Picture verification code generation method, picture verification code and verification method and device

Abstract

Embodiments of the invention disclose a picture verification code generation method, a picture verification code and a verification method and device. The picture verification code generation method comprises the following steps of: creating a background picture of a picture verification code; randomly selecting a word from a pre-established lexicon, disorganizing the sequence of the selected word, writing an obtained character into the background picture, and storing a coordinate of the character under the normal sequence of the selected word into a cache, wherein the lexicon comprises propernouns and / or idioms; adding interference factor in the background picture in which the character is written; and adding a border for the character in the background picture to which the interferencefactor is added. According to the picture verification code generation method, sequence clicking type picture verification codes can be generated, and picture verification code cracking difficulty canbe greatly increased when verification is subsequently carried out by utilizing the picture verification codes, so that the network safety is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of Internet security, and in particular to a method for generating a picture verification code, a picture verification code, a verification method and a device. Background technique [0002] With the rapid development of the mobile Internet, smart phones have been rapidly popularized. At the same time, some people will use robots or scripts to automatically batch register certain applications, or use brute force to continuously log in or flood registered users. At this time, there must be a way to prevent this malicious attack in time. The function of adding verification codes is to prevent these malicious programs from continuously registering, logging in, and reading and writing databases on the website. The existing types of verification codes include the recognition of letters or numbers, the addition and subtraction of numbers, and the manual dragging verification codes that h...

AI Technical Summary

Problems solved by technology

First of all, the final result of the content of the verification code is a simple letter or number, then the program can perform exhaustive verification, that is to say, if you are not afraid of being banned, you can successfully verify it by means of brute force cracking; in addition, if the server itself receives When a large number of verification requests are made, a large amount of system resources of the server will be consumed, which will reduce the performance of the website and even cause the website to crash

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