Public Releases
The first public release of Crack was version 2.7a, which was posted to the Usenet newsgroups alt.sources and alt.security on 15 July 1991. Crack v3.2a+fcrypt, posted to comp.sources.misc on 23 August 1991, introduced an optimised version of the Unix crypt function but was still only really a faster version of what was already available in other packages.
The release of Crack v4.0a on 3 November 1991, however, introduced several new features that made it a formidable tool in the system administrators arsenal.
- Programmable dictionary generator
- Network distributed password cracking
Crack v5.0a released in 2000 did not introduce any new features, but instead concentrated on improving the code and introducing more flexibility, such as the ability to integrate other crypt variants such as those needed to attack the MD5 password hashes used on more modern Unix, Linux and Windows NT systems. It also bundled Crack v6 - a minimalist password cracker and Crack v7 - a brute force password cracker.
Read more about this topic: Crack (password Software)
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