Verification interactive method and related device and communication system

• Main Authors: TANG YANPING, FU XIAOQIANG, CHEN YUANBIN, ZHANG DONGRUI, SONG LIANGSHAN
• Format: Patent
• Language: English
• Published: 03.02.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The embodiment of the invention discloses a verification interactive method and related device and communication system. The verification interactive method comprises the following steps of receiving a verification request message from a client; transmitting a first verification interactive message containing N1 sub-pictures, wherein the N1 sub-pictures are obtained through cutting a verification picture, the N1 sub-pictures include a base picture and N1-1 option pictures, shape of N2 option pictures of the N1-1 option pictures has at least m axes of symmetry, N1 and N2 both are positive integers and N1 is greater than 1, and m is an integer greater than 4; if a second verification interactive message containing a spliced picture formed by splicing N1 sub-pictures is received from the client, comparing the spliced picture with the verification picture to determine a verification result. The embodiment scheme of the invention is beneficial to improvement of capability in the aspect of preventing brute force attacks of malicious clients during the verification process.