On Tue, May 15, 2007, [EMAIL PROTECTED] wrote:

> 
> Thank you for your response.
> Actually I use the default verify_callback function (NULL)
>    "SSL_CTX_set_verify(ctx,SSL_VERIFY_PEER,NULL);"
> By default it does not take into account possible errors coming from client
> certificate?
> Does it mean it is compulsary to call a verify_call_back function ?
> 

No, quite the opposite. For many purposes you don't need a custom callback.

Unfortunately some "guides" insist a callback is necessary some even
supply a debugging callback which ignores all errors and results in zero
security.

Steve.
--
Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage
OpenSSL project core developer and freelance consultant.
Funding needed! Details on homepage.
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