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Generate Ethereum Private Key

Php - Generate Ethereum Address From A Private Key - Stack Overflow

Php - Generate Ethereum Address From A Private Key - Stack Overflow

Generate Ethereum address from a private key I am trying to generate an Ethereum address based on a given private key following this " How are ethereum addresses generated? " and using this Keccak-256 Ethereum implementation. But it show this error: Warning: openssl_pkey_get_details() expects parameter 1 to be resource, boolean given in /localweb/getethaddress.php on line 15 // Format the private key as PEM $header_private_key = "-----BEGIN EC PRIVATE KEY-----\n"; $footer_private_key = "\n-----END EC PRIVATE KEY-----"; $eth_private_key = $header_private_key . "1a63b5c735d66d827f40f7d3a257da777cd7997d48bd5d319c36683c0ad3b1de" . $footer_private_key; // Load private key from a string $private_key = openssl_pkey_get_private($eth_private_key); var_dump($private_key); while ($msg = openssl_error_string()) echo "openssl_pkey_get_private " . $msg . "\n"; // Get the Public key $_public_key = openssl_pkey_get_details($private_key)['key']; $eth_public_key = openssl_pkey_get_public($_public_key); // hash the public key $hash_public_key = Keccak256\Keccak256::hash($eth_public_key, 256);; $eth_address = '0x' . substr($hash_public_key, -40); // compare the output echo 'Your generated address: ' . $eth_address . ''; echo 'Myetherwallet address: 0x47180b59dd8c81f46186900bbd29cbf675b3fbd9'; /* ad 40: 47180b59dd8c81f46186900bbd29cbf675b3fbd9 pk 64: 1a63b5c735d66d827f40f7d3a257da777cd7997d48bd5d319c36683c0ad3b1de */?> openssl_pkey_get_private error:0D07207B:asn1 encoding routines:ASN1_get_object:header too longopenssl_pkey_get_private error:0D068066:asn1 encoding routines:ASN1_CHECK_TLEN:bad object headeropenssl_pkey_get_private error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 erroropenssl_pkey_get_private error:10092010:elliptic curve routines:d2i_ECPrivateKey:EC libope Continue reading >>

Understanding Private Key, Public Key & Address In Ethereum Blockchain

Understanding Private Key, Public Key & Address In Ethereum Blockchain

Public key is described as follows in yellow paper . Where pu is the public key, assumed to be a byte array of size 64 (formed from the concatenation of two positive integers each < 2256) and pr is the private key, a byte array of size 32 (or a single positive integer in the aforementioned range). This is done using group operation of EC cryptography. To derive public key, private key is multiplied by G.Multiplication used to derive public is EC multiplication which is entirely different from normal multiplication for which I am going to use JS library . G is called generator point which is one of the domain parameters of EC cryptography. G has fixed value for ecp256k1, which is recommended by experts. you can read more here . var EC = require('elliptic').ec;var BN = require('bn.js');var ec = new EC('secp256k1');var G = ec.g; // Generator pointvar pk = new BN('1'); // private key as big numbervar pubPoint=G.mul(pk); // EC multiplication to determine public point var x = pubPoint.getX().toBuffer(); //32 bit x co-ordinate of public point var y = pubPoint.getY().toBuffer(); //32 bit y co-ordinate of public point var publicKey =Buffer.concat([x,y])console.log("pub key::"+publicKey.toString('hex')) Ethereum address is described as follows in yellow paper For a given private key, pr, the Ethereum address A(pr) (a 160-bit value) to which it corresponds is defined as the right most 160-bits of the Keccak hash of the corresponding ECDSA public key. To generate Ethereum address, take Keccak-256 hash of public key. Right most 20 bytes is your Ethereum address. var EC = require('elliptic').ec;var BN = require('bn.js');var ec = new EC('secp256k1');const keccak256 = require('js-sha3').keccak256;var privateKey=Buffer.alloc(32, 0);privateKey[31]=1;console.log("PK::"+privateKey.toStrin Continue reading >>

Digital Bitbox | Backup

Digital Bitbox | Backup

This page is not required to use your Digital Bitbox and is provided for instructional purposes. Learn how to recover from a backup or create your own wallet using the client-side JavaScript below. A standalone version of this page can be downloaded here or from Github and run offline. Electrum recovery key for a multisig wallet * To recover your Bitcoin wallet without a Digital Bitbox, enter the wallet backup text and password in the above boxes, click 'generate', and import the recovery key into the Electrum software wallet. * To recover Ethereum without a Digital Bitbox, enter the wallet backup text and password in the above boxes, click 'generate', and enter an Ethereum private key into MyEtherWallet. The order of private keys corresponds to the order of public addresses when 'viewing' a wallet in MyEtherWallet. * The backup is saved as a PDF file on the micro SD card for convenience. Plug the micro SD card into a trusted printer if you wish to also make a paper backup. * To load your own wallet into a Digital Bitbox, put the PDF file on the micro SD card inside a folder named 'digitalbitbox' in the root directory. Then, insert the SD card into the Digital Bitbox, and load your wallet using the desktop app. High quality randomness is crucial! Otherwise, a thief may be able to guess your key and take your coins. * A wallet is generated from the backup text and password using a modified BIP39 procedure. In particular, PBKDF2 strengthening is done twice (22,528 total rounds) for stronger protection. * Standard wallet addresses are generated following the BIP32 and BIP44 specifications. For a multi-signature wallet, the base BIP32 key path is m/100'/45'/0'. For Ethereum, the base BIP32 key path is m/44'/60'/0'/0. Continue reading >>

Why Do I Need A Public And Private Key On The Blockchain?

Why Do I Need A Public And Private Key On The Blockchain?

Why Do I Need a Public and Private Key on the Blockchain? When someone sends you cryptocoins over the Blockchain, they are actually sending them to a hashed version of whats known as the Public Key. There is another key which is hidden from them, that is known as the Private Key. This Private Key is used to derive the Public Key. You can know your own Private Key, and everyone else on the Blockchain knows their own Private Key, but the Private Key should not be shared with outsiders (that is, unless you want your cryptocurrencies to be stolen!). Both the Private Key and the Public Key are large integer numbers, but since these numbers are so large, they are usually represented using a separate Wallet Import Format (WIF) consisting of letters and numbers. The Private Key is the longer of the two, and is used to generate a signature for each blockchain transaction a user sends out. This signature is used to confirm that the transaction has come from the user, and also prevents the transaction from being altered by anyone once it has been issued. In short, you sign the cryptocurrencies you send to others using a Private Key. If someone were to obtain your private key, they would be able to send your cryptocurrencies to themselves, verifying that transaction with the Private Key in effect stealing from you! The Private Key is used to mathematically derive the Public Key, which (along with information about the network and a checksum)is then transformed with a hash function to produce the address that other people can see. You receive cryptocurrencies that others send to your address (which is a result of the hash of your public key and some additional information). At this point, you may be asking yourself, if a Public Key is derived from a Private Key, couldnt someone cre Continue reading >>

Web3.eth.accounts Web3.js 1.0.0 Documentation

Web3.eth.accounts Web3.js 1.0.0 Documentation

tx - Object: The transaction object as follows: nonce - String: (optional) The nonce to use when signing this transaction. Default will use web3.eth.getTransactionCount() . chainId - String: (optional) The chain id to use when signing this transaction. Default will use web3.eth.net.getId() . to - String: (optional) The recevier of the transaction, can be empty when deploying a contract. data - String: (optional) The call data of the transaction, can be empty for simple value transfers. value - String: (optional) The value of the transaction in wei. gas - String: The gas provided by the transaction. gasPrice - String: (optional) The gas price set by this transaction, if empty, it will use web3.eth.gasPrice() privateKey - String: The private key to sign with. callback - Function: (optional) Optional callback, returns an error object as first parameter and the result as second. Promise|Object returning Object: The signed data RLP encoded transaction, or if returnSignature is true the signature values as follows: messageHash - String: The hash of the given message. r - String: First 32 bytes of the signature s - String: Next 32 bytes of the signature rawTransaction - String: The RLP encoded transaction, ready to be send using web3.eth.sendSignedTransaction . 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 >>

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 >>

Walletgenerator.net - Universal Paper Wallet Generator For Bitcoin And Other Cryptocurrencies

Walletgenerator.net - Universal Paper Wallet Generator For Bitcoin And Other Cryptocurrencies

We try to make it that way ! The core of the tool, that generate the keys is 99% the same as the well reviewed bitaddress.org. We only changed it to be able to generate addresses for different crypto-currencies. We think that having a unique generator for multiple currencies lead to a much better reviewed tool for all than having a myriad of half-backed generators.Changes made to this generator are available on Github in small and divided commits and those are easy to review and reuse.Walletgenerator.net use the same security measures as the original project. All-in-one html document, no ajax, no analytics, no external calls, no CDN that can inject anything they want. And trust us, we have seen some nasty things when reviewing some wallet generator. Advantages of a paper wallet are multiple: They are not subject to malwares and keyloggers You dont rely on a third partys honesty or capacity to protect your coins You won't lose your coins when your device break Once you have generated and printed a wallet, you can send coins to the public address, like for any wallet. Store your paper wallet securely. It contains everything that is needed to spend your funds. Consider using BIP38 to secure your paper wallet with a password. How to spend the coins stored in a paper wallet ? You will need to import your private key in a real client, that you can download from the currency website. The exact method to do that will depend on the client. If there is no integrated method, you can usually fall back to the debug console and use the command importprivkey [yourprivatekey]. How walletgenerator.net is different than another wallet generator ? Its not that different. You will find another design for the paper wallet and some improvements here and there. The big difference is that thi Continue reading >>

A Beginners Guide To Setup A Wallet To Securely Store Your Ethereum And Ethereum Icotokens

A Beginners Guide To Setup A Wallet To Securely Store Your Ethereum And Ethereum Icotokens

Frontend Developer who loves coding, design, technology and startup. Working at Omise, the awesome online payment startup A Beginners Guide to Setup a Wallet to Securely Store Your Ethereum and Ethereum ICOTokens If you want your Ether safe, dont store all your Ether in an Exchange market. Keep some in your ownwallet I heard this from one of my co-workers when I just started investing in Ethereum. That really confused me Isnt the wallet in the Cryptocurrency exchange market my wallet too? Why isnt the exchange safe for me? So Im going to walk you through the mechanism of Ethereum wallet and a method to setup your own wallet to store coins that are secure and convenient. At least this will help you understand more to be able to take care your own coins properly. coins means any Ethereum currencies, Ether or Ethereum tokens. Ether means the native currency of Ethereum platform, sometimes we call it Ethereum or ETH. Ethereum tokens means any non-native currencies on the Ethereum network which normally comes from ICO , ex. Golem , Augur , OmiseGO . Ethereum network means the distributed network for processing the Ethereum transactions. Miners also are part of it. Ethereum wallet means an address or an account on Ethereum network that can be used to store or transfer the coins. To create a wallet, you will need to generate a private key to claim the address of the wallet on the Ethereum network. And 1 address can have only 1 private key. That means you CANNOT change or reset a password (private key). Also, if you lose your private key, you can say you lost your coins forever. And whoever gets your private key, they can use the private key to transfer the coins out of your wallet. Which Ethereum wallet client should Iuse? Exchange market is not the best choice. You have no f Continue reading >>

Create Full Ethereum Wallet, Keypair And Address

Create Full Ethereum Wallet, Keypair And Address

Create full Ethereum wallet, keypair and address Generating a usable Ethereum wallet and its corresponding keys This article is a guide on how to generate an ECDSA private key and derive its Ethereum address. Using OpenSSL and keccak-256sum from a terminal. You can find a working implementation of keccak-256sum here . Cool thing, it exists as a package in the Arch User Repository as well . If youre feeling lazy, you can find statically linked pre-compiled versions for both i386 and x86-64 on my repo . Warning SHA3 != keccak. Ethereum is using the keccak-256 algorithm and not the standard sha3. More info at Stackoverflow . I have a repository with complete scripts in both bash and python if youd like. First of all we use OpenSSL ecparam command to generate an elliptic curve private key. Ethereum standard is to use the secp256k1 curve. The same curve is used by Bitcoin. This command will print the private key in PEM format (using the wonderful ASN.1 key structure) on stdout. If you want more OpenSSL info on elliptic curves, please feel free to dig further . > openssl ecparam -name secp256k1 -genkey -noout-----BEGIN EC PRIVATE KEY-----MHQCAQEEIFDLYO9KuwsC4ej2UsdA4SYk7s3lb8aZuW+B8rjugrMmoAcGBSuBBAAKoUQDQgAEsNjwhFoLKLXGBxfpMv3ILhzg2FeySRlFhtjfi3s8YFZzJtmckVR3N/YLJLnUV7w3orZUyAz77k0ebug0ILd1lQ==-----END EC PRIVATE KEY----- On its own this command is not very useful for us, but if you pipe it with the ec command it will display both private and public part in hexadecimal format, and this is what we want! Lets do it: > openssl ecparam -name secp256k1 -genkey -noout | openssl ec -text -nooutread EC keyPrivate-Key: (256 bit)priv: 20:80:65:a2:47:ed:be:5d:f4:d8:6f:bd:c0:17:13: 03:f2:3a:76:96:1b:e9:f6:01:38:50:dd:2b:dc:75: 9b:bbpub: 04:83:6b:35:a0:26:74:3e:82:3a:90:a0:ee:3b:91: bf: Continue reading >>

Accessing Your Ether Wallets Private Keys On Blockchain.info

Accessing Your Ether Wallets Private Keys On Blockchain.info

Accessing your Ether wallets Private Keys on Blockchain.info Currently, many companies support creation and use of Ether wallets. Its possible to send and receive ETH easily, without being need to download the whole Blockchain for the task. However, many of these wallets havent added support for ERC-20 tokens. These tokens are used often as a trading value in many ICOs, and also given to the users as payment for their contribution. With Chronologics ICO it wasnt different. There are steps to be taken to visualize and use these tokens for some wallets. Now, lets talk about the wallets that really allow users full control over their address. Among them we have Jaxx, MyEtherWallet, Blockchain.info, and others. If youve made your contribution from any of these rest assured that with a few simple steps you can manage and even transfer your DAY tokens. However, if youve sent your contribution from Coinbase, Bittrex, Poloniex, FreeWallet, BTC Markets or Kraken, among others, then you have a problem. In order to check the DAY tokens inside your ETH address, you dont need to unblock/open your wallet, rather only type your wallets address on EtherScan.io or Ethplorer.io. Now, if you really want to move your DAY tokens, or any other ERC-20 asset from those wallets, then youll have to access it using the Private Key, JSON file and password, etc. Today well feature a quick tutorial on how to recover your Private Key from an Ether wallet hosted by Blockchain.info. Step #1: Login into your Blockchain.info account. Step #2: Click on Ether (left side of your screen). Step #3: Select the option Export Private Key, as demonstrated below. Step #4: This warning mentions the implied risks of exposing your Private Key. Basically, never let anyone else see it and always double-check the websi Continue reading >>

Lets Enhance! How We Found @rogerkvers $1,000 Wallet Obfuscated Privatekey

Lets Enhance! How We Found @rogerkvers $1,000 Wallet Obfuscated Privatekey

Lets Enhance! How we found @rogerkvers $1,000 wallet obfuscated privatekey Part of the documentary where Roger Ver gives the details of the Bitcoin wallet. Before we even start: We do not know the journalists who recorded the interview and we do not know Roger Ver. Anyone who had access to this video could have retrieved the private key. We could have simply named this post How great QR code are and how we recovered one from almost nothing. But its much more interesting when the QR code is the key to a $1000 Bitcoin Cash wallet. Bitcoin, Ethereum, Litecoin, Dash, Neo Cryptocurrencies are all over and are moving fast. I have been following Bitcoin since 2013 (following doesnt mean buying), had to read Mastering Bitcoin 3 times to understand how each part of it really works and be able to explain it to someone else. Still, I cant keep up with the market, new cryptocurrencies, new forks, new ICOs everywhere, every day. Its easy to start using cryptocurrencies by following a tutorial online. Download a random wallet app, generate a random pair of keys and buy some crypto on a random exchange but the cryptocurrencies learning curve is difficult. If you dont fully understand how all parts of this work you should avoid cryptocurrencies. If you dont, you risk losing your money by falling in one of the many pitfalls. One of them, keeping your private key secure, is the subject of this post. The first rule of Crypto Club is: You do not share your privatekey. The most precious thing you have when you own cryptocurrencies is your private key. If you lose your private key, you lose your money. If someone gets access to your private key, you lose your money. Simple. With this real-world example will show you step by step how we recovered the private key of the $1000 Bitcoin wallet c Continue reading >>

Myetherwallet.com

Myetherwallet.com

Ledger / TREZOR / Digital Bitbox : Use your hardware wallet . Your device * is * your wallet. MetaMask Connect via your MetaMask Extension . So easy! Keys stay in MetaMask, not on a phishing site! Try it today. Jaxx / imToken Use your Mnemonic Phrase to access your account. Mist / Geth / Parity: Use your Keystore File (UTC / JSON) to access your account. **Do not lose it!** It cannot be recovered if you lose it. **Do not share it!** Your funds will be stolen if you use this file on a malicious/phishing site. **Make a backup!** Secure it like the millions of dollars it may one day be worth. **If you do not reveal your bid, you will not be refunded.** You will unlock your account, enter the Bid Amount, and the Secret Phrase. In the event that two parties bid exactly the same amount, the first bid revealed will win. Once the auction has ended (after 5 days / 120 hours), the winner needs to finalize the auction in order to claim their new name. The winner will be refunded the difference between their bid and the next-highest bid. If you are the only bidder, you will refunded all but 0.01 ETH. The auction for this registrar is a blind auction, and is described in EIP162 . Basically, no one can see *anything* during the auction. Be safe & secure: We highly recommend that you read our guide on How to Prevent Loss & Theft for some recommendations on how to be proactive about your security. Always backup your keys: MyEtherWallet.com & MyEtherWallet CX are not "web wallets". You do not create an account or give us your funds to hold onto. No data leaves your computer / your browser. We make it easy for you to create, save, and access your information and interact with the blockchain. We are not responsible for any loss: Ethereum, MyEtherWallet.com & MyEtherWallet CX, and some of Continue reading >>

Wallets - Is There A Simple Ethereum Address Generator That Consists Only Of Private Key And Public Key? - Ethereum Stack Exchange

Wallets - Is There A Simple Ethereum Address Generator That Consists Only Of Private Key And Public Key? - Ethereum Stack Exchange

Is there a simple Ethereum address generator that consists only of private key and public key? I can go to , download their software to my system, disconnect my system from the Internet, then move my mouse over their page randomly to generate entropy and then get a single Bitcoin wallet. The single wallet address is really simple that I can carry with me in any form (print it to a paper, copy it to a file on any device and secure it the way I wish, etc.) Does something equally simple exist for Ethereum? I tried but I think it enforces added complexity on me to secure the private key. For example, first it forces me to pick a password that it would use to secure the private key. Then the resulting wallet looks complex like the following: { "version": 3, "id": "54f...", "address": "46d...", "Crypto": { "ciphertext": "9c3...", "cipherparams": { "iv": "ac6..." }, "cipher": "aes-128-ctr", "kdf": "scrypt", "kdfparams": { "dklen": 32, "salt": "9c8...", "n": 1024, "r": 8, "p": 1 }, "mac": "559..." }} (Note: I have used ... to truncate long strings. Also don't worry, I won't use this wallet anywhere.) Along with saving this JSON file in exactly this format, I also need to remember an additional password. So back to my question: Is there any Ethereum address generator that can just give me a private key and a public key that I can secure however I wish? Continue reading >>

Ether Paper Wallet Tutorial - Step By Step Instructions

Ether Paper Wallet Tutorial - Step By Step Instructions

You should create an Ether Paper Wallet, before you start buying or mining Ether. An Ether Paper Wallet is just like an ordinary wallet which is printed on paper. It might sound weird at first, however, it is the safest method to store your Ether. The fact that, your Ether can be stored at your house, at the bank in a locker box or in a cookie box buried behind your house, is an important advantage of the Paper Wallets, if compared to an Online Wallet. The Paper Wallet is not part of the Internet. No hacker can gain access to your precious Ether. Unless, he would find your cookie box behind your house. A disadvantage of the Paper Wallet is the fact that, the availability of the Ether is belayed as the Ether has to be transferred back to the Online Wallet before it can be used. The use of the Ether Wallets always depends on what you want to use them for. If you want to trade your Ether at the stock market and benefit from price fluctuation, the Ether has to be ready to use in your Online Wallet in order to act quickly. If you want to go with a long-term rise in the market instead, you can keep your Ether safely in your Paper Wallet until you need them and then transfer them online. By the way, Paper Wallets are an excellent extraordinary present. Just put enought Ether in them. We use MyEtherWallet , a client-based Open-Source JavaScript-Application. This is a web page where you can check the way this service works and therefore increase the safety. In the following, we will show you the main functions: How much Ether is available on my Ether Wallet? 2. Choose a password for the encryption of the JSON file: Enter a safe password in the field. We recommend a combination of at least 15 characters of capital and lower case letters, special characters and numbers. Take a no Continue reading >>

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