func ConfigDecodeKey(keyStr string) ([]byte, error) {
	return base64.StdEncoding.DecodeString(keyStr)
}
ConfigDecodeKey decodes a key from its friendly string format.
package ring
import (
	"encoding/base64"
)
type PublicKey []byte
type PrivateKey []byte
func ConfigEncodeKey(key []byte) string {
	return base64.StdEncoding.EncodeToString(key)
}