If you need to run a bruteforce attack against some Java classes, you may use John the Ripper. Perhaps not the fastest variant but very easy to set up: john -incremental -stdout | java -cp some.jar:. Digest and Digest.java looks like this: [cc ...Read More

John the Ripper and Java

P-ppk-crack will try to brute force PuTTY generated private key passphrases. The source code is based on putty svn version (actually on plink), check http://chiark.greenend.org.uk/~sgtatham/putty/licence.html. This is just a quick-hack, which demonstrates that you should use a strong passphrase for your ...Read More

PuTTY Private-Key cracker