{StdEncoding, 6, 16},
		{StdEncoding, 10, 16},
		{StdEncoding, 11, 24},
		{rawStdEncoding, 0, 0},
		{rawStdEncoding, 1, 2},
		{rawStdEncoding, 2, 4},
		{rawStdEncoding, 3, 5},
		{rawStdEncoding, 4, 7},
		{rawStdEncoding, 5, 8},
		{rawStdEncoding, 6, 10},
		{rawStdEncoding, 7, 12},
		{rawStdEncoding, 10, 16},
		{rawStdEncoding, 11, 18},
	}
	// check overflow
	switch strconv.IntSize {
	case 32:

		n    int
		want int64
	}
	tests := []test{
		{RawStdEncoding, 0, 0},
		{RawStdEncoding, 2, 1},
		{RawStdEncoding, 3, 2},
		{RawStdEncoding, 4, 3},
		{RawStdEncoding, 10, 7},
		{StdEncoding, 0, 0},
		{StdEncoding, 4, 3},
		{StdEncoding, 8, 6},
	}
	// check overflow
	switch strconv.IntSize {
	case 32:
		tests = append(tests, test{RawStdEncoding, math.MaxInt/6 + 1, 268435456})

	var decoded []byte

	// StdEncoding can only decode padded string
	// RawStdEncoding can only decode unpadded string
	if strings.HasSuffix(strings.TrimSpace(field), "=") {
		// decode padded data
		decoded, err = base64.StdEncoding.DecodeString(field)
	} else {
		// decode unpadded data
		decoded, err = base64.RawStdEncoding.DecodeString(field)
	}

	if err != nil {
		return
	}

	}
	if length < secretKeyMinLen {
		return "", errors.New("auth: secret key length is too short")
	}

	key := make([]byte, base64.RawStdEncoding.DecodedLen(length))
	if _, err := io.ReadFull(random, key); err != nil {
		return "", err
	}

	s := base64.RawStdEncoding.EncodeToString(key)
	return strings.ReplaceAll(s, "/", "+"), nil
}

	// Since we already checked that the hash ends in = above,
	// we can use base64.RawStdEncoding with the = removed;
	// RawStdEncoding does not exhibit the same bug.
	// We decode into a temporary to avoid writing anything to *h
	// unless the entire input is well-formed.
	var tmp Hash
	n, err := base64.RawStdEncoding.Decode(tmp[:], data[1:len(data)-2])
	if err != nil || n != HashSize {
		return errors.New("cannot decode hash")

		{
			input:    base64.StdEncoding.EncodeToString([]byte("foo:bar")),
			username: "foo",
			password: "bar",
		},

		// raw encoding (without padding)
		{
			input:    base64.RawStdEncoding.EncodeToString([]byte("foo:bar")),
			username: "foo",
			password: "bar",
		},

		// the input is encoded with encodeDockerConfigFieldAuth (standard encoding)
		{

var URLEncoding = NewEncoding("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_")

// RawStdEncoding is the standard raw, unpadded base64 encoding,
// as defined in RFC 4648 section 3.2.
// This is the same as [StdEncoding] but omits padding characters.
var RawStdEncoding = StdEncoding.WithPadding(NoPadding)

// RawURLEncoding is the unpadded alternate base64 encoding defined in RFC 4648.

pkg encoding/base64, const NoPadding int32
pkg encoding/base64, const StdPadding = 61
pkg encoding/base64, const StdPadding int32
pkg encoding/base64, method (Encoding) WithPadding(int32) *Encoding
pkg encoding/base64, var RawStdEncoding *Encoding
pkg encoding/base64, var RawURLEncoding *Encoding
pkg encoding/json, method (*Decoder) More() bool
pkg encoding/json, method (*Decoder) Token() (Token, error)
pkg encoding/json, method (Delim) String() string

		{"CorruptInputError", Type, 0},
		{"Encoding", Type, 0},
		{"NewDecoder", Func, 0},
		{"NewEncoder", Func, 0},
		{"NewEncoding", Func, 0},
		{"NoPadding", Const, 5},
		{"RawStdEncoding", Var, 5},
		{"RawURLEncoding", Var, 5},
		{"StdEncoding", Var, 0},
		{"StdPadding", Const, 5},
		{"URLEncoding", Var, 0},
	},
	"encoding/binary": {
		{"AppendByteOrder", Type, 19},