Re: [SDC] Shadow | 1st OS Stealth Address | iOS+Android Staking | PoS-SPV

So, I just went through the web page, and read through twenty+ pages of this thread, and can not figure out what sdc is promising in terms of "zk". If you could excuse me for my laziness for not digging deeper, could someone respond to three quick questions?

1. With the beta that is being tested now, are the devs planning on implementing Zerocash, Zerocoin, or something else?
2. If Zerocash, how do you set up the security parameters? This requires trusted third parties.
3. If Zerocoin, how do you set up the security parameters? Do you use RSA UFOs? If so, how where these generated, and what is their bit length?

Thanks.

hi,

shadow simply has zk-snarks and ring signatures and has its own built-in which doesnt need 3rd party and has nothing similar to zerocash, etc.

A real (not vaporware), working, ZK implementation with ring signatures

sdc dev and whitepaper will explain it in details...

by the way...welcome on board guys....nice to have new bloods here

Thanks for throwing out a clue on how SDC handles the zerocoin initial seeding parameters issue. This is the first and number one question to ask when a coin claims they are the first to implement zerocoin. SDC has done an excellent job with it's website and OP so it's a pity there aren't a couple lines of explanation to address the seeding issue on everyone's mind. There's plenty of discussion on Anoncoin's thread about Gnosis' approach. In contrast, there's no mention of handling the initial seed parameters with Zerovert and the info on this coin is so scant it smells like scam.

Info is in the OP, there's plenty of infographics that break down the project. SDC has never claimed to implement zerocoin or zerocash.

To answer the question: Shadow is not using zerocoin or zerocash.. its a unique approach to achieve anonymity that uses dual-key stealth addresses, unique ring signatures and non-interactive zero knowledge proofs. Not one line of code is shared with zerocoin/zerocash and shadowcash so it doesn't share the trust issues associated with ZC. One needs to look at Shadowcash as a unique protocol; a first of it's kind not associated with any prior work.

A short explanation taken from IRC:

"@SDCDev: only really SDC -> SDC is traceable.. SDC -> Shadow creates an anonymous output, and Shadow -> SDC redeems an anonymous output, but in order to make it anonymous, you need to use a certain number of rings.. we use ring signatures which are then turned into a proof (zk), so its similar to cryptonote, except without sending the whole signature."

The attached graphic explains the function of each property related to the protocol. This is meant to be an brief infographic overview of the methods used to achieve anonymity. It's not a whitepaper and as stated in the infographic a detailed whitepaper is in the works that should be released shorty. The devs here are working their butts off to push the envelop of what's possible so excuse them while they make time to document everything correctly before releasing a whitepaper. Devs are already making improvements to the model to automate everything based on feedback from testing.

https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F2XTQhYF.jpg&t=546&c=FReoKtrmHHKDDw