}
	z.a.neg = b&1 != 0
	z.a.abs = z.a.abs.setBytes(buf[j:i])
	z.b.abs = z.b.abs.setBytes(buf[i:])
	return nil
}

// MarshalText implements the [encoding.TextMarshaler] interface.
func (x *Rat) MarshalText() (text []byte, err error) {
	if x.IsInt() {
		return x.a.MarshalText()
	}
	return x.marshal(), nil
}

// UnmarshalText implements the [encoding.TextUnmarshaler] interface.

// The same context must be provided when the generated
// key should be decrypted.
func (c *kesConn) GenerateKey(ctx context.Context, req *GenerateKeyRequest) (DEK, error) {
	aad, err := req.AssociatedData.MarshalText()
	if err != nil {
		return DEK{}, err
	}

	name := req.Name
	if name == "" {
		name = c.defaultKeyID
	}

	dek, err := c.client.GenerateKey(ctx, name, aad)
	if err != nil {

		t.Fatal(err)
	}
	if got != want {
		t.Errorf("got %s, want %s", got, want)
	}
}

func TestLevelMarshalText(t *testing.T) {
	want := LevelWarn - 3
	wantData := []byte("INFO+1")
	data, err := want.MarshalText()
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Equal(data, wantData) {
		t.Errorf("got %s, want %s", string(data), string(wantData))
	}
	var got Level
	if err := got.UnmarshalText(data); err != nil {

			continue
		}

		if !o2.Equal(tt.out) {
			t.Errorf("ParseOID(%q) = %v; want = %v", tt.in, o2, tt.out)
			continue
		}

		marshalled, err := o.MarshalText()
		if string(marshalled) != tt.in || err != nil {
			t.Errorf("(%#v).MarshalText() = (%v, %v); want = (%v, nil)", o, string(marshalled), err, tt.in)
			continue
		}

		binary, err := o.MarshalBinary()
		if err != nil {

		return errors.New("Float.GobDecode: " + msg)
	}

	return nil
}

// MarshalText implements the [encoding.TextMarshaler] interface.
// Only the [Float] value is marshaled (in full precision), other
// attributes such as precision or accuracy are ignored.
func (x *Float) MarshalText() (text []byte, err error) {
	if x == nil {
		return []byte("<nil>"), nil
	}
	var buf []byte

	Ciphertext []byte // Ciphertext of the data encryption key
}

var (
	_ encoding.TextMarshaler   = (*DEK)(nil)
	_ encoding.TextUnmarshaler = (*DEK)(nil)
)

// MarshalText encodes the DEK's key ID and ciphertext
// as JSON.
func (d DEK) MarshalText() ([]byte, error) {
	type JSON struct {
		KeyID      string `json:"keyid"`
		Version    uint32 `json:"version,omitempty"`
		Ciphertext []byte `json:"ciphertext"`
	}

		},
	},
}

func TestEncodeDecodeDEK(t *testing.T) {
	for i, test := range dekEncodeDecodeTests {
		text, err := test.Key.MarshalText()
		if err != nil {
			t.Fatalf("Test %d: failed to marshal DEK: %v", i, err)
		}

		var key DEK
		if err = key.UnmarshalText(text); err != nil {
			t.Fatalf("Test %d: failed to unmarshal DEK: %v", i, err)
		}

// with KES and MinKMS.
func (s secretKey) GenerateKey(_ context.Context, req *GenerateKeyRequest) (DEK, error) {
	if req.Name != s.keyID {
		return DEK{}, ErrKeyNotFound
	}
	associatedData, err := req.AssociatedData.MarshalText()
	if err != nil {
		return DEK{}, err
	}

	const randSize = 28
	random, err := sioutil.Random(randSize)
	if err != nil {
		return DEK{}, err
	}
	iv, nonce := random[:16], random[16:]

type RefText int

func (*RefText) MarshalText() ([]byte, error) {
	return []byte(`"ref"`), nil
}

func (r *RefText) UnmarshalText([]byte) error {
	*r = 13
	return nil
}

// ValText has Marshaler methods with value receiver.
type ValText int

func (ValText) MarshalText() ([]byte, error) {
	return []byte(`"val"`), nil
}

		ret = append(ret, '%')
		ret = append(ret, ip.Zone()...)
	}
	return string(ret)
}

// MarshalText implements the [encoding.TextMarshaler] interface,
// The encoding is the same as returned by [Addr.String], with one exception:
// If ip is the zero [Addr], the encoding is the empty string.
func (ip Addr) MarshalText() ([]byte, error) {
	switch ip.z {
	case z0:
		return []byte(""), nil
	case z4: