1/* 2 * Copyright (C) 2018 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 17syntax = "proto2"; 18 19package keystore; 20 21option optimize_for = LITE_RUNTIME; 22 23message OperationConfig { 24 // What type of encryption algorithm is the key being used in the op for. 25 optional string algorithm = 1; 26 27 // Size of the key being used in this op 28 optional int32 key_size = 2; 29 30 // Log whether the key in this op was generated, imported, 31 // securely imported, or derived. 32 optional string origin = 3; 33 34 // What auth types does this op require? If none, then no auth required. 35 optional string user_auth_type = 4; 36 37 // If user authentication is required, is the requirement time based? If it 38 // is not time based then this field will not be used and the key is per 39 // operation. Per operation keys must be user authenticated on each usage. 40 optional int32 user_auth_key_timeout = 5; 41 42 // Track which padding mode was used for this operation. 43 optional string padding = 6; 44 45 // Keep track of the digest algorithm being used. 46 optional string digest = 7; 47 48 // Check what block mode is being used depending on the mode of encryption 49 optional string block_mode = 8; 50 51 // Did the operation succeed? If it didn't, this represents bugs or 52 // error cases occurring. 53 optional bool was_op_successful = 9; 54 55 // What purpose is this operation serving? Encrypt, decrypt, sign verify? 56 optional string purpose = 10; 57 58 // Which ec curve was selected if elliptic curve cryptography is in use 59 optional string ec_curve = 11; 60 61 // Standalone or is a file system required 62 optional string key_blob_usage_reqs = 12; 63} 64