* update account management page
* add links
* add ws to security note
previously only mentioned that account unlocking is forbidden when `http` enabled. Now mentions same is true for `ws`
* remove whitespace from code blocks
* Update docs/_interface/Managing-your-accounts.md
Co-authored-by: Martin Holst Swende <martin@swende.se>
* reword --allow-insecure-lock warning
Co-authored-by: Martin Holst Swende <martin@swende.se>
It is recommended to use the external key manager Clef for interacting with Geth because it can be run from secure external devices and has additional security benefits such as the ability to sign transactions according to custom rules. Instructions for setting up and using Clef can be found on the [Clef page](../clef/tutorial). However, Geth also has its own built-in account management tools that are more convenient and secure enough for many use-cases. This page will describe how to manage accounts using Geth's built in tools. The command line is considered first and then managing accounts from the Javascript console is considered in a [separate section](#accounts-in-the-javascript-console).
If you lose the password you use to encrypt your account, you will not be able to access that account.
Repeat: It is NOT possible to access your account without a password and there is no _forgot my password_ option here. Do not forget it.
The ethereum CLI `geth` provides account management via the `account` command:
## Account command
Interacting with accounts is achieved using Geth's `account` command:
for more information. If a custom datadir and keystore option are given the keystore
option takes preference over the datadir option.
The newest format of the keyfiles is: `UTC--<created_at UTC ISO8601>--<address hex>`. The
order of accounts when listing, is lexicographic, but as a consequence of the timestamp
format, it is actually order of creation
The account command enables the user to create new accounts, list existing accounts, import private keys into a new account, update key formats and update the passwords that lock each account. In interactive mode, the user is prompted for passwords in the console when the `account` functions are invoked, whereas in non-interactive mode passwords to unlock accounts are saved to text files whose path is passed to Geth at startup. Non-interactive mode is only intended for use on private networks or known safe environments.
It is safe to transfer the entire directory or the individual keys therein between
ethereum nodes. Note that in case you are adding keys to your node from a different node,
the order of accounts may change. So make sure you do not rely or change the index in your
scripts or code snippets.
And again. **DO NOT FORGET YOUR PASSWORD**
The `account` subcommands are:
```
COMMANDS:
@ -52,7 +26,8 @@ COMMANDS:
import Import a private key into a new account
```
You can get info about subcommands by `geth account <command> --help`.
Information about the subcommands can be displayed in the terminal using `geth account <command> --help`. For example, for the `list` subcommand:
```
$ geth account list --help
list [command options] [arguments...]
@ -60,293 +35,224 @@ list [command options] [arguments...]
Print a short summary of all accounts
OPTIONS:
--datadir "/home/bas/.ethereum" Data directory for the databases and keystore
--keystore Directory for the keystore (default = inside the datadir)
--datadir "/home/.ethereum" Data directory for the databases and keystore
--keystore Directory for the keystore (default = inside the datadir)
```
Accounts can also be managed via the [Javascript Console](../interface/javascript-console)
## Examples
### Interactive use
## Creating new accounts
#### creating an account
New accounts can be created using `account new`. This generates a new key pair and adds them to the `keystore` directory in the `datadir`. To create a new account in the default data directory:
```
```shell
$ geth account new
```
This returns the following to the terminal:
```terminal
Your new account is locked with a password. Please give a password. Do not forget this password.
{% include note.html content=" If the password provided on account creation is lost or forgotten, there is no way to retrive it and the account will simply stay locked forever. The password MUST be backed up safely and securely! **IT IS CRITICAL TO BACKUP THE KEYSTORE AND REMEMBER PASSWORDS**" %}
#### Account update
The newly generated key files can be viewed in `<datadir>/keystore/`. The file naming format is `UTC--<date>--<address>` where `date` is the date and time of key creation formatted according to [UTC 8601](https://www.iso.org/iso-8601-date-and-time-format.html) with zero time offset and seconds precise to eight decimal places. `address` is the 40 hexadecimal characters that make up the account address without a leading `0x`, for example:
You supply a plaintext password file as argument to the `--password` flag. The data in the
file consists of the raw characters of the password, followed by a single newline.
## Listing Accounts
**Note**: Supplying the password directly as part of the command line is not recommended,
but you can always use shell trickery to get round this restriction.
Listing all existing accounts is achieved using the `account list` command. If the keystore is located anywhere other than the default location its path should be included with the `keystore` flag. For example, if the datadir is `some-dir`:
The ordering of accounts when they are listed is lexicographic, but is effectively chronological based on time of creation due to the timestamp in the file name. It is safe to transfer the entire `keystore` directory or individual key files between Ethereum nodes. This is important because when accounts are added from other nodes the order of accounts in the keystore may change. It is therefore important not to rely on account indexes in scripts or code snippets.
```
$ geth account new
$ geth account new --password /path/to/passwdfile
$ geth account new --password <(echo $mypassword)
```
## Importing accounts
Creates a new account and prints the address.
### Import a keyfile
On the console, use:
It is also possible to create a new account by importing a private key. For example, a user might already have some ether at an address they created using a browser wallet and now wish to use a new Geth node to interact with their funds. In this case, the private key can be exported from the browser wallet and imported into Geth. Geth requires the private key to be stored as a file which contains the private key as unencrypted canonical elliptic curve bytes encoded into hex (i.e. plain text key without leading 0x). The new account is then saved in encrypted format, protected by a passphrase the user provides on request. As always, this passphrase must be securely and safely backed up - there is no way to retrieve or reset it if it is forgotten!
The account is saved in encrypted format. You **must** remember this passphrase to unlock
your account in the future.
This import/export process is not necessary for transferring accounts between Geth instances because the key files can simply be copied directly from one keystore to another.
For non-interactive use the passphrase can be specified with the `--password` flag:
It is also possible to import an account in non-interactive mode by saving the account password as plaintext in a `.txt` file and passing its path with the `--password` flag on startup.
In this case, it is important to ensure the password file is not readable by anyone but the intended user. This can be achieved by changing the file permissions. On Linux, the following commands update the file permissions so only the current user has access:
```shell
chmod 700 /path/to/password
cat > /path/to/password
<typepasswordhere>
```
Note, this is meant to be used for testing only, it is a bad idea to save your
password to file or expose in any other way.
### Import a presale wallet
## Creating an account by importing a private key
Assuming the password is known, importing a presale wallet is very easy. The `wallet import` commands are used, passing the path to the wallet.
```
geth account import <keyfile>
```shell
geth wallet import /path/presale.wallet
```
Imports an unencrypted private key from `<keyfile>` and creates a new account and prints
the address.
The keyfile is assumed to contain an unencrypted private key as canonical EC raw bytes
encoded into hex.
## Updating accounts
The account is saved in encrypted format, you are prompted for a passphrase.
The `account update` subcommand is used to unlock an account and migrate it to the newest format. This is useful for accounts that may have been created in a format that has since been deprecated. The same command can be used to update the account password. The current password and account address are needed in order to update the account, as follows:
You must remember this passphrase to unlock your account in the future.
Please give a new password. Do not forget this password.
Passphrase:
Repeat Passphrase:
0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b
```
**Note**: Since you can directly copy your encrypted accounts to another ethereum
instance, this import/export mechanism is not needed when you transfer an account between
nodes.
Alternatively, in non-interactive mode the path to a password file containing the account password in unencrypted plaintext can be passed with the `--password` flag:
**Warning:** when you copy keys into an existing node's keystore, the order of accounts
you are used to may change. Therefore you make sure you either do not rely on the account
order or doublecheck and update the indexes used in your scripts.
**Warning:** If you use the password flag with a password file, best to make sure the file
is not readable or even listable for anyone but you. You achieve this with:
Updating the account replaces the original file with a new one - this means the original file is no longer available after it has been updated.
```
touch /path/to/password
chmod 700 /path/to/password
cat > /path/to/password
>I type my pass here^D
```
## Updating an existing account
## Unlocking accounts
You can update an existing account on the command line with the `update` subcommand with
the account address or index as parameter. You can specify multiple accounts at once.
In Geth, accounts are locked unless they are explicitly unlocked. If an account is intended to be used by apps connecting to Geth via RPC then it can be unlocked in non-interactive mode by passing the `--unlock` flag with a comma-separated list of account addresses (or keystore indexes) to unlock. This unlocks the accounts for one session only. Including the `--unlock` flag without any account addresses defaults to unlocking the first account in the keystore.
The account is saved in the newest version in encrypted format, you are prompted
for a passphrase to unlock the account and another to save the updated file.
Geth will start and prompt the user to input the account password in the terminal. Alternatively, the user can provide a password as a text file and pass its path to `--password`:
This same command can therefore be used to migrate an account of a deprecated
format to the newest format or change the password for an account.
After a successful update, all previous formats/versions of that same key are removed!
{% include note.html content=" By default, account **unlocking is forbidden when HTTP or Websocket access is enabled** (i.e. by passing `--http` or `ws` flag). This is because an attacker that manages to access the node via the externally-exposed HTTP/WS port can then control the unlocked account. It is possible to force account unlock by including the `--allow-insecure-unlock` flag but this is unsafe and **not recommended** except for expert users that completely understand how it can be used safely. This is not a hypothetical risk: **there are bots that continually scan for http-enabled Ethereum nodes to attack**" %}
# Importing your presale wallet
Importing your presale wallet is very easy. If you remember your password that is:
## Accounts in the Javascript console
```
geth wallet import /path/to/my/presale.wallet
Account management can also be achieved in the Javascript console attached to a running Geth instance. Assuming Geth is already running, in a new terminal attach a Javascript console using the `geth.ipc` file. This file can be found in the data directory. Assuming the data directory is named `data` the console can be started using:
```shell
geth attach data/geth.ipc
```
will prompt for your password and imports your ether presale account. It can be used
non-interactively with the --password option taking a passwordfile as argument containing
the wallet password in cleartext.
### New accounts
# Listing accounts and checking balances
New accounts can be generated using the Javascript console using `personal.newAccount()`. A new password is requested in the console and successful account creation is confirmed by the new account address being displayed.
### Listing your current accounts
```shell
personal.newAccount()
```
From the command line, call the CLI with:
Accounts can also be created by importing private keys directly in the Javascript console. The private key is passed as an unencrypted hex-encoded string to `personal.importRawKey()` along with a passphrase that will be used to encrypt the key. A new key file will be generated from the private key and saved to the keystore.
This order can change if you copy keyfiles from other nodes, so make sure you either do not rely on indexes or make sure if you copy keys you check and update your account indexes in your scripts.
The `accounts` function in the `eth` namespace can be used to list the accounts that currently exist in the keystore.:
This unlocked account can now be used to sign and send transactions. it is also possible to pass the passphrase as an argument to `personal.unlockAccount()` along with a duration after which the accout will automatically re-lock (in seconds), as follows:
Note that we do NOT recommend using the password argument here, since the console history
is logged, so you may compromise your account. You have been warned.
This unlocks the account for 60 seconds. However, this is not recommended because the command history is logged by the Javascript console which could compromise the security of the account. An unlocked account can be manually re-locked using `personal.lockAccount()`, passing the address as the sole argument.
Sending transactions from the Javascript console also requires the sender account to be unlocked. There are two ways to send transactions: `eth.sendTransaction` and `personal.sendTransaction`. The difference between these two functions is that `eth.sendTransaction` requires the account to be unlocked globally, at the node level (i.e., by unlocking it on the command line at the start of the Geth session). On the other hand, `personal.sendTransaction` takes a passphrase argument that unlocks the account temporarily in order to sign the transaction, then locks it again immediately afterwards. For example, to send 5 ether between two accounts in the keystore:
Since this function will disappear after restarting geth, it can be helpful to store
commonly used functions to be recalled later. The
[loadScript](../interface/javascript-console)
function makes this very easy.
```shell
var tx = {from: eth.accounts[1], to: eth.accounts[2], value: web3.toWei(5, "ether")}
First, save the `checkAllBalances()` function definition to a file on your computer. For
example, `/Users/username/gethload.js`. Then load the file from the interactive console:
# this requires global account unlock for eth.accounts[1]
eth.sendTransaction(tx)
# this unlocks eth.accounts[1] temporarily just to send the transaction
personal.sendTransaction(tx, "password")
```
> loadScript("/Users/username/gethload.js")
true
```
The file will modify your JavaScript environment as if you has typed the commands
manually. Feel free to experiment!
## Summary
This page has demonstrated how to use Geth's built-in account management tools, both on the command line and in the Javascript console. Accounts are stored encrypted by a password. It is critical that the account passwords and the keystore directory are safely and securely backed up.
Joseph Cook
2 years ago
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