Comments (1)
Kochanac
commented on September 25, 2024
таск
Вы смогли перехватить чек на 100 лклкоинов и даже узнать алгоритм проверки подписи. Беда в том, что вам нужна целая 1000, а чек одноразовый. Что же делать?
вот так подписываются чеки:
def hash(text):
text += SALT # secret
p = 17
s = 0
for i in range(len(text)):
s += p**i*ord(text[i])
return s
чек: cashier's check from Boris: 100
подпись чека: 6493092290128853969534189445340477021227798563586778349114399361863758254911436462
банк тут: юрл:802
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