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CS122B: Projects in Databases and Web Applications Spring 2018

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Presentation on theme: "CS122B: Projects in Databases and Web Applications Spring 2018"— Presentation transcript:

1 CS122B: Projects in Databases and Web Applications Spring 2018
Notes 09: reCaptcha Professor Chen Li Department of Computer Science CS122B

2 reCaptcha: preventing internet bots
Web sites have valuable information Example: ticketmaster.com “Bad people” write programs/bots to send bad requests (e.g., registration, buying tickets) CS122B

3 First version: captcha
Use Captcha to correct OCR errors CS122B

4 2nd version: recaptcha CS122B

5 reCaptcha example: TomcatFormReCaptcha.war
index.html 3. g-recaptcha-response Client Browser Tomcat Server 2. g-recaptcha-response 4. g-recaptcha-response Secret Key 1. Site Key Google reCaptcha Server CS122B

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