func (enc *base64.Encoding) Encode(dst, src []byte)
func (enc *base64.Encoding) Decode(dst, src []byte) (n int, err error)
func (enc *base64.Encoding) EncodeToString(src []byte) string
func (enc *base64.Encoding) DecodeString(s string) ([]byte, error)
The encoding/base64 package contains...