Zip And Jar

[freesoft_2000]

Hi everyone,

I have a small program in which i try to encrypt a zip or jar file but here is the thing in that eveything can be decrypted and encrypted without any problems but the archives(either a jar or zip file) after decryption later cannot be read. This does not happen for other type of files. I notice this only happens to archives.

Why is this so?

I hope someone can explain to me this in detail

Thank You

Yours Sincerely

Richard West

[JGRobinson]

Hi Richard,

I don't know if it is of any help, but I had a similar problem when I wrote
a small program to download PDF files from the internet.

Other files came down correctly, but it seemed that the PDF files were corrupt.

I found in my program that I was using InputStreamReader/BufferedStream reader which I suspect was doing some cr/lf conversions in the background.

All that I really know is that I fixed it by using a plain InputStream instead.

[nspils]

Richard:

Are you archiving after you encrypt, or do you archive and then encrypt? If the latter, then you are running into a problem with the interaction between encryption and the archiving format, which might include an encryption mechanism of its own ... Where have you searched for a solution to this? I would think that you are not the first to face this problem ...