Move GetPublicKey to the shared `lib` package

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/util.go b/lib/util.go
new file mode 100644
index 0000000..b1c7b87
--- /dev/null
+++ b/lib/util.go
@@ -0,0 +1,10 @@
+package lib
+
+import "golang.org/x/crypto/ssh"
+
+// GetPublicKey marshals a ssh certificate to a string.
+func GetPublicKey(pub ssh.PublicKey) string {
+	marshaled := ssh.MarshalAuthorizedKey(pub)
+	// Strip trailing newline
+	return string(marshaled[:len(marshaled)-1])
+}