Ninjastic
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Board Announcements (Altcoins)
Re: Nxt :: descendant of Bitcoin - Updated Information
by
ricot
on 11/01/2014, 15:45:07 UTC
Quote from: coolfish on January 11, 2014, 03:24:30 PM
Quote from: nexern on January 11, 2014, 03:16:05 PM
Quote from: coolfish on January 11, 2014, 02:44:25 PM

nxt system should have a validation function to verify the account is available.

e.g:
acct: 209832084023840384023
MD5 & SHA Checksum: DfwSgeH

so the new account: DfwSgeH-209832084023840384023

Check the MD5 or SHA to verify the account available..

thanks for this example coolfish,
could you explain further please how this checksum approach can verify account available?

it just a simple example.

acct: 209832084023840384023
MD5 & SHA Checksum: DfwSgeH    // from MD5("accountid")

so the new account: DfwSgeH-209832084023840384023  // from  substr(MD5("accountid"),6)+ "- accountid"

//substr(MD5("209832084023840384023"),6)=="DfwSgeH"
if( substr(MD5("209832084023840384023"),6)==substr("DfwSgeH-209832084023840384023",6) ) it is available..
else unavailable.

Each new account is password and userid combination : password-userid

Please see my thread about that in the other forum: https://forums.nxtcrypto.org/viewtopic.php?f=17&t=524
We can do a lot better than merely detecting if the user made an error. With the method presented there, we can correct what the user typed. - That's 2nd gen. :p