Hi

I'm not really looking for the code for this, unless it's short. I'm Looking more for a starting point... Is it possible to write and read from a client side file in any web language, preferably php? If so what can I look for when searching for articles / notes please?

I'm working on an encryption project and one of the ways I'm thinking of storing the long keys used to encrypt and decrypt is to save the key in a file on their computer somewhere (with their permission) where it can be read and written to when needed.

I can store the key in a database under the users details, and that would still be quite secure, but would like to see if I can make it a bit more securer by saving locally so that only they would have access to it.

I'm using the key, username and password to encrypt personal details in the database, like names, addresses, and contact details. Just to slow down anyone that happened to get access to my databases as all they'll see is something similar to this:

137|115|100|127|128|118|188|157|121|118|113|094|13 1|101|149|135|

Thanks

Kevin

Nope, Server side code cannot read anything on the client other than cookies.
Saving things like this client side is often a problem,

What if they;
login from another machine.
get another machine / have a laptop
clear their cookies

etc etc

Personally I use several tables and store different bits of data in each table and DO NOT retrieve it with a single SQL statement for anything that needs to be fairly secure

OK thanks. I tend to store things in seperate databases myself. And can do the same for this, but was just seeing if there were other options as well.

yes, you can do this, but only if you also include a java application in the formatted html output to handle a connection to and from another php page that handles the data transfer.