Ethereum Wallet – Best Android Ethereum Wallet for Private Blockchain

androidprivate-blockchainwallets

Is there any android wallet that can be customized to operate on a private Ethereum blockchain?

I need to send/receive transactions and run simple queries on the blockchain data.

I'm not looking for an app which functions through RPC. I want an app which actually runs Ethereum node on an android smart phone.

Best Answer

We've been working on an Ethereum Light Client targeting Android & iOS for a while now.

What you want is in @karalabe's geth-sandbox here you will find example projects that include a cross compiled go-ethereum lib. You will also want to build your lib using @zsfelfoldi's light-stable branch which will give you access to the LES protocol so you won't have to synchronise the full blockchain on device.

There is also an Ethereum on Android page in the Ethereum github wiki.

If you're interested in our project check out Status.im - we'll be talking more about it at DEVCON2 - and will be opening our source around the same time, which will save you some leg work.

Related Solutions

Private Blockchain – How to Send Transactions to a Private Network?

I have the solution thanks to @karalabe in this message : https://gitter.im/ethereum/go-ethereum?at=57737aed1ac8bd1a4d8c8fef

Actually the mining node has to be synced before mining transactions from other nodes. If there is only one miner in the network it won't get blocks from other nodes and consider itself not synced so it doesn't include transactions before full synchronization.

So I just added a node to the network (Ubuntu Virtual Machine) and mined some blocks with it. Once both nodes are synced they can mine blocks with transactions from any node in the network.

How to Connect an Android App User to Ethereum Network

Is the above architecture safe? (What happens if server is compromised of the server is biased)

Provided the users keys are stored only locally on the users device, this is a pretty safe architecture. However, I can imagine a possible attack vector where traffic between your users and your node is compromised, and incorrect information about the statement of the network is provided, causing your users to make ill-advised transactions. I'm not sure how likely that actually is for your application, but if it seems like something you should defend against, then using a secondary source of truth would help.

Do I need to create a Full-node Ethereum client corresponding to every Android app user.

What type of user's data will the Full-node server need to process a transaction on its behalf?

None, provided transactions are all properly signed before sending

To interact with the remote node, you can just provide the ip and port to web3.js like this:

web3.setProvider(new web3.providers.HttpProvider('http://ipaddress:port'));

Best Answer

Related Solutions

Private Blockchain – How to Send Transactions to a Private Network?

How to Connect an Android App User to Ethereum Network

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