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Captcha widget for Plone.

Project description


plone.formwidget.captcha is a z3c.form captcha widget for use with Plone. It is a z3c.form re-implementation of the collective.captcha package written by Martijn Pieters.

Buildout Installation

Add the following code to your buildout.cfg to install plone.formwidget.captcha:

eggs =

zcml =

Captchas without server state

(From collective.captcha)

A view to generate a captcha image and/or wav file, and to verify user input against it.

A cookie is used to transfer state from one request to the next. The state is used, together with a server-side secret, to create a random string of characters, which in turn is displayed as a captcha image, or transformed to an audio file. Verification happens case-insensitively.

Note that the captcha ‘word’ is only usable for 5-10 minutes, after which the view will not accept it any more. Moreover, a different word will be generated for a given session key every 5 minutes.

This makes these captchas replayable for up to 10 minutes if a determined user keeps sending the same session id. Because of the server-secret though, captchas are not transferrable between sites.


1.0.3 (2016-03-04)

  • Add empty plone.pot file for script to work. [davidjb]

  • Add Czech translation [naro]

  • Add French translation [cedricmessiant]

1.0.2 (2013-10-31)

  • Add Brazilian Portuguese and Spanish translations. [hvelarde]

1.0.1 (2012-01-26)

  • Add i18n option and translate to dutch [maartenkling]

  • Use widgets view class attributes in the template. [romanofski]

1.0 (2011-06-29)

  • Use hashlib module by default. [thomasdesvenain]

  • Zope 2.13 imports (removes warnings under Plone 4.1) [thomasdesvenain]

1.0b2 - 2010-09-02

  • Specify allowed_attributes for the captcha view, so the image/audio pages are accessible in Zope 2.12.9+. [hannosch]

  • Move to feature declaration to meta.zcml. [timo]

  • Fix verify method for empty string input values. This is necessary for 1.0b5 compatibility. [timo]

1.0b1 - 2010-06-02

  • Fix _generate_words method. The “nowish” variable tells us in which 5 minutes slot we are in. Therefore we increment the time slot by 1, not by 5 (minutes). [tbesluau]

  • Declare that plone.formwidget.captcha provides a Captcha field that can be used by to add a Captcha field to comment forms. [timo]

1.0a2 - 2010-01-28

  • Updated package metadata and marked this as a Plone add-on. [hannosch]

1.0a1 - 2009-08-28

  • Initial release [timo]

Project details

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plone.formwidget.captcha-1.0.3.tar.gz (590.0 kB view hashes)

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