Currently, the characters in the CAPTCHA image are all in the same font.

Adding the possibility to have the different characters in different fonts would raise the bar for automated attacks. For humans on the other hand, the difficulty would not increase that much, I think (this largely depends on the choice/mix of fonts of course).

CommentFileSizeAuthor
#3 imagecaptchafontselection.png103.02 KBsoxofaan
#2 571344_mix_multiple_fonts_2.patch26.35 KBsoxofaan
#1 571344_mix_multiple_fonts_1.patch11.38 KBsoxofaan
#1 Screenshot_multiplefonts.png44.43 KBsoxofaan

Comments

soxofaan’s picture

soxofaan commented
Status: Active » Needs work
StatusFileSize
new Screenshot_multiplefonts.png44.43 KB
new 571344_mix_multiple_fonts_1.patch11.38 KB

A first basic but functional implementation of this feature
remaining work is mainly error condition checking and recovering

soxofaan’s picture

soxofaan commented
Assigned: Unassigned » soxofaan
Status: Needs work » Needs review
StatusFileSize
new 571344_mix_multiple_fonts_2.patch26.35 KB

This one should contain all the required polish

full development history: http://github.com/soxofaan/drupal-captcha-dev/tree/571344_mix_multiple_f...

soxofaan’s picture

soxofaan commented
StatusFileSize
new imagecaptchafontselection.png103.02 KB

also note that the patch from #2 also adds some font previews to the mix, yay

soxofaan’s picture

soxofaan commented
Status: Needs review » Fixed

committed
http://drupal.org/cvs?commit=302556

Status: Fixed » Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.