Use parse256 (IL) as master secret key, and IR as master chain code.
Type the command 6.1.register_account The account name you want to create, the account public key, the account public key, the master account name you want to create the account number true6.2.import_key the account name you want to create, the master account private key you want to create.
Master public key: xpub661MyMwAqRbcEify GEzokif A4GioKbV2d7q837G5ZWohxS9ZD6gmhDiy1B9G7Sko Johjrx8fVVegrCjx1oypCxxSe6Uj5u4gciB72mQPokY.
After installation, open Electrum, and create a new wallet, Follow the steps from Figure 4 to Figure 8 to generate a new cold wallet address, electrum by default is to create 5 new addresses at a time, note Figure 8, type "listaddressese()" command on the command line, the system will list the newly created 5 Bitcoin addresses, then use the getbukeys command, or get the public key from the menu master key public (the public key and address are not the same concept Oh), please copy this public key down, and save it in a text file. Figure 9 is the private key showing these 5 new addresses, put here just to explain to you, used to compare with Figure 12, 5 private keys are in this never touch the net linux operating system wallet, we do not actually do Figure 9 this step. And don't tell anyone else your private key.
MSK s x, system master public key MPK s v.
Hackers launched a denial-of-service (DoS) attack on a well-known wallet Electrum server, according to Johnwick.io. Hackers used botnets of more than 140,000 computers to attack Electrum nodes and simultaneously deployed malicious nodes. When a user connects to these malicious nodes and sends a transaction using an older version of Electrum, the user is prompted to update the Backdoor Client. If the user installs the client as prompted, the private key is stolen and all digital assets are lost. Millions of dollars of digital currency have been stolen, according to Electrum officials. De-dimensional Security Labs recommends that users of electrum wallets be updated to the latest version of the client through the official website and never use the link in the prompt message.
Like Bitcoin's core wallet, Electrum Wallet allows users to control their own funds and private keys. Electrum wallets' private keys can also be exported and used on other supported wallets to access funds. Electrum apps are available for Windows, Linux, OSX and Android, but do not support iOS and browser clients.
As mentioned earlier, the importance of the master key means that the identifier is validated by a message signed by the child key of the identifier, not by a message signed by the master key. However, because these messages are usually associated with the identifier itself, they are actually signed by the master key (because the master key is directly associated with the identifier). Therefore, the master key can still be used to sign and propagation messages that revoke one or more historical sub-keys.
electrum master public key
The first is to generate master key and master chain code from the root seed
The Electrum development team also warned them that they had nothing to do with a project called Electrum Dark: they used our name without our permission. Be careful with the altcoin version of Electrum, as they are sometimes used as vectors to install malware against your real Bitcoin wallet.
Electron Cash is only a version of Electrum, so if you're used to Electrum, you won't have any problems.
The combination of master key and chain code is called extended key, and with the extended private key, the child private key can be derived, and the extended public key can be derived from the child public key. Having an extended public key allows you to derive a child public key, which is more secure and convenient if the server does not require a parent-private key. But there is also the problem that the extended public key contains chain codes that can be used to derive all other sub-private keys if they are known or leaked. Simply leaking the private key as well as a master chain code can expose all child keys. To make matters worse, the child private key and the parent chain code can be used to infer the parent and private key.
Electrum is a world-renowned Bitcoin light wallet with a long history of multi-signature support and a very broad user base, many of which like to use Electrum as a cold wallet or multi-signature wallet for Bitcoin or even USDT (Omni). Based on this usage scenario, Electrum is used less frequently on the user's computer. The current version of Electrum is 3.3.8, and previous versions of 3.3.4 are known to have a message flaw that allows an attacker to send update prompts through a malicious ElectrumX server. This update prompt is very confusing for the user, and if you follow the prompt to download the so-called new version of Electrum, you may be tricked. According to user feedback, because of this attack, stolen bitcoins are in the four digits or more. This captured currency theft attack is not stealing the private key (electrum's private key is generally stored with two-factor encryption), but replaces the transfer destination address when the user initiates the transfer. In this slow fog remind users, transfer, need to pay special attention to whether the destination address is replaced, which is a very popular recent way to steal money. It is also recommended that users use hardware wallets such as Ledger, and if you pair it with Electrum, although the private key does not have any security issues, you should also be alert to the replacement of the destination address.
Owner Key: The master key has all permissions and can be used to modify all keys. Just registered account to give you the master key. This key is everything to your account, when this key is lost, your account can hardly be retrieved, so please carefully save your master key.
Hackers have launched a denial-of-service (DoS) attack on a well-known wallet Electrum server, according to Johnwick.io. Hackers used a botnet of more than 140,000 computers to attack Electrum's nodes and simultaneously deployed malicious nodes. When a user connects to these malicious nodes and sends a transaction using an older version of Electrum, the user is prompted to update the Backdoor Client. If the user installs the client as prompted, the private key is stolen and all digital assets are lost. Millions of dollars of digital currency have been stolen, according to Electrum officials. Devi Security Labs recommends that users of Electrum Wallet update to the latest version of the client via the official website and never use the link in the prompt message.
Malicious wallet software: A wallet software that sends a private key to a central server to steal the victim's coins. "Electrum Pro" is a notorious example, however.
Blockchain.info, Electrum Wallet.
We know that in a general password system, the private key is randomly generated, and the public key is generated by the private key. In identity-based encryption, the user's private key is required to be generated if the user's public key (mailbox, etc.) is determined. To address this seemingly impossible requirement, identity-based encryption introduces a trusted third party, or institution called a key generation center, that owns a master key of the system that derives the private key corresponding to the public key (mailbox, etc.) based on the master key and the user's public key (mailbox, etc.) and distributes the private key to the user.
Electrum is a popular software wallet that works by connecting to a dedicated server. These servers receive a hash of the Bitcoin address in the wallet and reply with transaction information. Electrum Wallet is fast and has few resources, but by default, it connects to these servers and can easily monitor users. In addition to Electrum, some other software uses public Electrum servers. By 2019, it is a faster and better alternative to BIP37.
WiFi master key
Bitcoin Wallet Electrum confirms a phishing attack against its users, reminding them not to download Electrum Wallet software from any channel other than the official website. Earlier media reports said Electrum users had maliciously stolen millions of dollars worth of cryptocurrencies. Hackers create Electrum wallet software with malicious code, induce users to download, and trick users into providing login information such as passwords to commit theft.