nimbus-eth2/beacon_chain/validators/keystore_management.nim

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# beacon_chain
# Copyright (c) 2018-2023 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
{.push raises: [].}
import
std/[os, strutils, terminal, wordwrap, unicode],
chronicles, chronos, json_serialization, zxcvbn,
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bearssl/rand,
serialization, blscurve, eth/common/eth_types, eth/keys, confutils,
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nimbus_security_resources,
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".."/spec/[eth2_merkleization, keystore, crypto],
".."/spec/datatypes/base,
stew/io2, libp2p/crypto/crypto as lcrypto,
nimcrypto/utils as ncrutils,
".."/[conf, filepath, beacon_clock],
".."/networking/network_metadata,
./validator_pool
export
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keystore, validator_pool, crypto, rand
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when defined(windows):
import stew/[windows/acl]
{.localPassC: "-fno-lto".} # no LTO for crypto
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const
KeystoreFileName* = "keystore.json"
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RemoteKeystoreFileName* = "remote_keystore.json"
NetKeystoreFileName* = "network_keystore.json"
FeeRecipientFilename* = "suggested_fee_recipient.hex"
GasLimitFilename* = "suggested_gas_limit.json"
KeyNameSize* = 98 # 0x + hexadecimal key representation 96 characters.
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MaxKeystoreFileSize* = 65536
type
WalletPathPair* = object
wallet*: Wallet
path*: string
CreatedWallet* = object
walletPath*: WalletPathPair
seed*: KeySeed
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KmResult*[T] = Result[T, cstring]
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AnyKeystore* = RemoteKeystore | Keystore
RemoveValidatorStatus* {.pure.} = enum
deleted = "Deleted"
notFound = "Not found"
AddValidatorStatus* {.pure.} = enum
existingArtifacts = "Keystore artifacts already exists"
failed = "Validator not added"
AddValidatorFailure* = object
status*: AddValidatorStatus
message*: string
ImportResult*[T] = Result[T, AddValidatorFailure]
ValidatorPubKeyToDataFn* =
proc (pubkey: ValidatorPubKey): Opt[ValidatorAndIndex]
{.raises: [Defect], gcsafe.}
KeymanagerHost* = object
validatorPool*: ref ValidatorPool
rng*: ref HmacDrbgContext
keymanagerToken*: string
validatorsDir*: string
secretsDir*: string
defaultFeeRecipient*: Eth1Address
defaultGasLimit*: uint64
getValidatorAndIdxFn*: ValidatorPubKeyToDataFn
getBeaconTimeFn*: GetBeaconTimeFn
const
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minPasswordLen = 12
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minPasswordEntropy = 60.0
mostCommonPasswords = wordListArray(
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nimbusSecurityResourcesPath /
"passwords" / "10-million-password-list-top-100000.txt",
minWordLen = minPasswordLen)
func init*(T: type KeymanagerHost,
validatorPool: ref ValidatorPool,
rng: ref HmacDrbgContext,
keymanagerToken: string,
validatorsDir: string,
secretsDir: string,
defaultFeeRecipient: Eth1Address,
defaultGasLimit: uint64,
getValidatorAndIdxFn: ValidatorPubKeyToDataFn,
getBeaconTimeFn: GetBeaconTimeFn): T =
T(validatorPool: validatorPool,
rng: rng,
keymanagerToken: keymanagerToken,
validatorsDir: validatorsDir,
secretsDir: secretsDir,
defaultFeeRecipient: defaultFeeRecipient,
defaultGasLimit: defaultGasLimit,
getValidatorAndIdxFn: getValidatorAndIdxFn,
getBeaconTimeFn: getBeaconTimeFn)
proc echoP*(msg: string) =
## Prints a paragraph aligned to 80 columns
echo ""
echo wrapWords(msg, 80)
func init*(T: type KeystoreData,
privateKey: ValidatorPrivKey,
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keystore: Keystore, handle: FileLockHandle): T {.raises: [Defect].} =
KeystoreData(
kind: KeystoreKind.Local,
privateKey: privateKey,
description: keystore.description,
path: keystore.path,
uuid: keystore.uuid,
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handle: handle,
version: uint64(keystore.version),
pubkey: privateKey.toPubKey().toPubKey()
)
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func init*(T: type KeystoreData, keystore: RemoteKeystore,
handle: FileLockHandle): Result[T, cstring] {.raises: [Defect].} =
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let cookedKey = keystore.pubkey.load().valueOr:
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return err("Invalid validator's public key")
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ok(KeystoreData(
kind: KeystoreKind.Remote,
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handle: handle,
pubkey: cookedKey.toPubKey,
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description: keystore.description,
version: keystore.version,
remotes: keystore.remotes,
threshold: keystore.threshold
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))
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func init*(T: type KeystoreData, cookedKey: CookedPubKey,
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remotes: seq[RemoteSignerInfo], threshold: uint32,
handle: FileLockHandle): T =
KeystoreData(
kind: KeystoreKind.Remote,
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handle: handle,
pubkey: cookedKey.toPubKey(),
version: 2'u64,
remotes: remotes,
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threshold: threshold,
)
func init(T: type AddValidatorFailure, status: AddValidatorStatus,
msg = ""): AddValidatorFailure {.raises: [Defect].} =
AddValidatorFailure(status: status, message: msg)
func toKeystoreKind*(kind: ValidatorKind): KeystoreKind {.raises: [Defect].} =
case kind
of ValidatorKind.Local:
KeystoreKind.Local
of ValidatorKind.Remote:
KeystoreKind.Remote
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proc checkAndCreateDataDir*(dataDir: string): bool =
when defined(posix):
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let requiredPerms = 0o700
if isDir(dataDir):
let currPermsRes = getPermissions(dataDir)
if currPermsRes.isErr():
fatal "Could not check data directory permissions",
data_dir = dataDir, errorCode = $currPermsRes.error,
errorMsg = ioErrorMsg(currPermsRes.error)
return false
else:
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let currPerms = currPermsRes.get()
if currPerms != requiredPerms:
warn "Data directory has insecure permissions. Correcting them.",
data_dir = dataDir,
current_permissions = currPerms.toOct(4),
required_permissions = requiredPerms.toOct(4)
let newPermsRes = setPermissions(dataDir, requiredPerms)
if newPermsRes.isErr():
fatal "Could not set data directory permissions",
data_dir = dataDir,
errorCode = $newPermsRes.error,
errorMsg = ioErrorMsg(newPermsRes.error),
old_permissions = currPerms.toOct(4),
new_permissions = requiredPerms.toOct(4)
return false
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else:
if (let res = secureCreatePath(dataDir); res.isErr):
fatal "Could not create data directory",
path = dataDir, err = 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}
if fileAccessible(dataDir, amask):
let cres = checkCurrentUserOnlyACL(dataDir)
if cres.isErr():
fatal "Could not check data folder's ACL",
path = dataDir, errorCode = $cres.error,
errorMsg = ioErrorMsg(cres.error)
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return false
else:
if cres.get() == false:
fatal "Data folder has insecure ACL", path = dataDir
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return false
else:
if (let res = secureCreatePath(dataDir); res.isErr):
fatal "Could not create data folder",
path = dataDir, err = ioErrorMsg(res.error), errorCode = $res.error
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return false
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else:
fatal "Unsupported operation system"
return false
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return true
proc checkSensitivePathPermissions*(dirFilePath: string): bool =
## If ``dirFilePath`` is file, then check if file has only
##
## - "(600) rwx------" permissions on Posix (Linux, MacOS, BSD)
## - current user only ACL on Windows
##
## If ``dirFilePath`` is directory, then check if directory has only
##
## - "(700) rwx------" permissions on Posix (Linux, MacOS, BSD)
## - current user only ACL on Windows
##
## Procedure returns ``true`` if directory/file is present and all required
## permissions are set.
let r1 = isDir(dirFilePath)
let r2 = isFile(dirFilePath)
if r1 or r2:
when defined(windows):
let res = checkCurrentUserOnlyACL(dirFilePath)
if res.isErr():
false
else:
if res.get() == false:
false
else:
true
else:
let requiredPermissions = if r1: 0o700 else: 0o600
let res = getPermissions(dirFilePath)
if res.isErr():
false
else:
if res.get() != requiredPermissions:
false
else:
true
else:
false
proc checkSensitiveFilePermissions*(filePath: string): bool =
## Check if ``filePath`` has only "(600) rw-------" permissions.
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## Procedure returns ``false`` if permissions are different and we can't
## correct them.
when defined(windows):
let cres = checkCurrentUserOnlyACL(filePath)
if cres.isErr():
fatal "Could not check file's ACL",
key_path = filePath, errorCode = $cres.error,
errorMsg = ioErrorMsg(cres.error)
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return false
else:
if cres.get() == false:
fatal "File has insecure permissions", key_path = filePath
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return false
else:
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let requiredPerms = 0o600
let currPermsRes = getPermissions(filePath)
if currPermsRes.isErr():
error "Could not check file permissions",
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key_path = filePath, errorCode = $currPermsRes.error,
errorMsg = ioErrorMsg(currPermsRes.error)
return false
else:
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let currPerms = currPermsRes.get()
if currPerms != requiredPerms:
warn "File has insecure permissions. Correcting them.",
key_path = filePath,
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current_permissions = currPerms.toOct(4),
required_permissions = requiredPerms.toOct(4)
let newPermsRes = setPermissions(filePath, requiredPerms)
if newPermsRes.isErr():
fatal "Could not set data directory permissions",
key_path = filePath,
errorCode = $newPermsRes.error,
errorMsg = ioErrorMsg(newPermsRes.error),
old_permissions = currPerms.toOct(4),
new_permissions = requiredPerms.toOct(4)
return false
return true
proc keyboardCreatePassword(prompt: string,
confirm: string,
allowEmpty = false): KsResult[string] =
while true:
let password =
try:
readPasswordFromStdin(prompt)
except IOError:
error "Could not read password from stdin"
return err("Could not read password from stdin")
if password.len == 0 and allowEmpty:
return ok("")
# We treat `password` as UTF-8 encoded string.
if validateUtf8(password) == -1:
if runeLen(password) < minPasswordLen:
echoP "The entered password should be at least " & $minPasswordLen &
" characters."
echo ""
continue
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elif passwordEntropy(password) < minPasswordEntropy:
echoP "The entered password has low entropy and may be easy to " &
"brute-force with automated tools. Please increase the " &
"variety of the user characters."
continue
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elif cstring(password) in mostCommonPasswords:
echoP "The entered password is too commonly used and it would be " &
"easy to brute-force with automated tools."
echo ""
continue
else:
echoP "Entered password is not valid UTF-8 string"
echo ""
continue
let confirmedPassword =
try:
readPasswordFromStdin(confirm)
except IOError:
error "Could not read password from stdin"
return err("Could not read password from stdin")
if password != confirmedPassword:
echo "Passwords don't match, please try again\n"
continue
return ok(password)
proc keyboardGetPassword[T](prompt: string, attempts: int,
pred: proc(p: string): KsResult[T] {.
gcsafe, raises: [Defect].}): KsResult[T] =
var
remainingAttempts = attempts
counter = 1
while remainingAttempts > 0:
let passphrase =
try:
readPasswordFromStdin(prompt)
except IOError:
error "Could not read password from stdin"
return
os.sleep(1000 * counter)
let res = pred(passphrase)
if res.isOk():
return res
else:
inc(counter)
dec(remainingAttempts)
err("Failed to decrypt keystore")
proc loadSecretFile*(path: string): KsResult[KeystorePass] {.
raises: [Defect].} =
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let res = readAllChars(path)
if res.isErr():
return err(ioErrorMsg(res.error()))
ok(KeystorePass.init(res.get()))
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proc loadRemoteKeystoreImpl(validatorsDir,
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keyName: string): Opt[KeystoreData] =
let keystorePath = validatorsDir / keyName / RemoteKeystoreFileName
if not(checkSensitiveFilePermissions(keystorePath)):
error "Remote keystorage file has insecure permissions",
key_path = keystorePath
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return Opt.none(KeystoreData)
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let handle =
block:
let res = openLockedFile(keystorePath)
if res.isErr():
error "Unable to lock keystore file", key_path = keystorePath,
error_msg = ioErrorMsg(res.error())
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return Opt.none(KeystoreData)
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res.get()
var success = false
defer:
if not(success):
discard handle.closeLockedFile()
let keystore =
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block:
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let gres = handle.getData(MaxKeystoreFileSize)
if gres.isErr():
error "Could not read remote keystore file", key_path = keystorePath,
error_msg = ioErrorMsg(gres.error())
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return Opt.none(KeystoreData)
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let buffer = gres.get()
let data =
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try:
parseRemoteKeystore(buffer)
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except SerializationError as e:
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error "Invalid remote keystore file", key_path = keystorePath,
error_msg = e.formatMsg(keystorePath)
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return Opt.none(KeystoreData)
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let kres = KeystoreData.init(data, handle)
if kres.isErr():
error "Invalid remote keystore file", key_path = keystorePath,
error_msg = kres.error()
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return Opt.none(KeystoreData)
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kres.get()
success = true
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Opt.some(keystore)
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proc loadLocalKeystoreImpl(validatorsDir, secretsDir, keyName: string,
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nonInteractive: bool,
cache: KeystoreCacheRef): Opt[KeystoreData] =
let
keystorePath = validatorsDir / keyName / KeystoreFileName
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passphrasePath = secretsDir / keyName
handle =
block:
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let res = openLockedFile(keystorePath)
if res.isErr():
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error "Unable to lock keystore file", key_path = keystorePath,
error_msg = ioErrorMsg(res.error())
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return Opt.none(KeystoreData)
res.get()
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var success = false
defer:
if not(success):
discard handle.closeLockedFile()
let
keystore =
block:
let gres = handle.getData(MaxKeystoreFileSize)
if gres.isErr():
error "Could not read local keystore file", key_path = keystorePath,
error_msg = ioErrorMsg(gres.error())
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return Opt.none(KeystoreData)
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let buffer = gres.get()
let data =
try:
parseKeystore(buffer)
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except SerializationError as e:
error "Invalid local keystore file", key_path = keystorePath,
error_msg = e.formatMsg(keystorePath)
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return Opt.none(KeystoreData)
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data
if fileExists(passphrasePath):
if not(checkSensitiveFilePermissions(passphrasePath)):
error "Password file has insecure permissions", key_path = keystorePath
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return Opt.none(KeystoreData)
let passphrase =
block:
let res = loadSecretFile(passphrasePath)
if res.isErr():
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error "Failed to read passphrase file", error_msg = res.error(),
path = passphrasePath
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return Opt.none(KeystoreData)
res.get()
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let res = decryptKeystore(keystore, passphrase, cache)
if res.isOk():
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success = true
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return Opt.some(KeystoreData.init(res.get(), keystore, handle))
else:
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error "Failed to decrypt keystore", key_path = keystorePath,
secure_path = passphrasePath
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return Opt.none(KeystoreData)
if nonInteractive:
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error "Unable to load validator key store. Please ensure matching " &
"passphrase exists in the secrets dir", key_path = keystorePath,
key_name = keyName, validatorsDir, secretsDir = secretsDir
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return Opt.none(KeystoreData)
let prompt = "Please enter passphrase for key \"" &
(validatorsDir / keyName) & "\": "
let res = keyboardGetPassword[ValidatorPrivKey](prompt, 3,
proc (password: string): KsResult[ValidatorPrivKey] =
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let decrypted = decryptKeystore(keystore, KeystorePass.init password,
cache)
if decrypted.isErr():
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error "Keystore decryption failed. Please try again",
keystore_path = keystorePath
decrypted
)
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if res.isErr():
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return Opt.none(KeystoreData)
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success = true
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Opt.some(KeystoreData.init(res.get(), keystore, handle))
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proc loadKeystore*(validatorsDir, secretsDir, keyName: string,
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nonInteractive: bool,
cache: KeystoreCacheRef): Opt[KeystoreData] =
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let
keystorePath = validatorsDir / keyName
localKeystorePath = keystorePath / KeystoreFileName
remoteKeystorePath = keystorePath / RemoteKeystoreFileName
if fileExists(localKeystorePath):
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loadLocalKeystoreImpl(validatorsDir, secretsDir, keyName, nonInteractive,
cache)
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elif fileExists(remoteKeystorePath):
loadRemoteKeystoreImpl(validatorsDir, keyName)
else:
error "Unable to find any keystore files", keystorePath
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Opt.none(KeystoreData)
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proc removeValidatorFiles*(validatorsDir, secretsDir, keyName: string,
kind: KeystoreKind
): KmResult[RemoveValidatorStatus] {.
raises: [Defect].} =
let
keystoreDir = validatorsDir / keyName
keystoreFile =
case kind
of KeystoreKind.Local:
keystoreDir / KeystoreFileName
of KeystoreKind.Remote:
keystoreDir / RemoteKeystoreFileName
secretFile = secretsDir / keyName
if not(dirExists(keystoreDir)):
return ok(RemoveValidatorStatus.notFound)
if not(fileExists(keystoreFile)):
return ok(RemoveValidatorStatus.notFound)
case kind
of KeystoreKind.Local:
block:
let res = io2.removeFile(keystoreFile)
if res.isErr():
return err("Could not remove keystore file")
block:
let res = io2.removeFile(secretFile)
if res.isErr() and fileExists(secretFile):
return err("Could not remove password file")
# We remove folder with all subfolders and files inside.
try:
removeDir(keystoreDir, false)
except OSError:
return err("Could not remove keystore directory")
of KeystoreKind.Remote:
block:
let res = io2.removeFile(keystoreFile)
if res.isErr():
return err("Could not remove keystore file")
# We remove folder with all subfolders and files inside.
try:
removeDir(keystoreDir, false)
except OSError:
return err("Could not remove keystore directory")
ok(RemoveValidatorStatus.deleted)
func fsName(pubkey: ValidatorPubKey|CookedPubKey): string =
"0x" & pubkey.toHex()
proc removeValidator*(pool: var ValidatorPool,
validatorsDir, secretsDir: string,
publicKey: ValidatorPubKey,
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kind: KeystoreKind): KmResult[RemoveValidatorStatus] {.
raises: [Defect].} =
let validator = pool.getValidator(publicKey).valueOr:
return ok(RemoveValidatorStatus.notFound)
if validator.kind.toKeystoreKind() != kind:
return ok(RemoveValidatorStatus.notFound)
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let cres = validator.data.handle.closeLockedFile()
if cres.isErr():
return err("Could not unlock validator keystore file")
let res = removeValidatorFiles(validatorsDir, secretsDir, publicKey.fsName, kind)
if res.isErr():
return err(res.error())
pool.removeValidator(publicKey)
ok(res.value())
proc checkKeyName*(keyName: string): bool =
const keyAlphabet = {'a'..'f', 'A'..'F', '0'..'9'}
if len(keyName) != KeyNameSize:
return false
if keyName[0] != '0' and keyName[1] != 'x':
return false
for index in 2 ..< len(keyName):
if keyName[index] notin keyAlphabet:
return false
true
proc existsKeystore*(keystoreDir: string, keyKind: KeystoreKind): bool {.
raises: [Defect].} =
case keyKind
of KeystoreKind.Local:
fileExists(keystoreDir / KeystoreFileName)
of KeystoreKind.Remote:
fileExists(keystoreDir / RemoteKeystoreFileName)
proc existsKeystore*(keystoreDir: string,
keysMask: set[KeystoreKind]): bool {.raises: [Defect].} =
if KeystoreKind.Local in keysMask:
if existsKeystore(keystoreDir, KeystoreKind.Local):
return true
if KeystoreKind.Remote in keysMask:
if existsKeystore(keystoreDir, KeystoreKind.Remote):
return true
false
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iterator listLoadableKeys*(validatorsDir, secretsDir: string,
keysMask: set[KeystoreKind]): CookedPubKey =
try:
for kind, file in walkDir(validatorsDir):
if kind == pcDir:
let
keyName = splitFile(file).name
keystoreDir = validatorsDir / keyName
if not(checkKeyName(keyName)):
# Skip folders which name do not satisfy "0x[a-fA-F0-9]{96, 96}".
continue
if not(existsKeystore(keystoreDir, keysMask)):
# Skip folder which do not satisfy `keysMask`.
continue
let kres = ValidatorPubKey.fromHex(keyName)
if kres.isErr():
# Skip folders which could not be decoded to ValidatorPubKey.
continue
let publicKey = kres.get()
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let cres = publicKey.load().valueOr:
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# Skip folders which has invalid ValidatorPubKey
# (point is not on curve).
continue
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yield cres
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except OSError as err:
error "Validator keystores directory not accessible",
path = validatorsDir, err = err.msg
quit 1
iterator listLoadableKeystores*(validatorsDir, secretsDir: string,
nonInteractive: bool,
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keysMask: set[KeystoreKind],
cache: KeystoreCacheRef): KeystoreData =
try:
for kind, file in walkDir(validatorsDir):
if kind == pcDir:
let
keyName = splitFile(file).name
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / KeystoreFileName
if not(checkKeyName(keyName)):
# Skip folders which name do not satisfy "0x[a-fA-F0-9]{96, 96}".
continue
if not(existsKeystore(keystoreDir, keysMask)):
# Skip folders which do not have keystore file inside.
continue
let
secretFile = secretsDir / keyName
keystore = loadKeystore(validatorsDir, secretsDir, keyName,
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nonInteractive, cache).valueOr:
fatal "Unable to load keystore", keystore = file
quit 1
yield keystore
except OSError as err:
error "Validator keystores directory not accessible",
path = validatorsDir, err = err.msg
quit 1
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iterator listLoadableKeystores*(config: AnyConf,
cache: KeystoreCacheRef): KeystoreData =
for el in listLoadableKeystores(config.validatorsDir(),
config.secretsDir(),
config.nonInteractive,
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{KeystoreKind.Local, KeystoreKind.Remote},
cache):
yield el
type
ValidatorConfigFileStatus* = enum
noSuchValidator
malformedConfigFile
func validatorKeystoreDir(
validatorsDir: string, pubkey: ValidatorPubKey): string =
validatorsDir / pubkey.fsName
func feeRecipientPath(validatorsDir: string,
pubkey: ValidatorPubKey): string =
validatorsDir.validatorKeystoreDir(pubkey) / FeeRecipientFilename
func gasLimitPath(validatorsDir: string,
pubkey: ValidatorPubKey): string =
validatorsDir.validatorKeystoreDir(pubkey) / GasLimitFilename
proc getSuggestedFeeRecipient*(
validatorsDir: string,
pubkey: ValidatorPubKey,
defaultFeeRecipient: Eth1Address): Result[Eth1Address, ValidatorConfigFileStatus] =
# In this particular case, an error might be by design. If the file exists,
# but doesn't load or parse that's a more urgent matter to fix. Many people
# people might prefer, however, not to override their default suggested fee
# recipients per validator, so don't warn very loudly, if at all.
if not dirExists(validatorsDir.validatorKeystoreDir(pubkey)):
return err noSuchValidator
let feeRecipientPath = validatorsDir.feeRecipientPath(pubkey)
if not fileExists(feeRecipientPath):
return ok defaultFeeRecipient
try:
# Avoid being overly flexible initially. Trailing whitespace is common
# enough it probably should be allowed, but it is reasonable to simply
# disallow the mostly-pointless flexibility of leading whitespace.
ok Eth1Address.fromHex(strutils.strip(
readFile(feeRecipientPath), leading = false, trailing = true))
except CatchableError as exc:
# Because the nonexistent validator case was already checked, any failure
# at this point is serious enough to alert the user.
warn "Failed to load fee recipient file; falling back to default fee recipient",
feeRecipientPath, defaultFeeRecipient,
err = exc.msg
err malformedConfigFile
proc getSuggestedGasLimit*(
validatorsDir: string,
pubkey: ValidatorPubKey,
defaultGasLimit: uint64): Result[uint64, ValidatorConfigFileStatus] =
# In this particular case, an error might be by design. If the file exists,
# but doesn't load or parse that's a more urgent matter to fix. Many people
# people might prefer, however, not to override their default suggested gas
# limit per validator, so don't warn very loudly, if at all.
if not dirExists(validatorsDir.validatorKeystoreDir(pubkey)):
return err noSuchValidator
let gasLimitPath = validatorsDir.gasLimitPath(pubkey)
if not fileExists(gasLimitPath):
return ok defaultGasLimit
try:
ok parseBiggestUInt(strutils.strip(
readFile(gasLimitPath), leading = false, trailing = true))
except SerializationError as e:
warn "Invalid local gas limit file", gasLimitPath,
err= e.formatMsg(gasLimitPath)
err malformedConfigFile
except CatchableError as exc:
warn "Failed to load gas limit file; falling back to default gas limit",
gasLimitPath, defaultGasLimit,
err = exc.msg
err malformedConfigFile
type
KeystoreGenerationErrorKind* = enum
FailedToCreateValidatorsDir
FailedToCreateKeystoreDir
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FailedToCreateSecretsDir
FailedToCreateSecretFile
FailedToCreateKeystoreFile
DuplicateKeystoreDir
DuplicateKeystoreFile
KeystoreGenerationError* = object
case kind*: KeystoreGenerationErrorKind
of FailedToCreateKeystoreDir,
FailedToCreateValidatorsDir,
FailedToCreateSecretsDir,
FailedToCreateSecretFile,
FailedToCreateKeystoreFile,
DuplicateKeystoreDir,
DuplicateKeystoreFile:
error*: string
proc mapErrTo*[T, E](r: Result[T, E], v: static KeystoreGenerationErrorKind):
Result[T, KeystoreGenerationError] =
r.mapErr(proc (e: E): KeystoreGenerationError =
KeystoreGenerationError(kind: v, error: $e))
proc loadNetKeystore*(keystorePath: string,
insecurePwd: Option[string]): Opt[lcrypto.PrivateKey] =
if not(checkSensitiveFilePermissions(keystorePath)):
error "Network keystorage file has insecure permissions",
key_path = keystorePath
return
let keyStore =
try:
Json.loadFile(keystorePath, NetKeystore,
requireAllFields = true,
allowUnknownFields = true)
except IOError as err:
error "Failed to read network keystore", err = err.msg,
path = keystorePath
return
except SerializationError as err:
error "Invalid network keystore", err = err.formatMsg(keystorePath)
return
if insecurePwd.isSome():
warn "Using insecure password to unlock networking key"
let decrypted = decryptNetKeystore(keyStore,
KeystorePass.init(insecurePwd.get()))
if decrypted.isOk:
return ok(decrypted.get())
else:
error "Network keystore decryption failed", key_store = keystorePath
return
else:
let prompt = "Please enter passphrase to unlock networking key: "
let res = keyboardGetPassword[lcrypto.PrivateKey](prompt, 3,
proc (password: string): KsResult[lcrypto.PrivateKey] =
let decrypted = decryptNetKeystore(keyStore, KeystorePass.init password)
if decrypted.isErr():
error "Keystore decryption failed. Please try again", keystorePath
decrypted
)
if res.isOk():
ok(res.get())
else:
return
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proc saveNetKeystore*(rng: var HmacDrbgContext, keystorePath: string,
netKey: lcrypto.PrivateKey, insecurePwd: Option[string]
): Result[void, KeystoreGenerationError] =
let password =
if insecurePwd.isSome():
warn "Using insecure password to lock networking key",
key_path = keystorePath
insecurePwd.get()
else:
let prompt = "Please enter NEW password to lock network key storage: "
let confirm = "Please confirm, network key storage password: "
? keyboardCreatePassword(prompt, confirm).mapErrTo(
FailedToCreateKeystoreFile)
let keyStore = createNetKeystore(kdfScrypt, rng, netKey,
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KeystorePass.init password)
var encodedStorage: string
try:
encodedStorage = Json.encode(keyStore)
except SerializationError as exc:
error "Could not serialize network key storage", key_path = keystorePath
return err(KeystoreGenerationError(
kind: FailedToCreateKeystoreFile, error: exc.msg))
let res = secureWriteFile(keystorePath, encodedStorage)
if res.isOk():
ok()
else:
error "Could not write to network key storage file",
key_path = keystorePath
res.mapErrTo(FailedToCreateKeystoreFile)
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proc createLocalValidatorFiles*(
secretsDir, validatorsDir, keystoreDir,
secretFile, passwordAsString, keystoreFile,
encodedStorage: string
): Result[void, KeystoreGenerationError] {.raises: [Defect].} =
var
success = false # becomes true when everything is created successfully
cleanupSecretsDir = true # becomes false if secretsDir already existed
cleanupValidatorsDir = true # becomes false if validatorsDir already existed
# secretsDir:
let secretsDirExisted: bool = dirExists(secretsDir)
if not(secretsDirExisted):
? secureCreatePath(secretsDir).mapErrTo(FailedToCreateSecretsDir)
defer:
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if not (success or secretsDirExisted):
discard io2.removeDir(secretsDir)
# validatorsDir:
let validatorsDirExisted: bool = dirExists(validatorsDir)
if not(validatorsDirExisted):
? secureCreatePath(validatorsDir).mapErrTo(FailedToCreateValidatorsDir)
defer:
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if not (success or validatorsDirExisted):
discard io2.removeDir(validatorsDir)
# keystoreDir:
? secureCreatePath(keystoreDir).mapErrTo(FailedToCreateKeystoreDir)
defer:
if not success:
discard io2.removeDir(keystoreDir)
# secretFile:
? secureWriteFile(secretFile,
passwordAsString).mapErrTo(FailedToCreateSecretFile)
defer:
if not success:
discard io2.removeFile(secretFile)
# keystoreFile:
? secureWriteFile(keystoreFile,
encodedStorage).mapErrTo(FailedToCreateKeystoreFile)
success = true
ok()
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proc createLockedLocalValidatorFiles*(
secretsDir, validatorsDir, keystoreDir,
secretFile, passwordAsString, keystoreFile,
encodedStorage: string
): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
var
success = false # becomes true when everything is created successfully
cleanupSecretsDir = true # becomes false if secretsDir already existed
cleanupValidatorsDir = true # becomes false if validatorsDir already existed
# secretsDir:
let secretsDirExisted: bool = dirExists(secretsDir)
if not(secretsDirExisted):
? secureCreatePath(secretsDir).mapErrTo(FailedToCreateSecretsDir)
defer:
if not (success or secretsDirExisted):
discard io2.removeDir(secretsDir)
# validatorsDir:
let validatorsDirExisted: bool = dirExists(validatorsDir)
if not(validatorsDirExisted):
? secureCreatePath(validatorsDir).mapErrTo(FailedToCreateValidatorsDir)
defer:
if not (success or validatorsDirExisted):
discard io2.removeDir(validatorsDir)
# keystoreDir:
? secureCreatePath(keystoreDir).mapErrTo(FailedToCreateKeystoreDir)
defer:
if not success:
discard io2.removeDir(keystoreDir)
# secretFile:
? secureWriteFile(secretFile,
passwordAsString).mapErrTo(FailedToCreateSecretFile)
defer:
if not success:
discard io2.removeFile(secretFile)
# keystoreFile:
let lock =
? secureWriteLockedFile(keystoreFile,
encodedStorage).mapErrTo(FailedToCreateKeystoreFile)
success = true
ok(lock)
proc createRemoteValidatorFiles*(
validatorsDir, keystoreDir, keystoreFile, encodedStorage: string
): Result[void, KeystoreGenerationError] {.raises: [Defect].} =
var
success = false # becomes true when everything is created successfully
# validatorsDir:
let validatorsDirExisted: bool = dirExists(validatorsDir)
if not(validatorsDirExisted):
? secureCreatePath(validatorsDir).mapErrTo(FailedToCreateValidatorsDir)
defer:
if not (success or validatorsDirExisted):
discard io2.removeDir(validatorsDir)
# keystoreDir:
? secureCreatePath(keystoreDir).mapErrTo(FailedToCreateKeystoreDir)
defer:
if not success:
discard io2.removeDir(keystoreDir)
# keystoreFile:
? secureWriteFile(keystoreFile,
encodedStorage).mapErrTo(FailedToCreateKeystoreFile)
success = true
ok()
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proc createLockedRemoteValidatorFiles*(
validatorsDir, keystoreDir, keystoreFile, encodedStorage: string
): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
var
success = false # becomes true when everything is created successfully
# validatorsDir:
let validatorsDirExisted: bool = dirExists(validatorsDir)
if not(validatorsDirExisted):
? secureCreatePath(validatorsDir).mapErrTo(FailedToCreateValidatorsDir)
defer:
if not (success or validatorsDirExisted):
discard io2.removeDir(validatorsDir)
# keystoreDir:
? secureCreatePath(keystoreDir).mapErrTo(FailedToCreateKeystoreDir)
defer:
if not success:
discard io2.removeDir(keystoreDir)
# keystoreFile:
let lock = ? secureWriteLockedFile(
keystoreFile, encodedStorage).mapErrTo(FailedToCreateKeystoreFile)
success = true
ok(lock)
proc saveKeystore*(
rng: var HmacDrbgContext,
validatorsDir, secretsDir: string,
signingKey: ValidatorPrivKey,
signingPubKey: CookedPubKey,
signingKeyPath: KeyPath,
password: string,
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salt: openArray[byte] = @[],
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mode = Secure
): Result[void, KeystoreGenerationError] {.raises: [Defect].} =
let
keypass = KeystorePass.init(password)
keyName = signingPubKey.fsName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / KeystoreFileName
if dirExists(keystoreDir):
return err(KeystoreGenerationError(kind: DuplicateKeystoreDir,
error: "Keystore directory already exists"))
if fileExists(keystoreFile):
return err(KeystoreGenerationError(kind: DuplicateKeystoreFile,
error: "Keystore file already exists"))
let keyStore = createKeystore(kdfPbkdf2, rng, signingKey,
keypass, signingKeyPath,
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mode = mode, salt = salt)
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let encodedStorage =
try:
Json.encode(keyStore)
except SerializationError as e:
error "Could not serialize keystorage", key_path = keystoreFile
return err(KeystoreGenerationError(
kind: FailedToCreateKeystoreFile, error: e.msg))
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? createLocalValidatorFiles(secretsDir, validatorsDir,
keystoreDir,
secretsDir / keyName, keypass.str,
keystoreFile, encodedStorage)
ok()
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proc saveLockedKeystore*(
rng: var HmacDrbgContext,
validatorsDir, secretsDir: string,
signingKey: ValidatorPrivKey,
signingPubKey: CookedPubKey,
signingKeyPath: KeyPath,
password: string,
mode = Secure
): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
let
keypass = KeystorePass.init(password)
keyName = signingPubKey.fsName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / KeystoreFileName
if dirExists(keystoreDir):
return err(KeystoreGenerationError(kind: DuplicateKeystoreDir,
error: "Keystore directory already exists"))
if fileExists(keystoreFile):
return err(KeystoreGenerationError(kind: DuplicateKeystoreFile,
error: "Keystore file already exists"))
let keyStore = createKeystore(kdfPbkdf2, rng, signingKey,
keypass, signingKeyPath,
mode = mode)
let encodedStorage =
try:
Json.encode(keyStore)
except SerializationError as e:
error "Could not serialize keystorage", key_path = keystoreFile
return err(KeystoreGenerationError(
kind: FailedToCreateKeystoreFile, error: e.msg))
let lock = ? createLockedLocalValidatorFiles(secretsDir, validatorsDir,
keystoreDir,
secretsDir / keyName,
keypass.str,
keystoreFile, encodedStorage)
ok(lock)
proc saveKeystore*(
validatorsDir: string,
publicKey: ValidatorPubKey,
urls: seq[RemoteSignerInfo],
threshold: uint32,
flags: set[RemoteKeystoreFlag] = {},
remoteType = RemoteSignerType.Web3Signer,
desc = ""
): Result[void, KeystoreGenerationError] {.raises: [Defect].} =
let
keyName = publicKey.fsName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / RemoteKeystoreFileName
keystoreDesc = if len(desc) == 0: none[string]() else: some(desc)
keyStore = RemoteKeystore(
version: 2'u64,
description: keystoreDesc,
remoteType: remoteType,
pubkey: publicKey,
threshold: threshold,
remotes: urls,
flags: flags)
if dirExists(keystoreDir):
return err(KeystoreGenerationError(kind: DuplicateKeystoreDir,
error: "Keystore directory already exists"))
if fileExists(keystoreFile):
return err(KeystoreGenerationError(kind: DuplicateKeystoreFile,
error: "Keystore file already exists"))
let encodedStorage =
try:
Json.encode(keyStore)
except SerializationError as exc:
error "Could not serialize keystorage", key_path = keystoreFile
return err(KeystoreGenerationError(
kind: FailedToCreateKeystoreFile, error: exc.msg))
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? createRemoteValidatorFiles(validatorsDir, keystoreDir, keystoreFile,
encodedStorage)
ok()
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proc saveLockedKeystore*(
validatorsDir: string,
publicKey: ValidatorPubKey,
urls: seq[RemoteSignerInfo],
threshold: uint32,
flags: set[RemoteKeystoreFlag] = {},
remoteType = RemoteSignerType.Web3Signer,
desc = ""
): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
let
keyName = publicKey.fsName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / RemoteKeystoreFileName
keystoreDesc = if len(desc) == 0: none[string]() else: some(desc)
keyStore = RemoteKeystore(
version: 2'u64,
description: keystoreDesc,
remoteType: remoteType,
pubkey: publicKey,
threshold: threshold,
remotes: urls,
flags: flags)
if dirExists(keystoreDir):
return err(KeystoreGenerationError(kind: DuplicateKeystoreDir,
error: "Keystore directory already exists"))
if fileExists(keystoreFile):
return err(KeystoreGenerationError(kind: DuplicateKeystoreFile,
error: "Keystore file already exists"))
let encodedStorage =
try:
Json.encode(keyStore)
except SerializationError as exc:
error "Could not serialize keystorage", key_path = keystoreFile
return err(KeystoreGenerationError(
kind: FailedToCreateKeystoreFile, error: exc.msg))
let lock = ? createLockedRemoteValidatorFiles(validatorsDir, keystoreDir,
keystoreFile, encodedStorage)
ok(lock)
proc saveKeystore*(
validatorsDir: string,
publicKey: ValidatorPubKey,
url: HttpHostUri
): Result[void, KeystoreGenerationError] {.raises: [Defect].} =
let remoteInfo = RemoteSignerInfo(url: url, id: 0)
saveKeystore(validatorsDir, publicKey, @[remoteInfo], 1)
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proc saveLockedKeystore*(
validatorsDir: string,
publicKey: ValidatorPubKey,
url: HttpHostUri
): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
let remoteInfo = RemoteSignerInfo(url: url, id: 0)
saveLockedKeystore(validatorsDir, publicKey, @[remoteInfo], 1)
proc importKeystore*(pool: var ValidatorPool,
validatorsDir: string,
keystore: RemoteKeystore): ImportResult[KeystoreData]
{.raises: [Defect].} =
let
publicKey = keystore.pubkey
keyName = publicKey.fsName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / RemoteKeystoreFileName
# We check `publicKey`.
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let cookedKey = publicKey.load().valueOr:
return err(
AddValidatorFailure.init(AddValidatorStatus.failed,
"Invalid validator's public key"))
# We check `publicKey` in memory storage first.
if publicKey in pool:
return err(AddValidatorFailure.init(AddValidatorStatus.existingArtifacts))
# We check `publicKey` in filesystem.
if existsKeystore(keystoreDir, {KeystoreKind.Local, KeystoreKind.Remote}):
return err(AddValidatorFailure.init(AddValidatorStatus.existingArtifacts))
let res = saveLockedKeystore(validatorsDir, publicKey, keystore.remotes,
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keystore.threshold)
if res.isErr():
return err(AddValidatorFailure.init(AddValidatorStatus.failed,
$res.error()))
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ok(KeystoreData.init(cookedKey, keystore.remotes, keystore.threshold,
res.get()))
proc importKeystore*(pool: var ValidatorPool,
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rng: var HmacDrbgContext,
validatorsDir, secretsDir: string,
keystore: Keystore,
password: string): ImportResult[KeystoreData] {.
raises: [Defect].} =
let keypass = KeystorePass.init(password)
let privateKey =
block:
let res = decryptKeystore(keystore, keypass)
if res.isOk():
res.get()
else:
return err(
AddValidatorFailure.init(AddValidatorStatus.failed, res.error()))
let
publicKey = privateKey.toPubKey()
keyName = publicKey.fsName
secretFile = secretsDir / keyName
keystoreDir = validatorsDir / keyName
keystoreFile = keystoreDir / KeystoreFileName
# We check `publicKey` in memory storage first.
if publicKey.toPubKey() in pool:
return err(AddValidatorFailure.init(AddValidatorStatus.existingArtifacts))
# We check `publicKey` in filesystem.
if existsKeystore(keystoreDir, {KeystoreKind.Local, KeystoreKind.Remote}):
return err(AddValidatorFailure.init(AddValidatorStatus.existingArtifacts))
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let res = saveLockedKeystore(rng, validatorsDir, secretsDir,
privateKey, publicKey, keystore.path, password)
if res.isErr():
return err(AddValidatorFailure.init(AddValidatorStatus.failed,
$res.error()))
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ok(KeystoreData.init(privateKey, keystore, res.get()))
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proc generateDistributedStore*(rng: var HmacDrbgContext,
shares: seq[SecretShare],
pubKey: ValidatorPubKey,
validatorIdx: Natural,
shareSecretsDir: string,
shareValidatorDir: string,
remoteValidatorDir: string,
remoteSignersUrls: seq[string],
threshold: uint32,
mode = KeystoreMode.Secure): Result[void, KeystoreGenerationError] =
var signers: seq[RemoteSignerInfo]
for idx, share in shares:
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var password = KeystorePass.init ncrutils.toHex(rng.generateBytes(32))
# remote signer shares
defer: burnMem(password)
? saveKeystore(rng,
shareValidatorDir / $share.id,
shareSecretsDir / $share.id,
Support for driving multiple EL nodes from a single Nimbus BN (#4465) * Support for driving multiple EL nodes from a single Nimbus BN Full list of changes: * Eth1Monitor has been renamed to ELManager to match its current responsibilities better. * The ELManager is no longer optional in the code (it won't have a nil value under any circumstances). * The support for subscribing for headers was removed as it only worked with WebSockets and contributed significant complexity while bringing only a very minor advantage. * The `--web3-url` parameter has been deprecated in favor of a new `--el` parameter. The new parameter has a reasonable default value and supports specifying a different JWT for each connection. Each connection can also be configured with a different set of responsibilities (e.g. download deposits, validate blocks and/or produce blocks). On the command-line, these properties can be configured through URL properties stored in the #anchor part of the URL. In TOML files, they come with a very natural syntax (althrough the URL scheme is also supported). * The previously scattered EL-related state and logic is now moved to `eth1_monitor.nim` (this module will be renamed to `el_manager.nim` in a follow-up commit). State is assigned properly either to the `ELManager` or the to individual `ELConnection` objects where appropriate. The ELManager executes all Engine API requests against all attached EL nodes, in parallel. It compares their results and if there is a disagreement regarding the validity of a certain payload, this is detected and the beacon node is protected from publishing a block with a potential execution layer consensus bug in it. The BN provides metrics per EL node for the number of successful or failed requests for each type Engine API requests. If an EL node goes offline and connectivity is resoted later, we report the problem and the remedy in edge-triggered fashion. * More progress towards implementing Deneb block production in the VC and comparing the value of blocks produced by the EL and the builder API. * Adds a Makefile target for the zhejiang testnet
2023-03-05 01:40:21 +00:00
share.key,
share.key.toPubKey,
makeKeyPath(validatorIdx, signingKeyKind),
Support for driving multiple EL nodes from a single Nimbus BN (#4465) * Support for driving multiple EL nodes from a single Nimbus BN Full list of changes: * Eth1Monitor has been renamed to ELManager to match its current responsibilities better. * The ELManager is no longer optional in the code (it won't have a nil value under any circumstances). * The support for subscribing for headers was removed as it only worked with WebSockets and contributed significant complexity while bringing only a very minor advantage. * The `--web3-url` parameter has been deprecated in favor of a new `--el` parameter. The new parameter has a reasonable default value and supports specifying a different JWT for each connection. Each connection can also be configured with a different set of responsibilities (e.g. download deposits, validate blocks and/or produce blocks). On the command-line, these properties can be configured through URL properties stored in the #anchor part of the URL. In TOML files, they come with a very natural syntax (althrough the URL scheme is also supported). * The previously scattered EL-related state and logic is now moved to `eth1_monitor.nim` (this module will be renamed to `el_manager.nim` in a follow-up commit). State is assigned properly either to the `ELManager` or the to individual `ELConnection` objects where appropriate. The ELManager executes all Engine API requests against all attached EL nodes, in parallel. It compares their results and if there is a disagreement regarding the validity of a certain payload, this is detected and the beacon node is protected from publishing a block with a potential execution layer consensus bug in it. The BN provides metrics per EL node for the number of successful or failed requests for each type Engine API requests. If an EL node goes offline and connectivity is resoted later, we report the problem and the remedy in edge-triggered fashion. * More progress towards implementing Deneb block production in the VC and comparing the value of blocks produced by the EL and the builder API. * Adds a Makefile target for the zhejiang testnet
2023-03-05 01:40:21 +00:00
password.str,
@[],
mode)
signers.add RemoteSignerInfo(
url: HttpHostUri(parseUri(remoteSignersUrls[idx])),
id: share.id,
pubkey: share.key.toPubKey.toPubKey)
# actual validator
saveKeystore(remoteValidatorDir, pubKey, signers, threshold)
func validatorKeystoreDir(host: KeymanagerHost,
pubkey: ValidatorPubKey): string =
host.validatorsDir.validatorKeystoreDir(pubkey)
func feeRecipientPath*(host: KeymanagerHost,
pubkey: ValidatorPubKey): string =
host.validatorsDir.feeRecipientPath(pubkey)
func gasLimitPath*(host: KeymanagerHost,
pubkey: ValidatorPubKey): string =
host.validatorsDir.gasLimitPath(pubkey)
proc removeFeeRecipientFile*(host: KeymanagerHost,
pubkey: ValidatorPubKey): Result[void, string] =
let path = host.feeRecipientPath(pubkey)
if fileExists(path):
let res = io2.removeFile(path)
if res.isErr:
return err res.error.ioErrorMsg
return ok()
proc removeGasLimitFile*(host: KeymanagerHost,
pubkey: ValidatorPubKey): Result[void, string] =
let path = host.gasLimitPath(pubkey)
if fileExists(path):
let res = io2.removeFile(path)
if res.isErr:
return err res.error.ioErrorMsg
return ok()
proc setFeeRecipient*(host: KeymanagerHost, pubkey: ValidatorPubKey, feeRecipient: Eth1Address): Result[void, string] =
let validatorKeystoreDir = host.validatorKeystoreDir(pubkey)
? secureCreatePath(validatorKeystoreDir).mapErr(proc(e: auto): string =
"Could not create wallet directory [" & validatorKeystoreDir & "]: " & $e)
io2.writeFile(validatorKeystoreDir / FeeRecipientFilename, $feeRecipient)
.mapErr(proc(e: auto): string = "Failed to write fee recipient file: " & $e)
proc setGasLimit*(host: KeymanagerHost,
pubkey: ValidatorPubKey,
gasLimit: uint64): Result[void, string] =
let validatorKeystoreDir = host.validatorKeystoreDir(pubkey)
? secureCreatePath(validatorKeystoreDir).mapErr(proc(e: auto): string =
"Could not create wallet directory [" & validatorKeystoreDir & "]: " & $e)
io2.writeFile(validatorKeystoreDir / GasLimitFilename, $gasLimit)
.mapErr(proc(e: auto): string = "Failed to write gas limit file: " & $e)
proc getSuggestedFeeRecipient*(
host: KeymanagerHost,
pubkey: ValidatorPubKey): Result[Eth1Address, ValidatorConfigFileStatus] =
host.validatorsDir.getSuggestedFeeRecipient(pubkey, host.defaultFeeRecipient)
proc getSuggestedGasLimit*(
host: KeymanagerHost,
pubkey: ValidatorPubKey): Result[uint64, ValidatorConfigFileStatus] =
host.validatorsDir.getSuggestedGasLimit(pubkey, host.defaultGasLimit)
proc addValidator*(host: KeymanagerHost, keystore: KeystoreData) =
let
feeRecipient = host.getSuggestedFeeRecipient(keystore.pubkey).valueOr(
host.defaultFeeRecipient)
gasLimit = host.getSuggestedGasLimit(keystore.pubkey).valueOr(
host.defaultGasLimit)
v = host.validatorPool[].addValidator(keystore, feeRecipient, gasLimit)
if not isNil(host.getValidatorAndIdxFn):
let data = host.getValidatorAndIdxFn(keystore.pubkey)
v.updateValidator(data)
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
2021-07-12 13:01:38 +00:00
proc generateDeposits*(cfg: RuntimeConfig,
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rng: var HmacDrbgContext,
seed: KeySeed,
firstValidatorIdx, totalNewValidators: int,
validatorsDir: string,
secretsDir: string,
remoteSignersUrls: seq[string] = @[],
threshold: uint32 = 1,
remoteValidatorsCount: uint32 = 0,
mode = Secure): Result[seq[DepositData],
KeystoreGenerationError] =
var deposits: seq[DepositData]
notice "Generating deposits", totalNewValidators, validatorsDir, secretsDir
# We'll reuse a single variable here to make the secret
# scrubbing (burnMem) easier to handle:
var baseKey = deriveMasterKey(seed)
defer: burnMem(baseKey)
baseKey = deriveChildKey(baseKey, baseKeyPath)
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var
salt = rng.generateKeystoreSalt()
password = KeystorePass.init ncrutils.toHex(rng.generateBytes(32))
defer:
burnMem(salt)
burnMem(password)
let localValidatorsCount = totalNewValidators - int(remoteValidatorsCount)
for i in 0 ..< localValidatorsCount:
let validatorIdx = firstValidatorIdx + i
# We'll reuse a single variable here to make the secret
# scrubbing (burnMem) easier to handle:
var derivedKey = baseKey
defer: burnMem(derivedKey)
derivedKey = deriveChildKey(derivedKey, validatorIdx)
derivedKey = deriveChildKey(derivedKey, 0) # This is witdrawal key
let withdrawalPubKey = derivedKey.toPubKey
derivedKey = deriveChildKey(derivedKey, 0) # This is the signing key
let signingPubKey = derivedKey.toPubKey
? saveKeystore(rng, validatorsDir, secretsDir,
derivedKey, signingPubKey,
makeKeyPath(validatorIdx, signingKeyKind), password.str,
2023-02-16 17:25:48 +00:00
salt, mode)
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
2021-07-12 13:01:38 +00:00
deposits.add prepareDeposit(
cfg, withdrawalPubKey, derivedKey, signingPubKey)
for i in 0 ..< remoteValidatorsCount:
let validatorIdx = int(firstValidatorIdx) + localValidatorsCount + int(i)
# We'll reuse a single variable here to make the secret
# scrubbing (burnMem) easier to handle:
var derivedKey = baseKey
defer: burnMem(derivedKey)
derivedKey = deriveChildKey(derivedKey, validatorIdx)
derivedKey = deriveChildKey(derivedKey, 0) # This is witdrawal key
let withdrawalPubKey = derivedKey.toPubKey
derivedKey = deriveChildKey(derivedKey, 0) # This is the signing key
let signingPubKey = derivedKey.toPubKey
let sharesCount = uint32 len(remoteSignersUrls)
let shares = generateSecretShares(derivedKey, rng, threshold, sharesCount)
if shares.isErr():
error "Failed to generate distributed key: ", threshold, sharesCount
continue
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? generateDistributedStore(rng,
shares.get,
signingPubKey.toPubKey,
validatorIdx,
secretsDir & "_shares",
validatorsDir & "_shares",
validatorsDir,
remoteSignersUrls,
threshold,
mode)
deposits.add prepareDeposit(
cfg, withdrawalPubKey, derivedKey, signingPubKey)
ok deposits
proc saveWallet*(wallet: Wallet, outWalletPath: string): Result[void, string] =
let walletDir = splitFile(outWalletPath).dir
var encodedWallet: string
try:
encodedWallet = Json.encode(wallet, pretty = true)
except SerializationError:
return err("Could not serialize wallet")
? secureCreatePath(walletDir).mapErr(proc(e: auto): string =
"Could not create wallet directory [" & walletDir & "]: " & $e)
? secureWriteFile(outWalletPath, encodedWallet).mapErr(proc(e: auto): string =
"Could not write wallet to file [" & outWalletPath & "]: " & $e)
ok()
proc saveWallet*(wallet: WalletPathPair): Result[void, string] =
saveWallet(wallet.wallet, wallet.path)
proc readPasswordInput(prompt: string, password: var string): bool =
try:
when defined(windows):
# readPasswordFromStdin() on Windows always returns `false`.
# https://github.com/nim-lang/Nim/issues/15207
discard readPasswordFromStdin(prompt, password)
true
else:
readPasswordFromStdin(prompt, password)
except IOError:
false
proc setStyleNoError(styles: set[Style]) =
when defined(windows):
try: stdout.setStyle(styles)
except: discard
else:
try: stdout.setStyle(styles)
except IOError, ValueError: discard
proc setForegroundColorNoError(color: ForegroundColor) =
when defined(windows):
try: stdout.setForegroundColor(color)
except: discard
else:
try: stdout.setForegroundColor(color)
except IOError, ValueError: discard
proc resetAttributesNoError() =
when defined(windows):
try: stdout.resetAttributes()
except: discard
else:
try: stdout.resetAttributes()
except IOError: discard
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proc importKeystoreFromFile*(
fileName: string
): Result[ValidatorPrivKey, string] =
var password: string # TODO consider using a SecretString type
defer: burnMem(password)
let
data = readAllChars(fileName).valueOr:
return err("Unable to read keystore file [" & ioErrorMsg(error) & "]")
keystore =
try:
parseKeystore(data)
except SerializationError as e:
return err("Invalid keystore file format [" &
e.formatMsg(fileName) & "]")
var firstDecryptionAttempt = true
while true:
var secret: seq[byte]
let status = decryptCryptoField(keystore.crypto,
KeystorePass.init(password),
secret)
case status
of DecryptionStatus.Success:
let privateKey = ValidatorPrivKey.fromRaw(secret).valueOr:
return err("Keystore holds invalid private key [" & $error & "]")
return ok(privateKey)
of DecryptionStatus.InvalidKeystore:
return err("Invalid keystore format")
of DecryptionStatus.InvalidPassword:
if firstDecryptionAttempt:
try:
const msg = "Please enter the password for decrypting '$1'"
echo msg % [fileName]
except ValueError:
raiseAssert "The format string above is correct"
firstDecryptionAttempt = false
else:
echo "The entered password was incorrect. Please try again."
if not(readPasswordInput("Password: ", password)):
echo "System error while entering password. Please try again."
if len(password) == 0: break
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proc importKeystoresFromDir*(rng: var HmacDrbgContext, meth: ImportMethod,
importedDir, validatorsDir, secretsDir: string) =
var password: string # TODO consider using a SecretString type
defer: burnMem(password)
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var (singleSaltPassword, singleSaltSalt) =
case meth
of ImportMethod.Normal:
var defaultSeq: seq[byte]
(KeystorePass.init(""), defaultSeq)
of ImportMethod.SingleSalt:
(KeystorePass.init(ncrutils.toHex(rng.generateBytes(32))),
rng.generateBytes(32))
defer:
burnMem(singleSaltPassword)
burnMem(singleSaltSalt)
try:
for file in walkDirRec(importedDir):
2020-10-20 13:01:21 +00:00
let filenameParts = splitFile(file)
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,
requireAllFields = true,
allowUnknownFields = true)
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
2021-11-30 01:20:21 +00:00
of DecryptionStatus.Success:
let privKey = ValidatorPrivKey.fromRaw(secret)
if privKey.isOk:
let pubkey = privKey.value.toPubKey
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var (password, salt) =
case meth
of ImportMethod.Normal:
var defaultSeq: seq[byte]
(KeystorePass.init ncrutils.toHex(rng.generateBytes(32)),
defaultSeq)
of ImportMethod.SingleSalt:
(singleSaltPassword, singleSaltSalt)
defer:
burnMem(password)
burnMem(salt)
let status = saveKeystore(rng, validatorsDir, secretsDir,
privKey.value, pubkey,
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keystore.path, password.str,
salt)
if status.isOk:
notice "Keystore imported", file
else:
error "Failed to import keystore",
file, validatorsDir, secretsDir, err = status.error
else:
error "Imported keystore holds invalid key", file, err = privKey.error
break
2021-11-30 01:20:21 +00:00
of DecryptionStatus.InvalidKeystore:
warn "Invalid keystore", file
break
2021-11-30 01:20:21 +00:00
of DecryptionStatus.InvalidPassword:
if firstDecryptionAttempt:
try:
2020-08-02 18:47:15 +00:00
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"
2022-06-21 08:29:16 +00:00
proc pickPasswordAndSaveWallet(rng: var HmacDrbgContext,
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 ""
2020-10-05 15:27:05 +00:00
var password =
block:
let prompt = "Please enter a password: "
let confirm = "Please repeat the password: "
? keyboardCreatePassword(prompt, confirm)
2020-10-01 19:18:56 +00:00
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:
2022-12-06 12:40:13 +00:00
let 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):
2020-10-12 19:58:09 +00:00
proc clearScreen =
discard execShellCmd("cls")
else:
template clearScreen =
echo "\e[1;1H\e[2J\e[3J"
proc createWalletInteractively*(
2022-06-21 08:29:16 +00:00
rng: var HmacDrbgContext,
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:
2020-10-12 19:58:09 +00:00
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. " &
2022-03-14 12:50:23 +00:00
"If you don't 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)
2022-06-21 08:29:16 +00:00
proc restoreWalletInteractively*(rng: var HmacDrbgContext,
config: BeaconNodeConf) =
var
enteredMnemonic: string
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
2021-11-30 01:20:21 +00:00
of DecryptionStatus.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)
2020-10-01 19:18:56 +00:00
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,
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
2021-07-12 13:01:38 +00:00
cfg: RuntimeConfig, 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),
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
2021-07-12 13:01:38 +00:00
fork_version: cfg.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)