nimbus-eth2/ncli/ncli_split_keystore.nim

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# beacon_chain
# Copyright (c) 2022-2023 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.
import
std/os,
confutils,
../beacon_chain/validators/keystore_management,
../beacon_chain/spec/[keystore, crypto],
../beacon_chain/conf
type
Config = object
threshold {.
desc: "Used to generate distributed keys"
name: "threshold" }: uint32
remoteSignersUrls {.
desc: "URLs of the remote signers"
name: "remote-signer" }: seq[string]
dataDir {.
defaultValue: config.defaultDataDir()
defaultValueDesc: ""
desc: "A Nimbus data directory"
name: "data-dir" }: InputDir
validatorsDirFlag* {.
desc: "A directory containing validator keystores"
name: "validators-dir" }: Option[InputDir]
secretsDirFlag* {.
desc: "A directory containing validator keystore passwords"
name: "secrets-dir" }: Option[InputDir]
key {.
desc: "A public key of the keystore"
name: "key" }: string
outDir {.
desc: "A directory to store the generated validator keystores"
name: "out-dir" }: OutDir
template valueOr(x: Option, elseBlock: untyped): untyped =
let val = x
if val.isSome:
val.get
else:
elseBlock
proc main =
let conf = load Config
if conf.threshold == 0:
error "The specified treshold must be greater than zero"
quit 1
if conf.remoteSignersUrls.len == 0:
error "Please specify at least one remote signer URL"
quit 1
if conf.threshold > conf.remoteSignersUrls.len.uint32:
error "The specified treshold must be lower or equal to the number of signers"
quit 1
let rng = HmacDrbgContext.new()
template rngCtx: untyped = rng[]
let
validatorsDir = conf.validatorsDir
secretsDir = conf.secretsDir
keystore = loadKeystore(validatorsDir,
secretsDir,
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conf.key, true, nil).valueOr:
error "Can't load keystore", validatorsDir, secretsDir, pubkey = conf.key
quit 1
signingPubKey = keystore.pubkey
sharesCount = uint32 conf.remoteSignersUrls.len
shares = generateSecretShares(keystore.privateKey,
rngCtx,
conf.threshold,
sharesCount).valueOr:
error "Failed to generate distributed key: ",
threshold = conf.threshold, sharesCount
quit 1
if not signingPubKey.confirmShares(shares, rngCtx):
error "Secret shares can't reconstruct original signature. " &
"Distributed key will not be generated."
quit 1
let
outSharesDir = conf.outDir / "shares"
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status = generateDistributedStore(
rngCtx,
shares,
signingPubKey,
0,
outSharesDir / "secrets",
outSharesDir / "validators",
string conf.outDir,
conf.remoteSignersUrls,
conf.threshold)
if status.isErr:
error "Failed to generate distributed keystore", err = status.error
quit 1
main()