Data encryption and key generation method for online payment

Abstract

The application relates to the technical field of key generation, in particular to a data encryption and key generation method for online payment, which comprises the following steps: extracting a touch rhythm to generate a sequence, performing round encoding to construct a bit structure, and combining amount information to generate a key. In the application, user touch behavior characteristics are converted into a rhythm sequence, a dynamic encryption basis is constructed through sequence rotation and bit mapping mode, a user behavior level parameter is introduced in the key generation process, payment behavior and transaction data are deeply bound by fusing amount section labels, the key generation no longer depends on fixed rules or external key negotiation process, independent key output on the terminal side is realized through sequence structure reorganization and template parameter matching, the individuality and unpredictability of the key are improved, the identification ability for imitated behavior and the protection effect for man-in-the-middle attack are enhanced, and the problems of static characteristics and response lag of the traditional key mechanism in actual deployment are effectively alleviated.

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