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