Method and system for distributing key

Abstract

The invention discloses a method and a system for distributing a key. The method comprises the following steps that: a card issuer management platform informs a sub-security domain corresponding to an application provider of generating a public-private key pair including a public key and a private key in an intelligent card, receiving the public key returned from the sub-security domain, introducing a trusty root public key for external authentication into the sub-security domain and sending information of the sub-security domain and the public key to the application provider management platform; the application provider management platform receives the information of the sub-security domain and the public key from the card issuer management platform and selects the sub-security domain of the intelligent card via a service terminal according to the information of the sub-security domain and the public key; and the application provider management platform informs the sub-security domain of regenerating the public key and the private key, generates a sub-security domain certificate according to the regenerated public key returned from the sub-security domain, and completes distribution of the sub-security domain key by sending the sub-security domain certificate to the sub-security domain.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a key distribution method and system. Background technique [0002] In related technologies, near field communication technology (Near Field Communication, referred to as NFC) is a short-range wireless communication technology working at 13.56MHz, which consists of radio frequency identification (Radio Frequency Identification, referred to as RFID) technology and interconnection Technological convergence evolved. After integrating NFC technology, mobile communication terminals such as mobile phones can simulate non-contact IC cards for electronic payment related applications; in addition, to implement this solution on mobile communication terminals, NFC analog front-end chips and NFC antennas need to be added to the terminals. And use a smart card that supports electronic payments. [0003] After more than ten years of development, IC cards, especially non-contact IC card...

AI Technical Summary

Problems solved by technology

[0010] In consideration of the problem in the related art that the distribution of the key from the security domain is insecure due to the fact that the card issuer management platform is responsible for the transmission of the key data, the key data in the security domain can be obtained, and the present invention is proposed. The main purpose of the invention is to provide a key distribution method and system to solve the above-mentioned problems in related technologies

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