Questions tagged [public-key]

The tag has no usage guidance.

21 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
3
votes
0answers
601 views

Verify Public Key from an RSA SHA256 signature

Given an RSA SHA256 signature (obtained from encrypting a hash using an RSA Private Key), I must assert whether a provided Public Key matches this signature or not. It is imperative that this ...
3
votes
0answers
248 views

How to export extended (master) public key from MetaMask

I want to export extended public key for watch-only access to all ethereum addresses in the MetaMask HD wallet at once. It's very usefull for tracking of all portfolio/wallets in one place, especially ...
2
votes
0answers
294 views

Customizable key generator for Node JS

I've been looking for a javescript/nodejs package that would take a passphrase as input and generate a public key. But I need it to produce the exact same public key with the exact same passphrase - ...
2
votes
0answers
30 views

Direct connection to some peer

I have pub key of some peer (received it in block's header, it is need for some logic). I need make connection to it to send request. If peers know each other it is not a problem. I catch it like ...
2
votes
0answers
225 views

What exactly is an extended public/private key?

How do they differ per derivation level? For example is the extended public key of the master node equivalent for all intents and purposes as a depth 3 node's extended public key? Therefor can I ...
2
votes
0answers
877 views

Ethereum Dapp Account Login Protocol with Metamask

I'm building an Ethereum dapp for users to use with Metamask. We're going to have an account management system and I was trying to follow this post on how to achieve a "password-less" account system ...
2
votes
0answers
70 views

How does a relying party learn a PageSigner server's public key?

Hoping for some insight Into to page signing... I understand that: https://tlsnotary.org/pagesigner.html can provide proofs that a specific web page was returned from a third-party TLS-protected ...
2
votes
0answers
550 views

On Ubuntu, I can't build sha3sum

I was following this article. When I saw that I've to have this keccak256-sum, I moved to this GitHub repo. But, when I am building it, it's giving below issue. $ make cc -Wall -Wextra -pedantic ...
2
votes
1answer
500 views

Generate addresses using xpub

I have a cold storage where I installed BTC-Electrum and LTC-Electrum wallets. So I have took extended master public keys and have generating addresses in my online service. Now I want to generate ...
1
vote
0answers
28 views

Why a buffer is required in the process of creating keys from the seed

This hdkey library is creating a Buffer in the process of creating keys as an example. var HDKey = require('hdkey') var seed = '...
1
vote
0answers
50 views

How to know address belongs to current Ledger, way to get path ? (By using Ledger inside browser - JavaScript)

Ledger can generate many wallet addresses, Is there way how to find out that given public key address belongs to currently connected Ledger device ? (Using JavaScript API in web application) And ...
1
vote
0answers
224 views

How to export the extended public key out of a Ledger Nano S?

In order to provide secure use-once addresses to an application as a application developer I would like to export the public master key from a Nano S. Then I could derive many public keys from it and ...
1
vote
0answers
339 views

How can I create public-private key for a ERC20 wallet that using user's email address?

I am working on a side project that provides a wallet (Think Coinbase, Binance, etc) like interface to users where they will sign in using username and password. To be able to provide a clearer ...
1
vote
1answer
716 views

How do you find the public key used to sign a transaction?

I'm trying to figure out how you find the public key used to sign a transaction from v, r, and s. Before someone says so, this isn't a duplicate of Get public key of any ethereum account. That ...
0
votes
0answers
47 views

Nano S Ethereum Public Key and Chain Code

I'm trying to figure out how to get this repository (https://www.npmjs.com/package/@ledgerhq/hw-app-eth) to interact with the Nano S ledger, the hardware wallet. I can't figure out what tools or ...
0
votes
1answer
156 views

How can I provide an ethereum public address to each user registering on my website.?

is it possible to do using web3.js for a dapp that is going to be run on mainnet.? I have a requirement to assign valid ethereum address to each user who are registering on my website. I want this ...
0
votes
1answer
87 views

Send Tokens To Address, or Public Key?

I had a look at this video https://www.youtube.com/watch?v=vhdDQXLCRpE I can send tokens to MyEtherWallet from my exchange. Do I have to withdraw to my public key? Or, can I send it to one of my ...
0
votes
1answer
653 views

How can I obtain my public key (using web3)

I know my Ethereum address, my Metamask wallet will give it to me, and I can run : web3.eth.coinbase But I want to know what my public key is. Is there any way I can find that ? (the reason I want ...
0
votes
1answer
188 views

Ethereum converting string & random string to private key

I am receiving as input a private key string and a random string. Goal is to get public key and address. When I am receiving the string I do: var hash = Crypto.util.hexToBytes(privStr); this.priv = ...
0
votes
2answers
174 views

How does transaction is encrypted and decrypted? Should all the peers hold the public key of every other peer?

Let's say Peer A sends a transaction to contract.How peer B and peer C will be able to see this.Does they require to do encryption.If so then how?Does each and every peers should have the public key ...
-1
votes
1answer
46 views

Which node server for creating Ethereum keypairs and sending transaction programatically?

I need to create Key Pairs, and send transactions from my server program (probably node.js.) The code part is clear -- at least in terms of available examples -- and I know where to go with it. My ...