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Ethereum Keystore File

How Do I Backup My Ether Accounts?

How Do I Backup My Ether Accounts?

I want to backup my accounts onto a USB or other external device for safe-keeping. How can I do that? To backup your wallet you will need to make a copy of the key file(s) located in your ethereum directory. The file should look something like this: UTC--2015-09-18T14-07-57.023663538Z--da78c8721e4ede42cf488304551eb596dd5f93e23 I've suggested just saving the keystore contents, but you can of course backup the entire /ethereum directory; note, however, that this includes the chaindata files, and that's over 2Gb at the moment. To import saved wallet files, simply copy them into the keystore directory of your system. Presale versions will end in the *.json extension, but they will be recognized by the ethereum client. Don't forget that the keystore files are still protected by a password. linagee Jan 20 '16 at 20:30 To clarify, is it is the combination of your key file, and your knowledge of your password that constitutes your wallet. I just want to be absolutely certain before transferring Ether off exchange. That is to say with my key file and password, I could install Geth on a new computer, transfer my key file on a USB stick, and have access to my 'account'/Ether? Thomas Clowes Feb 3 '16 at 17:40 Yes for each key file, you need the password for it. Before deleting any key files, one should test the recovery process using small amounts of Ether. eth Feb 5 '16 at 23:42 So the only thing I need to save for a full backup of my wallets are the files in ~/.ethereum/keystore - is that correct? Paul Preibisch Apr 1 '16 at 3:15 Continue reading >>

Keythereum

Keythereum

Keythereum is a JavaScript tool to generate, import and export Ethereum keys. This provides a simple way to use the same account locally and in web wallets. It can be used for verifiable cold storage wallets. Keythereum uses the same key derivation functions (PBKDF2-SHA256 or scrypt), symmetric ciphers (AES-128-CTR or AES-128-CBC), and message authentication codes as geth . You can export your generated key to file, copy it to your data directory's keystore, and immediately start using it in your local Ethereum client. Note: starting in version 0.5.0, keythereum's encrypt and decrypt functions both return Buffers instead of strings. This is a breaking change for anyone using these functions directly! To use keythereum in Node.js, just require it: A minified, browserified file dist/keythereum.min.js is included for use in the browser. Including this file simply attaches the keythereum object to window: Generate a new random private key (256 bit), as well as the salt (256 bit) used by the key derivation function, and the initialization vector (128 bit) used to AES-128-CTR encrypt the key. create is asynchronous if it is passed a callback function, and synchronous otherwise. //optionalprivatekeyandinitializationvectorsizesinbytes //(ifparamsisnotpassedtocreate,keythereum.constantsisusedbydefault) varparams={keyBytes:32,ivBytes:16}; You will need to specify a password and (optionally) a key derivation function. If unspecified, PBKDF2-SHA256 will be used to derive the AES secret key. varkdf="pbkdf2";//or"scrypt"tousethescryptkdf The dump function is used to export key info to keystore "secret-storage" format . If a callback function is supplied as the sixth parameter to dump, it will run asynchronously: //Note:ifoptionsisunspecified,thevaluesinkeythereum.constantsareused. v Continue reading >>

Keystore - Nethereum

Keystore - Nethereum

The library Nethereum.KeyStore allows the decrytion and the encryption of private keys which using the Web3 Secret Storage Definition .This is the same standard followed by node clients like geth, eth or parity. To retrieve a key from a file stored using the web3 secret storage definition you will need to do the following: var file = File.OpenText("UTC--2015-11-25T05-05-03.116905600Z--12890d2cce102216644c59dae5baed380d84830c");var json = file.ReadToEnd(); First open the file and extract the json content, key store files can normally be found on the directory "keystore" on the following directories: If using parity the keys can be found under the directory "keys" on $HOME/.parity/keys To decrypt and extract the private key from the json file we can just use the KeyStoreService with a password. var password = "password";//using the simple key store servicevar service = new KeyStoreService();//decrypt the private keyvar key = service.DecryptKeyStoreFromJson(password, json); First we will need to create the standard file name, which includes the UTC time and account address. Then we will use the password to encrypt and store the private key into a JSON formatted output, which will be saved into the file. var fileName = service.GenerateUTCFileName(address);using (var newfile = File.CreateText(fileName)){ //generate the encrypted and key store content as json. (The default uses pbkdf2) var newJson = service.EncryptAndGenerateDefaultKeyStoreAsJson(password, key, address); newfile.Write(newJson); newfile.Flush();} Continue reading >>

How To Set Up And Use Myetherwallet With Ethereum

How To Set Up And Use Myetherwallet With Ethereum

With Ethereum (ETH) being the second largest cryptocurrency, its no wonder that such a myriad of different wallet services have flooded the market. Among the most popular of these wallet services is MyEtherWallet. MyEtherWallet is an incredibly lightweight, fast, easy to use wallet for Ethereum. You can access MyEtherWallets services through: The reason why MyEtherWallet supports a large amount of access methods is because it merely acts as an interface to the Ethereum blockchain. All of these methods simply pass along the required information needed to verify you to MyEtherWallet, which in turn provides you with a clean, user-friendly connection to the blockchain. This makes MyEtherWallet as easy and fun to use as a web wallet, but as secure as Ethereums Mist browser. This is because youre storing your private keys locally (on your own device) instead of on a potentially vulnerable, centralized web server. Of course, via the methods above, you can choose to provide your public key via a wallet service you may already be using or create a new private key, JSON file, and/or mnemonic phrase. Its important to emphasize the fact that MyEtherWallet is not a bank. It doesnt store your private keys, JSON files, mnemonic phrases, etc. for you. If you lose these methods of access/recovery, youre out of luck. Remember to store your private, critical information in a safe and secure area. In this guide, we will be covering how to create and set up a wallet through MyEtherWallet, as well as how to access this newly created wallet using a private key and keystore file. How to create an Ethereum wallet with MyEtherWallet The simplest and most straightforward way to set up and use MyEtherWallet with Ethereum is to head over to MyEtherWallets website and create your own wallet. Naviga Continue reading >>

How To Use Myetherwallet

How To Use Myetherwallet

Running a full node is an important part of any cryptocurrency's ecosystem, as it helps keep the system decentralized and secure. But as a user, not everyone has the resources to broadcast and store the blockchain in their computer, which is strictly required when running the Ethereum Browser, Mist or any other full node walletsolutions. Mist can beused as a simple wallet to send and receive payments, but it requires users to run a full node and it takes a while to sync. If you want to create a new wallet without having to download the blockchain or simply haven't done so in a long time and don't wish to download a big part of it, you can simply use the web based application, MyEtherWallet . My Ether Wallet is not a standardWeb Wallet. It does not allow you to create an account and to store your Ether on their servers, they simply allow you create a wallet, which is yours to store and keep safe, and to broadcast your transactions on the blockchain through their full node. In this guidewe'll show you how to create a new wallet, back it up and how to send a transaction, both online and offline. Step 1: If you have used mist before, you have created a wallet and have the private key for that wallet stored onyour computer, find your keystore and you can skip to part 2. If you need to create a new wallet, you can use MyEtherWallet to do so. Simply visit MyEtherWallet , enter a strong password and generate a wallet. Step 2: Store your Private Key. You have 3 ways of doing this. You can download .JSON file with an encrypted version of the private key which is compatible with geth, mist and myetherwallet and requires a password to decrypt (Keystore). You can also store unencrypted version of your private key by downloading it in a .JSON file or by copy pasting it from the webs Continue reading >>

Wallet Keystore File

Wallet Keystore File

MyEtherWallet you can make paper copy but I already have an ethereum wallet I just want to move it to a new computer cant I somehow just drag the utc file into my new ethereum wallet? I found it on my mac but there is no keystore file I guess because I havent set up an account yet. But I dont want to set up an new account with a new password I just want to use my old keystore file with my old password. Continue reading >>

Account Management Ethereum Homestead 0.1 Documentation

Account Management Ethereum Homestead 0.1 Documentation

Remember to use a strong and randomly generated password. We just created our first account. If we try to list our accounts again we can see our new account: > eth.accounts["0xb2f69ddf70297958e582a0cc98bce43294f1007d"] For the command line averse, there is now a GUI-based option for creating accounts: The official Mist Ethereum wallet. The Mist Ethereum wallet, and its parent Mist project, are being developed under the auspices of the Ethereum Foundation, hence the official status. Versions of the wallet app are available for Linux, Mac OS X, and Windows. The Mist wallet is beta software. Please beware and use it at your own risk. Creating an account using the GUI Mist Ethereum wallet couldnt be easier. In fact, your first account is created during the installation of the app. Download the latest version of the wallet app for your operating system. Opening the Wallet App will kick off syncing a full copy of the Ethereum blockchain on your computer, since you will in effect be running a full geth node. Unzip the downloaded folder and run the Ethereum-Wallet executable file. Wait for the blockchain to fully sync, then follow the instructions on the screen and your first account will be created. When you launch the Mist Ethereum wallet for the first time, you will see the account you created during the installation process. By default it will be named MAIN ACCOUNT (ETHERBASE). Creating additional accounts is easy; just click on ADD ACCOUNT in the apps main screen and enter the required password. The Mist wallet is still in active development, so details of the steps outlined above may change with upgrades. Creating a Multi-Signature Wallet in Mist The Mist Ethereum wallet has an option to secure your wallet balance with a multisig wallet. The advantage of using a multisig Continue reading >>

Accounts, Addresses, Public And Private Keys, And Tokens

Accounts, Addresses, Public And Private Keys, And Tokens

Accounts, Addresses, Public And Private Keys, And Tokens The format of your private key is 3a1076bf45ab87712ad64ccb3b10217737f7faacbf2872e88fdd9a537d8fe266. The format of your account (which is generated from your public key) is 0xC2D7CF95645D33006175B78989035C7c9061d3F9. Note that there is a lowercase version 0xc2d7cf95645d33006175b78989035c7c9061d3f9 and a partially uppercase version 0xC2D7CF95645D33006175B78989035C7c9061d3F9. The partially uppercase version has a checksum to verify the address. See EIP55 - Yet another cool checksum address encoding The password encrypted private key is stored in a JSON file with the following format (newlines and indents added for clarity, example on OS/X): $ more ~/Library/Ethereum/keystore/UTC--2017-03-18T05-48-53.504714737Z--c2d7cf95645d33006175b78989035c7c9061d3f9 {"address":"c2d7cf95645d33006175b78989035c7c9061d3f9", "crypto":{ "cipher":"aes-128-ctr", "ciphertext":"0f6d343b2a34fe571639235fc16250823c6fe3bc30525d98c41dfdf21a97aedb", "cipherparams":{ "iv":"cabce7fb34e4881870a2419b93f6c796" }, "kdf":"scrypt", "kdfparams"{ "dklen":32, "n":262144, "p":1, "r":8, "salt":"1af9c4a44cf45fe6fb03dcc126fa56cb0f9e81463683dd6493fb4dc76edddd51" }, "mac":"5cf4012fffd1fbe41b122386122350c3825a709619224961a16e908c2a366aa6" }, "id":"eddd71dd-7ad6-4cd3-bc1a-11022f7db76c", "version":3} How To Create New Accounts (or Addresses) How To Create A New Account In Go Ethereum (geth) You can generate a new Ethereum account by executing geth account new if you already have the geth Ethereum node software installed: $ geth account newYour new account is locked with a password. Please give a password. Do not forget this password.Passphrase: xxxxxxxxRepeat passphrase: xxxxxxxxAddress: {4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319} A UTC--{year}-{month}--{account} enc Continue reading >>

Backup & Restore Ethereum/go-ethereum Wiki Github

Backup & Restore Ethereum/go-ethereum Wiki Github

DO NOT FORGET YOUR PASSWORD and BACKUP YOUR KEYSTORE Everything geth persists gets written inside its data directory (except for the PoW Ethash DAG, see note below).The default data directory locations are platform specific: Accounts are stored in the keystore subdirectory. The contents of this directories should be transportable between nodes, platforms, implementations (C++, Go, Python). To configure the location of the data directory, the --datadir parameter can be specified. See CLI Options for more details. Note: The Ethash DAG is stored at ~/.ethash (Mac/Linux) or %APPDATA%\Ethash (Windows) so that it can be reused by all clients. You can store this in a different location by using a symbolic link. Sometimes the internal database formats need updating (for example, when upgrade from before 0.9.20). This can be run with the following command (geth should not be otherwise running): Geth's blockchain and state databases can be removed with: This is useful for deleting an old chain and sync'ing to a new one. It only affects data directories that can be re-created on synchronisation and does not touch the keystore. Export the blockchain in binary format with: Or if you want to back up portions of the chain over time, a first and last block can be specified. For example, to back up the first epoch: Note that when backing up a partial chain, the file will be appended rather than truncated. Import binary-format blockchain exports with: See for more info And finally: DO NOT FORGET YOUR PASSWORD and BACKUP YOUR KEYSTORE Continue reading >>

How Can I Create A Keystore File With My Private Key? : Ethereum

How Can I Create A Keystore File With My Private Key? : Ethereum

So I have my private key from my paper wallet. I have recently installed the Mist Wallet and I now want to get my paper wallet into my Mist Wallet, although I don't have the wallet files anymore. I only have the private key. How do I get my private key into the Mist Wallet? How can I recreate the wallet files? I found this: But I'm to technically stupid to get it working. If I start geth it downloads the whole blockchain eventhough I already have it downloaded at another location on my harddrive. Can somebody please explain to me in plain english what I have to do? Is there a secure tool for that, that could help me here? If we want to get major adoption for cryptocurrencies, we need to get them easy to use. Not everybody is a programmer. I really appreciate all the help! Thank you in advance. Continue reading >>

Ethereum Wallet Cracking

Ethereum Wallet Cracking

hashcat v3.6.0 was released yesterday and one of the newly supported hashes was Ethereum wallets ( Go Ethereum (Geth) , Mist and MyEtherWallet variants). This guide will show how a MyEtherWallet JSON keystore file is broken down, how its mapped to a hashcat compatible format, and finally an example crack. First lets get our wallet. Thats as easy as going to MyEtherWallet , entering a password, clicking generate and downloading it. MyEtherWallet suggests you enter a strong password (at least 9 characters). Firstly this isnt a suggestion it wont let you generate your wallet unless your its at least 9 characters. Secondly, I wouldnt say 9 characters is particularly strong, but thats an argument for another day. If you dont set a wallet name, a default is provided (as ours is) which comprises of the UTC time/date generated, followed by your new Ethereum wallet address. Our wallets password is [email protected]1!and the generated keystore file can be found below which is coloured to show how its mapped to the hashcat compatible format. UTC2017-06-10T11-51-33.675Zf418f8185f2c1163ae953bf778acc6877b9bc203 kdfparams:{dklen:32,salt:437964c9bd1b5f63bde56560808c894792f8f670694590b776e22381e32dd mac:96f2a849321cc04cb6c0fcee1bd4b195ca681ca28064dc45000f02e47230c5b6}} $ethereum$s*1024*8*1*437964c9bd1b5f63bde56560808c894792f8f670694590b776e22381 e32dd33b*7f5c865554d67604394ae54d7a4f9735bdb85c90e606a672d18add1d167d793b*96f So from the above we can derive the following hashcat structure EDIT (17/07/17): Despite documentation showing the above structure due to transitions between ethereum2john versions, hashcat will accept both$ethereum$s*n*r*p*salt*ciphertext*mac(as shown in this example) and $ethereum$s*n*r*p*salt*mac*ciphertext formats. where s references scrypt variant in this instance. The le Continue reading >>

How Can I Access My Keystore File? : Ethereum

How Can I Access My Keystore File? : Ethereum

Geth stops syncing, Parity won't let me send funds due to 'not being able to work out gas limit' All I want to do is access my funds. I've lost count of how many times Ive tried to sync the chain from scratch. I hope the latest updates work, so I delete chain data, download latest version start syncing, then it stops. Anyone else feeling like they are going insane?? Continue reading >>

Securely Generating And Storing An Ethereumwallet

Securely Generating And Storing An Ethereumwallet

Securely Generating and Storing an EthereumWallet With the rise of Ethereum and Initial Coin Offerings (ICOs), especially ERC20 tokens , people unfamiliar with Ethereum or other cryptocurrencies like BitCoin are becoming interested in the technology. Unfortunately, getting started with Ethereum and participating in ICOs is not simple. The central component in Ethereum is the wallet. An Ethereum wallet is what holds your Ether and other Ethereum-based tokens, and conceptually can be thought of like a real wallet. Like a real wallet, an Ethereum wallet can be stolen. You shouldnt leave it out, or stored on a device that is often connected to the internet, or it risks being hacked. There is no recovery for a stolen wallet the courts cannot help you recover it, and you cant reverse what happens. This guide will explain how to safely generate and store an Ethereum wallet. MyEtherWallet is an open source project to make it simple to create an Ethereum wallet and interact with the Ethereum platform. It is hosted at myetherwallet.com , but its just a static web page. The safe, recommended way of using MyEtherWallet is to download the website yourself, so that there is no risk you go to the wrong website. This also allows you to use MyEtherWallet without being connected to the internet. You can download the latest version of the MyEtherWallet website as a zip file at this link . Download the etherwallet-v, not the chrome extension. When you unzip the file, you get a list of files containing a website. Unzipped MyEtherWallet. Double click index.html to openit. Open index.html to launch MyEtherWallet. Through the magic of mathematics, you can easily create a password-protected Ethereum wallet that no one will ever be able to duplicate accidentally. There are many more available E Continue reading >>

Guide To Cryptocurrency Wallets: Opening A Myetherwallet (mew)

Guide To Cryptocurrency Wallets: Opening A Myetherwallet (mew)

Guide to Cryptocurrency Wallets: Opening a MyEtherWallet (MEW) We simplify complexities By Aziz, Founder of Master the Crypto No responses This guide will cover in great detail on the process of opening aMyEtherWallet (MEW) Wallet. This is an extension of our previous Guide to Cryptocurrency Wallets: Why Do You Need Wallets? Keeping your Coins in an exchange can present a real risk of you losing them all. Why? Simply because you do not technically own the coins youve bought in an exchange . Exchanges work like a bank; it is a third-party service provider that you trust to keep your coins safe. However, there is always a probability of the exchange shutting down or being hacked, resulting in a loss of coins (case in point: Mount Gox exchange). Given the lack of regulatory frameworks on exchanges and cryptocurrencies as a whole as well as the infancy of the industry, the best way to keep your coins safe is to have total control of your coins . Having real and true ownership of your Coins means that you control your own private keys. And the only way you can control and manage your private keys is through owning your own wallet. Since many ICOs these days are in the form of ERC-20 tokens, the main base currency for participating in an ICO is through Ethereum (ETH) coins. (See also: Coins, Tokens & Altcoins: Whats the Difference?) In order to participate in an ICO, you have to open an Ethereum-compatible wallet. The most common Ethereum wallet is MyEtherWallet . It is simple to set up and provides the security benefits of coin ownership. This guide will explain the steps needed for you to open your own MEW wallet. Before we move on, its important to understand key terms associated with a wallet. (Read also: Beginners Guide to ICO Investing: How to Participate in ICOs ) Mak Continue reading >>

Differences Between Wallet Types (e.g. Private Key Vs Keystore)

Differences Between Wallet Types (e.g. Private Key Vs Keystore)

This is encrypted by the password you chose. This Keystore file matches the format used by Mist so you can easily import it in the future. Typically these come in 12-word or 24-words. They can derive multiple addreses - meaning your phrase actually is able to create multiple accounts, addresses, and private keys. Ledger, TREZOR, MetaMask, and Jaxx create these for you. MyEtherWallet does not currently derive mnemonic phrases, but may in the future. This is the unencrypted text version of your private key, meaning no password is necessary. If someone were to find your unencrypted private key, they could access your wallet without a password. For this reason, encrypted versions are typically recommended. However, you should print the paper wallet or save this in an offline environment (like a piece of paper or USB drive). This ensures a lost password does not result in lost ETH, and acts as another backup. This is the unencrypted, JSON format of your private key. It gives you a file, just in case you prefer a file over a string of characters This means you do not need the password but anyone who finds your JSON can access your wallet & Ether without the password. Continue reading >>

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