Adds a handy conversion (#1007)

config/examples/testconfig.go

@@ -176,7 +176,7 @@ func GetConfig(configurationName string, product Product) (TestConfig, error) {
 
 func (c *TestConfig) readNetworkConfiguration() error {
 	// currently we need to read that kind of secrets only for network configuration
-	if c == nil {
+	if c.Network == nil {
 		c.Network = &ctf_config.NetworkConfig{}
 	}
 	err := c.Network.Default()

utils/conversions/conversions.go

@@ -21,6 +21,15 @@ func PrivateKeyToAddress(privateKey *ecdsa.PrivateKey) (common.Address, error) {
 	return crypto.PubkeyToAddress(*publicKeyECDSA), nil
 }
 
+// PrivateKeyHexToAddress is a handy converter for a string private key to a usable eth address
+func PrivateKeyHexToAddress(privateKeyStr string) (common.Address, error) {
+	privateKey, err := crypto.HexToECDSA(privateKeyStr)
+	if err != nil {
+		return common.Address{}, fmt.Errorf("Error converting private key to ECDSA format: %s", err)
+	}
+	return PrivateKeyToAddress(privateKey)
+}
+
 // Credit to kimxilxyong: https://github.com/ethereum/go-ethereum/issues/21221#issuecomment-802092592
 
 // EtherToWei converts an ETH float amount to wei