initial stub commit

config.go

@@ -0,0 +1,24 @@
+package ussher
+
+import (
+	"io/ioutil"
+
+	"golang.org/x/crypto/ssh"
+)
+
+type Config struct {
+	HostKeyPath string
+	Keystore    Keystore
+}
+
+func (c *Config) GetPrivateKey() (ssh.Signer, error) {
+	bytes, err := ioutil.ReadFile(c.HostKeyPath)
+	if err != nil {
+		return nil, err
+	}
+	return ssh.ParsePrivateKey(bytes)
+}
+
+type Keystore interface {
+	CheckPublicKey(user string, key ssh.PublicKey) (*ssh.Permissions, error)
+}