CN118158660A - Multi-source hydrologic data transmission abnormality detection and protection method - Google Patents
Multi-source hydrologic data transmission abnormality detection and protection method Download PDFInfo
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Abstract
The invention relates to the field of data security processing of intelligent hydrologic systems, and discloses a method for detecting and protecting abnormal data transmission based on multi-source hydrologic data. Eliminating complex public key certificate management also avoids key escrow by the key generation center. Meanwhile, the method designs the certificate-free homomorphic digital signature by adopting the homomorphic hash function, and reduces the system safety management and maintenance cost.
Description
Technical Field
The invention relates to the field of data security processing of intelligent hydrologic systems, in particular to a multisource hydrologic data transmission abnormality detection and protection method.
Background
With the rapid development of new generation information technologies such as cloud computing, big data, internet of things, artificial intelligence and the like, an intelligent hydrologic system enables important decisions of hydrologic information to become more intelligent. The intelligent hydrologic system is mainly used for monitoring hydrologic information such as water level, flow, rainfall condition and the like in real time through an intelligent sensor and data acquisition equipment under a wireless sensor network environment and uploading the data to an intelligent hydrologic system platform.
The intelligent hydrologic system platform can realize real-time monitoring, analysis and processing of historical hydrologic data, predicts future hydrologic conditions through machine learning and artificial intelligence technology, provides decision support for flood control and disaster reduction, realizes real-time monitoring and response to flood disasters, and improves the efficiency and accuracy of flood control and disaster reduction. Therefore, the intelligent hydrologic system provides powerful support for water resource management and protection, and makes important contributions to the aspects of building intelligent cities, optimizing water resource utilization and the like.
Although the intelligent hydrologic system improves the processing and analysis capacity of the system big data and achieves the effect of system management refinement, potential information security threat is generated. Because the distributed terminal sensor devices are deployed in the intelligent hydrologic system, the intelligent hydrologic key sensitive data are collected regularly, and even the intelligent hydrologic system platform makes important analysis decisions based on the key data. If key data indexes are leaked in the process of transmitting key data from terminal sensor equipment to an intelligent hydrologic system platform in a wireless sensor network environment, the key data indexes are tampered or lost, so that data abnormality is caused, the inaccuracy of intelligent hydrologic system data analysis can be influenced, a serious misjudgment event is generated, and serious economic loss is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multisource hydrological data transmission abnormality detection and protection method.
The aim of the invention is realized by the following technical scheme:
the invention provides a multisource-based hydrological data transmission abnormality detection and protection method, which comprises the following steps:
s1, initializing a system, wherein a key generation center generates public parameters for an intelligent hydrologic system, the public parameters comprise a multiplication cyclic group, a generation element, a public group element, a bilinear pair mapping, an anti-collision hash function, a homomorphic hash function and a system main public key, and the system main private key is generated by the key generation center and is safely stored;
S2, generating a public and private key of a certificateless cryptographic system, wherein terminal sensor equipment of the intelligent hydrologic system interacts with a key generation center to generate anonymized identity marks of the terminal sensor equipment and a corresponding partial signature private key;
s3, transmitting the multi-source hydrological data for anomaly detection, wherein the terminal sensor equipment generates corresponding encrypted data for the collected multi-dimensional intelligent hydrological data file and generates homomorphic digital signature based on a certificate-free cryptosystem;
s4, carrying out abnormal verification on multi-source hydrological data transmission, and converging an encrypted data file and a signature set thereof of key multi-dimensional hydrological parameter data generated by the terminal sensor equipment to an intelligent hydrological system platform through a wireless sensor network by the intelligent hydrological system, and carrying out integrity detection.
Further, the step S1 includes the steps of:
S11, key Generation center setting Order multiplication cycle group/>，/>For big prime number, choose/>Is generated by the generation element/>And fromRandomly selects one public group element/>；
S12, setting a bilinear pair mapping in the key generation centerWherein/>Also/>A cyclic group of order multiplications;
S13, key generation center slave Order finite field/>Randomly selecting a non-zero element/>As a system master private key, a corresponding system master public key/>, is calculated；
S13, setting two safe anti-collision hash functions by the key generation center:， Here/> Representing a hash function/>Output length of (1)/>, hereRepresentation/>A cyclic group of order multiplications; in addition, the key generation center sets a homomorphic hash function/>；
S14, the key generation center publishes system disclosure parametersAnd secretly store the system master private key/>。
Further, the step S2 includes the steps of:
S21, terminal sensor equipment slave Order finite field/>In secret selecting a non-zero element/>Calculate registration credentials/>Registration information/>, is then sent to the key generation center over the secure channelWherein/>Is the identity of the terminal sensor device;
s22, the key generation center receives the registration information of the terminal sensor equipment Then, calculating the corresponding anonymized identity mark/>Wherein/>The method is the validity period of anonymized identity identification use of the terminal sensor equipment;
S23, key generation center slave Order finite field/>In secret selecting a non-zero element/>Calculating and generating a first component/>, of a signature private key of a terminal sensor deviceAnd a first component of the public keyAnd; the key generation center transmits the four-tuple information/>, through the secure channelGiving the terminal sensor device;
s24, when receiving the transmission from the key generation center The end sensor device will then go through the equation/>Validating the four-tuple information/>Is the integrity of (1); if the above equation is verified, the terminal sensor device accepts the four-tuple information/>Otherwise, requesting the key generation center to re-execute the step;
S25, the terminal sensor device is further from Order finite field/>In secret selecting a non-zero element/>As a second component of the signature private key, and calculates/>A second component that is a public key;
s26, the terminal sensor equipment obtains a complete signature private key based on a certificateless cryptographic system And the corresponding full public key/>。
Further, the step S3 includes the steps of:
S31, the terminal sensor device represents the n-dimensional intelligent hydrologic data file M as WhereinFor each dimension of data parameters, lightweight symmetric encryption algorithm/>, is utilizedGenerating a multidimensional intelligent hydrological data file/>Corresponding ciphertext data File/>Wherein the data parameters for each dimension and corresponding ciphertext data block/>Where i represents the subscript of the data dimension;
S32, for each ciphertext data block Terminal sensor device utilizes a complete signature private key/>, based on a certificateless cryptographic systemGenerating corresponding homomorphic signature blocksHere/>Is the corresponding ciphertext data block/>Is a label of (2); the terminal sensor device will generate ciphertext data file/>The corresponding homomorphic signature sets are expressed as；
S33, the terminal sensor device sends the encrypted data file and the signature set thereofAnd performing anomaly detection and safe storage on the intelligent hydrologic system platform.
Further, the step S4 includes the steps of:
S41, integrity detection: ; if the above equation test passes, it is indicated that the transmission process of the encrypted data file of all the key hydrological parameter data is not subject to abnormal conditions such as tampering;
s42, if the equation test is not passed, the intelligent hydrologic system platform performs the test on each ciphertext data block And its corresponding digital signature/>Abnormality detection is performed one by one according to the following equation:
。
the beneficial effects of the invention are as follows:
1) The invention collects multidimensional sensitive data through the wireless sensor network, designs homomorphic signature algorithm based on a certificate-free cryptosystem, generates ciphertext corresponding to multidimensional key hydrologic data and corresponding homomorphic signature, realizes confidentiality protection of data transmission, and simultaneously realizes abnormal detection of system data batch transmission and malicious tampering protection of data;
2) By designing the certificateless cryptosystem, complex public key certificate management is canceled, and key escrow of a key generation center is avoided.
3) The invention designs the certificate-free homomorphic digital signature by adopting the homomorphic hash function, reduces the system safety management and maintenance cost, designs the identity anonymization of the terminal sensor equipment, and realizes the protection of sensitive identities.
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Fig. 1 is a specific flowchart of a method for detecting and protecting abnormal transmission of multi-source hydrological data according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Illustratively, the specific flow of the present invention is shown in FIG. 1, which includes the following four stages: the system initialization step, public and private key generation of the certificateless cryptographic system, multisource hydrological data transmission supporting anomaly detection and multisource hydrological data transmission anomaly verification.
System initialization phase: the key generation center generates public parameters for the intelligent hydrologic system, including the set multiplication loop group and its generating element, public group element, bilinear pair mapping, anti-collision hash function, homomorphic hash function and system main public key. Further, key generation center settingsOrder multiplication cycle group/> ，/>For big prime number, choose/>Is generated by the generation element/>And from/>Randomly selects one public group element/>The key generation center sets a bilinear pair mappingWherein/>Also/>Order multiplication loop group, key generation center slave/>Order finite field/>Randomly selecting a non-zero element/>As a system master private key, a corresponding system master public key/>, is calculatedThe key generation center sets two secure collision-resistant hash functions: /(I)Here/>Representing a hash function/>Is used for the output length of the (c) a,Here/>Representation/>And (3) a cyclic group of order multiplication. In addition, the key generation center sets a homomorphic hash function/>. Finally, the key generation center publishes system public parameters/>And secretly store the system master private key/>。
Public and private key generation of a certificate-free cryptosystem: the terminal sensor device of the intelligent hydrologic system generates registration credentials and sends the registration information to the key generation center through a secure channel. After receiving the registration information of the terminal sensor device, the key generation center calculates the anonymized identity of the terminal sensor device, further generates a first component of a signature private key and a first component of a public key of the terminal sensor device by using a system main private key, and sends the first component and the first component of the public key to the terminal sensor device through a secure channel. The terminal sensor device first verifies the validity of the first component of the signature private key and further generates a second component of the signature private key and a second component of the public key. Finally, the terminal sensor device obtains the complete private and public signature keys. The specific process is as follows:
Terminal sensor device slave Order finite field/>In secret selecting a non-zero element/>Calculating registration credentialsRegistration information/>, is then sent to the key generation center over the secure channelWherein/>Is the identity of the terminal sensor equipment, and the key generation center receives the registration information/>, of the terminal sensor equipmentThen, calculating the corresponding anonymized identity mark/>(Wherein/>Is the validity period of the anonymized identity usage of the terminal sensor device) and then the key generation center is from/>Order finite field/>In secretly selecting a non-zero elementCalculating and generating a first component/>, of a signature private key of a terminal sensor deviceAnd a first component/>, of the public keyAnd, a method for producing the same. The key generation center transmits the four-tuple information/>, through the secure channelTo the terminal sensor device, upon receipt of the/>, transmitted from the key generation centerThe end sensor device will then go through the equation/>Validating the four-tuple information/>Is described herein). If the above equation is verified, the terminal sensor device accepts the four-tuple information/>Otherwise, the key generation center is requested to re-execute the step, and the terminal sensor device further receives from/>Order finite field/>In secret selecting a non-zero element/>As a second component of the signature private key, and calculates/>As a second component of the public key, finally, the terminal sensor device obtains the complete signature private key/>, based on a certificateless cryptographic systemAnd the corresponding full public key/>。
Multisource hydrological data transmission supporting anomaly detection: the terminal sensor device utilizes a lightweight symmetric encryption algorithm to generate a corresponding ciphertext data file from the multidimensional intelligent hydrologic data file. The terminal sensor device generates homomorphic signature blocks of corresponding ciphertext data blocks using a complete signature private key based on a certificateless cryptographic system. The terminal sensor equipment sends the encrypted data file and the signature set thereof to the intelligent hydrologic system platform for abnormality detection and safe storage. The method comprises the following specific steps: the terminal sensor device represents the n-dimensional intelligent hydrologic data file M asWherein/>For each dimension of data parameters, a lightweight symmetric encryption algorithm is utilized to generate a multidimensional intelligent hydrological data fileCorresponding ciphertext data File/>Wherein the data parameters for each dimension and corresponding ciphertext data block/>Where i represents the subscript of the data dimension, for each ciphertext data block/>Terminal sensor device utilizes a complete signature private key based on a certificateless cryptographic systemGenerating corresponding homomorphic signature block/>Here, whereIs a tag corresponding to the ciphertext data block. Ciphertext data file to be generated by the terminal sensor deviceThe corresponding homomorphic signature set is denoted/>The terminal sensor device sends the encrypted data file and its signature set/>And performing anomaly detection and safe storage on the intelligent hydrologic system platform.
Multisource hydrologic data transmission anomaly verification: the intelligent hydrologic system gathers the encrypted data file of key multidimensional hydrologic parameter data and signature set thereof generated by the terminal sensor equipment to an intelligent hydrologic system platform through a wireless sensor network, and carries out integrity detection through a batch anomaly detection equation. If the batch anomaly detection equation test is passed, the encrypted data file transmission process of all the key hydrological parameter data is indicated to be free from anomalies such as tampering. If the equation test fails, the intelligent hydrologic system platform performs integrity detection on each ciphertext data block and the corresponding digital signature according to the anomaly detection equation one by one and performs integrity detection by the following batch anomaly detection equations: ; if the above equation test passes, it is indicated that the transmission process of the encrypted data file of all the key hydrological parameter data is not subject to abnormal conditions such as tampering. If the above equation test fails, the intelligent hydrologic system platform/>, for each ciphertext data block And its corresponding digital signature/>Abnormality detection is performed one by one according to the following equation:
；
the correctness analysis process based on the multisource hydrological data transmission anomaly detection and protection method is as follows:
Upon receipt of a transmission from a key generation center The end sensor device will then go through the equation/>Validating the four-tuple information/>Is described herein). The following is the equation derivation process:
; batch anomaly detection equation This equation is correctly derived as follows:
；
the intelligent hydrologic system platform is used for each ciphertext data block And its corresponding digital signature/>Abnormality detection is performed one by one according to the following equation:
；
The correctness of this equation is deduced as follows:
。
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (5)
1. The method for detecting and protecting the transmission abnormality of the hydrologic data based on the multiple sources is characterized by comprising the following steps:
s1, initializing a system, wherein a key generation center generates public parameters for an intelligent hydrologic system, the public parameters comprise a multiplication cyclic group, a generation element, a public group element, a bilinear pair mapping, an anti-collision hash function, a homomorphic hash function and a system main public key, and the system main private key is generated by the key generation center and is safely stored;
S2, generating a public and private key of a certificateless cryptographic system, wherein terminal sensor equipment of the intelligent hydrologic system interacts with a key generation center to generate anonymized identity marks of the terminal sensor equipment and a corresponding partial signature private key;
s3, transmitting the multi-source hydrological data for anomaly detection, wherein the terminal sensor equipment generates corresponding encrypted data for the collected multi-dimensional intelligent hydrological data file and generates homomorphic digital signature based on a certificate-free cryptosystem;
s4, carrying out abnormal verification on multi-source hydrological data transmission, and converging an encrypted data file and a signature set thereof of key multi-dimensional hydrological parameter data generated by the terminal sensor equipment to an intelligent hydrological system platform through a wireless sensor network by the intelligent hydrological system, and carrying out integrity detection.
2. The method for detecting and protecting abnormal transmission of multi-source-based hydrological data according to claim 1, wherein the step S1 comprises the steps of:
S11, key Generation center setting Order multiplication cycle group/>，/>For big prime number, choose/>Is generated by the generation element/>And from/>Randomly selects one public group element/>；
S12, setting a bilinear pair mapping in the key generation centerWherein/>Also/>A cyclic group of order multiplications;
S13, key generation center slave Order finite field/>Randomly selecting a non-zero element/>As a system master private key, a corresponding system master public key/>, is calculated；
S13, setting two safe anti-collision hash functions by the key generation center:， Here/> Representing a hash function/>Output length of (1)/>, hereRepresentation/>A cyclic group of order multiplications; in addition, the key generation center sets a homomorphic hash function/>；
S14, the key generation center publishes system disclosure parametersAnd secretly store the system master private key/>。
3. The method for detecting and protecting abnormal transmission of multi-source-based hydrological data according to claim 2, wherein the step S2 comprises the steps of:
S21, terminal sensor equipment slave Order finite field/>In secret selecting a non-zero element/>Calculating registration credentialsRegistration information/>, is then sent to the key generation center over the secure channelWherein/>Is the identity of the terminal sensor device;
s22, the key generation center receives the registration information of the terminal sensor equipment Then, calculating the corresponding anonymized identity mark/>Wherein/>The method is the validity period of anonymized identity identification use of the terminal sensor equipment;
S23, key generation center slave Order finite field/>In secret selecting a non-zero element/>Calculating and generating a first component/>, of a signature private key of a terminal sensor deviceAnd a first component/>, of the public keyAnd; the key generation center transmits the four-tuple information/>, through the secure channelGiving the terminal sensor device;
s24, when receiving the transmission from the key generation center The end sensor device will then go through the equation/>Validating the four-tuple information/>Is the integrity of (1); if the above equation is verified, the terminal sensor device accepts the four-tuple information/>Otherwise, requesting the key generation center to re-execute the step;
S25, the terminal sensor device is further from Order finite field/>In secret selecting a non-zero element/>As a second component of the signature private key, and calculates/>A second component that is a public key;
s26, the terminal sensor equipment obtains a complete signature private key based on a certificateless cryptographic system And the corresponding full public key/>。
4. The method for detecting and protecting abnormal transmission of multi-source-based hydrological data according to claim 3, wherein the step S3 comprises the steps of:
S31, the terminal sensor device represents the n-dimensional intelligent hydrologic data file M as WhereinFor each dimension of data parameters, lightweight symmetric encryption algorithm/>, is utilizedGenerating a multidimensional intelligent hydrological data file/>Corresponding ciphertext data File/>Wherein the data parameters for each dimension and corresponding ciphertext data block/>Where i represents the subscript of the data dimension;
S32, for each ciphertext data block Terminal sensor device utilizes a complete signature private key/>, based on a certificateless cryptographic systemGenerating corresponding homomorphic signature block/>Here/>Is the corresponding ciphertext data block/>Is a label of (2); the terminal sensor device will generate ciphertext data file/>The corresponding homomorphic signature set is denoted/>；
S33, the terminal sensor device sends the encrypted data file and the signature set thereofAnd performing anomaly detection and safe storage on the intelligent hydrologic system platform.
5. The method for detecting and protecting abnormal data transmission based on multi-source hydrologic data according to claim 4, wherein said step S4 comprises the steps of:
S41, integrity detection: ; if the above equation test passes, it is indicated that the transmission process of the encrypted data file of all the key hydrological parameter data is not subject to abnormal conditions such as tampering;
s42, if the equation test is not passed, the intelligent hydrologic system platform performs the test on each ciphertext data block And its corresponding digital signature/>Abnormality detection is performed one by one according to the following equation:
。
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