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account.go
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account.go
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package wallet
import (
"crypto/ecdsa"
"encoding/hex"
"fmt"
"github.com/0xPolygon/polygon-edge/bls"
"github.com/0xPolygon/polygon-edge/secrets"
"github.com/0xPolygon/polygon-edge/types"
"github.com/umbracle/ethgo/wallet"
)
// Account is an account for key signatures
type Account struct {
Ecdsa *wallet.Key
Bls *bls.PrivateKey
}
// GenerateAccount generates a new random account
func GenerateAccount() (*Account, error) {
key, err := wallet.GenerateKey()
if err != nil {
return nil, fmt.Errorf("cannot generate key. error: %w", err)
}
blsKey, err := bls.GenerateBlsKey()
if err != nil {
return nil, fmt.Errorf("cannot generate bls key. error: %w", err)
}
return &Account{
Ecdsa: key,
Bls: blsKey,
}, nil
}
// NewAccountFromSecret creates new account by using provided secretsManager
func NewAccountFromSecret(secretsManager secrets.SecretsManager) (*Account, error) {
ecdsaKey, err := GetEcdsaFromSecret(secretsManager)
if err != nil {
return nil, err
}
blsKey, err := GetBlsFromSecret(secretsManager)
if err != nil {
return nil, err
}
return &Account{Ecdsa: ecdsaKey, Bls: blsKey}, nil
}
// GetEcdsaFromSecret retrieves validator(ECDSA) key by using provided secretsManager
func GetEcdsaFromSecret(secretsManager secrets.SecretsManager) (*wallet.Key, error) {
encodedKey, err := secretsManager.GetSecret(secrets.ValidatorKey)
if err != nil {
return nil, fmt.Errorf("failed to retrieve ecdsa key: %w", err)
}
ecdsaRaw, err := hex.DecodeString(string(encodedKey))
if err != nil {
return nil, fmt.Errorf("failed to retrieve ecdsa key: %w", err)
}
key, err := wallet.NewWalletFromPrivKey(ecdsaRaw)
if err != nil {
return nil, fmt.Errorf("failed to retrieve ecdsa key: %w", err)
}
return key, nil
}
// GetBlsFromSecret retrieves BLS key by using provided secretsManager
func GetBlsFromSecret(secretsManager secrets.SecretsManager) (*bls.PrivateKey, error) {
encodedKey, err := secretsManager.GetSecret(secrets.ValidatorBLSKey)
if err != nil {
return nil, fmt.Errorf("failed to retrieve bls key: %w", err)
}
blsKey, err := bls.UnmarshalPrivateKey(encodedKey)
if err != nil {
return nil, fmt.Errorf("failed to retrieve bls key: %w", err)
}
return blsKey, nil
}
// Save persists ECDSA and BLS private keys to the SecretsManager
func (a *Account) Save(secretsManager secrets.SecretsManager) (err error) {
var (
ecdsaRaw []byte
blsRaw []byte
)
// get serialized ecdsa private key
if ecdsaRaw, err = a.Ecdsa.MarshallPrivateKey(); err != nil {
return err
}
if err = secretsManager.SetSecret(secrets.ValidatorKey, []byte(hex.EncodeToString(ecdsaRaw))); err != nil {
return err
}
// get serialized bls private key
if blsRaw, err = a.Bls.Marshal(); err != nil {
return err
}
return secretsManager.SetSecret(secrets.ValidatorBLSKey, blsRaw)
}
func (a *Account) GetEcdsaPrivateKey() (*ecdsa.PrivateKey, error) {
ecdsaRaw, err := a.Ecdsa.MarshallPrivateKey()
if err != nil {
return nil, err
}
return wallet.ParsePrivateKey(ecdsaRaw)
}
func (a Account) Address() types.Address {
return types.Address(a.Ecdsa.Address())
}