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Questions tagged [authentication]

The tag has no usage guidance.

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0answers
47 views

Login to an ethereum dapp on sending a transaction?

I'm trying to build a sample dapp. The login process in ethereum dapps usually involves signing a message from metamask to prove ownership of an account. Is there a way we could design login in such a ...
0
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2answers
39 views

HMAC-x implementation for solidity

Is there any implementation of HMAC-SHA1 or HMAC-SHA256 or any other hashing algorithms for solidity? I found this but it's not working.
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1answer
50 views

Is there a way to know the REAL msg.sender?

I want to know the real msg.sender of the transaction. Which this means is, if I use truffle console I can change the msg.sender by using {from: another address}. So let's say my address is A, and ...
1
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1answer
125 views

Dapp User Account Storage and IPFS/infura

I'd like to build a dapp utilizing the power of the Ethereum blockchain and IPFS. Right now, my plan is to have users sign up to use the app and store their account data + files on IPFS through a ...
1
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2answers
51 views

How to authenticate a smart contract

my Question is, how the identity of a smart contract can be verified, or basically how to authenticate a contract. As far as I know a contract does not have a private key and also cannot keep one, ...
2
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3answers
140 views

Is there anything that is equivalent of Hyperledger Fabric's Membership Service Provider in Ethereum?

Is there anything that is equivalent of Hyperledger Fabric's Membership Service Provider in Ethereum? The power of an MSP goes beyond simply listing who is a network participant or member of a ...
2
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0answers
33 views

Authenticating accounts in Ethereum using web3js

Is a there a way to authenticate accounts in Ethereum using Web3js? Or if there are any other ways to authenticate accounts? We are building an application where users can register in our system. ...
1
vote
1answer
296 views

How to use recovery mnemonic in metamask to import account instead of private key?

We can import account by importing private key of the account. While creating a new account we give passphrase to encrypt the private key. How to import an account in metamask using the mnemonic?
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1answer
40 views

How to authenticate user using passphrase?

While creating ethereum account(geth) account we need to enter the passphrase for respective account. Is there any way to authenticate the user using that passphrase from a front end?
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1answer
34 views

go-ethereum: deploy contract with pub + private + key + password

I'm not sure if I create the right title. But the problem is: I do have a public and private key from ganache network. I want to deploy contract using go-ethereum which requires me to setup keystore ...
1
vote
1answer
170 views

How to unlock account from another node in same blockchain network?

I have deployed DAPP on two node private ethereum blockchain network. According to this question it is not possible to access all accounts across multiple nodes. My question is consider a scenario ...
2
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1answer
202 views

Uport for private blockchain network

Can I use uport for authenticating users in a private blockchain network ? If yes, Are there any tutorials or implementations available for the same ?
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2answers
249 views

Authenticate transaction in Web3.js application with password

I have a simple web3.js based app and like to call a method from an contract. For this method an authenticaten is needed. I found some examples in the web using web3.eth.accounts.signTransaction But ...
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0answers
39 views

Connecting an Ethereum account with a Twitter user

Is this a sensible flow for verifying that an Ethereum account is controlled by the same person as a Twitter account? User logs in to my site with Twitter I get an auth token back from the Twitter ...
3
votes
3answers
462 views

Authentication or Identification of smart contract

This is more of a general discussion then a direct question. I am trying to find a way for a smart contract to be identified somehow by another one. My final goal is to allow some functions in "...
0
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1answer
555 views

RPC authentication in Ethereum?

As far as I understand Ethereum uses JSON-RPC to communicate between clients. What is the authentication mechanism? That is, how does the network know that the RPC request is coming from a legit ...
5
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1answer
710 views

Authentication using ethereum account

Trying to figure out a way to Authenticate users them having an ethereum account. New to ethereum and cryptography in general and my thought may not be adequate. In essence I am thinking to be able ...
1
vote
1answer
487 views

Is it possible to create an X.509 certificate from an Ethereum/Bitcoin private key?

We all love Ethereum/Bitcoin (i.e. EC secp256k1) private keys, because they let us sign transactions. However, browsers don't support those keys for authentication -- what they do (sort of) support is ...
3
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1answer
1k views

Restricted Access / Authentication for a Remote Geth Node

I have setup remote geth nodes that are constantly running as web3 providers to support my DApp. What is the best way to restrict access to make sure that only authorized clients (my server) are ...
11
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3answers
4k views

What are the best practices to allow user signup and login for a dapp?

From what I have researched, it seems that all of the methods for allowing a user to signup and login for an Ethereum dapp are very cumbersome for the user to use. What are the best practices to allow ...