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61 lines
1.5 KiB
61 lines
1.5 KiB
import binascii
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import time
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from rich.console import Console
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from rich.prompt import Prompt
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from cryptography_s_des_exploring.sdes.decrypt import decrypt_block
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from cryptography_s_des_exploring.sdes.blocks import encode, decode, decode_bytes
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def cast_to_key(number: int):
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binary = bin(number)[2:]
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return "0"*(10-len(binary)) + binary
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def cracking(ciphertext):
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founded = []
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start = time.monotonic()
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decoded_ciphertext = list(decode_bytes(ciphertext))
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for n in range(0, 1024):
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key = cast_to_key(n)
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decrypted = list(map(lambda b: decrypt_block(key, b), decoded_ciphertext))
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try:
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decoded_text = decode(decrypted)
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if len(decrypted) == len(list(encode(decoded_text))):
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founded.append((key, decoded_text))
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except UnicodeDecodeError as e:
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continue
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except binascii.Error as e:
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continue
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end = time.monotonic()
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return start, end, founded
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def cli_cracking():
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console = Console()
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ciphertext = Prompt.ask(f"[b]Enter the [yellow]ciphertext[/]")
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console.print(f"\n[cyan b]Cracking is started.[/]")
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start, end, founded = cracking(ciphertext)
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console.print(f"\n[yellow b]Time spent: [/]{end-start}[yellow b] \[s][/]\n")
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console.print(f"[cyan b]Found keys and messages:[/]")
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for key, decoded in founded:
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console.print(f"\t[cyan b]Key: [/][yellow b]{key}[/][cyan b], text:[/] \"{decoded}\"[cyan b].[/]")
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if __name__ == "__main__":
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cli_cracking()
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