Le 23 janv. 09 à 16:10, fc...@dialup4less.com a écrit :
I would like to:
1) Encrypt/Encode a SQLite DB file from the command line (or via an
application) and
2) De-Encrypt/Decode the same SQLite DB from within Cocoa/iPhone via
a key of some sort.
Scenario:
I'm developing a game using data values stored within a SQLite DB
file. I don't want hackers
to pry into the DB file and cheat the game; yet I need to
occasionally update the SQLite DB file via
importing MS Excel data.
I'm thinking of encypting the DB file that is stored with the
Application Bundle, then programmatically
de-code it within a working directory to glean the contents; then
remove the de-coded SQLite DB file.
So the game data is stored as an encrypted SQLite DB file within
the bundle, to be de-encrypted upon
game startup to load the environment variables.
If this is an iPhone app, it should be signed, and AFAK, the iPhone is
far more strict than Mac OS with tempered applications.
And so, you don't need to do something special to prevent resources
modifications.
That said, the simplest way to crypt data on OS X is to use the
CommonCrypto API. (see /usr/include/CommonCrypto/CommonCryptor.h)
And it look like this API is also available on iPhone (see the
CryptoExercise sample code).
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