Re: Text file encryption
Re: Text file encryption
- Subject: Re: Text file encryption
- From: Jeremy Dronfield <email@hidden>
- Date: Sun, 15 Sep 2002 11:43:36 +0100
Thanks. I downloaded the OpenSSL material, but there seems to be a vast
quantity of it, and virtually no clue anywhere on which bits of it would
be useful to me, and little documentation on how to use any of it. I
have a feeling my requirements are slightly unusual, in that I'm not
planning to use encryption in network communications. Could you suggest
how SSL might be used to encrypt a string (with style attributes) and
save it to disk?
On Saturday, September 14, 2002, at 06:07 pm, David Remahl wrote:
Does anyone know of a good secure Cocoa method of encrypting text
files?
I'd like my app to be able to encrypt/decrypt collections of rtf files.
At the moment I'm using a pretty rudimentary approach (which isn't
encryption at all really), in which I take my collections of attributed
strings and archive them as data objects. These are then put in a
dictionary which is saved into a plist file. Good enough to thwart your
average Joe User, but wouldn't fool anyone with any serious technical
know-how longer than about ten seconds.
I'd like a *proper* encryption method which would bar any attempt
(short
of cracking the reader app) to copy encrypted resource files out of the
app bundle and read them. What I'm after, ideally, is a roll-my-ownable
C or obj-C technique which I can write into my application rather
than a
piece of proprietary encryption software. Any advice?
The services of OpenSSL <http://www.openssl.org/> are available to you.
/ Regards, David Remahl
-Jeremy
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