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aeskey.go
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74 lines (57 loc) · 2.75 KB
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"encoding/hex"
"strings"
)
// AES128Key is an 128-bit AES key.
type AES128Key [16]byte
// IsZero returns true iff the type is zero.
func (key *AES128Key) IsZero() bool { return key == nil || *key == [16]byte{} }
// String implements the Stringer interface.
func (key AES128Key) String() string { return strings.ToUpper(hex.EncodeToString(key[:])) }
// GoString implements the GoStringer interface.
func (key AES128Key) GoString() string { return key.String() }
// Size implements the Sizer interface.
func (key AES128Key) Size() int { return 16 }
// Equal returns true iff keys are equal.
func (key AES128Key) Equal(other AES128Key) bool { return key == other }
// Marshal implements the proto.Marshaler interface.
func (key AES128Key) Marshal() ([]byte, error) { return key.MarshalBinary() }
// MarshalTo implements the MarshalerTo function required by generated protobuf.
func (key AES128Key) MarshalTo(data []byte) (int, error) { return marshalBinaryBytesTo(data, key[:]) }
// Unmarshal implements the proto.Unmarshaler interface.
func (key *AES128Key) Unmarshal(data []byte) error { return key.UnmarshalBinary(data) }
// MarshalJSON implements the json.Marshaler interface.
func (key AES128Key) MarshalJSON() ([]byte, error) { return marshalJSONHexBytes(key[:]) }
// UnmarshalJSON implements the json.Unmarshaler interface.
func (key *AES128Key) UnmarshalJSON(data []byte) error {
*key = [16]byte{}
return unmarshalJSONHexBytes(key[:], data)
}
// MarshalBinary implements the encoding.BinaryMarshaler interface.
func (key AES128Key) MarshalBinary() ([]byte, error) { return marshalBinaryBytes(key[:]) }
// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface.
func (key *AES128Key) UnmarshalBinary(data []byte) error {
*key = [16]byte{}
return unmarshalBinaryBytes(key[:], data)
}
// MarshalText implements the encoding.TextMarshaler interface.
func (key AES128Key) MarshalText() ([]byte, error) { return marshalTextBytes(key[:]) }
// UnmarshalText implements the encoding.TextUnmarshaler interface.
func (key *AES128Key) UnmarshalText(data []byte) error {
*key = [16]byte{}
return unmarshalTextBytes(key[:], data)
}