Captcha in Liferay

Set the maximum number of captcha checks per portlet session. Set this value to 0 to always check. Set this value to a number less than 0 to never check. Unauthenticated users will always be checked on every request if captcha checks is enabled.

captcha.max.challenges=1

Set whether or not to use captcha checks for the following actions.

captcha.check.portal.create_account=true

captcha.check.portal.send_password=true

captcha.check.portlet.message_boards.edit_category=false

captcha.check.portlet.message_boards.edit_message=false

Set the engine used to generate captchas. reCAPTCHA uses an external service that must be configured independently but provides an audible alternative which makes the captcha accessible to the visually impaired.

Examples:

captcha.engine.impl=com.liferay.portal.captcha.recaptcha.ReCaptchaImpl

captcha.engine.impl=com.liferay.portal.captcha.simplecaptcha.SimpleCaptchaImpl

reCAPTCHA

captcha.engine.recaptcha.key.private=

captcha.engine.recaptcha.key.public=

captcha.engine.recaptcha.url.script=http://api.recaptcha.net/challenge?k=

captcha.engine.recaptcha.url.noscript=http://api.recaptcha.net/noscript?k=

captcha.engine.recaptcha.url.verify=http://api-verify.recaptcha.net/verify

SimpleCaptcha

Set the height and width for captcha images generated by SimpleCaptcha.

captcha.engine.simplecaptcha.height=50

captcha.engine.simplecaptcha.width=150

Input a list of comma delimited class names that implement nl.captcha.backgrounds.BackgroundProducer. These classes will be randomly used by SimpleCaptcha to generate a background for a captcha image.

captcha.engine.simplecaptcha.background.producers=nl.captcha.backgrounds.FlatColorBackgroundProducer,nl.captcha.backgrounds.GradiatedBackgroundProducer,nl.captcha.backgrounds.SquigglesBackgroundProducer,nl.captcha.backgrounds.TransparentBackgroundProducer

Input a list of comma delimited class names that implement nl.captcha.gimpy.GimpyRenderer. These classes will be randomly used by SimpleCaptcha to gimp a captcha image.

Examples:

captcha.engine.simplecaptcha.gimpy.renderers=nl.captcha.gimpy.RippleGimpyRenderer

captcha.engine.simplecaptcha.gimpy.renderers=nl.captcha.gimpy.BlockGimpyRenderer,nl.captcha.gimpy.DropShadowGimpyRenderer,nl.captcha.gimpy.FishEyeGimpyRenderer,nl.captcha.gimpy.RippleGimpyRenderer,nl.captcha.gimpy.ShearGimpyRenderer

Input a list of comma delimited class names that implement nl.captcha.noise.NoiseProducer. These classes will be randomly used by SimpleCaptcha to add noise to a captcha image.

Examples:

captcha.engine.simplecaptcha.noise.producers=nl.captcha.noise.CurvedLineNoiseProducer captcha.engine.simplecaptcha.noise.producers=nl.captcha.noise.CurvedLineNoiseProducer,nl.captcha.noise.StraightLineNoiseProducer

Input a list of comma delimited class names that implement nl.captcha.text.producer.TextProducer. These classes will be randomly used by SimpleCaptcha to generate text for a captcha image.

Examples:

captcha.engine.simplecaptcha.text.producers=com.liferay.portal.captcha.simplecaptcha.PinNumberTextProducer

captcha.engine.simplecaptcha.text.producers=com.liferay.portal.captcha.simplecaptcha.DictionaryWordTextProducer,com.liferay.portal.captcha.simplecaptcha.PinNumberTextProducer,nl.captcha.text.producer.DefaultTextProducer,nl.captcha.text.producer.FiveLetterFirstNameTextProducer

Input a list of comma delimited class names that implement nl.captcha.text.renderer.WordRenderer. These classes will be randomly used by SimpleCaptcha to render text for a captcha image.

Examples:

captcha.engine.simplecaptcha.word.renderers=nl.captcha.text.renderer.DefaultWordRenderer

captcha.engine.simplecaptcha.word.renderers=nl.captcha.text.renderer.ColoredEdgesWordRenderer,nl.captcha.text.renderer.DefaultWordRenderer