def multiblock_encryption(c, key_id, versus, data, block_size, working_key_mode, working_key = ''):
"""
TODO.
"""
start = False
chaining_data = ''
result = ''
while data != '':
if len(data) <= block_size and not start:
buff = data
data = ''
flag = 0x03
start = True
else:
if len(data) > block_size:
buff = data[:block_size]
data = data[block_size:]
flag = 0x00 # body
else:
buff = data
data = ''
flag = 0x02 # end
if not start:
flag = 0x01 # start
start = True
Protocol.send_multiblock_encryption(c, key_id, flag, versus, buff, chaining_data, working_key_mode, working_key)
ack = Protocol.recv_multiblock_encryption(c, 4)
if ack['ack_code'] == 0x00:
chaining_data = ack['chaining_data']
result += ack['data']
else: break
return ack['ack_code'], result
