The invention particularly relates to an anonymous
voucher identifier privacy generation method associated with user identity information. The method comprises the steps that a user generates a Pedersen commitment; the user sends the Pedersen commitment to a user identity information provider for
verification and signature; the user broadcasts the signed Pedersen commitment to all members of the
voucher issuing committee, and sends the identity information fragments to each member of the committee through a
secure channel; the committee member verifies the
correctness of the identity information fragment and jointly calculates an anonymous
certificate identifier; the committee checks the uniqueness of the anonymous
voucher identifier, and if the identifier exists, the process is stopped; if not, storing the identifier into the
data structure and continuously issuing the anonymous
certificate; and when a malicious user is found, the fragment information is aggregated to recover the identity of the user by disclosing the fragment information and verifying the
correctness of the fragment. According to the method, the unique binding of the anonymous
certificate and the user identity information can be realized on the premise of not leaking the
user information, and the identity
Sybil attack is effectively resisted.