Add PrivateKeyFileWithPassphrase from elliotchance#11

private_key_file.go

@@ -6,7 +6,7 @@ import (
 	"golang.org/x/crypto/ssh"
 )
 
-func PrivateKeyFile(file string) ssh.AuthMethod {
+func PrivateKeyFile(file string, pass ...string) ssh.AuthMethod {
 	buffer, err := os.ReadFile(file)
 	if err != nil {
 		return nil
@@ -19,3 +19,18 @@ func PrivateKeyFile(file string) ssh.AuthMethod {
 
 	return ssh.PublicKeys(key)
 }
+
+// All credits go to the author fagnercarvalho
+func PrivateKeyFileWithPassphrase(file string, passphrase string) ssh.AuthMethod {
+	buffer, err := os.ReadFile(file)
+	if err != nil {
+		return nil
+	}
+
+	key, err := ssh.ParsePrivateKeyWithPassphrase(buffer, []byte(passphrase))
+	if err != nil {
+		return nil
+	}
+
+	return ssh.PublicKeys(key)
+}