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1820ecce31
In order to be able to recover from the AP and Cr50 getting out of sync, this logging functionality gives Cr50 a way to track the state changes of the merkle tree so that the AP can be updated to the current state as long as it has a recent enough copy. This involves packing the important information so it can be stored efficiently on flash, and adding the necessary messages for the replay. CQ-DEPEND=CL:895395,CL:929430 BRANCH=none BUG=chromium:809729, chromium:809745 TEST=cd ~/src/platform/ec && V=1 make run-weaver_ng -j Change-Id: I40f98de2c8e9706cccb5b922215699f2132fa121 Signed-off-by: Allen Webb <allenwebb@google.com> Reviewed-on: https://chromium-review.googlesource.com/963773 Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* Copyright 2018 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Provides the minimal declarations needed by pinweaver to build on
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* CHIP_HOST. While it might be preferable to simply use the original dcrypto.h,
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* That would require incorporating additional headers / dependencies such as
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* cryptoc.
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*/
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#ifndef __CROS_EC_DCRYPTO_HOST_H
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#define __CROS_EC_DCRYPTO_HOST_H
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#include <sha256.h>
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#include <stdint.h>
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#include <string.h>
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#define AES256_BLOCK_CIPHER_KEY_SIZE 32
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#define SHA256_DIGEST_SIZE 32
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#define HASH_CTX sha256_ctx
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enum dcrypto_appid {
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RESERVED = 0,
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NVMEM = 1,
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U2F_ATTEST = 2,
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U2F_ORIGIN = 3,
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U2F_WRAP = 4,
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PERSO_AUTH = 5,
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PINWEAVER = 6,
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/* This enum value should not exceed 7. */
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};
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/* Used as a replacement for declarations in cryptoc that are used by Cr50, but
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* add unnecessary complexity to the test code.
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*/
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struct dcrypto_mock_ctx_t {
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struct HASH_CTX hash;
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};
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#define LITE_HMAC_CTX struct dcrypto_mock_ctx_t
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#define LITE_SHA256_CTX struct HASH_CTX
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void HASH_update(struct HASH_CTX *ctx, const void *data, size_t len);
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uint8_t *HASH_final(struct HASH_CTX *ctx);
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void DCRYPTO_SHA256_init(LITE_SHA256_CTX *ctx, uint32_t sw_required);
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void DCRYPTO_HMAC_SHA256_init(LITE_HMAC_CTX *ctx, const void *key,
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unsigned int len);
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const uint8_t *DCRYPTO_HMAC_final(LITE_HMAC_CTX *ctx);
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int DCRYPTO_aes_ctr(uint8_t *out, const uint8_t *key, uint32_t key_bits,
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const uint8_t *iv, const uint8_t *in, size_t in_len);
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struct APPKEY_CTX {};
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int DCRYPTO_appkey_init(enum dcrypto_appid appid, struct APPKEY_CTX *ctx);
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void DCRYPTO_appkey_finish(struct APPKEY_CTX *ctx);
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int DCRYPTO_appkey_derive(enum dcrypto_appid appid, const uint32_t input[8],
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uint32_t output[8]);
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#endif /* __CROS_EC_HOST_DCRYPTO_H */
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