lotus/chain/wallet/key/key.go
raulk cdf3812e40
NV18: Filecoin EVM runtime + Actor Events + EthAccount + EAM + f4 addressing ()
Co-authored-by: Steven Allen <steven@stebalien.com>
Co-authored-by: Raul Kripalani <raulk@users.noreply.github.com>
Co-authored-by: Kevin Li <ychiaoli18@users.noreply.github.com>
Co-authored-by: vyzo <vyzo@hackzen.org>
Co-authored-by: Ian Davis <nospam@iandavis.com>
Co-authored-by: Aayush Rajasekaran <arajasek94@gmail.com>
Co-authored-by: Jiaying Wang <42981373+jennijuju@users.noreply.github.com>
Co-authored-by: Jennifer Wang <jiayingw703@gmail.com>
Co-authored-by: Geoff Stuart <geoff.vball@gmail.com>
Co-authored-by: Shrenuj Bansal <shrenuj.bansal@protocol.ai>
Co-authored-by: Shrenuj Bansal <108157875+shrenujbansal@users.noreply.github.com>
Co-authored-by: Geoff Stuart <geoffrey.stuart@protocol.ai>
Co-authored-by: Aayush Rajasekaran <aayushrajasekaran@Aayushs-MacBook-Pro.local>
Co-authored-by: ZenGround0 <5515260+ZenGround0@users.noreply.github.com>
Co-authored-by: zenground0 <ZenGround0@users.noreply.github.com>
2023-01-13 19:11:13 +00:00

95 lines
2.2 KiB
Go

package key
import (
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/crypto"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/types/ethtypes"
"github.com/filecoin-project/lotus/lib/sigs"
)
func GenerateKey(typ types.KeyType) (*Key, error) {
ctyp := ActSigType(typ)
if ctyp == crypto.SigTypeUnknown {
return nil, xerrors.Errorf("unknown sig type: %s", typ)
}
pk, err := sigs.Generate(ctyp)
if err != nil {
return nil, err
}
ki := types.KeyInfo{
Type: typ,
PrivateKey: pk,
}
return NewKey(ki)
}
type Key struct {
types.KeyInfo
PublicKey []byte
Address address.Address
}
func NewKey(keyinfo types.KeyInfo) (*Key, error) {
k := &Key{
KeyInfo: keyinfo,
}
var err error
k.PublicKey, err = sigs.ToPublic(ActSigType(k.Type), k.PrivateKey)
if err != nil {
return nil, err
}
switch k.Type {
case types.KTSecp256k1:
k.Address, err = address.NewSecp256k1Address(k.PublicKey)
if err != nil {
return nil, xerrors.Errorf("converting Secp256k1 to address: %w", err)
}
case types.KTDelegated:
// Transitory Delegated signature verification as per FIP-0055
ethAddr, err := ethtypes.EthAddressFromPubKey(k.PublicKey)
if err != nil {
return nil, xerrors.Errorf("failed to calculate Eth address from public key: %w", err)
}
ea, err := ethtypes.CastEthAddress(ethAddr)
if err != nil {
return nil, xerrors.Errorf("failed to create ethereum address from bytes: %w", err)
}
k.Address, err = ea.ToFilecoinAddress()
if err != nil {
return nil, xerrors.Errorf("converting Delegated to address: %w", err)
}
case types.KTBLS:
k.Address, err = address.NewBLSAddress(k.PublicKey)
if err != nil {
return nil, xerrors.Errorf("converting BLS to address: %w", err)
}
default:
return nil, xerrors.Errorf("unsupported key type: %s", k.Type)
}
return k, nil
}
func ActSigType(typ types.KeyType) crypto.SigType {
switch typ {
case types.KTBLS:
return crypto.SigTypeBLS
case types.KTSecp256k1:
return crypto.SigTypeSecp256k1
case types.KTDelegated:
return crypto.SigTypeDelegated
default:
return crypto.SigTypeUnknown
}
}