ivecwuncirpipteit
New Member
I have created a captcha image making program with PHP\[code\]<?phpfunction word($n) { $consonants = "bcdfghjklmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ"; $vowels = "aeiou"; $word[1] = $consonants[rand(0, 41)]; $word[2] .= $vowels[rand(0, 4)]; $word[3] .= $consonants[rand(0, 41)]; $word[4] .= $consonants[rand(0, 41)]; return $word[$n];} $xs = 550; $ys = 300; $im = imagecreatetruecolor($xs, $ys); $newim = imagecreatetruecolor($xs, $ys); imagettftext($im, $ys/5, rand(-10, 10), rand(0, 10), $ys/2, 0xFFFFFF, "geosans.ttf", word(1)); imagettftext($im, $ys/4.5, rand(-10, 10), rand(50, 70), $ys/2, 0xFFFFFF, "geosans.ttf", word(2)); imagettftext($im, $ys/4, rand(-10, 10), rand(100, 150), $ys/2, 0xFFFFFF, "geosans.ttf", word(3)); imagettftext($im, $ys/3.5, rand(-10, 10), rand(185, 210), $ys/2, 0xFFFFFF, "geosans.ttf", word(4)); for ($x=0; $x<=$xs;$x++){ for ($y=0; $y<=$ys;$y++){ $rgba = imagecolorsforindex($im, imagecolorat($im, $x, $y)); $col = imagecolorallocate($newim, $rgba["red"], $rgba["green"], $rgba["blue"]); $distorted_y = ($y + round(45*sin($x/50)) + imagesy($im)) % imagesy($im); imagesetpixel($newim, $x, $distorted_y, $col); } } imagefilter($newim, IMG_FILTER_NEGATE); header("Content-type: image/png"); imagepng($newim);?>\[/code\]But how can I apply it?How does the official captcha website encrypt their'sThis is an examplehttp://www.google.com/recaptcha/api...iSfn-uKDExfVCo2PGrTao2wWpBLultbUEsctlJ97JXKCQOverall, I'm asking how can I safely encrypt my data?