1 /* 2 * Copyright 2021, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.security.metrics; 18 19 /** 20 * KeyOrigin enum as defined in Keystore2KeyCreationWithGeneralInfo of 21 * frameworks/proto_logging/stats/atoms.proto. 22 * @hide 23 */ 24 @Backing(type="int") 25 enum KeyOrigin { 26 /** Unspecified takes 0. Other values are incremented by 1 compared to keymint spec. */ 27 ORIGIN_UNSPECIFIED = 0, 28 29 /** Generated in KeyMint. Should not exist outside the TEE. */ 30 GENERATED = 1, 31 32 /** Derived inside KeyMint. Likely exists off-device. */ 33 DERIVED = 2, 34 35 /** Imported into KeyMint. Existed as cleartext in Android. */ 36 IMPORTED = 3, 37 38 /** Previously used for another purpose that is now obsolete. */ 39 RESERVED = 4, 40 41 /** Securely imported into KeyMint. */ 42 SECURELY_IMPORTED = 5, 43 }