89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/*
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* Copyright (C) 2016 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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#define LOG_TAG "keystore"
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#include "keystore_utils.h"
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <cutils/log.h>
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#include <private/android_filesystem_config.h>
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#include <keymaster/android_keymaster_utils.h>
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size_t readFully(int fd, uint8_t* data, size_t size) {
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size_t remaining = size;
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while (remaining > 0) {
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ssize_t n = TEMP_FAILURE_RETRY(read(fd, data, remaining));
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if (n <= 0) {
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return size - remaining;
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}
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data += n;
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remaining -= n;
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}
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return size;
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}
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size_t writeFully(int fd, uint8_t* data, size_t size) {
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size_t remaining = size;
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while (remaining > 0) {
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ssize_t n = TEMP_FAILURE_RETRY(write(fd, data, remaining));
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if (n < 0) {
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ALOGW("write failed: %s", strerror(errno));
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return size - remaining;
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}
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data += n;
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remaining -= n;
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}
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return size;
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}
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void add_legacy_key_authorizations(int keyType, std::vector<keymaster_key_param_t>* params) {
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params->push_back(keymaster_param_enum(KM_TAG_PURPOSE, KM_PURPOSE_SIGN));
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params->push_back(keymaster_param_enum(KM_TAG_PURPOSE, KM_PURPOSE_VERIFY));
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params->push_back(keymaster_param_enum(KM_TAG_PURPOSE, KM_PURPOSE_ENCRYPT));
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params->push_back(keymaster_param_enum(KM_TAG_PURPOSE, KM_PURPOSE_DECRYPT));
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params->push_back(keymaster_param_enum(KM_TAG_PADDING, KM_PAD_NONE));
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if (keyType == EVP_PKEY_RSA) {
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params->push_back(keymaster_param_enum(KM_TAG_PADDING, KM_PAD_RSA_PKCS1_1_5_SIGN));
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params->push_back(keymaster_param_enum(KM_TAG_PADDING, KM_PAD_RSA_PKCS1_1_5_ENCRYPT));
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params->push_back(keymaster_param_enum(KM_TAG_PADDING, KM_PAD_RSA_PSS));
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params->push_back(keymaster_param_enum(KM_TAG_PADDING, KM_PAD_RSA_OAEP));
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}
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_NONE));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_MD5));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_SHA1));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_SHA_2_224));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_SHA_2_256));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_SHA_2_384));
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params->push_back(keymaster_param_enum(KM_TAG_DIGEST, KM_DIGEST_SHA_2_512));
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params->push_back(keymaster_param_bool(KM_TAG_ALL_USERS));
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params->push_back(keymaster_param_bool(KM_TAG_NO_AUTH_REQUIRED));
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params->push_back(keymaster_param_date(KM_TAG_ORIGINATION_EXPIRE_DATETIME, LLONG_MAX));
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params->push_back(keymaster_param_date(KM_TAG_USAGE_EXPIRE_DATETIME, LLONG_MAX));
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params->push_back(keymaster_param_date(KM_TAG_ACTIVE_DATETIME, 0));
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}
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uid_t get_app_id(uid_t uid) {
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return uid % AID_USER;
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}
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uid_t get_user_id(uid_t uid) {
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return uid / AID_USER;
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}
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