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
4  2992 
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. js*******@attglobal.net
==================
On Apr 16, 3:49 pm, "Steph" <mcv...@hotmail.comwrote:
>
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.
You are going about it in a wrong way. Instead of encrypting PDF, you
should produce an e-book. Although e-books are not exactly hacker-
proof, either...
Cheers,
NC
"NC" <nc@iname.coma écrit dans le message de news: 11**********************@p77g2000hsh.googlegroups. com...
On Apr 16, 3:49 pm, "Steph" <mcv...@hotmail.comwrote:
>>
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.
You are going about it in a wrong way. Instead of encrypting PDF, you
should produce an e-book. Although e-books are not exactly hacker-
proof, either...
Cheers,
NC
Do you have a recommandation about what e-book to use ?
I'm not very familiar about it
"Jerry Stuckle" <js*******@attglobal.neta écrit dans le message de news: Zp******************************@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.
js*******@attglobal.net
==================
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