
"""simple docstring"""




import os
import random
import sys

from . import cryptomath_module as cryptomath
from . import rabin_miller

UpperCAmelCase__      :    Union[str, Any]    							= 3

def lowercase_  (   _snake_case						):
							print("""Generating primitive root of p"""						)
							while True:
														SCREAMING_SNAKE_CASE__						:       str           =   random.randrange(3   ,_snake_case						)
														if pow(_snake_case   ,2   ,_snake_case						) == 1:
																					continue
														if pow(_snake_case   ,_snake_case   ,_snake_case						) == 1:
																					continue
														return g

def lowercase_  (   _snake_case						):
							print("""Generating prime p..."""						)
							SCREAMING_SNAKE_CASE__						:       Dict           =   rabin_miller.generate_large_prime(_snake_case						)  # select large prime number.
							SCREAMING_SNAKE_CASE__						:       str           =   primitive_root(_snake_case						)  # one primitive root on modulo p.
							SCREAMING_SNAKE_CASE__						:       Optional[int]           =   random.randrange(3   ,_snake_case						)  # private_key -> have to be greater than 2 for safety.
							SCREAMING_SNAKE_CASE__						:       Union[str, Any]           =   cryptomath.find_mod_inverse(pow(_snake_case   ,_snake_case   ,_snake_case						)   ,_snake_case						)

							SCREAMING_SNAKE_CASE__						:       Tuple           =   (key_size, e_a, e_a, p)
							SCREAMING_SNAKE_CASE__						:       Optional[int]           =   (key_size, d)

							return public_key, private_key

def lowercase_  (   _snake_case   ,_snake_case						):







							if os.path.exists(f'''{name}_pubkey.txt'''						) or os.path.exists(f'''{name}_privkey.txt'''						):
														print("""\nWARNING:"""						)
														print(
														    f'''\"{name}_pubkey.txt\" or \"{name}_privkey.txt\" already exists. \n'''
														    """Use a different name or delete these files and re-run this program."""						)
														sys.exit()

							SCREAMING_SNAKE_CASE__      ,      SCREAMING_SNAKE_CASE__						:       Dict           =   generate_key(_snake_case						)
							print(f'''\nWriting public key to file {name}_pubkey.txt...'''						)
							with open(f'''{name}_pubkey.txt'''   ,"""w"""						) as fo:
														fo.write(f'''{public_key[0]},{public_key[1]},{public_key[2]},{public_key[3]}'''						)

							print(f'''Writing private key to file {name}_privkey.txt...'''						)
							with open(f'''{name}_privkey.txt'''   ,"""w"""						) as fo:
														fo.write(f'''{private_key[0]},{private_key[1]}'''						)

def lowercase_  (   ):
							print("""Making key files..."""						)
							make_key_files("""elgamal"""   ,2_048						)
							print("""Key files generation successful"""						)


if __name__ == "__main__":
					main()










from bisect import bisect
from itertools import accumulate




def 			__magic_name__				( A		:					Optional[Any],  A		:					List[str],  A		:					Tuple,  A		:					Optional[Any]   ):






			'''simple docstring'''







			a    =			sorted(zip(A,  A   ),  key=lambda A   : x[0] / x[1],  reverse=A   )
			a    ,		a    =			[i[0] for i in r], [i[1] for i in r]
			a    =			list(accumulate(A   )   )
			a    =			bisect(A,  A   )
			return (
			    0
			    if k == 0
			    else sum(vl[:k]   ) + (w - acc[k - 1]) * (vl[k]) / (wt[k])
			    if k != n
			    else sum(vl[:k]   )
			)


if __name__ == "__main__":
		import doctest

		doctest.testmod()






