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85 lines
2.9 KiB
85 lines
2.9 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#if !defined(AVB_INSIDE_LIBAVB_ATX_H) && !defined(AVB_COMPILATION)
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#error \
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"Never include this file directly, include libavb_atx/libavb_atx.h instead."
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#endif
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#ifndef AVB_ATX_OPS_H_
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#define AVB_ATX_OPS_H_
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#include <libavb/libavb.h>
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#include "avb_atx_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct AvbAtxOps;
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typedef struct AvbAtxOps AvbAtxOps;
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/* An extension to AvbOps required by avb_atx_validate_vbmeta_public_key(). */
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struct AvbAtxOps {
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/* Operations from libavb. */
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AvbOps* ops;
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/* Reads permanent |attributes| data. There are no restrictions on where this
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* data is stored. On success, returns AVB_IO_RESULT_OK and populates
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* |attributes|.
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*/
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AvbIOResult (*read_permanent_attributes)(
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AvbAtxOps* atx_ops, AvbAtxPermanentAttributes* attributes);
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/* Reads a |hash| of permanent attributes. This hash MUST be retrieved from a
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* permanently read-only location (e.g. fuses) when a device is LOCKED. On
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* success, returned AVB_IO_RESULT_OK and populates |hash|.
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*/
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AvbIOResult (*read_permanent_attributes_hash)(
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AvbAtxOps* atx_ops, uint8_t hash[AVB_SHA256_DIGEST_SIZE]);
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/* Provides the key version of a key used during verification. This may be
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* useful for managing the minimum key version.
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*/
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void (*set_key_version)(AvbAtxOps* atx_ops,
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size_t rollback_index_location,
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uint64_t key_version);
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/* Generates |num_bytes| random bytes and stores them in |output|,
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* which must point to a buffer large enough to store the bytes.
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*
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* Returns AVB_IO_RESULT_OK on success, otherwise an error code.
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*/
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AvbIOResult (*get_random)(AvbAtxOps* atx_ops,
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size_t num_bytes,
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uint8_t* output);
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* AVB_ATX_OPS_H_ */
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