68 lines
2.1 KiB
Java
68 lines
2.1 KiB
Java
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/*
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* Copyright (C) 2024 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.crypto.hpke;
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import java.security.spec.EncodedKeySpec;
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import java.util.Arrays;
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import java.util.Objects;
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import libcore.util.NonNull;
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/**
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* External Diffie–Hellman (XDH) key spec holding either a public or private key.
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* <p>
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* Subclasses {@code EncodedKeySpec} using the non-Standard "raw" format. The XdhKeyFactory
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* class utilises this in order to create XDH keys from raw bytes and to return them
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* as an XdhKeySpec allowing the raw key material to be extracted from an XDH key.
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*/
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public final class XdhKeySpec extends EncodedKeySpec {
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/**
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* Creates an instance of {@link XdhKeySpec} by passing a public or private key in its raw
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* format.
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*/
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public XdhKeySpec(@NonNull byte[] encoded) {
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super(encoded);
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}
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@Override
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@NonNull public String getFormat() {
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return "raw";
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}
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/**
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* Returns the public or private key in its raw format.
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*
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* @return key in its raw format.
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*/
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@NonNull public byte[] getKey() {
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return getEncoded();
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (!(o instanceof EncodedKeySpec)) return false;
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EncodedKeySpec that = (EncodedKeySpec) o;
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return (getFormat().equals(that.getFormat())
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&& (Arrays.equals(getEncoded(), that.getEncoded())));
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}
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@Override
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public int hashCode() {
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return Objects.hash(getFormat(), Arrays.hashCode(getEncoded()));
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}
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}
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