Financial electronic equipment main key online distribution method and system

Abstract

The invention provides a financial electronic equipment main key online distribution method and system. The method comprises the following steps: a financial mechanism transmits a public key to a manufacturer; the manufacturer transmits first signature information obtained according to a second private key and a first public key, and a second public key to the financial mechanism; the electronic equipment transmits a third public key to the manufacturer and the financial mechanism; the manufacturer transmits the second signature information obtained according to the second private key and a third public key, and the second public key to the electronic equipment and the financial mechanism; the financial mechanism transmits the third signature information obtained according to the first private key and the main key ciphertext, main key ciphertext obtained by encrypting a main key generated by utilizing the third public key after the signature verifying is passed, the first public key, the first signature information and a first main key check value to the electronic equipment; the electronic equipment obtains the main key by utilizing the third private key after verifying the signature information, computes to obtain a second main key check value to compare with the first main key check value, and stores the main key when the second main key check value is consistent with the first main key check value. Through the scheme provided by the invention, the security and the efficiency of the main key transmission between the electronic equipment and the financial mechanism is improved.

Description

technical field [0001] The invention relates to the technical field of financial key distribution, in particular to a method and system for online distribution of financial electronic device master keys. Background technique [0002] The asymmetric encryption algorithm is a kind of key encryption algorithm, and the common asymmetric encryption algorithms are mainly the international algorithm RSA and the national secret algorithm SM2. An asymmetric encryption algorithm requires two keys: a public key (referred to as: public key) and a private key (referred to as: private key). A public key and a private key are a pair. If encrypted with a public key, only the corresponding private key can be decrypted; if encrypted with a private key, only the corresponding public key can be decrypted. [0003] The distribution schemes of traditional financial electronic equipment master keys are all carried out offline. The main process is usually: a device master key (TMK) is generated ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and system for online distribution of master keys of financial electronic equipment, which solves the technical problems of insufficient security and low efficiency of master key transmission between financial electronic equipment and financial institutions

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