Remote data integrity verification method based on short signature
An integrity verification, remote data technology, applied in the field of data integrity verification, can solve problems such as user data threats, achieve high signature efficiency, prevent leakage or forgery, and reduce computational overhead and communication overhead.
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[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and the experimental conditions of the embodiments.
[0037] Please refer to figure 1 , The described method includes the following 5 algorithms:
[0038] 1. When users need to store a large amount of data on the cloud storage server, they need to initialize the system parameters and generate a secret key pair, KeyGen(k)→(pk,sk): the client enters the security parameter k and outputs the user's public key pk, private key sk. Public pk, private key sk is kept by the user. This step can be pre-processed before the signature verification, saving verification time.
[0039] 2. Then, the user executes the signature generation algorithm SigGen(sk,m)→σ, uses the private key generated in the previous step to sign the input file m, and generates the signature set σ of the dat...
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