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20 lines
722 B
20 lines
722 B
from random import choice
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xor = lambda a, b: list(map(lambda x, y: x ^ y, a, b))
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rotl = lambda x, n: ((x << n) & 0xffffffff) | ((x >> (32 - n)) & 0xffffffff)
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get_uint32_be = lambda key_data: ((key_data[0] << 24) | (key_data[1] << 16) | (key_data[2] << 8) | (key_data[3]))
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put_uint32_be = lambda n: [((n >> 24) & 0xff), ((n >> 16) & 0xff), ((n >> 8) & 0xff), ((n) & 0xff)]
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padding = lambda data, block=16: data + [(16 - len(data) % block) for _ in range(16 - len(data) % block)]
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unpadding = lambda data: data[:-data[-1]]
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list_to_bytes = lambda data: b''.join([bytes((i,)) for i in data])
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bytes_to_list = lambda data: [i for i in data]
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random_hex = lambda x: ''.join([choice('0123456789abcdef') for _ in range(x)])
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