A passive optical network physical layer data encryption method and device
A passive optical network and data encryption technology, applied in the field of passive optical network, can solve the problems of low data security and low spectrum utilization, and achieve the effect of improving data security and resource utilization
Active Publication Date: 2020-09-25
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
Due to the broadcast nature of passive optical network in downlink services, illegal optical network units can easily obtain user data, resulting in serious data security problems in the architecture of passive optical network
Encrypting the physical layer data of the passive optical network can improve data security. The current physical layer data encryption method generally only uses one modulation method, the spectrum utilization rate is not high, and the data security is not high.
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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0046] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.
[0047] figure 1 It is a schematic flow chart of the method of the embodiment of the present invention, figure 2 It is a functional block diagram of an embodiment of the present invention. As shown in the figure, the passive optical network physical layer data encry...
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The invention discloses a passive optical network physical layer data encryption method and a passive optical network physical layer data encryption device. The method comprises the steps: carrying out the serial-parallel conversion of physical layer data, and obtaining parallel physical layer data; performing modulation processing on the parallel physical layer data by using three modulation modes to obtain three modulation signals corresponding to the three modulation modes after modulation, wherein the three modulation modes are an 8PSK modulation mode, a 16QAM modulation mode and a 32QAM modulation mode; and based on a chaotic encryption algorithm, performing encryption processing on the three modulation signals to obtain encrypted modulation signals. According to the invention, the physical layer data is modulated in various modulation modes. The modulation signal is subjected to chaotic encryption processing, so that the data security can be effectively improved. The resource utilization rate is improved.
Description
technical field [0001] The invention relates to the technical field of passive optical networks, in particular to a method and device for encrypting physical layer data of a passive optical network. Background technique [0002] With the exponential growth of network traffic, passive optical network has become the preferred technical solution to solve the bandwidth service demand due to its excellent performance such as high capacity, low cost and high performance. Due to the broadcast nature of the passive optical network in downlink services, illegal optical network units can easily obtain user data, resulting in serious data security issues in the architecture of the passive optical network. Encrypting the physical layer data of the passive optical network can improve data security. The current physical layer data encryption method generally only uses one modulation method, the spectrum utilization rate is not high, and the data security is not high. Contents of the inv...
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IPC IPC(8): H04L9/00H04B10/85H04L27/32
CPCH04B10/85H04L9/001H04L27/32
Inventor 张杰李亚杰赵瑛琪赵永利张会彬雷超宋浩鲲
Owner BEIJING UNIV OF POSTS & TELECOMM