27 lines
532 B
Python
27 lines
532 B
Python
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import random
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n = 10
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flag_len = 20
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state = [random.randint(0, (1 << n) - 1) for i in range(n)]
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k = 0
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def update_state():
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for i in range(n):
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state.append(state[0])
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for j in range(1, n):
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state[j] ^= ((state[0] >> j) & 1) << i
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state.pop(0)
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def get_random():
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global k
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if(k == n):
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k = 0
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update_state()
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k += 1
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return state[k - 1]
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flag='ctf{' + (''.join([chr(get_random() % 26 + ord('a')) for i in range(flag_len)])) + '}'
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print(flag)
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update_state()
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print(state)
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