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parallel validator key generation #2

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merged 1 commit into from
Dec 30, 2021
Merged

parallel validator key generation #2

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1 change: 1 addition & 0 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ require (
github.com/tyler-smith/go-bip39 v1.1.0
github.com/wealdtech/go-eth2-util v1.7.0
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6 // indirect
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
)
1 change: 1 addition & 0 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -500,6 +500,7 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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85 changes: 53 additions & 32 deletions validators.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,14 +4,17 @@ import (
"crypto/sha256"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"sync/atomic"

"github.com/protolambda/zrnt/eth2/beacon/common"
"github.com/protolambda/zrnt/eth2/beacon/phase0"
"github.com/tyler-smith/go-bip39"
util "github.com/wealdtech/go-eth2-util"
"golang.org/x/sync/errgroup"
"gopkg.in/yaml.v3"
"os"
"path/filepath"
"strings"
)

func loadValidatorKeys(spec *common.Spec, mnemonicsConfigPath string, tranchesDir string) ([]phase0.KickstartValidatorData, error) {
Expand All @@ -20,43 +23,61 @@ func loadValidatorKeys(spec *common.Spec, mnemonicsConfigPath string, tranchesDi
return nil, err
}

var validators []phase0.KickstartValidatorData
//var validators []phase0.KickstartValidatorData
var valCount uint64 = 0
for _, mnemonicSrc := range mnemonics {
valCount += mnemonicSrc.Count
}
validators := make([]phase0.KickstartValidatorData, valCount)

for m, mnemonicSrc := range mnemonics {
var g errgroup.Group
var prog int32
fmt.Printf("processing mnemonic %d, for %d validators\n", m, mnemonicSrc.Count)
seed, err := seedFromMnemonic(mnemonicSrc.Mnemonic)
if err != nil {
return nil, fmt.Errorf("mnemonic %d is bad", m)
}
pubs := make([]string, 0, mnemonicSrc.Count)
pubs := make([]string, mnemonicSrc.Count)
for i := uint64(0); i < mnemonicSrc.Count; i++ {
if i%100 == 0 {
fmt.Printf("...validator %d/%d\n", i, mnemonicSrc.Count)
}
signingKey, err := util.PrivateKeyFromSeedAndPath(seed, validatorKeyName(i))
if err != nil {
return nil, err
}
withdrawalKey, err := util.PrivateKeyFromSeedAndPath(seed, withdrawalKeyName(i))
if err != nil {
return nil, err
}

// BLS signing key
var data phase0.KickstartValidatorData
copy(data.Pubkey[:], signingKey.PublicKey().Marshal())
pubs = append(pubs, data.Pubkey.String())

// BLS withdrawal credentials
h := sha256.New()
h.Write(withdrawalKey.PublicKey().Marshal())
copy(data.WithdrawalCredentials[:], h.Sum(nil))
data.WithdrawalCredentials[0] = common.BLS_WITHDRAWAL_PREFIX

// Max effective balance by default for activation
data.Balance = spec.MAX_EFFECTIVE_BALANCE

validators = append(validators, data)
mIdx := m
idx := i
g.Go(func() error {
signingKey, err := util.PrivateKeyFromSeedAndPath(seed, validatorKeyName(idx))
if err != nil {
return err
}
withdrawalKey, err := util.PrivateKeyFromSeedAndPath(seed, withdrawalKeyName(idx))
if err != nil {
return err
}

// BLS signing key
var data phase0.KickstartValidatorData
copy(data.Pubkey[:], signingKey.PublicKey().Marshal())
pubs[idx] = data.Pubkey.String()

// BLS withdrawal credentials
h := sha256.New()
h.Write(withdrawalKey.PublicKey().Marshal())
copy(data.WithdrawalCredentials[:], h.Sum(nil))
data.WithdrawalCredentials[0] = common.BLS_WITHDRAWAL_PREFIX

// Max effective balance by default for activation
data.Balance = spec.MAX_EFFECTIVE_BALANCE
validators[idx*uint64(mIdx+1)] = data
atomic.AddInt32(&prog, 1)
if prog%100 == 0 {
fmt.Printf("...validator %d/%d\n", prog, mnemonicSrc.Count)
}
return nil
})

}
if err := g.Wait(); err != nil {
return nil, err
}

fmt.Println("Writing pubkeys list file...")
if err := outputPubkeys(filepath.Join(tranchesDir, fmt.Sprintf("tranche_%04d.txt", m)), pubs); err != nil {
return nil, err
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