具体实施方式detailed description

下面结合图1对本发明作进一步说明。The present invention will be further described below in conjunction with FIG. 1 .

如图1所示，本发明总体框图包括计算机、485（1）、485（2）、由T1、T2、R1、R2、R3、R4组成的电平转换电路，FPGA及程序存储器，所述计算机通过串行口与485（1）串口连接，所述485（1）与485（2）之间进行� �准总线连接，所述485（2）串口与与电平转换电路连接，解决信号不匹配，保证电路正常工作，所述电平转换电路分别与FPGA中的I/O口连接，所述FPGA与USB串口连接，所述FPGA中的Ncs、data、asdi 及 dclk信号口分别与程序存储器中的Ncs、data、asdi 及 dclk信号口一一对应连接，所述 5V电源与485（2）供电管脚连接，所述3.3V电源分别与FPGA及程序存储器供电管脚连接。工作过程如下：将数据存到计算机存储器内，通过485（1）、485（2），把数据� 送到FPGA中，FPGA依据程序，并利用任意进制数计算公式（1）p=cu+w选择c值，计算出u和w值，并把原数据地址和c、u、w值保存到线性表内，同时将数据隐藏到c、u、w表示的三维数据表内，得到三维� 密数据表，然后把� 密三维数据表与线性表一起通过USB口� 送到网络中。下面分步进行详细说明：As shown in Figure 1, the general block diagram of the present invention includes computer, 485 (1), 485 (2), the level conversion circuit that is made up of T1, T2, R1, R2, R3, R4, FPGA and program memory, described computer The serial port is connected to the 485 (1) serial port, the standard bus connection is made between the 485 (1) and 485 (2), and the 485 (2) serial port is connected to the level conversion circuit to solve the signal mismatch. Guarantee the normal operation of the circuit, the level conversion circuit is connected with the I/O port in the FPGA respectively, the FPGA is connected with the USB serial port, and the Ncs, data, asdi and dclk signal ports in the FPGA are connected with the program memory respectively The Ncs, data, asdi and dclk signal ports are connected one by one, the 5V power supply is connected to the 485 (2) power supply pins, and the 3.3V power supply is connected to the FPGA and program memory power supply pins respectively. The working process is as follows: store the data in the computer memory, and transmit the data to the FPGA through 485 (1) and 485 (2), and the FPGA uses the arbitrary number calculation formula (1) p=cu+w according to the program Select the value of c, calculate the value of u and w, and save the original data address and the values of c, u, and w in the linear table, and at the same time hide the data in the three-dimensional data table represented by c, u, and w to obtain the three-dimensional encrypted data table, and then transmit the encrypted three-dimensional data table together with the linear table to the network through the USB port. The following step-by-step detailed instructions:

第一步，计算机将数据存放到计算机内存RAM中，并将数据进行有序排列，然后把需要� 密数字和� 密数字地址长度，通过485（1）串口转变成电流形式进行发送，由485（2）串口接收数字，由于485串口电压（5v）与FPGA（3.3v）工作电压不同，需要一个电平转换电路，T1与FPGA的接收端相连接，将5v输出电平转换成3.3v电平，T2与FPGA发送端相连接，将3.3v电平转换成5v电平，FPGA接收到计算机� 送的� 密数字和� 密数字地址长度信息后，� �据公式（1）P=cu+w计算c、u、w参数，具体实现方法为，把需要� 密数字P用二进制表示，把P分成上、下两部分，一部分为字的上半部分，另一部分为字的下半部分，上半部分字与“0”相与，下半部分与“1”相与，下半部分得到不变的原数据下半部分数字，而上半部分得到0，令下半部分数字等于c，再利用公式（1）得u=P/c 取整数作为u的解，余数为w，计算出c、u、w后，令X（c，u，w）=P，此时把数据隐藏到三维坐� �X（c，u，w）点中，这� �计算所有需要� 密的数据，会得到一个用三维坐� �表示的� 密存储方式数据。In the first step, the computer stores the data in the RAM of the computer memory, arranges the data in an orderly manner, and then converts the encrypted number and the length of the encrypted number address through the 485 (1) serial port into a current form for transmission, and the 485 (2 ) The serial port receives numbers. Since the 485 serial port voltage (5v) is different from the FPGA (3.3v) working voltage, a level conversion circuit is required. T1 is connected to the receiving end of the FPGA to convert the 5v output level to 3.3v level. T2 is connected to the sending end of the FPGA to convert the 3.3v level into a 5v level. After the FPGA receives the encrypted number and the encrypted number address length information transmitted by the computer, it calculates c, u, The specific implementation method of the w parameter is to represent the number P to be encrypted in binary, and divide P into upper and lower parts. One part is the upper part of the word, and the other part is the lower part of the word. " and, the lower part is ANDed with "1", the lower part gets the lower part of the original data unchanged, and the upper part gets 0, and the lower part is equal to c, then use the formula (1) to get u=P/c Take an integer as the solution of u, and the remainder is w. After calculating c, u, and w, set X(c, u, w) = P, and hide the data at the three-dimensional coordinates X(c, u , w) point, in this way all the data that needs to be encrypted will be calculated, and an encrypted storage data represented by three-dimensional coordinates will be obtained.

第二步，对三维坐� �空间的选定，若� 密数字地址长度设为D，则三维坐� �取值范围为F=，其中D取值最好是能被开立方的数字，如果� 密数字地址长度不满足开立方要求，会出现两种情况，一种是三维座� �空间单元个数大于数字地址长度表示的个数，只需要计算c、u、w即可实现� 密，另一种情况为，三维座� �空间单元个数小于数字地址长度表示的个数，此时需要增� 三维座� �空间，增� 座� �空间方法为，利用公式（2）N=2^k（2m-1）代入公式（1）P=cu+w中，得到参数c_k、c_m、u_k、u_m、w_k、w_m，只要把参数c_k、c_m、u_k或u_m、w_k、w_m作为三维空间扩展座� �，就可以得到扩� � 密空间。In the second step, for the selection of the three-dimensional coordinate space, if the length of the encrypted digital address is set to D, the value range of the three-dimensional coordinates is F= , where the value of D is preferably a number that can be cubed. If the length of the encrypted digital address does not meet the requirements of the cube, there will be two situations. One is that the number of three-dimensional coordinate space units is greater than the number indicated by the length of the digital address , only need to calculate c, u, w to realize encryption. In another case, the number of units in the three-dimensional coordinate space is less than the number indicated by the length of the digital address. At this time, it is necessary to increase the three-dimensional coordinate space, and the method of increasing the coordinate space For, use formula (2) N=2 ^k (2m-1) to substitute into formula (1) P=cu+w to get parameters c _k , c _m , u _k , u _m , w _k , w _m , as long as The parameters c _k , c _m , u _k or u _m , w _k , w _m are taken as the three-dimensional space expansion coordinates, and the expanded and encrypted space can be obtained.

第三步，建立� 密数字存放三维座� �与原数字存放地址线性表，建立线性表十分重要，在非线性� 密中是一个不可缺少的环节，而三维参数c、u、w座� �和数字存放地址是一一对应关系，具体实现方法为，� �据数字计算的参数c、u、w，将数字存放到三维座� �空间内，同时将参数与这个原数字存放地址合并成一个线性表，按照这个次序，将所有� 密数字中的参数和本身原数据存放的地址进行合并，得到一� 线性表，这个表作为� 密时使用。The third step is to establish a linear table of the three-dimensional coordinates of encrypted numbers and the address of original numbers. It is very important to establish a linear table, which is an indispensable link in nonlinear encryption. The three-dimensional parameters c, u, w coordinates and digital storage The address is a one-to-one correspondence. The specific implementation method is to store the number in the three-dimensional coordinate space according to the parameters c, u, and w calculated by the number, and at the same time combine the parameters and the original number storage address into a linear table. According to this In order, the parameters in all encrypted numbers are combined with the address where the original data is stored to obtain a linear table, which is used for encryption.

第四步，数据� 密后，得到一� 线性表和一个三维数据� 密表示的存储空间，将这两部分数据通过USB口� 送到网上，达到最终� 密的目的。In the fourth step, after data encryption, a linear table and a three-dimensional data encrypted storage space are obtained, and these two parts of data are transmitted to the Internet through the USB port to achieve the purpose of final encryption.

本发明的� 密方法优点在于：它具有计算公式简单、� 密参数多、计算参数不会出现小数，克服了以往非对称� 密计算公式复杂和受字长限制以及易出现小数的不足。The encryption method of the present invention has the advantages of simple calculation formula, many encryption parameters, and no decimals in the calculation parameters, which overcomes the disadvantages of complex calculation formulas of asymmetric encryption, limitation of word length and easy occurrence of decimals in the past.