package web3provider import ( "fmt" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" signercore "github.com/ethereum/go-ethereum/signer/core/apitypes" "github.com/status-im/status-go/eth-node/crypto" "github.com/status-im/status-go/eth-node/types" "github.com/status-im/status-go/services/rpcfilters" "github.com/status-im/status-go/services/typeddata" "github.com/status-im/status-go/transactions" ) // signMessage checks the pwd vs the selected account and signs a message func (api *API) signMessage(data interface{}, address string, password string) (types.HexBytes, error) { account, err := api.getVerifiedWalletAccount(address, password) if err != nil { return types.HexBytes{}, err } var dBytes []byte switch d := data.(type) { case string: dBytes = []byte(d) case []byte: dBytes = d case byte: dBytes = []byte{d} } hash := crypto.TextHash(dBytes) sig, err := crypto.Sign(hash, account.AccountKey.PrivateKey) if err != nil { return types.HexBytes{}, err } sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper return types.HexBytes(sig), err } // signTypedData accepts data and password. Gets verified account and signs typed data. func (api *API) signTypedData(typed typeddata.TypedData, address string, password string) (types.HexBytes, error) { account, err := api.getVerifiedWalletAccount(address, password) if err != nil { return types.HexBytes{}, err } chain := new(big.Int).SetUint64(api.s.config.NetworkID) sig, err := typeddata.Sign(typed, account.AccountKey.PrivateKey, chain) if err != nil { return types.HexBytes{}, err } return types.HexBytes(sig), err } // signTypedDataV4 accepts data and password. Gets verified account and signs typed data. func (api *API) signTypedDataV4(typed signercore.TypedData, address string, password string) (types.HexBytes, error) { account, err := api.getVerifiedWalletAccount(address, password) if err != nil { return types.HexBytes{}, err } chain := new(big.Int).SetUint64(api.s.config.NetworkID) sig, err := typeddata.SignTypedDataV4(typed, account.AccountKey.PrivateKey, chain) if err != nil { return types.HexBytes{}, err } return types.HexBytes(sig), err } // SendTransaction creates a new transaction and waits until it's complete. func (api *API) sendTransaction(chainID uint64, sendArgs transactions.SendTxArgs, password string, requestType string) (hash types.Hash, err error) { verifiedAccount, err := api.getVerifiedWalletAccount(sendArgs.From.String(), password) if err != nil { return hash, err } hash, err = api.s.transactor.SendTransactionWithChainID(chainID, sendArgs, verifiedAccount) if err != nil { return } go api.s.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{ Hash: common.Hash(hash), Type: requestType, From: common.Address(sendArgs.From), ChainID: chainID, }) return } func (api *API) EcRecover(data hexutil.Bytes, sig hexutil.Bytes) (types.Address, error) { if len(sig) != 65 { return types.Address{}, fmt.Errorf("signature must be 65 bytes long") } if sig[64] != 27 && sig[64] != 28 { return types.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)") } sig[64] -= 27 // Transform yellow paper V from 27/28 to 0/1 hash := crypto.TextHash(data) rpk, err := crypto.SigToPub(hash, sig) if err != nil { return types.Address{}, err } return crypto.PubkeyToAddress(*rpk), nil }