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u-boot/lib/libavb/avb_sha.h
Sam Protsenko 4d579a4394 libavb: Update libavb to current AOSP master
Update libavb to commit 5fbb42a189aa in AOSP/master, because new version
has support for super partition [1], which we need for implementing
Android dynamic partitions. All changes from previous patches for libavb
in U-Boot are accounted for in this commit:
  - commit ecc6f6bea6 ("libavb: Handle wrong hashtree_error_mode in
                          avb_append_options()")
  - commit 897a1d947e ("libavb: Update SPDX tag style")
  - commit d8f9d2af96 ("avb2.0: add Android Verified Boot 2.0 library")

Tested on X15:

    ## Android Verified Boot 2.0 version 1.1.0
    read_is_device_unlocked not supported yet
    read_rollback_index not supported yet
    read_is_device_unlocked not supported yet
    Verification passed successfully
    AVB verification OK.

Unit test passes:

    $ ./test/py/test.py --bd sandbox --build -k test_avb

      test/py/tests/test_android/test_avb.py ss..s.

[1] 49936b4c01

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Eugeniu Rosca <rosca.eugeniu@gmail.com>
Acked-by: Igor Opaniuk <igor.opaniuk@gmail.com>
2019-10-31 07:22:53 -04:00

71 lines
1.8 KiB
C

/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#ifdef AVB_INSIDE_LIBAVB_H
#error "You can't include avb_sha.h in the public header libavb.h."
#endif
#ifndef AVB_COMPILATION
#error "Never include this file, it may only be used from internal avb code."
#endif
#ifndef AVB_SHA_H_
#define AVB_SHA_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "avb_crypto.h"
#include "avb_sysdeps.h"
/* Block size in bytes of a SHA-256 digest. */
#define AVB_SHA256_BLOCK_SIZE 64
/* Block size in bytes of a SHA-512 digest. */
#define AVB_SHA512_BLOCK_SIZE 128
/* Data structure used for SHA-256. */
typedef struct {
uint32_t h[8];
uint64_t tot_len;
size_t len;
uint8_t block[2 * AVB_SHA256_BLOCK_SIZE];
uint8_t buf[AVB_SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */
} AvbSHA256Ctx;
/* Data structure used for SHA-512. */
typedef struct {
uint64_t h[8];
uint64_t tot_len;
size_t len;
uint8_t block[2 * AVB_SHA512_BLOCK_SIZE];
uint8_t buf[AVB_SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */
} AvbSHA512Ctx;
/* Initializes the SHA-256 context. */
void avb_sha256_init(AvbSHA256Ctx* ctx);
/* Updates the SHA-256 context with |len| bytes from |data|. */
void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, size_t len);
/* Returns the SHA-256 digest. */
uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT;
/* Initializes the SHA-512 context. */
void avb_sha512_init(AvbSHA512Ctx* ctx);
/* Updates the SHA-512 context with |len| bytes from |data|. */
void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, size_t len);
/* Returns the SHA-512 digest. */
uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT;
#ifdef __cplusplus
}
#endif
#endif /* AVB_SHA_H_ */