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Posted by Steph on 04/17/07 19:36
"Jerry Stuckle" <jstucklex@attglobal.net> a ιcrit dans le message de news:
ZpydndHdq9ZNhbnbnZ2dnUVZ_oHinZ2d@comcast.com...
> Steph wrote:
>> Hi Everybody,
>>
>> Does anybody know whether it is possible to encrypt AUTOMATICALLY in PHP
>> (at the server side) an Adobe PDF document (also stored at the server
>> side) by using a public key coming from a certificat of the client that
>> want to retreive, decrypt (with his private key) and read the PDF
>> document ?
>>
>> I would like to distribute PDF document to certified clients for which
>> they could only read the document on their PC that owns the certificat
>> (public/private keys) that has been used to encrypt the document at the
>> server side and allow to decrypt it at the client side.
>>
>> Many thanks in advance for you help
>>
>> Steph
>
> Forget it. Most clients don't have certificates, and even if they did,
> they could copy the certificate to another machine.
>
> If it were that easy we wouldn't have the problem with piracy (both
> software and entertainment) that exists in the world today.
>
> The fact is - once I download your PDF, I can pretty much do as I please
> with it. If you don't want others to have it, don't distribute it.
>
> --
> ==================
> Remove the "x" from my email address
> Jerry Stuckle
> JDS Computer Training Corp.
> jstucklex@attglobal.net
> ==================
Thanks for your advice !
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