func EncodedLen(n int) int {
	return (n + 4) / 5 * 8
}
EncodedLen returns the maximum length in bytes of the z-base-32
encoding of an input buffer of length n.
package zbase32
import (
	"errors"
	"strconv"
)
const alphabet = "ybndrfg8ejkmcpqxot1uwisza345h769"
var decodeMap [256]byte
func init() {
	for i := 0; i < len(decodeMap); i++ {
		decodeMap[i] = 0xFF
	}
	for i := 0; i < len(alphabet); i++ {
		decodeMap[alphabet[i]] = byte(i)
	}
}
type CorruptInputError int64
func (e CorruptInputError) Error() string {
	return "illegal z-base-32 data at input byte " + strconv.FormatInt(int64(e), 10)
}