Method and system for anti-tampering encryption and decryption of remote control telemetry information based on hybrid cipher
A technology of telemetry information and mixed encryption, which is applied in the field of information security, can solve the problems of slow encryption and decryption and high complexity, and achieve the effects of alleviating the high complexity of algorithms, reducing the time of encryption and decryption, and reducing the complexity of operations
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Embodiment 1
[0025] The traditional satellite communication encryption method generally uses the asymmetric encryption algorithm RSA to carry out digital signatures, and the asymmetric encryption algorithm involves large number operations, and the high complexity of the algorithm causes the encryption and decryption speed to be very slow. In view of this, the present invention A tamper-proof encryption method for remote control telemetry information based on mixed cipher is provided.
[0026] figure 1 It is a flow chart of a method for anti-tampering encryption of remote control and telemetry information based on a hybrid cipher provided according to an embodiment of the present invention, and the method is applied to a satellite communication system. Such as figure 1 As shown, the method specifically includes the following steps:
[0027] Step S102, using the target sequence cipher algorithm to encrypt the target data to obtain the initial ciphertext; the target data is satellite remote...
Embodiment 2
[0048] figure 2 It is a flow chart of a method for anti-tampering decryption of remote control and telemetry information based on a hybrid cipher provided according to an embodiment of the present invention, and the method is applied to a satellite communication system. Such as figure 1 As shown, the method specifically includes the following steps:
[0049] Step S202, obtaining a target encrypted sequence, wherein the target encrypted sequence is a sequence obtained by using the method in the first embodiment above.
[0050] Step S204, splitting the target encrypted sequence to obtain the ciphertext to be decrypted and the target message authentication code.
[0051] Step S206, based on the attribute information of the ciphertext to be decrypted, use the target hash cipher algorithm to generate a second hash value; the attribute information includes at least one of the following: data flow direction, sender ID, ciphertext sequence, time stamp; target hash cipher algorithm ...
Embodiment 3
[0064] The embodiment of the present invention takes the ZUC algorithm and the SM3 cryptographic hash algorithm as examples to illustrate the specific implementation of the hybrid cipher-based remote control telemetry information tamper-proof encryption method and decryption method provided in the first and second embodiments.
[0065] image 3 It is a schematic diagram of a satellite remote control telemetry data encryption process provided according to an embodiment of the present invention. Such as image 3 As shown, the encryption process includes the following steps:
[0066] Step S31, the 128bit initial key and the 128bit initial vector are loaded into the ZUC initialization algorithm, and the ZUC algorithm is initialized;
[0067] Step S32, the ZUC algorithm enters the working stage after initialization, and generates A 32bit key word stream;
[0068] Step S33, use the key word stream to encrypt the plaintext of the satellite remote control telemetry data word by w...
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