Creating a Secure token with PHP for the Recaptcha V2

[Ithica]

Hi all,

has anyone managed to create  a secure token for the new V2 recaptcha ?

In the developper's guide, it says :

1 - Prepare a token in json format

    {"session_id": e6e9c56e-a7da-43b8-89fa-8e668cc0b86f,"ts_ms":1421774317718}

Ok, fine ...

2 - Encrypt it with your site secret, after encryption it looks like this:

    "Fg2rtWDZ6kf_Cc1fZs5xKJWnkkVvZgNCF-5fVhPS5_r1fB2NRXPg3WobIUUsyOvfN-ElyBz3zz29lK5v9NE0ByWrGzicUWecnoV8hwSb6W4"

Right .... the problem is, how do you encrypt your token with your private key ?
Google's guide only provides examples in Java on Github... and i've been searching on the web for a simple and neat explanation without success ...
Does anyone knows a tutorial or guide for PHP users ?

Mr Larry Page, if you ever read my request ( :-) ), could one of your top developper could add more information in the secure token section, that would be greatly appreciated ;-)

For now, i'm keeping an eye on this post on Stackoverflow, hoping for a solution :
http://stackoverflow.com/questions/31478724/how-to-generate-a-google-recaptcha-v2-secure-token-with-php

[Dayjo]

Hi Ithica,

Try this; https://github.com/slushie/recaptcha-secure-token this is working for me

[dr.ji...@gmail.com]

Hi Dayjo,
I also followed exactly the solution of slushie and have the captcha displayed sucessfully on localhost environment. However when I start testing on the server, I got the error: invalid stoken.

Do you have some ideas of that? Or did you make some special changes regarding to the code base of slushie?

Thanks