mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-30 16:31:08 +00:00
68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
def encrypt(input_string: str, key: int) -> str:
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result = ""
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for x in input_string:
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if not x.isalpha():
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result += x
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elif x.isupper():
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result += chr((ord(x) + key - 65) % 26 + 65)
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elif x.islower():
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result += chr((ord(x) + key - 97) % 26 + 97)
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return result
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def decrypt(input_string: str, key: int) -> str:
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result = ""
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for x in input_string:
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if not x.isalpha():
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result += x
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elif x.isupper():
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result += chr((ord(x) - key - 65) % 26 + 65)
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elif x.islower():
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result += chr((ord(x) - key - 97) % 26 + 97)
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return result
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def brute_force(input_string: str) -> None:
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key = 1
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result = ""
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while key <= 94:
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for x in input_string:
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indx = (ord(x) - key) % 256
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if indx < 32:
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indx = indx + 95
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result = result + chr(indx)
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print(f"Key: {key}\t| Message: {result}")
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result = ""
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key += 1
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return None
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def main():
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while True:
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print(f'{"-" * 10}\n Menu\n{"-" * 10}')
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print(*["1.Encrpyt", "2.Decrypt", "3.BruteForce", "4.Quit"], sep="\n")
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choice = input("What would you like to do?: ")
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if choice not in ["1", "2", "3", "4"]:
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print("Invalid choice, please enter a valid choice")
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elif choice == "1":
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input_string = input("Please enter the string to be encrypted: ")
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key = int(input("Please enter off-set between 0-25: "))
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if key in range(1, 95):
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print(encrypt(input_string.lower(), key))
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elif choice == "2":
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input_string = input("Please enter the string to be decrypted: ")
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key = int(input("Please enter off-set between 1-94: "))
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if key in range(1, 95):
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print(decrypt(input_string, key))
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elif choice == "3":
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input_string = input("Please enter the string to be decrypted: ")
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brute_force(input_string)
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main()
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elif choice == "4":
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print("Goodbye.")
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break
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if __name__ == "__main__":
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main()
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