Verification code generation to improve recognition accuracy by a person and recognition difficulty by a computer program

US10671719B2 · kind B2 · utility

Assignee

• Alibaba Group Holding Limited · KY

Inventors

• Chao Xiu · Shanghai, CN
• Lei Wang · Hangzhou City, CN
• Xing CHEN · Chengdu, CN
• Chuanzhi Li · Hangzhou City, CN
• Yongzhi Zhang · Wayland, US

Key dates

• Filing date: Apr 24, 2019
• Grant date: Jun 2, 2020
• Expiry date: Apr 24, 2039

Classification

• Technology area (CPC —): General

Abstract

A verification request is received. In response to receiving the verification request, a first character string is obtained. The first character string comprises one or more variable characters. At least one of the one or more variable characters in the first character string is replaced with at least one backup character to generate a second character string based on multiple pre-established corresponding relationships. A verification code is generated based on the second character string. A user corresponding to the verification request is verified based on a user input corresponding to the verification code.