diff options
Diffstat (limited to '')
-rw-r--r-- | crypto/ext4crypt/Weaver1.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/crypto/ext4crypt/Weaver1.h b/crypto/ext4crypt/Weaver1.h new file mode 100644 index 000000000..22f401e70 --- /dev/null +++ b/crypto/ext4crypt/Weaver1.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2017 Team Win Recovery Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* To the best of my knowledge there is no native implementation for + * Weaver so I made this by looking at the IWeaver.h file that gets + * compiled by the build system. I took the information from this header + * file and looked at keymaster source to get an idea of the proper way + * to write the functions. + */ + +#ifndef TWRP_WEAVER_H +#define TWRP_WEAVER_H + +#include <memory> +#include <string> +#include <utility> + +#include <android/hardware/weaver/1.0/IWeaver.h> +#include "Utils.h" + +namespace android { +namespace vold { +using ::android::hardware::weaver::V1_0::IWeaver; + +// Wrapper for a Weaver device +class Weaver { + public: + Weaver(); + // false if we failed to open the weaver device. + explicit operator bool() { return mDevice.get() != nullptr; } + + bool GetSlots(uint32_t* slots); + bool GetKeySize(uint32_t* keySize); + bool GetValueSize(uint32_t* valueSize); + // TODO: we should return more information about the status including time delays before the next retry + bool WeaverVerify(const uint32_t slot, const void* weaver_key, std::vector<uint8_t>* payload); + + private: + sp<hardware::weaver::V1_0::IWeaver> mDevice; + hardware::weaver::V1_0::WeaverConfig config; + bool GottenConfig; + + bool GetConfig(); + + DISALLOW_COPY_AND_ASSIGN(Weaver); +}; + +} // namespace vold +} // namespace android + +#endif |