nimbus-eth2/tests/mocking/mock_validator_keys.nim

66 lines
2.5 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2020 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.
# Mocking validator public and private keys
# ---------------------------------------------------------------
import
bearssl, eth/keys,
blscurve,
../../beacon_chain/spec/[datatypes, crypto, presets]
proc newKeyPair(rng: var BrHmacDrbgContext): BlsResult[tuple[pub: ValidatorPubKey, priv: ValidatorPrivKey]] =
## Generates a new public-private keypair
## This requires entropy on the system
# The input-keying-material requires 32 bytes at least for security
# The generation is deterministic and the input-keying-material
# must be protected against side-channel attacks
var ikm: array[32, byte]
brHmacDrbgGenerate(rng, ikm)
var
sk: SecretKey
pk: blscurve.PublicKey
if keyGen(ikm, pk, sk):
ok((ValidatorPubKey(blob: pk.exportRaw()), ValidatorPrivKey(sk)))
else:
err "bls: cannot generate keypair"
# this is being indexed inside "mock_deposits.nim" by a value up to `validatorCount`
# which is `num_validators` which is `MIN_GENESIS_ACTIVE_VALIDATOR_COUNT`
proc genMockPrivKeys(privkeys: var openArray[ValidatorPrivKey]) =
let rng = newRng()
for i in 0 ..< privkeys.len:
let pair = newKeyPair(rng[])[]
privkeys[i] = pair.priv
func genMockPubKeys(pubkeys: var openArray[ValidatorPubKey],
privkeys: openArray[ValidatorPrivKey]) =
for i in 0 ..< privkeys.len:
pubkeys[i] = toPubKey(privkeys[i])
# Ref array necessary to limit stack usage / binary size
var MockPrivKeys* = newSeq[ValidatorPrivKey](defaultRuntimePreset.MIN_GENESIS_ACTIVE_VALIDATOR_COUNT)
genMockPrivKeys(MockPrivKeys)
var MockPubKeys* = newSeq[ValidatorPubKey](defaultRuntimePreset.MIN_GENESIS_ACTIVE_VALIDATOR_COUNT)
genMockPubKeys(MockPubKeys, MockPrivKeys)
type MockKey = ValidatorPrivKey or ValidatorPubKey
template `[]`*[N: static int](a: array[N, MockKey], idx: ValidatorIndex): MockKey =
a[idx.int]
when isMainModule:
echo "========================================"
echo "Mock keys"
for i in 0 ..< defaultRuntimePreset.MIN_GENESIS_ACTIVE_VALIDATOR_COUNT:
echo " validator ", i
echo " seckey: ", MockPrivKeys[i].toHex()
echo " pubkey: ", MockPubKeys[i]