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0601b56173
* Contributes to #9943 Added doctest to largest_of_very_large_numbers.py Added doctest to word_patterns.py Added doctest to onepad_cipher.py * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Contributes to #9943 Added doctest to maths/largest_of_very_large_numbers.py Added doctest to strings/word_patterns.py Added doctest to ciphers/onepad_cipher.py * Add tests without modifying code #10740 Added test to maths/largest_of_very_large_numbers Added test to strings/word_patterns.py Added test to ciphers/onepad_cipher.py --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
import random
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class Onepad:
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@staticmethod
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def encrypt(text: str) -> tuple[list[int], list[int]]:
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"""
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Function to encrypt text using pseudo-random numbers
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>>> Onepad().encrypt("")
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([], [])
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>>> Onepad().encrypt([])
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([], [])
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>>> random.seed(1)
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>>> Onepad().encrypt(" ")
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([6969], [69])
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>>> random.seed(1)
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>>> Onepad().encrypt("Hello")
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([9729, 114756, 4653, 31309, 10492], [69, 292, 33, 131, 61])
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>>> Onepad().encrypt(1)
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Traceback (most recent call last):
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...
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TypeError: 'int' object is not iterable
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>>> Onepad().encrypt(1.1)
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Traceback (most recent call last):
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...
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TypeError: 'float' object is not iterable
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"""
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plain = [ord(i) for i in text]
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key = []
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cipher = []
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for i in plain:
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k = random.randint(1, 300)
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c = (i + k) * k
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cipher.append(c)
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key.append(k)
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return cipher, key
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@staticmethod
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def decrypt(cipher: list[int], key: list[int]) -> str:
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"""
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Function to decrypt text using pseudo-random numbers.
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>>> Onepad().decrypt([], [])
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''
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>>> Onepad().decrypt([35], [])
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''
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>>> Onepad().decrypt([], [35])
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Traceback (most recent call last):
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...
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IndexError: list index out of range
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>>> random.seed(1)
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>>> Onepad().decrypt([9729, 114756, 4653, 31309, 10492], [69, 292, 33, 131, 61])
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'Hello'
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"""
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plain = []
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for i in range(len(key)):
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p = int((cipher[i] - (key[i]) ** 2) / key[i])
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plain.append(chr(p))
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return "".join(plain)
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if __name__ == "__main__":
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c, k = Onepad().encrypt("Hello")
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print(c, k)
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print(Onepad().decrypt(c, k))
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