Method and device for implementation of picture verification code

Abstract

The invention discloses a method for implementation of a picture verification code. The method includes: acquiring current verification code parameters including user setup parameters and random parameters; determining the length and content of a character string of the verification code according to the random parameters, and acquiring a corresponding shape numerical matrix of each character in the character string of the verification code from a designated font object library according to font object library route parameters in the user setup parameters; converting each shape numerical matrix into a character picture of a corresponding character shape, and subjecting all character pictures to character special effect processing according to part of the verification code parameters to generate an initial verification code picture; filling the background of the initial verification code picture with a randomly selected background color; and subjecting the initial verification code picture with the background filled to anti-decoding processing according to difficulty parameters in the user setup parameters and picture special effect processing parameters in the random parameters, and then performing color change processing to generate a final verification code picture. The invention further discloses a device for implementation of the picture verification code.

Description

technical field [0001] The invention relates to the technical field of Internet security, in particular to a method and device for realizing a picture verification code. Background technique [0002] With the increasing popularity of Internet applications, its market position is becoming more and more important. Some people try to make or use "keyboard" software on the open platform of Internet services to automatically fill in various login forms on the Internet, so as to achieve The purpose of sending a large amount of spam. In the field of Internet technology, a public fully automatic program that can distinguish whether the user behind a certain request is a computer or a human is usually used to avoid the security risks caused by the "registration machine". form. [0003] At present, the application of verification code pictures is relatively common. For a generated verification code picture, the user in front of the computer can easily get the answer that needs to be...

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Problems solved by technology

[0004] However, in the prior art, generally only verification codes of the same style or even the same font can be generated on different pages of the same website. However, different webpages have different requirements for the difficulty of verification codes. The prior art does not target different websites. Provide a set of general methods for generating verification code pictures, which are used to generate verification code pictures including verification codes of different degrees of difficulty for different web pages of different websites, so it is not suitable for the current development needs of the Internet

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