RE: encrypting a pdf
RE: encrypting a pdf
- Subject: RE: encrypting a pdf
- From: "Jordan Evans" <email@hidden>
- Date: Fri, 20 Oct 2006 11:21:39 -0700
If you don't mind developing it, it isn't that hard. I did it, but I
haven't created an interface for it.
Encrypt:
1. Copy your first PDF into an NSMutableData object.
2. Encrypt it.
3. Write it out to the single file that will be a combination of all PDF's.
4. Write location and size of PDF, as well as encryption info to file.
5. Repeat for all PDF's.
Decrypt:
1. Using your key, find the location, size and encryption info.
2. Decrypt.
3. Repeat for each PDF file.
As long as you have your encryption thought through, developing this
really doesn't take long to do.
I wouldn't rely on others encryption. If you can't understand it, how
do you know for sure it really is doing what it's saying? That's why
I created my own.
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