Questions tagged [public-key]

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25 questions with no upvoted or accepted answers
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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 ...
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0answers
293 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
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1answer
753 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 ...
2
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0answers
326 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
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0answers
33 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
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0answers
232 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
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0answers
1k 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
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0answers
72 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
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0answers
600 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 ...
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0answers
36 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 = '...
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0answers
81 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
1answer
198 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 ...
1
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0answers
234 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
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0answers
374 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
778 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 ...
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0answers
22 views

how to get public key in ethereum

Error Says Method shh_getPublicKey not Supported. How can i solve this and get public key.
0
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1answer
70 views

Can we decrypt a message by using private key through Metamask

Say I have a hash of a file which is stored on IPFS.I want to encrypt the hash with public keys of few people. How can I do the encryption of the hash (encrypted hash should be stored on smart ...
0
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1answer
391 views

I have my public key and seed phrase, but private key is lost (MetaMask)

I lost access to a specific address generated in MetaMask web wallet, I still have the public address and my seed phrase. Re-creating my account using the same seed in MetaMask isn't showing that ...
0
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0answers
39 views

Can a new deterministic address be generated with only an Ethereum public key?

BIP-32 defines a way to generate a new address with only knowledge of only the public key for that wallet Deterministic wallets ... permit schemes where one can calculate the public keys without ...
0
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1answer
43 views

EthereumJS returning wrong public key

I'm using https://iancoleman.io/bip39/#english to generate a random 12 word mneumonic with the following settings. Mneumonic language: English Coin: Ethereum Derivation Path: BIP44 It generated the ...
0
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0answers
55 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
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1answer
836 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
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1answer
222 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 = ...
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2answers
183 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
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1answer
53 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 ...