Questions tagged [privacy]

Questions related to data and smart contract privacy. For questions related to user anonymity, use [tag:anonymity].

20 questions with no upvoted or accepted answers
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5
votes
1answer
285 views

Is it possible to run a client behind an onion address?

It is possible to run a bitcoin client which only connects to onion nodes in the TOR network, like that: ./bitcoind -onion=127.0.0.1:9050 -onlynet=tor -externalip=ssapp53tmftyjmjb.onion Is something ...
4
votes
0answers
73 views

Will forthcoming ability to make transactions private hide gas usage and mining information?

I understand that people are working on allowing for more private transactions on the public Ethereum mainnet. This would involve hiding (at the very least) the from, to, value and probably input ...
3
votes
1answer
27 views

What mathematical concepts do I need to master in order to understand the Aztec Procotol?

What mathematical concepts do I need to master in order to understand how privacy in the Aztec Protocol works? When I look at the white paper, I have no idea what is going on; however, I am confident ...
2
votes
1answer
48 views

Save temporarily-shareable private data using Quorum

Can we use Quorum (or any other Ethererum variation) to save private data that can be shared with other parties for a temp period? The use case is that: A patient can share his medical data that is ...
2
votes
2answers
43 views

How to listen to inter-node communications regarding transactions

If I run a full node (say geth) in the Ethereum network, then the way things work out is that every node releases/ announces new transactions as they receive new ones. I'm assuming that my node must ...
1
vote
1answer
58 views

Enigma “secret contract” and concealing transactions history: How is it possible?

Enigma protocol is a second-layer, off-chain network that aims to solve privacy issues in blockchain. However In Enigma blog, there is an article (Link to Article), explaining the secret contract, ...
1
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0answers
28 views

What are the drawbacks of layer 2?

The scalability trilemma states that a blockchain can only have two out the following three properties: decentralization, scalability, and security. Layer 2 protocols aim to make Ethereum more ...
1
vote
1answer
46 views

ENS Domains and new receive addresses for privacy

Currently I use a new receive addresses every time I receive ETH - Ledger Live creates new receive addresses by default when an address has been 'used' as this is good practice in terms of privacy. ...
1
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0answers
110 views

How to fund Ethereum address relatively anonymously? (breaking a link with an already established address)

I want to deploy smart contract. I just don't want people inspecting the code on Etherscan to see what crappy ICOs I've sent my ETH back in 2017... Some options coming to mind: use Shapeshift ...
1
vote
1answer
113 views

Data privacy with block chain in health care?

I'm new to the concept of block chain and have only been reading about it the past four hours. I hear a lot of marketing and business folks tell me that block chain is the way of the future for data ...
1
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0answers
40 views

Share private data and prevent data forwarding

Let's say A has some private medical records of patients and B is a pharmaceutical company who wants to view medical records from A to find out the effect of a particular drug on the patients (run a ...
0
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0answers
30 views

How do I perform a fully anonymous transaction using Stealth addresses in Aztec protocol?

I want to know how to make use of Aztec's stealth address protocol.
0
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1answer
25 views

Privacy concern

I have a smart contract where user submit data based on a task set by the owner, post doing so the owner in another contract offers this data to the highest bidder. Is it possible to ensure the ...
0
votes
1answer
47 views

User anonymity while submitting data in smart contract

I've written a smart contract, that is a crowd sensing system. Where post posting a task user view that task and if they have what I'm asking for/and meet the task requirements they submit certain ...
0
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0answers
14 views

Encrypt and anonymize communication

I want to anonymize the communication between participants (communication = exchange of data, not currency). This should have the effect that two participants send messages to each others but now ...
0
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0answers
23 views

Ethereum fork with Ring Signature at the core layer

Today we can have Ring Signature at the contract-level. https://github.com/HarryR/solcrypto/blob/master/contracts/UAOSRing.sol I wanted to know if there is any fork or project that would like to ...
0
votes
2answers
190 views

Which wallets lets you generate multiple ethereum addresses?

Is there a wallet that lets you generate multiple ethereum wallet addresses? I don't like the fact that I only use one address and that everyone can see what I have. Or are there other ways to keep ...
0
votes
1answer
190 views

How do private members work?

The solidity documentation says that Everything that is inside a contract is visible to all external observers. Making something private only prevents other contracts from accessing and ...
0
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0answers
25 views

Is it possible to migrate your db(users login credentials) to ethereum private network?

I am thinking of migrating db to any of blockchain technologies for security purposes. I have to opt from hyperledger or ethereum private network. Is it good idea or any trades off I should be aware ...
0
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0answers
412 views

Is it possible to make ethereum private by default like how monero has it?

How would ethereum be made private and anonymous by default like how monero has it? Is it possible to turn an token into a fully private anonymous token by default?