[unix] Ken Thompson’s Unix password … Cracking passwords from late 1970s. ‘However, kens password eluded my cracking endeavor. Even an exhaustive search over all lower-case letters and digits took several days (back in 2014) and yielded no result. Since the algorithm was developed by Ken Thompson and Robert Morris, I wondered what’s up there. I also realized, that, compared to other password hashing schemes (such as NTLM), crypt(3) turns out to be quite a bit slower to crack (and perhaps was also less optimized).Did he really use uppercase letters or even special chars? (A 7-bit exhaustive search would still take over 2 years on a modern GPU.)’

Ken Thompson’s Unix Password Decrypted

This entry was posted on Friday, October 11th, 2019 at 11:45 am and is filed under History, Tech.

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