Source Code for SHA512 on MS Excel or spreadsheet app? Provably Fair Poker

[Dabs]

Hi,

I've been looking and looking, on google, on stackexchange, on vb/vba sites, but just in case, someone might have already found a verified and working SHA512 implementation on MS Excel 2003 (Windows XP) or equivalent spreadsheet application. I can download and use any open source or free spreadsheet app, like OpenOffice or LibreOffice.

I found SHA256 that works in Excel, which is what I use to calculate the winners for my lotto game. So maybe, someone found one or modified something that does SHA512.

I understand there is source code for every other programming language and I will eventually port whatever it is I am doing to PHP or some web server based implementation.

So I just need this for quick testing without having to go compile something every time I need to test a few strings.

I need either the source code or macro code, no matter how slow it is, as long as it works. It does not have to be optimized.

Thank you for any help or any link that you could point me to, that I have not yet found.

I am trying to make some "Provably Fair" games and I'd like to migrate from SHA256 to SHA512.

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[Dabs]

No one? Nothing? I guess I am on my own then. I did find source code for VB6, so I might consider attempting to port that to Excel VBA / Macro.

Also, instead of starting another thread, I'd like to ask, what do I need to start an online gambling site, like Poker for example? There are already SealsWithClubs, SatoshiPoker and a few others. They all seem to use either Flash, HTML5, or a downloadable game client.

Obviously, I can't do this on my own, ... but assuming I'd want to enter a market that is dominated by giants such as PokerStars, aside from a domain name, hosting, and some developers, what else do I need? (Let's pretend I got all the licenses needed as well, but if I don't accept money, that might not be needed.)

[doof]

Sorry, i wrote a reply, but mustn't of worked.

.net has sha256 built in Security.Crypto namespace.   Now you can use .net components in vb6 or vba, using a com class wrapper.  Its messy but works.

I havent done it for about 8years, so my memory is a bit fuzzy.

[BetWithCoins]

Im about to launch www.betwithcoins.com sports betting without signup.  PM me if you'd like to work together.  I have a few other games i want to develop too.

[tactrad]

No one? Nothing? I guess I am on my own then. I did find source code for VB6, so I might consider attempting to port that to Excel VBA / Macro.

Also, instead of starting another thread, I'd like to ask, what do I need to start an online gambling site, like Poker for example? There are already SealsWithClubs, SatoshiPoker and a few others. They all seem to use either Flash, HTML5, or a downloadable game client.

Obviously, I can't do this on my own, ... but assuming I'd want to enter a market that is dominated by giants such as PokerStars, aside from a domain name, hosting, and some developers, what else do I need? (Let's pretend I got all the licenses needed as well, but if I don't accept money, that might not be needed.)

Did you ever make any progress on this?
I'm trying to connect Excel to Cryptsy and need the 512 to make it work

[everythingbitcoin]

Hope this is what you're looking for.

https://polarssl.org/sha-512-source-code

If not, I'll keep on searching

Best of luck

EDIT:
A couple more finds..hope these are of help

http://stackoverflow.com/questions/11394811/compute-sha512-on-vba-excel-2003


http://www.karenware.com/powertools/pthasher.asp





1PwJU4fD54TSdSr63PLyqE8cwTxKERPouE

[Dabs]

I found some slow but working code for another dialect of basic, PowerBasic. In my main poker thread, I showed how I shuffled a million decks using SHA512 overnight (about 10 hours?) using my slow laptop.

It uses CryptAcquireContext from the Win Api.

So, no, I haven't gotten a working SHA512 for Excel though. Sorry.

I also saw Karen's hash thing, but it was a head ache trying to port it over to VBA or even to just use it for plain VB6.

[stamen123]

Regarding the provably fair poker you need to contact an already working online poker network - I have contacts to many of them and could help you with this if you have the idea how to make such a provably fair random generator.

Such a site will kill Stars, iPoker and all - and they will fight you way more than currently banks fight the bitcoin based businesses.

The issue with a provably fair poker is how you want to implement it in such a way that no one is able to see the cards dealt to other players while proving your fairness...

I have read many ideas on proving poker fairness the crypto-way but none of them has the power and simplicity used by SatoshiDice to prove they are fair... Tell me yours.

P.S. I am the owner of www.igrach.com