6 messages in com.googlegroups.google-picasa-data-apiRe: How to deliberately cause a captc...| From | Sent On | Attachments |
|---|---|---|
| Henrik | 28 Feb 2008 12:00 | |
| Cameron Hinkle | 28 Feb 2008 12:06 | |
| Ryan Boyd (Google) | 28 Feb 2008 12:09 | |
| Cameron Hinkle | 28 Feb 2008 12:11 | |
| Ryan Boyd (Google) | 28 Feb 2008 12:53 | |
| Henrik | 29 Feb 2008 03:50 |
| Subject: | Re: How to deliberately cause a captcha challenge? |
|---|---|
| From: | Ryan Boyd (Google) (api....@google.com) |
| Date: | 02/28/2008 12:53:50 PM |
| List: | com.googlegroups.google-picasa-data-api |
On Thu, Feb 28, 2008 at 12:11 PM, Cameron Hinkle < gold...@gmail.com> wrote:
A CAPTCHA challenge can also be issued after a valid password, right?
If you've already had a CAPTCHA challenge issued, then new requests (even with valid passwords), will cause the CAPTCHA to be re-issued.
While it's technically possible to have a CAPTCHA request issued on your first auth request with a valid password, it's not as likely.
Cheers, -Ryan
On Thu, Feb 28, 2008 at 12:09 PM, Ryan Boyd (Google) <api....@google.com> wrote:
Hi, There is an algorithm used to determine whether CAPTCHAs should be sent-- this algorithm is not public, as CAPTCHAs are intended to prevent abuse.
However, I've had success doing 30-50 bad passwords in a row generating CAPTCHAs. Note that the passwords you try each time should be different, so it looks like you're trying to attack an account.
Does this work for you?
Cheers, -Ryan
On Thu, Feb 28, 2008 at 12:00 PM, Henrik <henr...@gmail.com> wrote:
Hi,
I'm trying to validate that my client's handling of a captcha challenge from the authentication API is correct, however I am failing to produce a captcha situation, thus failing to test the code to handle it! So, my question is: When is a captcha challenge actually issued? I've tried logging in with an incorrect password up to 20 times in quick succession, but still I only get the normal "BadAuthentication" error, and an attempt to login with the correct password following this will always succeed without any challenge.
Any tips? BR /Henrik
-- http://www.cameronhinkle.com/
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