The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2025
Filed:
Oct. 13, 2021
Shenzhen Pax Smart New Technology Co., Ltd., Guangdong, CN;
SHENZHEN PAX SMART NEW TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
An encryption method and a decryption method for a payment key are provided. The encryption method includes: generating an AES file key and an AES key through a key store management system; generating, by the back-end system, a SM4 white box secret key, a SM2 public key and a SM2 private key and saving the SM2 private key; receiving the SM4 white box secret key and the SM2 public key sent by the back-end system; encrypting, by using the AES file key, the SM4 white box secret key and the SM2 public key to generate and save a ciphertext of the SM4 white box secret key and the SM2 public key; encrypting, using the SM4 white box secret key, the AES key and the SM2 public key, a plaintext of the payment key issued by an electronic payment system to generate and save a ciphertext of the payment key.