Base64captch support digits, numbers,alphabet, arithmetic, audio and digit-alphabet captcha.

Download and Install

go get -u github.com/mojocn/base64Captcha

Create Captcha Code

import "github.com/mojocn/base64Captcha"
func demoCodeCaptchaCreate() {
    //config struct for digits
    //数字验证码配置
    var configD = base64Captcha.ConfigDigit{
        Height:     80,
        Width:      240,
        MaxSkew:    0.7,
        DotCount:   80,
        CaptchaLen: 5,
    }
    //config struct for audio
    //声音验证码配置
    var configA = base64Captcha.ConfigAudio{
        CaptchaLen: 6,
        Language:   "zh",
    }
    //config struct for Character
    //字符,公式,验证码配置
    var configC = base64Captcha.ConfigCharacter{
        Height:             60,
        Width:              240,
        //const CaptchaModeNumber:数字,CaptchaModeAlphabet:字母,CaptchaModeArithmetic:算术,CaptchaModeNumberAlphabet:数字字母混合.
        Mode:               base64Captcha.CaptchaModeNumber,
        ComplexOfNoiseText: base64Captcha.CaptchaComplexLower,
        ComplexOfNoiseDot:  base64Captcha.CaptchaComplexLower,
        IsShowHollowLine:   false,
        IsShowNoiseDot:     false,
        IsShowNoiseText:    false,
        IsShowSlimeLine:    false,
        IsShowSineLine:     false,
        CaptchaLen:         6,
    }
    //create a audio captcha.
    idKeyA, capA := base64Captcha.GenerateCaptcha("", configA)
    //write to base64 string.
    base64stringA := base64Captcha.CaptchaWriteToBase64Encoding(capA)
    //create a characters captcha.
    idKeyC, capC := base64Captcha.GenerateCaptcha("", configC)
    //write to base64 string.
    base64stringC := base64Captcha.CaptchaWriteToBase64Encoding(capC)
    //create a digits captcha.
    idKeyD, capD := base64Captcha.GenerateCaptcha("", configD)
    //write to base64 string.
    base64stringD := base64Captcha.CaptchaWriteToBase64Encoding(capD)

    fmt.Println(idKeyA, base64stringA, "\n")
    fmt.Println(idKeyC, base64stringC, "\n")
    fmt.Println(idKeyD, base64stringD, "\n")
}

Verify Captcha Code

import "github.com/mojocn/base64Captcha" func verfiyCaptcha(idkey,verifyValue string){ verifyResult := base64Captcha.VerifyCaptcha(idkey, verifyValue) if verifyResult { //success } else { //fail } }