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# File 'lib/mtproto/type/auth_key/server_dh_params.rb', line 9
def self.parse(body)
constructor = body[0, 4].unpack1('L<')
raise "Unexpected constructor: 0x#{constructor.to_s(16)}" unless constructor == CONSTRUCTOR
offset = 4
nonce = body[offset, 16]
offset += 16
server_nonce = body[offset, 16]
offset += 16
length_byte = body[offset].ord
offset += 1
if length_byte == 254
length_bytes = body[offset, 3].bytes
encrypted_answer_length = length_bytes[0] | (length_bytes[1] << 8) | (length_bytes[2] << 16)
offset += 3
else
encrypted_answer_length = length_byte
end
encrypted_answer = body[offset, encrypted_answer_length]
{
nonce: nonce,
server_nonce: server_nonce,
encrypted_answer: encrypted_answer
}
end
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