f = False
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if f:
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print("Authorization successful, wait a bit.")
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menu()
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else:
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print("Permission denied.")
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print("\nPress ENTER to exit.", end = '')
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input()
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def menu():
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import cryptosystem_core_v2 as ME_core
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core = ME_core.McEliece_core()
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global_info = "All files are interpreted as raw bytes and must be located in the directory with this executable file.\nDefault filenames with .bin extension: pubkey, privkey_S, privkey_p, plaintext, ciphertext, ciphered_string.\nDon't forget to import (or generate) keys before encryption/decryption and after changing config!\nYou can restore any one key from two another (don't forget to import before).\n"
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info = "Menu numbers: 0 = exit, s = print short info, h = print this info, g = print global info, c = change config;\n1 = generate keys, 10 = unsafe generate keys (seed = hash(password));\n11 = export pubkey, 12 = export privkey_S, 13 = export privkey_p,\n14 = import pubkey, 15 = import privkey_S, 16 = import privkey_p,\n17 = restore pubkey, 18 = restore privkey_S, 19 = restore privkey_p;\n2 = encrypt,\n21 = encrypt non-default filename, 22 = encrypt string from keyboard, 23 = encrypt hided string;\n3 = decrypt,\n31 = decrypt non-default filename, 32 = decrypt string on screen, 33 = decrypt string to clipboard.\n"
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short_info = "0 = exit, s/h/g = print short/extended/global info, c = change config;\n1 = generate keys, 2 = encrypt, 3 = decrypt\n"
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err = "Error! Check global info (menu number g) and try again!\n"
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ok = "Operation successful.\n"
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inp = ['0', 's', 'h', 'g', 'c'] + [str(i) for i in range(1, 4)] + [str(i) for i in range(10, 20)] + [str(i) for i in range(21, 24)] + [str(i) for i in range(31, 34)] + ['1337']
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print("\nMcEliece cryptosystem implementation by vovuas2003. Version 2.\n")
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print(global_info)
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print(info)
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while True:
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s = input("Menu number: ")
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while s not in inp:
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s = input("Wrong menu number; h = help, s = short help: ")
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if s == '0':
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print("\nGood luck!")
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break
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elif s == 's':
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print(short_info)
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elif s == 'h':
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print(info)
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elif s == 'g':
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print(global_info)
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elif s == 'c':
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n, k = core.get_config()
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print("Default config is 255 210, current is " + str(n) + " " + str(k) + ". Change config? Also reset all keys!")
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if(not get_yes_no()):
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continue
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try:
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print("Config is two numbers n >= k >= 2; (3 * 5 * 17) mod n = 0. Larger values = larger keys.\nRandomly change (n - k) div 2 bytes during encryption, but add (n - k + 1) bytes to each chunk with len (k - 1).")
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n, k = map(int, input("Write n and k separated by a space: ").split())
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core.change_config(n, k)
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print(ok)
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except:
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print(err)
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elif s == '1':
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print("Reset all keys!")
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if(not get_yes_no()):
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continue
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try:
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core.generate_keys()
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print(ok)
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except:
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print(err)
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elif s == '10':
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print("It is better to use menu number 1 for true random!")
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if(not get_yes_no()):
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continue
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try:
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core.generate_keys(normalhash(getpass.getpass("Password for hash: ")))
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print(ok)
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except:
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print(err)
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elif s == '11':
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print("Rewrite pubkey.bin!")
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if(not get_yes_no()):
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continue
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try:
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write_file("pubkey.bin", bytes(core.get_pubkey()))
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print(ok)
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except:
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print(err)
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elif s == '12':
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print("Rewrite privkey_S.bin!")
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if(not get_yes_no()):
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continue
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try:
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write_file("privkey_S.bin", bytes(core.get_privkey_S()))
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print(ok)
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except:
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print(err)
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elif s == '13':
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print("Rewrite privkey_p.bin!")
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if(not get_yes_no()):
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continue
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try:
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write_file("privkey_p.bin", bytes(core.get_privkey_p()))
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print(ok)
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except:
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print(err)
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elif s == '14':
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print("Load pubkey.bin into cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.set_pubkey([int(i) for i in read_file("pubkey.bin")])
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print(ok)
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except:
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print(err)
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elif s == '15':
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print("Load privkey_S.bin into cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.set_privkey_S([int(i) for i in read_file("privkey_S.bin")])
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print(ok)
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except:
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print(err)
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elif s == '16':
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print("Load privkey_p.bin into cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.set_privkey_p([int(i) for i in read_file("privkey_p.bin")])
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print(ok)
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except:
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print(err)
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elif s == '17':
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print("Rewrite pubkey inside cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.restore_pubkey()
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print(ok)
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except:
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print(err)
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elif s == '18':
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print("Rewrite privkey_S inside cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.restore_privkey_S()
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print(ok)
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except:
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print(err)
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elif s == '19':
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print("Rewrite privkey_p inside cryptosystem.")
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if(not get_yes_no()):
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continue
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try:
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core.restore_privkey_p()
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print(ok)
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except:
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print(err)
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elif s == '2':
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print("Need plaintext.bin, rewrite ciphertext.bin!")
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if(not get_yes_no()):
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continue
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try:
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write_file("ciphertext.bin", bytes(core.encrypt([int(i) for i in read_file("plaintext.bin")])))
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print(ok)
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except:
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print(err)
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elif s == '21':
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print("Type names with extensions!")
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if(not get_yes_no()):
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continue
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try:
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inp_name = input("File to encrypt: ")
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out_name = input("Name for save: ")
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write_file(out_name, bytes(core.encrypt([int(i) for i in read_file(inp_name)])))
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print(ok)
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except:
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print(err)
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elif s == '22':
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print("Rewrite ciphered_string.bin!")
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if(not get_yes_no()):
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continue
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try:
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inp_str = input("String to encrypt: ")
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write_file("ciphered_string.bin", bytes(core.encrypt([int(i) for i in inp_str.encode('utf-8')])))
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print(ok)
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except:
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print(err)
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elif s == '23':
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print("Rewrite ciphered_string.bin!")
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if(not get_yes_no()):
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continue
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try:
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inp_str = getpass.getpass("Hided string to encrypt: ")
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write_file("ciphered_string.bin", bytes(core.encrypt([int(i) for i in inp_str.encode('utf-8')])))
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print(ok)
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except:
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print(err)
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elif s == '3':
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print("Need ciphertext.bin, rewrite plaintext.bin!")
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if(not get_yes_no()):
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continue
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try:
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write_file("plaintext.bin", bytes(core.decrypt([int(i) for i in read_file("ciphertext.bin")])))
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print(ok)
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except:
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print(err)
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elif s == '31':
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print("Type names with extensions!")
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if(not get_yes_no()):
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continue
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try:
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inp_name = input("File to decrypt: ")
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out_name = input("Name for save: ")
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write_file(out_name, bytes(core.decrypt([int(i) for i in read_file(inp_name)])))
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print(ok)
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except:
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print(err)
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elif s == '32':
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print("Need ciphered_string.bin! Visible input!!!")
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if(not get_yes_no()):
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continue
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try:
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print("Deciphered string: " + bytes(core.decrypt([int(i) for i in read_file("ciphered_string.bin")])).decode('utf-8'))
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print(ok)
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except:
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print(err)
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elif s == '33':
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print("Need ciphered_string.bin! Copy to clipboard.")
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if(not get_yes_no()):
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continue
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try:
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tmp = bytes(core.decrypt([int(i) for i in read_file("ciphered_string.bin")])).decode('utf-8')
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except:
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print(err)
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continue
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try:
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pyperclip.copy(tmp)
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print(ok)
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except:
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print("Decryption was successful, but program can't use clipboard.\nOn Linux (especially Ubuntu) try to install xclip (e.g. via apt-get).")
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elif s == '1337':
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PT()
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else:
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print("Impossible behaviour, mistake in source code, emergency exit!\nThe string allowed in the inp array is not bound to the call of any function!")
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break
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def write_file(name, data):
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with open(name, "wb") as f:
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f.write(data)
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def read_file(name):
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with open(name, "rb") as f:
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data = f.read()
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return data
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def get_yes_no():
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s = input("Confirm (0 = go back, 1 = continue): ")
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while s not in ['0', '1']:
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s = input("Try again, 0 or 1: ")
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return int(s)
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def myhash(s, m = 2**61 - 1, p = 257):
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a = 0
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for i in range(len(s)):
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a = ((a * p) % m + ord(s[i])) % m
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return a
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def normalhash(s):
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return int(hashlib.sha256(bytearray(s, 'utf-8')).hexdigest(), 16)
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def PT(m = -3, M = 3):
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if m == 0 or abs(m) > M:
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print("PT!")
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return
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s = "PT!"
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p = " "
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f = False
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if m < 0:
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s, p = p, s
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m *= -1
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f = True
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print()
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if f:
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print(p * (10 * m + 1))
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print(p + (s * 3 + p + s * 3 + p + s + p) * m)
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print(p + (s + p + s + p * 2 + s + p * 2 + s + p) * m)
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print(p + (s * 3 + p * 2 + s + p * 2 + s + p) * m)
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print(p + (s + p * 4 + s + p * 4) * m)
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print(p + (s + p * 4 + s + p * 2 + s + p) * m)
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if f:
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print(p * (10 * m + 1))
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print()
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if __name__ == "__main__":
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main()
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