Hi Ryan,

Thanks for your time and help. My server is synchronized with an NTP
server. Is there anything else that I can look for?

Cheers,
Abbas

On Mar 6, 11:08 am, "Ryan Boyd (Google)" <[EMAIL PROTECTED]> wrote:
> Hi Abbas,
>
> Your process looks good.  Can you please check the date/time setting on your
> server?  Is it synchronized to some good NTP servers?  If you are using the
> client library, this is probably the biggest problem that would not be
> code-dependent.  A timestamp is part of the signature and, if far off, you
> will get a 401.
>
> Cheers,
>
> -Ryan
>
> On 3/6/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
>
>
> > Hi All,
>
> > I am trying to request a secure session token for the calender feed.
> > My request returns a 'Signature is invalid' exception. Here is what I
> > did.
>
> > 1. Registered my webapp online with a .pem certificate.
> > 2. User logged into my webapp and got redirected to authsub page.
> > 3. User grants access and my webapp gets a single use token.
> > 4. The webapp makes an api call through gdata java client library to
> > get the secure token: AuthSubUtil.exchangeForSessionToken(token,
> > privKey). The private key is passed to the gdata library for signing
> > the request. I checked the auth header to see if all the required data
> > is present and all seemed to be good.
> > 5. The service responds with the following exception.
> > com.google.gdata.util.AuthenticationException: 401: Signature is
> > invalid
> >         at
> > com.google.gdata.client.http.AuthSubUtil.exchangeForSessionToken(Unknown
> > Source)
> >         at
> > com.google.gdata.client.http.AuthSubUtil.exchangeForSessionToken(Unknown
> > Source)
>
> > Did anybody face such an issue? Appreciate any help.
>
> > Thanks,
> > Abbas


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