On 18/07/2012 17:25, Nellis, Kenneth wrote:
-----Original Message-----
From: Aaron Schneider
On 16/07/2012 22:16, Nellis, Kenneth wrote:
I am seeing an mcrypt problem with short plaintext strings.
I don't have a Linux box to compare results, so I don't
know if this is an upstream or a Cygwin issue.
$ mcrypt --version
Mcrypt v.2.6.8 (i686-pc-cygwin)
Linked against libmcrypt v.2.5.8
Copyright (C) 1998-2002 Nikos Mavroyanopoulos (n...@gnutls.org)
$
Longer strings seem to work:
$ echo abcdef | mcrypt -q -k xyz | mcrypt -dq -k xyz
abcdef
$
But shorter ones not so much:
$ echo abcde | mcrypt -q -k xyz | mcrypt -dq -k xyz
abâ–’$
--Ken Nellis
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The commands you show work correctly with older version of the software.
Specifically, I've tried this:
mcrypt-2.6.7-1.tar.bz2
libmcrypt4-2.5.8-1.tar.bz2
libmcrypt-2.5.8-1.tar.bz2
Although on Ubuntu 12.04 LTS latest versions of mcrypt and libmcrypts
work with these two commands.
-----END Original Message-----
It looks like this could be a Cygwin issue then.
As alternatives, it seems that ccrypt and openssl work just fine:
$ echo "abcde" | ccrypt -u -K xyz | ccrypt -d -u -K xyz
abcde
$ echo "abcde" | openssl des -k xyz | openssl des -d -k xyz
abcde
$
crypt, OTOH, seems also to be broken, if I'm using it correctly (no
man page or --help option):
$ echo "abcde" | crypt xyz | crypt xyz
abA7GTEBsFqY6
$
If these utilities are broken, maybe they should be fixed or
removed from the distribution.
--Ken Nellis
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I believe crypt and mcrypt are based on the same, for information given
by ubuntu:
--------
crypt -h
Unix crypt(1) emulation program using mcrypt(1).
Usage: crypt password <file_in >file_out
Usage: crypt <file_in >file_out
echo abcde | crypt xyz | crypt xyz
Unix crypt(1) emulation program using mcrypt(1).
Use crypt -h for more help.
Unix crypt(1) emulation program using mcrypt(1).
Use crypt -h for more help.
Warning: It is insecure to specify keywords in the command line
Warning: It is insecure to specify keywords in the command line
Stdin was encrypted.
abcde
Stdin was encrypted.
--------
Both commands
echo abcde | mcrypt -q -k xyz | mcrypt -dq -k xyz
echo abcde | crypt xyz | crypt xyz
- Work on FreeBSD 9.0 and Ubuntu 12.04
- Fail on Cygwin, gentoo and gentoo-based OS like funtoo and sabayon.
It's been reported to gentoo: https://bugs.gentoo.org/show_bug.cgi?id=426914
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