Storing Passwords Post: 302928987

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Top Forums Web Development Storing Passwords Post 302928987 by jim mcnamara on Tuesday 16th of December 2014 05:24:40 PM

12-16-2014

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Source code gives them where the keys are stored, if they can get to code.

The point is not any of the above. Where do you store the key to decrypt the half-key?
This is a logical fallacy. It is called circular reasoning. I need a key to decrypt a key. I still have to store that secondary key somewhere, or the system will have to regenerate it. Regenerate means I can see it in the source. Storage means it is a sitting duck, unencrypted.

I agree that simply having the algorithm and knowing the block cipher is not a complete solution, but the logic behind this needs some work. Having the source also means shell code or another crack is now a possibility.

There is far more to security than passwords. We have a large number of fairly insecure old unpatchable windows servers. They have many known exploits. They are pretty safe.

Why? Because getting to them externally is really hard, you have to hack several external software and physical barriers to get at them. But they could be trashed by an internal employee easily. So we have to have trust somewhere. ROI.

jim mcnamara

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NOLOGIN(5)						      BSD File Formats Manual							NOLOGIN(5)

NAME

     nologin -- disallow logins

DESCRIPTION

     Programs such as login(1) disallow logins if the nologin file exists.  The programs display the contents of nologin to the user if possible
     and interrupt the login sequence.	This makes it simple to temporarily prevent incoming logins systemwide.

     To disable logins on a per-account basis, investigate nologin(8).

SECURITY

     The nologin file is ignored for user root by default.

IMPLEMENTATION NOTES

     The nologin feature is implemented through login.conf(5), which allows to change the pathname of the file and to extend the list of users
     exempt from temporary login restriction.

     PAM-aware programs can be selectively configured to respect nologin using the pam_nologin(8) module via pam.conf(5).

     The nologin file will be removed at system boot if it resides in /var/run and cleanvar_enable is set to ``YES'' in rc.conf(5), which is
     default.  Therefore system reboot can effectively re-enable logins.

FILES

     /var/run/nologin  default location of nologin

SEE ALSO

     login(1), login.conf(5), pam.conf(5), rc.conf(5), nologin(8), pam_nologin(8), shutdown(8)

BSD
								   May 10, 2007 							       BSD