34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
import random
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from Cryptodome.Cipher import ChaCha20
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from Cryptodome.Util.number import long_to_bytes
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#from secret import flag, randkey
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nonce = -1
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flag = 'Z'*46
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randkey= 'A'*32
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def encrypt_and_update(msg, nonce):
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cipher = ChaCha20.new(key=randkey, nonce=long_to_bytes(nonce))
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nonce = random.getrandbits(12*8)
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return cipher.encrypt(msg.encode())
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def main():
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seed = int(input(
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"Hi, our system doesn't support analogic entropy... so please give a value to initialize me!\n> "))
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random.seed(seed)
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nonce = random.getrandbits(12*8)
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print("OK! I can now give you the encrypted secret!")
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print(encrypt_and_update(flag, nonce).hex())
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confirm = input("Do you want to encrypt something else? (y/n)")
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while confirm.lower() != 'n':
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if confirm.lower() == 'y':
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msg = input("What is the message? ")
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print(encrypt_and_update(msg, nonce).hex())
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confirm = input("Do you want to encrypt something else? (y/n)")
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if __name__ == '__main__':
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main()
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