In reading the license I believe it refers to the gnupg itself, not
the application it may be embedded in. You are completely free to use
gnupg as you choose including modifying it to meet your needs.
Bastien
Sent from my iPod
On Dec 30, 2008, at 10:50 PM, Edward Diener <eldml@xxxxxxxxxxxxxx>
wrote:
My client application needs to send data to a PHP page in encrypted
form
and have the PHP code able to decrypt it. Likewise the PHP code
needs to
return data to my application encrypted and my client application
needs
to be able to decrypt it.
My application is written in C++ and naturally the PHP page is written
in PHP.
I do understand that public key-private key cryptography is the way to
go. So far my Internet search has turrned up GnuPG as a means of doing
public key-private key cryptography for PHP with libraries for C++
also.
However the client application is a commercial application and
unless I
misunderstand the GNU General Public License the software of the
application which uses GnuPG must allow its source to be freely
available in order to use the library. This is of course something
which
I am completely unwilling to do for the commercial application.
Is there any other public key-private key cryptography solution on the
PHP side which also has a C++ library which I can use for the client
application, which does not adhere to the GNU General Public License ?
This does not have to be a free product.
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