Topic: [SC2] just another Proof-of-Storage coin (Read 3652 times)

The best defense you're going to have against brute force attacks is keeping the encryption algorithm out of the specification, and instead make it client side.

For standard, non-quantum computing, your usual AES/Twofish/Serpent encryption at 256bits is going to be sufficient to stop anything for the next few decades, even if non-quantum computers get much, much faster and computing clusers also get much, much larger. If you're worried about 1 being broken (because the crypto gets reversed or something), you can chain them together. This will make encryption a lot slower, but then in order to break through, all 3 of the algorithms will have to be broken. (Chaining essentially makes your encryption as strong as the strongest of the 3 - not stronger, but since you don't know which of the 3 is the strongest (none have been broken yet), it's still a useful thing to do).

For quantum computing, I don't think there's an encryption algorithm that's been created which is safe from quantum attacks. Luckily, quantum computers are probably a few decades away from being able to tackle standard encryption tools. But if IBM suddenly releases a really powerful quantum computer, I don't think there's anything we can do about it. So instead you just have to make your protocol able to adjust as soon as better encryption techniques are developed.

Hey Taek! Glad to have feedback from you. I'm worried about brute force attacks, since the chain is public, if someone has a copy of it, a powerful computer in the near future could decrypt the files. What is your approach to that?


SC2 tries to be libre, so everyone can use the network, yet the market needs several alternatives, there is no fun without competition.


Me too!

Hey, Siacoin dev here. Siacoin can definitely be used for personal and private files, needing only that encryption be applied. Once we have a beta, all files will be encrypted by default, unless the user explicitly specifies that the file should not be encrypted.

Of the multiple cloud storage protocols under development (Ethereum's seems to have, MaidSAFE's got one, there's datacoin, there's Sia, Storj, Filecoin.io, Filecoin.org, and potentially others as well), is there a particular reason that you've chosen to make your own? Would you be interested in seeing your particular use cases weaved into another proof-of-storage coin? Sia in particular is meant to be the cheapest available cloud storage solution, in addition to being very fast and robust, private and secure, and of course decentralized.

Happy to see more people working in this space of course, the more thought that goes into this type of project, the closer a full fledged proof-of-storage coin is to reality.

I'm still around with the idea, just would like to see more interest from people, they want to see something in action, but one man can't do everything, that is not fun.

ended?

xcloudcoin looks like a lot more than file storage, and looks closer to etherum (cloud services over a distributed network) for me.

siacoin is for sharing files publicly like bittorrent. The network hides the identity of the person uploading the files. Yet this concept is closer to SF2 but different purpose.

SF2 is for storing private files, similar to dropbox and google drive, yet there could be a file sharing feature in the future.

have u seen xcloudcoin or siacoin, is the idea similar? compare?

There is some interest on this project so far. I'm awaiting for feedback on the technical specifications.

Btw, apart from thinking on the protocol, nodes, etc. There are 4 things I'm thinking about:

1. The user interface: "SC2 file explorer". SC2 has to be a decent product. What do you guys think about making it similar to Dropbox? Perhaps not deeply integrated to OS file explorers at the beginning, but a program called "SC2 file explorer" would be the first thing to work on. It should embed the sc2 and a wizard that allows to configure how many storage room will be used to host chunks.
2. Cloud storage limits and business model: There will be 2 ways to pay for storage room 1) a minimum 1:10 relation between the amount of available cloud storage one can use and the amount of storage one is hosting for the network. One gets paid for the difference. 2) To pay an x amount of SC2 per megabyte.
3. Connectivity: The cloud storage will be reliable only if enough clients are connected, this is the same as torrents, and that is why the SC2 network needs replication, some files (specially the big ones) will take about 24 hours to be downloaded
4. Unbreakable encryption algorithm: The main reason for splitting files in chunks and to distribute several copies of those small pieces across several different hosts, is simple: obfuscation, but computers will get more powerful in the future, so an old copy of the network would be eventually decrypting files in the future. There has to be some kind of mixer or mutexer with an increasing difficulty that obfuscates the files enough to delay decryption time to at least 100 years (when one is supposed to be dead and will not care about privacy ). Other alternative, is to filter out 10% of random parts of each chunk, which should be stored in the original source only, with a file descriptor, and store the other 90% in the cloud. This will increase difficulty of bruteforce attacks by million times!

Well, there is no such thing as "unbreakable", but SC2 aspires to be the hardest thing to decrypt ever.

I invite everyone to contribute with ideas, we could have a lot of fun designing a decentralized secure model and it will worth the effort!

how is the project going?

Great idea !

any real development? This could attract attention

Good news!

Github just let me register a new organization under the SC2 name, you are welcome to send your insight to the issue queue: https://github.com/sc2/core/issues/new

That is the question I was expecting!! Seeing fair interest for this project in this thread so lets move a bit forward.

I created a wiki page on devtome with next steps: http://devtome.com/doku.php?id=sc2_secure_cloud_storage_coin

it maybe a great idea,how do i join?

any further info?

More detailed info needed.

watch this.

I'll post this for future reference

I think the project is quiet difficult to implement.

Think about the difficulty of setup one distributed database. and SC2 is more complex than that because of one more feature of decentralized .

a great concept. keep working