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keyUtils.go
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keyUtils.go
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package memorykeys
import (
"crypto/ecdsa"
"strings"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
var keyMap = make(map[string]*ecdsa.PrivateKey)
// GetPrivateKey get the private key mapped to the name. Generate the key if it does not exist
func GetPrivateKey(keyName string) (*ecdsa.PrivateKey, error) {
var err error
if keyMap[keyName] == nil {
keyMap[keyName], err = crypto.GenerateKey()
}
return keyMap[keyName], err
}
// GetAddress get the ethereum address tied to the key
func GetAddress(keyName string) (*common.Address, error) {
key, err := GetPrivateKey(keyName)
if err != nil {
return nil, err
}
address := crypto.PubkeyToAddress(key.PublicKey)
return &address, nil
}
// GetTransactor get a transactor for use with
func GetTransactor(keyName string) (*bind.TransactOpts, error) {
key, err := GetPrivateKey(keyName)
if err != nil {
return nil, err
}
return bind.NewKeyedTransactor(key), nil
}
// ImportPrivateKey use a specific private key (hex string) for the account
// use with caution - do not reveal keys in repos!!!
func ImportPrivateKey(keyName string, hexKey string) (*ecdsa.PrivateKey, error) {
key, err := crypto.HexToECDSA(strings.TrimPrefix(hexKey, "0x"))
if err == nil {
keyMap[keyName] = key
}
return key, err
}