On Mar 28, 4:21 am,
scriptg...@gmail.com wrote:
But is it possible that I've found
wrong passwords which produces right CRC after decompression?
No. Especially since you have two instances.
Not only would the CRC have to match, so would the decryption check
that occurs before decompression even starts, and furthermore the
random data that would result from a faux password would have to both
have no deflate format errors (which is quite unlikely if the files
are longer than a few hundred bytes), and the self-terminating deflate
format would have to accidentally terminate at exactly the right
compressed byte and in order to produce no errors within the zip
format, would need to accidentally generate exactly the right number
of decompressed bytes.
I haven't calculated the probability of all of those accidents
occurring, but I'd guess somewhere around 10^-50 (+/- 20 in the
exponent). Since you had it happen twice, around 10^-100.
So, no. You have produced exactly the files that were originally
compressed. Now you have to figure out what they are.
Mark
