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Unscramble the special names for Need For Speed: High Stakes (PlayStation)
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| def scramble_01(data): | |
| n = len(data) | |
| return bytes( | |
| sum(((data[y] >> x) & 1) << y for y in range(n)) for x in range(n) | |
| ) | |
| def scramble_02(data): | |
| n = len(data) | |
| local_8 = bytearray(n) | |
| output = bytearray(n) | |
| for i in range(n): | |
| inverted_byte = (~data[i]) & 0xFF | |
| local_8[i] = inverted_byte | |
| output[i] = inverted_byte | |
| for i in range(n): | |
| bit_from_local_0 = (local_8[0] >> i) & 1 | |
| bit_from_local_i = (local_8[i] >> i) & 1 | |
| mask = 1 << i | |
| output[0] = (output[0] & ~mask) | (bit_from_local_i << i) | |
| output[i] = (output[i] & ~mask) | (bit_from_local_0 << i) | |
| for i in range(1, n): | |
| j = i - 1 | |
| bit_j_from_local = (local_8[i] >> j) & 1 | |
| bit_0_from_local = (local_8[i] >> 0) & 1 | |
| mask_0 = 1 << 0 | |
| mask_j = 1 << j | |
| cleared_val = output[i] & ~mask_0 & ~mask_j | |
| new_val = cleared_val | (bit_j_from_local << 0) | (bit_0_from_local << j) | |
| output[i] = new_val | |
| return bytes(output) | |
| if __name__ == '__main__': | |
| for scrambled_data, function in ( | |
| (b'\x0c\x09\x03\x12\x08\x1e\x1f\x00', scramble_01), | |
| (b'\x12\x1a\x36\x13\x0c\x3e\x3f\x00', scramble_01), | |
| (b'\x25\x09\x11\x36\x29\x3e\x3f\x00', scramble_01), | |
| (b'\xcd\x99\x88\xd7\xbf\xbb\xbf\xff', scramble_02), | |
| (b'\x87\xdf\xdf\xab\x9d\x8f\xd8\xff', scramble_02), | |
| ): | |
| print(function(scrambled_data).decode().strip('\0')) |
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