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86 lines
2.7 KiB
86 lines
2.7 KiB
/*
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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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#ifndef _FSCRYPT_H_
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#define _FSCRYPT_H_
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#include <string>
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bool fscrypt_is_native();
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static const char* fscrypt_unencrypted_folder = "/unencrypted";
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static const char* fscrypt_key_ref = "/unencrypted/ref";
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static const char* fscrypt_key_per_boot_ref = "/unencrypted/per_boot_ref";
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static const char* fscrypt_key_mode = "/unencrypted/mode";
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namespace android {
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namespace fscrypt {
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struct EncryptionOptions {
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int version;
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int contents_mode;
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int filenames_mode;
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int flags;
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bool use_hw_wrapped_key;
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// Ensure that "version" is not valid on creation and so must be explicitly set
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EncryptionOptions() : version(0) {}
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};
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struct EncryptionPolicy {
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EncryptionOptions options;
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std::string key_raw_ref;
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};
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void BytesToHex(const std::string& bytes, std::string* hex);
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unsigned int GetFirstApiLevel();
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bool OptionsToString(const EncryptionOptions& options, std::string* options_string);
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bool OptionsToStringForApiLevel(unsigned int first_api_level, const EncryptionOptions& options,
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std::string* options_string);
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bool ParseOptions(const std::string& options_string, EncryptionOptions* options);
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bool ParseOptionsForApiLevel(unsigned int first_api_level, const std::string& options_string,
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EncryptionOptions* options);
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bool EnsurePolicy(const EncryptionPolicy& policy, const std::string& directory);
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inline bool operator==(const EncryptionOptions& lhs, const EncryptionOptions& rhs) {
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return (lhs.version == rhs.version) && (lhs.contents_mode == rhs.contents_mode) &&
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(lhs.filenames_mode == rhs.filenames_mode) && (lhs.flags == rhs.flags) &&
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(lhs.use_hw_wrapped_key == rhs.use_hw_wrapped_key);
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}
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inline bool operator!=(const EncryptionOptions& lhs, const EncryptionOptions& rhs) {
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return !(lhs == rhs);
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}
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inline bool operator==(const EncryptionPolicy& lhs, const EncryptionPolicy& rhs) {
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return lhs.key_raw_ref == rhs.key_raw_ref && lhs.options == rhs.options;
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}
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inline bool operator!=(const EncryptionPolicy& lhs, const EncryptionPolicy& rhs) {
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return !(lhs == rhs);
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}
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} // namespace fscrypt
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} // namespace android
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#endif // _FSCRYPT_H_
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