All Questions
Tagged with authentication solidity
14 questions
1
vote
1
answer
114
views
Moralis.Auth.verify 400 bad request error
I'm following the moralis tutorial to build an authentication and authorization system with moralis and reactJS https://docs.moralis.io/authentication-api/evm/how-to-authenticate-users-with-metamask-...
- 93
2
votes
1
answer
150
views
What's the best authentication/authorization system for DApp using ReactJS and Metamask
I'm building a DApp with reactJS for the frontend and solidity for the backend. I want to build a solid authentication/authorization system possibly using some libraries but i can't find anything that ...
- 93
0
votes
1
answer
57
views
Is it possible to do two-factor verification (email, text, let's say) using ethereum?
One of the values of a trusted, centralized authority is that it can use two-factor authentication to establish a permission to do a given action.
Is it known whether an ethereum smart contract can ...
- 103
1
vote
1
answer
198
views
I can send emails from a smart contract?
For security, i need to generate a smart contract from authentication and the way that was solicited is use email and send a token to this email, so i think i can generate a token in my smart contract ...
- 11
0
votes
1
answer
135
views
Register users only through DApp sign-up
I am making a DApp where users need to be registered in the Solidity smart contract to perform some actions, for example:
function publish (string memory _itemURI) userOnly public {
// Publish ...
- 198
1
vote
1
answer
2k
views
how I can sign message using web3js?
I know that I can sign a message using web3js, but I don't know how I can do that, then how to verify that signature using ecrecover()?
- 11
0
votes
1
answer
754
views
Infura with JWT authentication
I am using wallet connect an Open protocol for connecting Wallets to Dapps with web3 modal sdk . the wallet connect requires an infura key. Since the wallet connect is executed on the borwser it ...
- 143
1
vote
1
answer
32
views
How do I retrieve user data once I have incremented count?
I am building a web application that can store and retrieve user data. Once I add A User i increment count by 1. Once incremented the users data is added and I can fetch the data by the fetchUser(...
- 11
0
votes
1
answer
203
views
Authentication between smart contracts based their addresses - Is it safe?
thanks in advance for your time and intellectual contribution.
I am working on a project in which we have contracts interacting which each other.
More specifically, there is a "father contract&...
- 29
0
votes
0
answers
276
views
Getting empty object in web3js
I have a user registeration logic defined in solidity which used to work fine when I set an registeration fees of 0.5 ETH for testing purpose.But now, when I remove the register fees, I'm not able to ...
- 11
1
vote
2
answers
752
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.
0
votes
1
answer
178
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 ...
- 191
2
votes
1
answer
363
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 ?
- 2,577
17
votes
4
answers
10k
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 ...
- 347