Topic: [ANN][XST] Stealth-Coin.com | Tor | StealthText, World's first anonymous SMS Tx! - page 121. (Read 748616 times)

Yeah. I. Ugh. I know some of those words.

Chandran signatures are a sub-linear ring signature system. The memory requirements scale with the square root of the number of keys in the ring. They significantly reduce the size of the block chain for medium and large-sized rings, of about 25 or more keys.

In crypto-currencies the sender must sign away funds, which accomplishes two tasks. The first is to prove ownership of the funds. The second is to authorize the transaction. The very act of signing a transaction conflicts with anonymity because the signature must be validated with a public key that is included in the transaction, and was the destination address for a previous transaction.

For anonymity, a problem arises: how can the signature be verified without revealing the source of the funds?  One way is to create some ambiguity in the transaction and make a signature that authorizes the transaction without revealing exactly which key was used to authorize it. Because the transaction network is a closed system, ambiguity must be created using elements of that system. These elements amount to the public keys found in the block chain.

A ring signature is one in which a set of these keys is used to sign a transaction in such a way that it is possible to verify that the transaction is authorized but impossible to ascertain exactly which of the keys in the ring had the signing authority.

CryptoNote ring signatures achieve anonymity by making a signature with each key in the ring. But there are two types of signatures in a ring signature. One type is for public keys not authorized to sign the transaction and the other type is for the public key that is authorized to sign the transaction. Outside of the individual who created the signatures, no one knows which signature type was used with which key. It's obvious, then, from where the bloat arises with CryptoNote transactions. A transaction using 100 keys must store those 100 keys and their 100 signatures.

Chandran signatures use the same principle except that Chandran signatures employ signatures of an unknown subset of the ring. Using a subset reduces the amount of storage for the signatures, but creates a new problem in that the identities of the keys sub-ring must be obfuscated. This is achieved by using mathematical proofs to assemble the unknown subset from the full ring. These proofs are called "non-interactive witness-indistinguishable" (NIWI) proofs.  Even though the person validating the transaction can use the proofs to derive a subset of the key ring, this person has no idea what the subset is because the subset has been mathematically scrambled during assembly. However, even though the subset is scrambled, it can still be used to verify the transaction signature and validate the transaction.

 
+1 Thanks for explaining

I'm relaxed, I gave him the relevant info it that isn't good enough. I not going to bother anymore.

Do you understand why XST uses TOR. Tor is basically a mesh network comprised of nodes that host users and servers passing IP packets to other nodes, while obfuscating where they originally came from. That's the main feature, one of the side benefits is that it masks your IP address. That is the main point behinds XST use of the network. Do find your payment first the NSA would have to target you, given that thousands of people use TOR everyday, if you didn't give them a reason to target you. Why would the go through all the trouble to track you if you never gave them a reason to begin with. To track a person takes a shit load of time, and somebody of extraordinary ability. With XST your transaction is already encrypted, so for one even if they had your IP address they wouldn't know what it was or if it was illegal, or where it was going.The chances of you getting into trouble practically nil, unless your doing something else on the network that gives them reason to track you.

   Deep breath and just ignore him...  There will be plenty of FUD, that's how it is when you've got an awesome coin with lots of attention.  Focus on the positive.

https://dl.dropboxusercontent.com/u/9200425/xst/Stealthsend_Whitepaper_brief0914.pdf

Oh, my bad. I stop.

Like this motherfucker here is here for a purpose.
I don't think he's want to learn anything or a potential investor.

well said

Hi Everyone!  
I've seen a few coins around and stealthcoin looks promising. It's nice to see hondo working hard and delivering real things for this coin. 
Here is the ama if no one has seen it yet (not sure if it has already been posted )  http://www.reddit.com/r/Stealthcoin/comments/2i1w6s/ask_me_about_tonights_stealthcoin_release/ 
I agree competly with Koontas , especially when we have so much to talk about with stealthcoin! 

Dude I really wouldn't worry about TOR, even without TOR XST would still be anonymous. It's just one feature, the main point being to hide your IP address.

Awesome, thanks for all the hard work!

Github has been updated.

https://github.com/StealthSend/Stealth/

I will agree to this for now.

That is my question exactly. I want to know the relationship, and how Chandran signatures come into play if stealthSend is separate. I hear comparison between StealthCoin and CryptoNote coins, but I believe they use ring signatures on the blockchain. So I confused to how Chandran signatures are used, with stealthsend.

I'll stop from here

+1 to that......

+ 1000 Thanx Koontas!