[Pkg-openssl-devel] Bug#659251: openssl: enc: Bad compression ration with -z (zlib compression)

Sebastian Andrzej Siewior sebastian at breakpoint.cc
Sat Apr 7 11:52:29 UTC 2012


tags 659251 + patch
thanks

* Roland Stigge | 2012-02-09 15:52:21 [+0100]:

>$ openssl enc -bf -in /usr/share/common-licenses/GPL-3 -out GPL-3.enc
>enter bf-cbc encryption password:
>Verifying - enter bf-cbc encryption password:
>$ openssl enc -bf -in /usr/share/common-licenses/GPL-3 -out GPL-3.enc-z -z
>enter bf-cbc encryption password:
>Verifying - enter bf-cbc encryption password:
>$ gzip -c /usr/share/common-licenses/GPL-3 > GPL-3.gz
>$ ls -l GPL-3* /usr/share/common-licenses/GPL-3
>-rw-r--r-- 1 rst  rst  35168 Feb  9 15:39 GPL-3.enc
>-rw-r--r-- 1 rst  rst  35189 Feb  9 15:39 GPL-3.enc-z
>-rw-r--r-- 1 rst  rst  12143 Feb  9 15:40 GPL-3.gz
>-rw-r--r-- 1 root root 35147 Jul  2  2007 /usr/share/common-licenses/GPL-3
>$

The problem is that openssl tries to compress encrypted content which
seems not to work. The patch attached changes the order to first
compress and then encrypt.

Sebastian
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