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On Fri, 18 Nov 2005 22:01:27 -0800 "Robin H. Johnson" |
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<robbat2@g.o> wrote: |
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| First, the blatantly obvious, for the benefit of same developers, even |
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| though it's not relevant to signing. It is still a weak-point and does |
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| need to be addressed. Multiple-hashes! |
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There is no proof that multiple hashes gives you any security beyond |
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the strength of the single most secure hash algorithm. If you have two |
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signatures, one of which gives you an effective strength of 100 bits |
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and the other of which gives you an effective strength of 80 bits, the |
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overall effective strength is not 180 bits. |
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|
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See, this is why you need to be careful. Some things that you'd think |
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were 'obvious' probably aren't actually true... |
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|
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-- |
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Ciaran McCreesh : Gentoo Developer (Look! Shiny things!) |
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Mail : ciaranm at gentoo.org |
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Web : http://dev.gentoo.org/~ciaranm |
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