901 lines
30 KiB
Nim
901 lines
30 KiB
Nim
import
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std/[os, strutils, terminal, wordwrap, unicode],
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chronicles, chronos, web3, stint, json_serialization, zxcvbn,
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serialization, blscurve, eth/common/eth_types, eth/keys, confutils, bearssl,
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spec/[datatypes, digest, crypto, keystore],
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stew/io2, libp2p/crypto/crypto as lcrypto,
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nimcrypto/utils as ncrutils,
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conf, ssz/merkleization, network_metadata, filepath
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export
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keystore
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when defined(windows):
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import stew/[windows/acl]
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{.push raises: [Defect].}
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{.localPassC: "-fno-lto".} # no LTO for crypto
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const
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keystoreFileName* = "keystore.json"
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netKeystoreFileName* = "network_keystore.json"
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type
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WalletPathPair* = object
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wallet*: Wallet
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path*: string
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CreatedWallet* = object
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walletPath*: WalletPathPair
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seed*: KeySeed
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const
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minPasswordLen = 12
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minPasswordEntropy = 60.0
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mostCommonPasswords = wordListArray(
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currentSourcePath.parentDir /
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"../vendor/nimbus-security-resources/passwords/10-million-password-list-top-100000.txt",
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minWordLen = minPasswordLen)
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proc echoP*(msg: string) =
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## Prints a paragraph aligned to 80 columns
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echo ""
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echo wrapWords(msg, 80)
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proc checkAndCreateDataDir*(dataDir: string): bool =
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when defined(posix):
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let requiredPerms = 0o700
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if isDir(dataDir):
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let currPermsRes = getPermissions(dataDir)
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if currPermsRes.isErr():
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fatal "Could not check data directory permissions",
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data_dir = dataDir, errorCode = $currPermsRes.error,
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errorMsg = ioErrorMsg(currPermsRes.error)
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return false
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else:
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let currPerms = currPermsRes.get()
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if currPerms != requiredPerms:
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warn "Data directory has insecure permissions. Correcting them.",
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data_dir = dataDir,
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current_permissions = currPerms.toOct(4),
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required_permissions = requiredPerms.toOct(4)
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let newPermsRes = setPermissions(dataDir, requiredPerms)
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if newPermsRes.isErr():
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fatal "Could not set data directory permissions",
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data_dir = dataDir,
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errorCode = $newPermsRes.error,
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errorMsg = ioErrorMsg(newPermsRes.error),
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old_permissions = currPerms.toOct(4),
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new_permissions = requiredPerms.toOct(4)
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return false
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else:
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let res = secureCreatePath(dataDir)
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if res.isErr():
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fatal "Could not create data directory", data_dir = dataDir,
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errorMsg = ioErrorMsg(res.error), errorCode = $res.error
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return false
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elif defined(windows):
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let amask = {AccessFlags.Read, AccessFlags.Write, AccessFlags.Execute}
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if fileAccessible(dataDir, amask):
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let cres = checkCurrentUserOnlyACL(dataDir)
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if cres.isErr():
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fatal "Could not check data folder's ACL",
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data_dir = dataDir, errorCode = $cres.error,
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errorMsg = ioErrorMsg(cres.error)
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return false
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else:
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if cres.get() == false:
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fatal "Data folder has insecure ACL", data_dir = dataDir
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return false
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else:
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let res = secureCreatePath(dataDir)
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if res.isErr():
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fatal "Could not create data folder", data_dir = dataDir,
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errorMsg = ioErrorMsg(res.error), errorCode = $res.error
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return false
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else:
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fatal "Unsupported operation system"
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return false
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return true
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proc checkSensitiveFilePermissions*(filePath: string): bool =
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## Check if ``filePath`` has only "(600) rw-------" permissions.
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## Procedure returns ``false`` if permissions are different and we can't
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## correct them.
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when defined(windows):
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let cres = checkCurrentUserOnlyACL(filePath)
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if cres.isErr():
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fatal "Could not check file's ACL",
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key_path = filePath, errorCode = $cres.error,
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errorMsg = ioErrorMsg(cres.error)
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return false
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else:
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if cres.get() == false:
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fatal "File has insecure permissions", key_path = filePath
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return false
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else:
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let requiredPerms = 0o600
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let currPermsRes = getPermissions(filePath)
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if currPermsRes.isErr():
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error "Could not check file permissions",
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key_path = filePath, errorCode = $currPermsRes.error,
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errorMsg = ioErrorMsg(currPermsRes.error)
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return false
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else:
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let currPerms = currPermsRes.get()
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if currPerms != requiredPerms:
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warn "File has insecure permissions. Correcting them.",
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key_path = filePath,
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current_permissions = currPerms.toOct(4),
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required_permissions = requiredPerms.toOct(4)
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let newPermsRes = setPermissions(filePath, requiredPerms)
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if newPermsRes.isErr():
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fatal "Could not set data directory permissions",
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key_path = filePath,
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errorCode = $newPermsRes.error,
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errorMsg = ioErrorMsg(newPermsRes.error),
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old_permissions = currPerms.toOct(4),
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new_permissions = requiredPerms.toOct(4)
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return false
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return true
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proc keyboardCreatePassword(prompt: string,
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confirm: string,
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allowEmpty = false): KsResult[string] =
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while true:
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let password =
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try:
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readPasswordFromStdin(prompt)
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except IOError:
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error "Could not read password from stdin"
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return err("Could not read password from stdin")
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if password.len == 0 and allowEmpty:
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return ok("")
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# We treat `password` as UTF-8 encoded string.
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if validateUtf8(password) == -1:
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if runeLen(password) < minPasswordLen:
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echoP "The entered password should be at least " & $minPasswordLen &
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" characters."
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echo ""
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continue
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elif passwordEntropy(password) < minPasswordEntropy:
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echoP "The entered password has low entropy and may be easy to " &
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"brute-force with automated tools. Please increase the " &
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"variety of the user characters."
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continue
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elif password in mostCommonPasswords:
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echoP "The entered password is too commonly used and it would be " &
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"easy to brute-force with automated tools."
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echo ""
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continue
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else:
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echoP "Entered password is not valid UTF-8 string"
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echo ""
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continue
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let confirmedPassword =
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try:
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readPasswordFromStdin(confirm)
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except IOError:
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error "Could not read password from stdin"
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return err("Could not read password from stdin")
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if password != confirmedPassword:
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echo "Passwords don't match, please try again\n"
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continue
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return ok(password)
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proc keyboardGetPassword[T](prompt: string, attempts: int,
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pred: proc(p: string): KsResult[T] {.closure.}): KsResult[T] =
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var
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remainingAttempts = attempts
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counter = 1
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while remainingAttempts > 0:
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let passphrase =
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try:
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readPasswordFromStdin(prompt)
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except IOError:
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error "Could not read password from stdin"
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return
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os.sleep(1000 * counter)
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let res = pred(passphrase)
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if res.isOk():
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return res
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else:
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inc(counter)
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dec(remainingAttempts)
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err("Failed to decrypt keystore")
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proc loadKeystore*(validatorsDir, secretsDir, keyName: string,
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nonInteractive: bool): Option[ValidatorPrivKey] =
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let
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keystorePath = validatorsDir / keyName / keystoreFileName
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keystore =
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try: Json.loadFile(keystorePath, Keystore)
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except IOError as err:
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error "Failed to read keystore", err = err.msg, path = keystorePath
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return
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except SerializationError as err:
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error "Invalid keystore", err = err.formatMsg(keystorePath)
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return
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let passphrasePath = secretsDir / keyName
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if fileExists(passphrasePath):
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if not(checkSensitiveFilePermissions(passphrasePath)):
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error "Password file has insecure permissions", key_path = keyStorePath
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return
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let passphrase = KeystorePass.init:
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try:
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readFile(passphrasePath)
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except IOError as err:
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error "Failed to read passphrase file", err = err.msg,
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path = passphrasePath
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return
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let res = decryptKeystore(keystore, passphrase)
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if res.isOk:
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return res.get.some
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else:
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error "Failed to decrypt keystore", keystorePath, passphrasePath
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return
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if nonInteractive:
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error "Unable to load validator key store. Please ensure matching passphrase exists in the secrets dir",
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keyName, validatorsDir, secretsDir = secretsDir
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return
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let prompt = "Please enter passphrase for key \"" &
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(validatorsDir / keyName) & "\": "
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let res = keyboardGetPassword[ValidatorPrivKey](prompt, 3,
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proc (password: string): KsResult[ValidatorPrivKey] =
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let decrypted = decryptKeystore(keystore, KeystorePass.init password)
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if decrypted.isErr():
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error "Keystore decryption failed. Please try again", keystorePath
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decrypted
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)
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if res.isOk():
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some(res.get())
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else:
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return
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iterator validatorKeysFromDirs*(validatorsDir, secretsDir: string): ValidatorPrivKey =
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try:
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for kind, file in walkDir(validatorsDir):
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if kind == pcDir:
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let keyName = splitFile(file).name
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let key = loadKeystore(validatorsDir, secretsDir, keyName, true)
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if key.isSome:
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yield key.get
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else:
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quit 1
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except OSError:
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quit 1
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iterator validatorKeys*(conf: BeaconNodeConf|ValidatorClientConf): ValidatorPrivKey =
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let validatorsDir = conf.validatorsDir
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try:
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for kind, file in walkDir(validatorsDir):
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if kind == pcDir:
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let keyName = splitFile(file).name
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let key = loadKeystore(validatorsDir, conf.secretsDir, keyName, conf.nonInteractive)
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if key.isSome:
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yield key.get
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else:
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quit 1
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except OSError as err:
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error "Validator keystores directory not accessible",
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path = validatorsDir, err = err.msg
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quit 1
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type
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KeystoreGenerationError = enum
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RandomSourceDepleted,
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FailedToCreateValidatorDir
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FailedToCreateSecretsDir
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FailedToCreateSecretFile
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FailedToCreateKeystoreFile
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proc loadNetKeystore*(keyStorePath: string,
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insecurePwd: Option[string]): Option[lcrypto.PrivateKey] =
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if not(checkSensitiveFilePermissions(keystorePath)):
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error "Network keystorage file has insecure permissions",
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key_path = keyStorePath
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return
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let keyStore =
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try:
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Json.loadFile(keystorePath, NetKeystore)
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except IOError as err:
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error "Failed to read network keystore", err = err.msg,
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path = keystorePath
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return
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except SerializationError as err:
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error "Invalid network keystore", err = err.formatMsg(keystorePath)
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return
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if insecurePwd.isSome():
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warn "Using insecure password to unlock networking key"
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let decrypted = decryptNetKeystore(keystore, KeystorePass.init insecurePwd.get)
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if decrypted.isOk:
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return some(decrypted.get())
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else:
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error "Network keystore decryption failed", key_store = keyStorePath
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return
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else:
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let prompt = "Please enter passphrase to unlock networking key: "
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let res = keyboardGetPassword[lcrypto.PrivateKey](prompt, 3,
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proc (password: string): KsResult[lcrypto.PrivateKey] =
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let decrypted = decryptNetKeystore(keystore, KeystorePass.init password)
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if decrypted.isErr():
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error "Keystore decryption failed. Please try again", keystorePath
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decrypted
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)
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if res.isOk():
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some(res.get())
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else:
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return
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proc saveNetKeystore*(rng: var BrHmacDrbgContext, keyStorePath: string,
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netKey: lcrypto.PrivateKey, insecurePwd: Option[string]
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): Result[void, KeystoreGenerationError] =
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let password =
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if insecurePwd.isSome():
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warn "Using insecure password to lock networking key",
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key_path = keyStorePath
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insecurePwd.get()
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else:
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let prompt = "Please enter NEW password to lock network key storage: "
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let confirm = "Please confirm, network key storage password: "
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let res = keyboardCreatePassword(prompt, confirm)
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if res.isErr():
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return err(FailedToCreateKeystoreFile)
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res.get()
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let keyStore = createNetKeystore(kdfScrypt, rng, netKey,
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KeystorePass.init password)
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var encodedStorage: string
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try:
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encodedStorage = Json.encode(keyStore)
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except SerializationError:
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error "Could not serialize network key storage", key_path = keyStorePath
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return err(FailedToCreateKeystoreFile)
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let res = secureWriteFile(keyStorePath, encodedStorage)
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if res.isOk():
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ok()
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else:
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error "Could not write to network key storage file",
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key_path = keyStorePath
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err(FailedToCreateKeystoreFile)
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proc saveKeystore(rng: var BrHmacDrbgContext,
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validatorsDir, secretsDir: string,
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signingKey: ValidatorPrivKey, signingPubKey: ValidatorPubKey,
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signingKeyPath: KeyPath): Result[void, KeystoreGenerationError] =
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let
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keyName = "0x" & $signingPubKey
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validatorDir = validatorsDir / keyName
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if not existsDir(validatorDir):
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var password = KeystorePass.init ncrutils.toHex(getRandomBytes(rng, 32))
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defer: burnMem(password)
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let
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keyStore = createKeystore(kdfPbkdf2, rng, signingKey,
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password, signingKeyPath)
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keystoreFile = validatorDir / keystoreFileName
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var encodedStorage: string
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try:
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encodedStorage = Json.encode(keyStore)
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except SerializationError:
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error "Could not serialize keystorage", key_path = keystoreFile
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return err(FailedToCreateKeystoreFile)
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let vres = secureCreatePath(validatorDir)
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if vres.isErr():
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return err(FailedToCreateValidatorDir)
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let sres = secureCreatePath(secretsDir)
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if sres.isErr():
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return err(FailedToCreateSecretsDir)
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let swres = secureWriteFile(secretsDir / keyName, password.str)
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if swres.isErr():
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return err(FailedToCreateSecretFile)
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let kwres = secureWriteFile(keystoreFile, encodedStorage)
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if kwres.isErr():
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return err(FailedToCreateKeystoreFile)
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ok()
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proc generateDeposits*(preset: RuntimePreset,
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rng: var BrHmacDrbgContext,
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seed: KeySeed,
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firstValidatorIdx, totalNewValidators: int,
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validatorsDir: string,
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secretsDir: string): Result[seq[DepositData], KeystoreGenerationError] =
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var deposits: seq[DepositData]
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notice "Generating deposits", totalNewValidators, validatorsDir, secretsDir
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# We'll reuse a single variable here to make the secret
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# scrubbing (burnMem) easier to handle:
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var baseKey = deriveMasterKey(seed)
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defer: burnMem(baseKey)
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baseKey = deriveChildKey(baseKey, baseKeyPath)
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for i in 0 ..< totalNewValidators:
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let validatorIdx = firstValidatorIdx + i
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# We'll reuse a single variable here to make the secret
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# scrubbing (burnMem) easier to handle:
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var derivedKey = baseKey
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defer: burnMem(derivedKey)
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derivedKey = deriveChildKey(derivedKey, validatorIdx)
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derivedKey = deriveChildKey(derivedKey, 0) # This is witdrawal key
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let withdrawalPubKey = derivedKey.toPubKey
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derivedKey = deriveChildKey(derivedKey, 0) # This is the signing key
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let signingPubKey = derivedKey.toPubKey
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? saveKeystore(rng, validatorsDir, secretsDir,
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derivedKey, signingPubKey,
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makeKeyPath(validatorIdx, signingKeyKind))
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deposits.add preset.prepareDeposit(withdrawalPubKey, derivedKey, signingPubKey)
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ok deposits
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proc saveWallet*(wallet: Wallet, outWalletPath: string): Result[void, string] =
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let walletDir = splitFile(outWalletPath).dir
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var encodedWallet: string
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try:
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encodedWallet = Json.encode(wallet, pretty = true)
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except SerializationError:
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return err("Could not serialize wallet")
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let pres = secureCreatePath(walletDir)
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if pres.isErr():
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return err("Could not create wallet directory [" & walletDir & "]")
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let wres = secureWriteFile(outWalletPath, encodedWallet)
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if wres.isErr():
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return err("Could not write wallet to file [" & outWalletPath & "]")
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ok()
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proc saveWallet*(wallet: WalletPathPair): Result[void, string] =
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saveWallet(wallet.wallet, wallet.path)
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proc readPasswordInput(prompt: string, password: var TaintedString): bool =
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try:
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when defined(windows):
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# readPasswordFromStdin() on Windows always returns `false`.
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# https://github.com/nim-lang/Nim/issues/15207
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discard readPasswordFromStdin(prompt, password)
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true
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else:
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readPasswordFromStdin(prompt, password)
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except IOError:
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false
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proc setStyleNoError(styles: set[Style]) =
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when defined(windows):
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try: stdout.setStyle(styles)
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except: discard
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else:
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try: stdout.setStyle(styles)
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except IOError, ValueError: discard
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proc setForegroundColorNoError(color: ForegroundColor) =
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when defined(windows):
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try: stdout.setForegroundColor(color)
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except: discard
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else:
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try: stdout.setForegroundColor(color)
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except IOError, ValueError: discard
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proc resetAttributesNoError() =
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when defined(windows):
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try: stdout.resetAttributes()
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except: discard
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else:
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try: stdout.resetAttributes()
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except IOError: discard
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proc importKeystoresFromDir*(rng: var BrHmacDrbgContext,
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importedDir, validatorsDir, secretsDir: string) =
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var password: TaintedString
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defer: burnMem(password)
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try:
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for file in walkDirRec(importedDir):
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let filenameParts = splitFile(file)
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|
if toLowerAscii(filenameParts.ext) != ".json":
|
|
continue
|
|
|
|
# In case we are importing from eth2.0-deposits-cli, the imported
|
|
# validator_keys directory will also include a "deposit_data" file
|
|
# intended for uploading to the launchpad. We'll skip it to avoid
|
|
# the "Invalid keystore" warning that it will trigger.
|
|
if filenameParts.name.startsWith("deposit_data"):
|
|
continue
|
|
|
|
let keystore =
|
|
try:
|
|
Json.loadFile(file, Keystore)
|
|
except SerializationError as e:
|
|
warn "Invalid keystore", err = e.formatMsg(file)
|
|
continue
|
|
except IOError as e:
|
|
warn "Failed to read keystore file", file, err = e.msg
|
|
continue
|
|
|
|
var firstDecryptionAttempt = true
|
|
|
|
while true:
|
|
var secret: seq[byte]
|
|
let status = decryptCryptoField(keystore.crypto,
|
|
KeystorePass.init password,
|
|
secret)
|
|
case status
|
|
of Success:
|
|
let privKey = ValidatorPrivKey.fromRaw(secret)
|
|
if privKey.isOk:
|
|
let pubKey = privKey.value.toPubKey
|
|
let status = saveKeystore(rng, validatorsDir, secretsDir,
|
|
privKey.value, pubKey,
|
|
keystore.path)
|
|
if status.isOk:
|
|
notice "Keystore imported", file
|
|
else:
|
|
error "Failed to import keystore", file, err = status.error
|
|
else:
|
|
error "Imported keystore holds invalid key", file, err = privKey.error
|
|
break
|
|
of InvalidKeystore:
|
|
warn "Invalid keystore", file
|
|
break
|
|
of InvalidPassword:
|
|
if firstDecryptionAttempt:
|
|
try:
|
|
const msg = "Please enter the password for decrypting '$1' " &
|
|
"or press ENTER to skip importing this keystore"
|
|
echo msg % [file]
|
|
except ValueError:
|
|
raiseAssert "The format string above is correct"
|
|
else:
|
|
echo "The entered password was incorrect. Please try again."
|
|
firstDecryptionAttempt = false
|
|
|
|
if not readPasswordInput("Password: ", password):
|
|
echo "System error while entering password. Please try again."
|
|
|
|
if password.len == 0:
|
|
break
|
|
except OSError:
|
|
fatal "Failed to access the imported deposits directory"
|
|
quit 1
|
|
|
|
template ask(prompt: string): string =
|
|
try:
|
|
stdout.write prompt, ": "
|
|
stdin.readLine()
|
|
except IOError:
|
|
return err "failure to read data from stdin"
|
|
|
|
proc pickPasswordAndSaveWallet(rng: var BrHmacDrbgContext,
|
|
config: BeaconNodeConf,
|
|
seed: KeySeed): Result[WalletPathPair, string] =
|
|
echoP "When you perform operations with your wallet such as withdrawals " &
|
|
"and additional deposits, you'll be asked to enter a signing " &
|
|
"password. Please note that this password is local to the current " &
|
|
"machine and you can change it at any time."
|
|
echo ""
|
|
|
|
var password =
|
|
block:
|
|
let prompt = "Please enter a password: "
|
|
let confirm = "Please repeat the password: "
|
|
let res = keyboardCreatePassword(prompt, confirm)
|
|
if res.isErr():
|
|
return err($res.error)
|
|
res.get()
|
|
defer: burnMem(password)
|
|
|
|
var name: WalletName
|
|
let outWalletName = config.outWalletName
|
|
if outWalletName.isSome:
|
|
name = outWalletName.get
|
|
else:
|
|
echoP "For your convenience, the wallet can be identified with a name " &
|
|
"of your choice. Please enter a wallet name below or press ENTER " &
|
|
"to continue with a machine-generated name."
|
|
echo ""
|
|
|
|
while true:
|
|
var enteredName = ask "Wallet name"
|
|
if enteredName.len > 0:
|
|
name =
|
|
try:
|
|
WalletName.parseCmdArg(enteredName)
|
|
except CatchableError as err:
|
|
echo err.msg & ". Please try again."
|
|
continue
|
|
break
|
|
|
|
let nextAccount =
|
|
if config.cmd == wallets and config.walletsCmd == WalletsCmd.restore:
|
|
config.restoredDepositsCount
|
|
else:
|
|
none Natural
|
|
|
|
let wallet = createWallet(kdfPbkdf2, rng, seed,
|
|
name = name,
|
|
nextAccount = nextAccount,
|
|
password = KeystorePass.init password)
|
|
|
|
let outWalletFileFlag = config.outWalletFile
|
|
let outWalletFile =
|
|
if outWalletFileFlag.isSome:
|
|
string outWalletFileFlag.get
|
|
else:
|
|
config.walletsDir / addFileExt(string wallet.name, "json")
|
|
|
|
let status = saveWallet(wallet, outWalletFile)
|
|
if status.isErr:
|
|
return err("failure to create wallet file due to " & status.error)
|
|
|
|
echo "\nWallet file successfully written to \"", outWalletFile, "\""
|
|
return ok WalletPathPair(wallet: wallet, path: outWalletFile)
|
|
|
|
when defined(windows):
|
|
proc clearScreen =
|
|
discard execShellCmd("cls")
|
|
else:
|
|
template clearScreen =
|
|
echo "\e[1;1H\e[2J\e[3J"
|
|
|
|
proc createWalletInteractively*(
|
|
rng: var BrHmacDrbgContext,
|
|
config: BeaconNodeConf): Result[CreatedWallet, string] =
|
|
|
|
if config.nonInteractive:
|
|
return err "not running in interactive mode"
|
|
|
|
echoP "The generated wallet is uniquely identified by a seed phrase " &
|
|
"consisting of 24 words. In case you lose your wallet and you " &
|
|
"need to restore it on a different machine, you can use the " &
|
|
"seed phrase to re-generate your signing and withdrawal keys."
|
|
echoP "The seed phrase should be kept secret in a safe location as if " &
|
|
"you are protecting a sensitive password. It can be used to withdraw " &
|
|
"funds from your wallet."
|
|
echoP "We will display the seed phrase on the next screen. Please make sure " &
|
|
"you are in a safe environment and there are no cameras or potentially " &
|
|
"unwanted eye witnesses around you. Please prepare everything necessary " &
|
|
"to copy the seed phrase to a safe location and type 'continue' in " &
|
|
"the prompt below to proceed to the next screen or 'q' to exit now."
|
|
echo ""
|
|
|
|
while true:
|
|
let answer = ask "Action"
|
|
if answer.len > 0 and answer[0] == 'q': quit 1
|
|
if answer == "continue": break
|
|
echoP "To proceed to your seed phrase, please type 'continue' (without the quotes). " &
|
|
"Type 'q' to exit now."
|
|
echo ""
|
|
|
|
var mnemonic = generateMnemonic(rng)
|
|
defer: burnMem(mnemonic)
|
|
|
|
try:
|
|
echoP "Your seed phrase is:"
|
|
setStyleNoError({styleBright})
|
|
setForegroundColorNoError fgCyan
|
|
echoP $mnemonic
|
|
resetAttributesNoError()
|
|
except IOError, ValueError:
|
|
return err "failure to write to the standard output"
|
|
|
|
echoP "Press any key to continue."
|
|
try:
|
|
discard getch()
|
|
except IOError as err:
|
|
fatal "Failed to read a key from stdin", err = err.msg
|
|
quit 1
|
|
|
|
clearScreen()
|
|
|
|
echoP "To confirm that you've saved the seed phrase, please enter the " &
|
|
"first and the last three words of it. In case you've saved the " &
|
|
"seek phrase in your clipboard, we strongly advice clearing the " &
|
|
"clipboard now."
|
|
echo ""
|
|
|
|
for i in countdown(2, 0):
|
|
let answer = ask "Answer"
|
|
let parts = answer.split(' ', maxsplit = 1)
|
|
if parts.len == 2:
|
|
if count(parts[1], ' ') == 2 and
|
|
mnemonic.string.startsWith(parts[0]) and
|
|
mnemonic.string.endsWith(parts[1]):
|
|
break
|
|
else:
|
|
doAssert parts.len == 1
|
|
|
|
if i > 0:
|
|
echo "\nYour answer was not correct. You have ", i, " more attempts"
|
|
echoP "Please enter 4 words separated with a single space " &
|
|
"(the first word from the seed phrase, followed by the last 3)"
|
|
echo ""
|
|
else:
|
|
quit 1
|
|
|
|
clearScreen()
|
|
|
|
var mnenomicPassword = KeystorePass.init ""
|
|
defer: burnMem(mnenomicPassword)
|
|
|
|
echoP "The recovery of your wallet can be additionally protected by a" &
|
|
"recovery password. Since the seed phrase itself can be considered " &
|
|
"a password, setting such an additional password is optional. " &
|
|
"To ensure the strongest possible security, we recommend writing " &
|
|
"down your seed phrase and remembering your recovery password. " &
|
|
"If you don'n want to set a recovery password, just press ENTER."
|
|
|
|
var recoveryPassword = keyboardCreatePassword(
|
|
"Recovery password: ", "Confirm password: ", allowEmpty = true)
|
|
defer:
|
|
if recoveryPassword.isOk:
|
|
burnMem(recoveryPassword.get)
|
|
|
|
if recoveryPassword.isErr:
|
|
fatal "Failed to read password from stdin"
|
|
quit 1
|
|
|
|
var keystorePass = KeystorePass.init recoveryPassword.get
|
|
defer: burnMem(keystorePass)
|
|
|
|
var seed = getSeed(mnemonic, keystorePass)
|
|
defer: burnMem(seed)
|
|
|
|
let walletPath = ? pickPasswordAndSaveWallet(rng, config, seed)
|
|
return ok CreatedWallet(walletPath: walletPath, seed: seed)
|
|
|
|
proc restoreWalletInteractively*(rng: var BrHmacDrbgContext,
|
|
config: BeaconNodeConf) =
|
|
var
|
|
enteredMnemonic: TaintedString
|
|
validatedMnemonic: Mnemonic
|
|
|
|
defer:
|
|
burnMem enteredMnemonic
|
|
burnMem validatedMnemonic
|
|
|
|
echo "To restore your wallet, please enter your backed-up seed phrase."
|
|
while true:
|
|
if not readPasswordInput("Seedphrase: ", enteredMnemonic):
|
|
fatal "failure to read password from stdin"
|
|
quit 1
|
|
|
|
if validateMnemonic(enteredMnemonic, validatedMnemonic):
|
|
break
|
|
else:
|
|
echo "The entered mnemonic was not valid. Please try again."
|
|
|
|
echoP "If your seed phrase was protected with a recovery password, " &
|
|
"please enter it below. Please ENTER to attempt to restore " &
|
|
"the wallet without a recovery password."
|
|
|
|
var recoveryPassword = keyboardCreatePassword(
|
|
"Recovery password: ", "Confirm password: ", allowEmpty = true)
|
|
defer:
|
|
if recoveryPassword.isOk:
|
|
burnMem(recoveryPassword.get)
|
|
|
|
if recoveryPassword.isErr:
|
|
fatal "Failed to read password from stdin"
|
|
quit 1
|
|
|
|
var keystorePass = KeystorePass.init recoveryPassword.get
|
|
defer: burnMem(keystorePass)
|
|
|
|
var seed = getSeed(validatedMnemonic, keystorePass)
|
|
defer: burnMem(seed)
|
|
|
|
discard pickPasswordAndSaveWallet(rng, config, seed)
|
|
|
|
proc unlockWalletInteractively*(wallet: Wallet): Result[KeySeed, string] =
|
|
echo "Please enter the password for unlocking the wallet"
|
|
|
|
let res = keyboardGetPassword[KeySeed]("Password: ", 3,
|
|
proc (password: string): KsResult[KeySeed] =
|
|
var secret: seq[byte]
|
|
defer: burnMem(secret)
|
|
let status = decryptCryptoField(wallet.crypto, KeystorePass.init password, secret)
|
|
case status
|
|
of Success:
|
|
ok(KeySeed secret)
|
|
else:
|
|
# TODO Handle InvalidKeystore in a special way here
|
|
let failed = "Unlocking of the wallet failed. Please try again"
|
|
echo failed
|
|
err(failed)
|
|
)
|
|
|
|
if res.isOk():
|
|
ok(res.get())
|
|
else:
|
|
err "Unlocking of the wallet failed."
|
|
|
|
proc loadWallet*(fileName: string): Result[Wallet, string] =
|
|
try:
|
|
ok Json.loadFile(fileName, Wallet)
|
|
except SerializationError as err:
|
|
err "Invalid wallet syntax: " & err.formatMsg(fileName)
|
|
except IOError as err:
|
|
err "Error accessing wallet file \"" & fileName & "\": " & err.msg
|
|
|
|
proc findWallet*(config: BeaconNodeConf,
|
|
name: WalletName): Result[Option[WalletPathPair], string] =
|
|
var walletFiles = newSeq[string]()
|
|
try:
|
|
for kind, walletFile in walkDir(config.walletsDir):
|
|
if kind != pcFile: continue
|
|
let walletId = splitFile(walletFile).name
|
|
if cmpIgnoreCase(walletId, name.string) == 0:
|
|
let wallet = ? loadWallet(walletFile)
|
|
return ok some WalletPathPair(wallet: wallet, path: walletFile)
|
|
walletFiles.add walletFile
|
|
except OSError as err:
|
|
return err("Error accessing the wallets directory \"" &
|
|
config.walletsDir & "\": " & err.msg)
|
|
|
|
for walletFile in walletFiles:
|
|
let wallet = ? loadWallet(walletFile)
|
|
if cmpIgnoreCase(wallet.name.string, name.string) == 0 or
|
|
cmpIgnoreCase(wallet.uuid.string, name.string) == 0:
|
|
return ok some WalletPathPair(wallet: wallet, path: walletFile)
|
|
|
|
return ok none(WalletPathPair)
|
|
|
|
type
|
|
# This is not particularly well-standardized yet.
|
|
# Some relevant code for generating (1) and validating (2) the data can be found below:
|
|
# 1) https://github.com/ethereum/eth2.0-deposit-cli/blob/dev/eth2deposit/credentials.py
|
|
# 2) https://github.com/ethereum/eth2.0-deposit/blob/dev/src/pages/UploadValidator/validateDepositKey.ts
|
|
LaunchPadDeposit* = object
|
|
pubkey*: ValidatorPubKey
|
|
withdrawal_credentials*: Eth2Digest
|
|
amount*: Gwei
|
|
signature*: ValidatorSig
|
|
deposit_message_root*: Eth2Digest
|
|
deposit_data_root*: Eth2Digest
|
|
fork_version*: Version
|
|
|
|
func init*(T: type LaunchPadDeposit,
|
|
preset: RuntimePreset, d: DepositData): T =
|
|
T(pubkey: d.pubkey,
|
|
withdrawal_credentials: d.withdrawal_credentials,
|
|
amount: d.amount,
|
|
signature: d.signature,
|
|
deposit_message_root: hash_tree_root(d as DepositMessage),
|
|
deposit_data_root: hash_tree_root(d),
|
|
fork_version: preset.GENESIS_FORK_VERSION)
|
|
|
|
func `as`*(copied: LaunchPadDeposit, T: type DepositData): T =
|
|
T(pubkey: copied.pubkey,
|
|
withdrawal_credentials: copied.withdrawal_credentials,
|
|
amount: copied.amount,
|
|
signature: copied.signature)
|