Method for remotely issuing POS key

Abstract

The present invention discloses a method for remotely issuing a POS key, comprising the following steps in sequence: S1. a POS terminal uploads a request to acquire a public key to a management platform, and the management platform issues the public key to a POS machine; S2. the POS machine generates a transmission key at random, encrypts same using the public key, and uploads same to the management platform, and the management platform decrypts and verifies same using a private key; S3. after the transmission key passes validation, the management platform decrypts same to obtain transmission key plaintext, encrypts a master key using the transmission key plaintext, and returns same to the POS terminal; and S4. after decrypting same, the POS terminal encapsulates the master key in the machine, and notifies the platform of key encapsulation success. By means of the method for remotely issuing a POS key disclosed by the present invention, key encapsulation can be performed on each POS machine through a mechanism requested by a customer without performing key encapsulation on each POS machine by the manufacturer before it leaves the factory or by the merchant before delivery, thereby greatly saving time costs of key encapsulation.

Description

technical field [0001] The invention relates to the field of network payment security, in particular to a method for remotely issuing POS keys. Background technique [0002] In the prior art, a key is a parameter that is input in an algorithm that converts plaintext into ciphertext or converts ciphertext into plaintext. Keys are divided into symmetric keys and asymmetric keys. [0003] According to whether the encryption key and the decryption key used in the cryptographic algorithm are the same, and whether the decryption process can be deduced from the encryption process (or the encryption process can be deduced from the decryption process), the cryptosystem can be divided into symmetric cryptosystems (also called single Key cryptosystem, secret key cryptosystem, symmetric key cryptosystem) and asymmetric key cryptosystem (also called double key cryptosystem, public key cryptosystem, asymmetric key cryptosystem). [0004] Symmetric key encryption, also known as private k...

AI Technical Summary

Problems solved by technology

[0011] In the traditional POS filling key is manually operated by the manufacturer through special software before the POS machine leaves the factory or before the merchant ships. high

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