/
keybase_base_okchain.go
59 lines (51 loc) · 1.26 KB
/
keybase_base_okchain.go
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package keys
import (
"encoding/hex"
"fmt"
ethcrypto "github.com/ethereum/go-ethereum/crypto"
"github.com/pkg/errors"
)
func encode(derivedPriv [32]byte) string {
src := make([]byte, len(derivedPriv))
for idx, m := range derivedPriv {
src[idx] = m
}
dst := make([]byte, hex.EncodedLen(len(src)))
hex.Encode(dst, src)
return string(dst)
}
func decode(key string) [32]byte {
src := []byte(key)
dst := make([]byte, hex.DecodedLen(len(src)))
n, err := hex.Decode(dst, src)
if err != nil {
panic(err)
}
if n != 32 {
panic("invalid input!")
}
var res [32]byte
for idx, m := range dst {
res[idx] = m
}
return res
}
func deriveKeyByPrivKey(privKey string, algo SigningAlgo) ([]byte, error) {
switch algo {
case Secp256k1:
decodePriv := decode(privKey)
keyStr := encode(decodePriv)
if privKey != keyStr {
return nil, fmt.Errorf("invalid private key '%s', algo '%s'", privKey, algo)
}
return decodePriv[:], nil
case SigningAlgo("eth_secp256k1"):
privKeyECDSA, err := ethcrypto.HexToECDSA(privKey)
if err != nil {
return nil, fmt.Errorf("invalid private key '%s', algo '%s', error: %s", privKey, algo, err)
}
return ethcrypto.FromECDSA(privKeyECDSA), nil
default:
return nil, errors.Wrap(ErrUnsupportedSigningAlgo, string(algo))
}
}