The invention relates to a multi-code fusion method and
system, and solves the problem that a
user needs to frequently switch different two-dimensional codes to adapt to various scenes in the interaction process with a city
service system.The method comprises the steps that the
system is started to analyze heterogeneous features of an original code, and a standardized
feature set with a cryptographic identifier is generated; and performing hierarchical fusion to generate a fusion code prototype and a behavior credit chain, performing
verification to form a formal fusion code, and calculating an initial credit entropy. Bidirectional
verification is executed during terminal
verification, and a minimum transaction
voucher is generated after
scene matching. If successful, starting the fusion code, recording the transaction and dynamically adjusting the authority; and if not, triggering a hierarchical security response, generating a security sub-
voucher or switching to the original code for operation. The offline scene generates an offline code. The method has the following effects: through dynamic authority and credit management, on the premise of not sacrificing security, one fusion code is used for replacing a plurality of scene codes, and unification of convenience and security is realized.