If you want to backup your crypto containers, you have mainly two choices:
1.) Open the container on your machine and one on the backup server and than you can start with an incremental backup.
2.) You always transfer the whole crypto container.
From a security point of view it’s not acceptable to open a container on a [...]

Long time ago, I posted a guide on how to make John the Ripper able to crack MD5 hashes (http://www.disenchant.ch/blog/teaching-john-the-ripper-how-to-crack-md5-hashes/106). In that posting where some errors and also it’s not up to date so I made a small shell script which downloads, patches and compile JtR 1.7.3.4 for you automatically
wget http://www.openwall.com/john/g/john-1.7.3.4.tar.gz
tar xvf john-1.7.3.4.tar.gz
wget http://www.openwall.com/john/contrib/john-1.7.3.4-jumbo-1.diff.gz
gunzip john-1.7.3.4-jumbo-1.diff.gz
cp [...]

Quiet a lot of people asked me to write again blog postings and even if I failed already a few times because of the time it takes to write these postings, I’ll try it once more and hope to provide all my readers again with valuable information on the topic of security.