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Re: passwords and crypt?



On Fri, 30 Nov 2001, Roger Keays wrote:

> 
> I'm not sure if this is common knowledge or not, but I have just noticed 
> the effects of having the first two letters of your password the same as 
> the first two in your login name... You can use any extension of your 
> password!!
> 
> e.g., on my Woody box I added a user called 'ron' and his password was 
> 'roniosko'. He could login in with 'ronioskos', 'ronioskoasdfasd' and so 
> forth!
> 
> I tried a few more and had the same results. This is something to do 
> with the random salt right?
> 
> Can anyone else reproduce this?
> 
> Cheers,
> 
> Roger
> 
> 
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> 
hi Roger,

maybe you dont use MD5 passwords, so only the first 8 characters will be
"compared". see

http://www.debian.org/doc/manuals/securing-debian-howto/ch3.en.html#s3.4

for more information.

tom
------				.-.
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