CONVERTING TEXT INTO IMAGES CAPTCHA

Rama, Dewa Mahkota (2013) CONVERTING TEXT INTO IMAGES CAPTCHA. Other thesis, Unika Soegijapranata Semarang.

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Abstract

CAPTCHA is used to prevent applications from using different types of bots computing services or collect certain types of sensitive information. Include preventing bots sign up for a free email account which can then be used to send spam and collect email addresses. CAPTCHA to prevent spam bots generated by requiring that the sender does not pass the CAPTCHA test before the email message is sent. The writer would like to create a simple CAPTCHA but the results are more complicated to read by bots. CAPTCHA was created using PHP and Ajax by utilizing GO Library for PHP. The writer makes a keyword will be randomly assigned each letter itself, a word which appears to consist of 4 to 7 letters. Then the results of random words will be converted to image utilizing GO Library CAPTCHA. The shape of each word will be different font for each word appears and the color of each letter will also be different. The background color will change and be added to the line so that the lines make the CAPTCHA image more interesting. The result is an image CAPTCHA text containing a random number of letters between 4 to 7 and will be different colors. With the establishment of random per letter aims to make it difficult for a bot to solve the CAPTCHA code. So that spam will not be able to get into a web page.

Item Type:	Thesis (Other)
Subjects:	000 Computer Science, Information and General Works > 005 Computer programming, programs & data
Divisions:	Faculty of Computer Science
Depositing User:	Mrs Christiana Sundari
Date Deposited:	23 Oct 2018 07:17
Last Modified:	23 Oct 2018 07:17
URI:	http://repository.unika.ac.id/id/eprint/17107

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