[mnet-devel] FEC, blocksizes, chunking

[Jim McCoy]

On Wednesday, April 16, 2003, at 09:09 AM, Hauke Johannknecht wrote:
[...]
>> I suspect that Tschechow specified blocklets in order to get 
>> cryptographic
>> authentication on each transferred unit.
>
> i think we need authentication for the smallest transferred unit.
> at the moment, these are called blocks, and are authenticated by
> their sha1 identifier.

I think that you need authentication for the smallest unit you will 
pass to a higher level service, but I am not convinced that there will 
be a need to do authentication on anything other than complete blocks. 
Why bother? I don't think that there is much benefit to be gained by 
sharing blocklets among peers, so why authenticate the blocklets? I can 
understand why, in a perfect world, we would want to close off a 
relatively insignificant and almost impossible to capitalize upon 
attack vector, but I don't see this as being worth the effort given 
other priorities.

Jim



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