From a6a0568c6ba4475c7de6628ae7be8d64d703b5c7 Mon Sep 17 00:00:00 2001
From: Thiago Souza <thiago@squidcloud.io>
Date: Sat, 23 Sep 2023 19:46:44 +0100
Subject: [PATCH] add ImportPrivKeyHex

---
 crypto/keyring/keyring.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/crypto/keyring/keyring.go b/crypto/keyring/keyring.go
index f96c8635243c..a6fb62bd0673 100644
--- a/crypto/keyring/keyring.go
+++ b/crypto/keyring/keyring.go
@@ -41,6 +41,7 @@ const (
 	keyringFileDirName = "keyring-file"
 	keyringTestDirName = "keyring-test"
 	passKeyringPrefix  = "keyring-%s"
+	hexPrefix = "0x"
 )
 
 var (
@@ -305,6 +306,29 @@ func (ks keystore) ImportPrivKey(uid, armor, passphrase string) error {
 	return nil
 }
 
+func (ks keystore) ImportPrivKeyHex(uid, privKey, algoStr string) error {
+	if _, err := ks.Key(uid); err == nil {
+		return fmt.Errorf("cannot overwrite key: %s", uid)
+	}
+	if privKey[:2] == hexPrefix {
+		privKey = privKey[2:]
+	}
+	decodedPriv, err := hex.DecodeString(privKey)
+	if err != nil {
+		return err
+	}
+	algo, err := NewSigningAlgoFromString(algoStr, ks.options.SupportedAlgos)
+	if err != nil {
+		return err
+	}
+	priv := algo.Generate()(decodedPriv)
+	_, err = ks.writeLocalKey(uid, priv, algo.Name())
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func (ks keystore) ImportPubKey(uid string, armor string) error {
 	if _, err := ks.Key(uid); err == nil {
 		return fmt.Errorf("cannot overwrite key: %s", uid)