Add CreateAccount RPC function (#1330) (#1334)

account/address.go

@@ -0,0 +1,23 @@
+package account
+
+import (
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+func CreateAddress() (address, pubKey, privKey string, err error) {
+	key, err := crypto.GenerateKey()
+	if err != nil {
+		return "", "", "", err
+	}
+
+	privKeyBytes := crypto.FromECDSA(key)
+	pubKeyBytes := crypto.FromECDSAPub(&key.PublicKey)
+	addressBytes := crypto.PubkeyToAddress(key.PublicKey)
+
+	privKey = hexutil.Encode(privKeyBytes)
+	pubKey = hexutil.Encode(pubKeyBytes)
+	address = addressBytes.Hex()
+
+	return
+}

account/address_test.go

@@ -0,0 +1,24 @@
+package account
+
+import (
+	"testing"
+
+	gethcommon "github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCreateAddress(t *testing.T) {
+	addr, pub, priv, err := CreateAddress()
+	require.NoError(t, err)
+	require.Equal(t, gethcommon.IsHexAddress(addr), true)
+
+	privECDSA, err := crypto.HexToECDSA(priv[2:])
+	require.NoError(t, err)
+
+	pubECDSA := privECDSA.PublicKey
+	expectedPubStr := hexutil.Encode(crypto.FromECDSAPub(&pubECDSA))
+
+	require.Equal(t, expectedPubStr, pub)
+}

services/status/api.go

@@ -3,6 +3,9 @@ package status
 import (
 	"context"
 	"errors"
+	"fmt"
+
+	"github.com/status-im/status-go/account"
 )
 
 // PublicAPI represents a set of APIs from the `web3.status` namespace.
@@ -65,3 +68,19 @@ func (api *PublicAPI) Signup(context context.Context, req SignupRequest) (res Si
 
 	return
 }
+
+// CreateAddressResponse : json response returned by status_createaccount
+type CreateAddressResponse struct {
+	Address string `json:"address"`
+	Pubkey  string `json:"pubkey"`
+	Privkey string `json:"privkey"`
+}
+
+// CreateAddress is an implementation of `status_createaccount` or `web3.status.createaccount` API
+func (api *PublicAPI) CreateAddress(context context.Context) (res CreateAddressResponse, err error) {
+	if res.Address, res.Pubkey, res.Privkey, err = account.CreateAddress(); err != nil {
+		err = fmt.Errorf("could not create an address:  %v", err)
+	}
+
+	return
+}