mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-28 14:17:17 +00:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package p2p
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import (
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"crypto/ecdsa"
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"crypto/rand"
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"encoding/hex"
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"io/ioutil"
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"net"
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"os"
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"path"
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"github.com/btcsuite/btcd/btcec"
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"github.com/libp2p/go-libp2p-core/crypto"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/shared/iputils"
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)
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const keyPath = "network-keys"
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func convertFromInterfacePrivKey(privkey crypto.PrivKey) *ecdsa.PrivateKey {
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typeAssertedKey := (*ecdsa.PrivateKey)((*btcec.PrivateKey)(privkey.(*crypto.Secp256k1PrivateKey)))
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return typeAssertedKey
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}
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func convertToInterfacePrivkey(privkey *ecdsa.PrivateKey) crypto.PrivKey {
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typeAssertedKey := crypto.PrivKey((*crypto.Secp256k1PrivateKey)((*btcec.PrivateKey)(privkey)))
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return typeAssertedKey
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}
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func convertToInterfacePubkey(pubkey *ecdsa.PublicKey) crypto.PubKey {
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typeAssertedKey := crypto.PubKey((*crypto.Secp256k1PublicKey)((*btcec.PublicKey)(pubkey)))
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return typeAssertedKey
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}
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func privKey(cfg *Config) (*ecdsa.PrivateKey, error) {
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defaultKeyPath := path.Join(cfg.DataDir, keyPath)
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privateKeyPath := cfg.PrivateKey
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_, err := os.Stat(defaultKeyPath)
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defaultKeysExist := !os.IsNotExist(err)
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if err != nil && defaultKeysExist {
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return nil, err
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}
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if privateKeyPath == "" && !defaultKeysExist {
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priv, _, err := crypto.GenerateSecp256k1Key(rand.Reader)
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if err != nil {
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return nil, err
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}
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rawbytes, err := priv.Raw()
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if err != nil {
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return nil, err
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}
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dst := make([]byte, hex.EncodedLen(len(rawbytes)))
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hex.Encode(dst, rawbytes)
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if err = ioutil.WriteFile(defaultKeyPath, dst, 0600); err != nil {
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return nil, err
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}
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convertedKey := convertFromInterfacePrivKey(priv)
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return convertedKey, nil
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}
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if defaultKeysExist && privateKeyPath == "" {
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privateKeyPath = defaultKeyPath
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}
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return retrievePrivKeyFromFile(privateKeyPath)
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}
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func retrievePrivKeyFromFile(path string) (*ecdsa.PrivateKey, error) {
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src, err := ioutil.ReadFile(path)
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if err != nil {
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log.WithError(err).Error("Error reading private key from file")
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return nil, err
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}
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dst := make([]byte, hex.DecodedLen(len(src)))
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_, err = hex.Decode(dst, src)
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if err != nil {
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return nil, errors.Wrap(err, "failed to decode hex string")
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}
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unmarshalledKey, err := crypto.UnmarshalSecp256k1PrivateKey(dst)
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if err != nil {
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return nil, err
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}
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return convertFromInterfacePrivKey(unmarshalledKey), nil
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}
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func ipAddr() net.IP {
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ip, err := iputils.ExternalIPv4()
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if err != nil {
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log.Fatalf("Could not get IPv4 address: %v", err)
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}
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return net.ParseIP(ip)
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}
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