17 Dec
2003
17 Dec
'03
11:17 p.m.
Hi all, I was hoping someone might be able to point me to details on .PDF file encryption. I'm specifically interested in key-generation (which hash is used?) and if there is consistant known-plaintext in .PDF file headers. I've searched around, and all I can find is that Acrobat uses rc4, which isn't very helpful... Thanks! -=fade=-