Correct password verification for revision 3 or greater

Open kushal-kumaran opened this issue 15 years ago • 1 comments

According to spec, only the first 16 bytes must be compared when verifying password with Algorithm 3.5 revision 3 or greater.

Dec 27 '10 10:12 kushal-kumaran

To add some context, I ran into some pdf files generated by "[ClibPDF Library 2.02-r1-2] Windows 9x/NT" which did not use 0 as the arbitrary padding bytes. That's when I looked at the spec and figured out we're only supposed to compare the first 16 bytes of the U entry.

Jan 08 '11 14:01 kushal-kumaran