69 lines
2.1 KiB
Java
69 lines
2.1 KiB
Java
/*
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* Copyright (C) 2015 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.security;
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import android.annotation.IntDef;
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import android.security.keymaster.KeymasterDefs;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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/**
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* Characteristics of {@code AndroidKeyStore} keys.
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*
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* @hide
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*/
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public abstract class KeyStoreKeyCharacteristics {
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private KeyStoreKeyCharacteristics() {}
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@Retention(RetentionPolicy.SOURCE)
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@IntDef({Origin.GENERATED_INSIDE_TEE, Origin.GENERATED_OUTSIDE_OF_TEE, Origin.IMPORTED})
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public @interface OriginEnum {}
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/**
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* Origin of the key.
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*/
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public static abstract class Origin {
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private Origin() {}
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/** Key was generated inside a TEE. */
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public static final int GENERATED_INSIDE_TEE = 1;
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/** Key was generated outside of a TEE. */
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public static final int GENERATED_OUTSIDE_OF_TEE = 2;
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/** Key was imported. */
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public static final int IMPORTED = 0;
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/**
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* @hide
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*/
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public static @OriginEnum int fromKeymaster(int origin) {
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switch (origin) {
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case KeymasterDefs.KM_ORIGIN_HARDWARE:
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return GENERATED_INSIDE_TEE;
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case KeymasterDefs.KM_ORIGIN_SOFTWARE:
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return GENERATED_OUTSIDE_OF_TEE;
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case KeymasterDefs.KM_ORIGIN_IMPORTED:
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return IMPORTED;
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default:
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throw new IllegalArgumentException("Unknown origin: " + origin);
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}
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}
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}
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}
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