Hi Greg--
Greg Rose wrote:
At 01:14 AM 10/1/2003 +0300, Benja Fallenstein wrote:
So, anyway, anybody know references? I've not come across any yet.
I know that the technique dates back (at least) to IBM in the 60s.
Cool-- but--
On second thoughts, do you mean *cryptographic* hash tries or hash tries
or plain tries? I know literature on both tries and hash tries (Knuth
claimed to have invented the latter in an Literate Programming exercise)
but not on using cryptographic hash functions & a Merkle hash tree.
Reason for my second thoughts is that Merkle's patent on hash trees
dates in the 80s ;-)
I used to know the name of the inventor but can't bring it to mind at the
moment. The Berkeley UNIX library dbm uses essentially this philosophy,
but the tree is not binary; rather each node stores up to one disk
block's worth of pointers. Nodes split when they get too full. When the
point is to handle a lot of data, this makes much more sense.
(In Merkle hash trees, on the other hand, signature size is minimized
when using a binary tree, at least if I'm not confused right now. :) )
Thanks,
- Benja
-
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