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:
Jan. 07, 2025
Filed:
Dec. 09, 2021
Feitian Technologies Co., Ltd., Beijing, CN;
Zhou Lu, Beijing, CN;
Huazhang Yu, Beijing, CN;
Feitian Technologies Co., Ltd., Beijing, CN;
Abstract
A method and apparatus for realizing secure signature, the method includes: when a PIN verification instruction is received, verifying a first calculation result in the instruction by using a second shared key generated according to a terminal public key and a signature module private key, if the verifying is failed, replacing a stored signature module key pair with a regenerated signature module key pair; otherwise, generating PIN verification signature data and storing the PIN verification signature data, generating a second calculation result according to a second shared key and the PIN verification signature data and sending the second calculation result to the terminal; when a signature operation instruction is received, determining whether the PIN verification signature data in the instruction is consistent with the stored PIN verification signature data, if yes, signing an intermediate data to be signed by using a signature private key.