Questions tagged [private-key]

in assymetric cryptography, the private key is used to unlock, sign or decrypt

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Is it safe to publish a raw signed transaction in etherscan?

I'm making a flow of creating a transaction offline, and publish it using external node (etherscan.io). So the flow will go from here: I will use this code to generate a signed raw tx var { ...
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Non ERC 20 coin sent by mistake to MyEtherWallet (MEW)

Newbie here - apologies for anything inappropriate and lack of tech expertise. I made a dumb mistake and sent some THETA tokens to a MEW Ether address. My bad - I had not realised that THETA had moved ...
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If I don't use metamask who manages the private key and the incoming or outgoing ether?

I want to build a dapp without using metamask but web3.js and a node (geth / parity). So if I use this second method what happens when ethere needs to be sent to an account?
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Exchange wallets, hardware wallets and web wallets: Why don't they all have a seed recovery phrase?

Here's what I think is going on Exchange wallets for ether have no seed recovery phrase. Only one's log-in and password to their account on the exchange grants access to their wallet. Hardware ...
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34 views

Generating a private key from a single mnemonic

I want to generate an Ethereum private key from a single word mnemonic. For example, (1) I could use keccack256 online tool to transform a word to a private key. Would this be a valid key? Are there ...
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Please help to detect ETHEREUM JSON key file

Time: 2014 year. I have next key: {"public_key":"02f6197ef15d989898b11c6c0axxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", "data":"...
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28 views

one wallet address, multiple users, what is the best way to keep the private key secured?

I would like to develop an application using the web3j. However, it needs to be just one wallet that multiple users will deposit and withdraw from. The allowances are kept in a centralized database. ...
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37 views

Recover Lost Funds from Botched ETH Deposit Without Access to Private Keys?

I'm using the wei approach (4 right-most zeros) as a marker to track user deposits on my site. In short, every user on the site is told to append a custom amount of "wei" to every deposit ...
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Why is sending ETH from multiple accounts in a single transaction deemed a “security hole”?

A user on Ethereum SE posted the following As you noticed, there is no way to send a single from multiple addresses. There is always just one sender. For Ether transfers the Ether value is always ...
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285 views

Recovering private key from keystore file

Recently I came across my old keystore file from the original Ethereum Wallet that I used back in 2017. Unfortunately I cannot find the private key or password for that wallet anymore, big problem of ...
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What is a better way to use whisper to implement a chat room?

I want to use whisper to implement a chat room in my dapp. I learned about whisper, if you want to realize the function of private chat, you need to know the public key of other people. For a user who ...
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1answer
25 views

Finding Wallet Password Using Known Private Key

I have a bit of an odd question, I have two wallet files that I encrypted a few years ago, both of them have the same password, I have the private key for one of the wallet json files (MEW structure). ...
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Reliable and universal account recovery

I am producing kinda salary system. If somebody loses an account, he or she loses the salary for his entire lifetime!! So need some account recovery. First I wanted to use my own recovery system with ...
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How to get the private key from the keystore file

The book Mastering Ethereum explains the keystore file in geth as follows: "The private key in the JSON file is not directly encrypted by the password. On the contrary, the password will be ...
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Will Ethereum generate the same private key? [duplicate]

We know that Ethereum first generates a 256-bit private key, and then generates a 160-bit address on the basis of this private key. So in theory, it is possible for Ethereum to generate the same ...
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The security of private key with geth on the server-side

If you initiate a transaction in real time, you need to store the private key on the geth server to initiate the transaction. Once the geth server is hacked, the private key may be leaked. Is there ...
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My wallet has been compromised, how can I transfer all remaining funds to another wallet

Some scammers managed to get hold of my Private Key and trashed my wallet, using an automatic script. They didn't get hold of everything, because there was not enough Ethereum in it for paying gas ...
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242 views

Find the private keys to a derived ETH address from BIP39 mnemonic

I'm trying to find the private keys to a derived ETH address from a master BIP39 mnemonic / 12 word seed phrase. I can import the seed into MetaMask and can see/access the funds for the primary/master ...
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68 views

Private key or password for Account that is deployed on remix

I have deployed new contract on remix ethereum got Contract Adress as well as account address but now i want private key or password for my account address how to get that because while creating i ...
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1answer
133 views

What does it mean when “admin keys have been burnt”?

I've seen multiple times projects on Ethereum that have stated that their "admin keys have been burnt", thus ensuring security to all the users that the developer will not modify/update any ...
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Can't sweep from Paper wallet. Unsupported Format

I have an Ethereum paper wallet from 2 years ago. I am trying to sweep the paper wallet using Coinomi. The app states that the format of the private key is unsupported. The public key works properly ...
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1answer
585 views

Sweeping ETH from a 2 year old paper wallet, help?

I have a paper wallet from an ETH atm from 2 years ago. I am trying to sweep the funds onto a digital wallet. I have used multiple ETH wallet apps on my phone but none of them were able to recognize ...
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How to sync wallet files with different servers on private blockchain

We have a private blockchain setup with three instances on ubuntu 16.04. Each instance consists of 3 authorities to achieve availability in case of failure by redirecting to another instance. Folder ...
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how come i can generate keys using bip39 with only one words as seedphrase/mnemonic without any error?

Seed phrase/mnemonic is supposed to be 12 words or 24 words but I am able to generate keys with single word seed phrase using bip39 library without any error? what is happening here? how is this ...
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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 ...
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370 views

Is there a way to retrieve private key of ganache account with web3?

web3.eth.getAccounts() returns list of accounts. Is there a way around to get the private key of one of the account from the list returned from the above code?
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Attach to tessera node failing

Im installed quorum with tessera but when i need to attach to any node using command $ ./attach.sh 1 show error "Fatal: Unable to attach to remote geth: dial unix qdata/dd1/geth.ipc: connect: no ...
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How does MetaMask secure / store unlocked accounts?

I understand that MetaMask stores the encrypted vault somewhere like C:\Users\USER_NAME\AppData\Local\Google\Chrome\User Data\Default\Local Extension Settings\nkbihfbeogaeaoehlefnkodbefgpgknn ...
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196 views

Fundamental question! (HD Wallet private key hacked) [closed]

What is the probability of the mnemonic or privatekey of the HD wallet being hacked? It is being used as a wallet created by metamask. The user is using a wallet with a private key backed up by ...
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64 views

Need to access ether with my private key

I had a small amount of ether stored in a wallet i downloaded from the appstore (on android). Unfortunately my phone broke and now I cant find the same app on the store anymore. I tried finding the ...
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59 views

Generating a private key without a library

As far as I understand, a private key in the context of Ethereum is simply 256 random bits. The actual application of secp256k1 comes in when converting this to the public key, signing, etc. Based on ...
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1answer
211 views

Whats the best way to sign and send a transaction?

Hey I want to send a transaction that has a message embedded in it. I want the most secure way to unlock the personal account. I have full node GETH installed and am using web3.I have a nodejs script ...
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29 views

How to find private key on build.secondstate

I'm a beginner in ethereum application developing. Actually I started some days ago with a book and now I tried to build my first smart contract using BUIDL, actually at this site: https://buidl....
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How can I change the 12 word phrase in my trust wallet?

I created a ETH trust wallet on my phone for someone and he has now imported the trust wallet to his phone. Is there any way to change the 12 word phrase or somehow give the sole control to the ...
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3answers
315 views

How to generate a new Ethereum address and private key from a command line?

How one can securely generate a new raw private key from a UNIX command line? This private key can be then imported to wallet apps or web3.js.
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2answers
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Programmatically getting an Ethereum address for a raw hex private key

Let's assume one has a private key in a raw hexadecimal format: # Not a real key ddc64840388bc5f2bc9d40a29b35ae3c41a8cdf9ee1dfdc5a46414e3db3de2db How one would get the corresponding Ethereum account ...
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131 views

Fastest way to convert private to public key in C# .net?

For vanity reasons I am trying to find a private key whose public key has the same 4 characters in both the start and ending position, such as: 0xABCD_____________ABCD . I am finding that my computer ...
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1answer
40 views

How to sign transactions while Geth does not provide private key?

I've lunched Geth for the first time and created some accounts on it. While creating accounts, I entered a password for each, and a key file is generated which contains encrypted private key belonging ...
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59 views

Ethereum JSON keystore file leaked - security?

If the JSON keystore file has been leaked but the password has not, can the attacker with the keystore file do anything? Assume the password is 20 or more characters long and not used in any other ...
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2answers
211 views

HD paths on MyEthereumWallet

I hae some coins on MyEthereumWallet, that I can see in block explorer, but can not access it. I think that the mnemoic and password is correct. My assumption is that I messed up something with the HD ...
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48 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 ...
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1answer
180 views

Is it possible to transfer token from other address if I have private key from it?

I know that if someone owns tokens he can simply call transfer method of contract to send money. I also know that for ERC20 contract owner of tokens can call approve for my account, and then I can ...
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1answer
315 views

Help on recovering wallet through brute force or from extension data (Bounty on recovery)

I know 10 of 64 characters (hex) of my ethereum private key unencrypted and their positions. I also know the corresponding wallet address. Is a brute-force possible? What I am thinking of is ...
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1answer
483 views

Generating multiple deposite address for one account

I want to create something like a Crypto exchange, in which I need to generate different unique deposit addresses for each user, so they can send funds to their accounts while I can keep track of how ...
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96 views

Why HD wallet instance returns two xpub-xpriv key pairs inside Root and HDKey?

I have implemented address generation using HDWallet as shown in the snippet below: let Seed = generateMnemonic(); const wallet = EthHdWallet.fromMnemonic(Seed); console.log("Wallet" + JSON....
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1answer
2k views

How can I get a private key from a mnemonic phrase?

I want to convert a 24 words length seed phrase into a private key using web3.
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102 views

What is the privatekey to be used to sign web3.js transactions?

I created an account on metamask, and downloaded the json of my wallet. It's on rinkeby. The structure of the json is { "version":3," id":"...", "address":"....", "crypto": {...
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176 views

private key vs seed

I made an extra account in Metamask for my GF, I kept Account 1 for myself and I gave only the private key of Account 2 to my GF. I kept the seed words only to myself. Since then, she has dumped me ...
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53 views

CLI wallet where I can pass in a Private Key and send out ETH and then delete this key?

Is there a CLI command where I can pass in an ethereum private key and send some coins to another address? I'm trying to build out a reoccurring payment system where a user can send 1 eth to another ...
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1answer
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Is there a way to view the private key of test account in Remix (javascript VM)

Seeing how the keys are random and those "100 ethers" aren't real I can't think of why this is not obvious functionality, I'll need this for many reasons.

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