[BitTorrent] Back to Merkle Hash Trees...
Olaf van der Spek
OvdSpek at LIACS.NL
Sat Feb 5 07:43:21 EST 2005
Justin Cormack wrote:
>>Elliott Mitchell wrote:
>>>One you might think about helping me murder is the "THEX" design various
>>>folks have been advocating. THEX distinguishes leaves from internal nodes
>>>by appending a byte depending on whether it is leaf or payload; *that*
>>>is bogus! (kills alignment, makes testing expensive)
>>It's not. You do not have to put the byte physically in front of the
>>block. You can 'hash' the byte and then the block.
> No you cant, sha1 is block based and you cant hash less than a block of
> 64 bytes at a time. So there is an alignment issue.
Hmm, you're right. The SHA1 implementation I use is copying the data
anyway, so in this case it wouldn't matter.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
<*> To unsubscribe from this group, send an email to:
BitTorrent-unsubscribe at yahoogroups.com
<*> Your use of Yahoo! Groups is subject to:
More information about the BitTorrent