Traceable attribute-based anonymous authentication method and system and storage medium
An anonymous authentication and traceable technology, applied in transmission systems, digital transmission systems, user identity/authority verification, etc., can solve problems such as registration information interception and privacy leakage
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[0063] Such as figure 1 As shown, in the present invention, a traceable attribute-based anonymous authentication method comprises the following steps:
[0064] S1, system initialization, generate the master public key and the master private key by setting the algorithm, in this embodiment, specifically:
[0065] S11, system initialization, specifically:
[0066] Let Cre = (Cre.Setup, Cre.Gen, Cre.Verify) be an anonymous credential scheme with attributes;
[0067] Cre.Setup is the setup algorithm of the Cre scheme, specifically Cre.Setup(λ)→(pk,msk), input the security parameter λ, output the public parameter pk and the master private key msk, which are used to initialize the anonymous credential scheme;
[0068] Cre.Gen is the certificate generation algorithm of the Cre scheme, which is used to generate the user's anonymous credentials. Specifically, the common input of the user and the certificate authority is the public parameter pk and the commitment C i =Commit(L i ,r ...
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