Hello, We have implemented an instant windows password cracker named RainbowCrack. It is based on Philippe Oechslin's faster time-memory trade-off technique. (http://lasecwww.epfl.ch/php_code/publications/search.php?ref=Oech03) This tool is an specialized LanManager hash cracker. On an 666MHz workstation, we can: 1. Crack 10 alpha passwords in 74 seconds 2. Crack 10 alpha-numeric passwords in 184 seconds It is absolutely cryptanalysis! visit the site: http://www.antsight.com/zsl/rainbowcrack/ Zhu Shuanglei 2003/9/10