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On Tue, Jan 26, 2010 at 04:34:56PM -0800, walt wrote: |
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> After thinking awhile I realized that pam can be used to |
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> combine muliple forms of authentication to reduce the well |
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> documented risk of single-factor authentication (like our |
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> traditional password system). |
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> |
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> Example: if I have an ordinary password, plus an ssh key |
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> stored on a USB stick, plus a biometric device like an |
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> eye scanner or a fingerprint scanner, I can then use any |
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> or all of those methods to identify myself to the system |
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> by configuring pam in the appropriate way. |
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Yes. |
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First look at the PAM configuration section of this: |
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http://www.thinkwiki.org/wiki/How_to_enable_the_fingerprint_reader#Login_via_pam_bioapi |
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Now if instead of having |
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auth sufficient pam_unix.so ... |
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auth sufficient pam_bioapi.so ... |
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which says that either password log-in OR fingerprint scanner is |
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enough, you change the first line to "auth required ...", per the docs |
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http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/sag-configuration-file.html |
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you will then have a behaviour where BOTH password and fingerprint is |
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involved. I think PAM is a Pretty Good Idea and its implementation is |
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Very Cool, but I also think it is completely unnecessary on _my_ |
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laptop. |
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Cheers, |
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|
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W |
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-- |
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Willie W. Wong wwong@××××××××××××××.edu |
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Data aequatione quotcunque fluentes quantitae involvente fluxiones invenire |
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et vice versa ~~~ I. Newton |
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