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chromium / chromiumos / platform / pinweaver / refs/heads/stabilize-14333.B
commit71a12656858f452af4b5410cee156526b9f65c62[log] [tgz]
authorYi Chou <yich@google.com>Wed Aug 04 12:16:08 2021
committerYi Chou <yich@google.com>Fri Aug 20 02:54:58 2021
treedb374e6828ab769a41cfa06a799937fbf55b5b36
parent659963b6d511894ae4513aa2e7233fdb04c683d8 [diff]
pinweaver: add fuzzer

Fuzzing result of pinweaver.c:

Regions: 735
Missed Regions: 9
Cover: 98.78%

Functions: 44
Missed Functions: 0
Executed: 100.00%

Lines: 1311
Missed Lines: 13
Cover: 99.01%

BUG=b:195016396
TEST=run fuzzer

Change-Id: I7835f82a97c20fa381a9e121fb5e1ff80b09b499
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/pinweaver/+/3070728
Tested-by: Yi Chou <yich@google.com>
Reviewed-by: Leo Lai <cylai@google.com>
Reviewed-by: Andrey Pronin <apronin@chromium.org>
Commit-Queue: Yi Chou <yich@google.com>
Auto-Submit: Yi Chou <yich@google.com>
6 files changed
tree: db374e6828ab769a41cfa06a799937fbf55b5b36
  1. eal/
  2. fuzzer/
  3. LICENSE
  4. OWNERS
  5. pinweaver.c
  6. pinweaver.h
  7. pinweaver_eal.h
  8. pinweaver_types.h
  9. PRESUBMIT.cfg
  10. README.md
README.md

Common PinWeaver Code

This directory contains reference PinWeaver code that can be used across implementation platforms.

It consists of:

  • PinWeaver reference code:
    • pinweaver.h - PinWeaver embedded API definition
    • pinweaver.c - implementation
    • pinweaver_eal.h - API for Environment Abstraction Layer (EAL) used by PinWeaver
      • note that some types used in this API are platform-specific and are defined in eal/**/pinweaver_eal_types.h
    • pinweaver_types.h - header that is shared by PinWeaver implementation and PinWeaver clients that call it through platform-specific interface.
  • Environment Abstraction Layer (EAL) implementations - in eal/ folder
    • eal/cr50 - implementation for cr50
      • pinweaver_eal_types.h - cr50-specific EAL API types
      • pinweaver_eal.c - cr50 implementation of EAL
    • eal/tpm_storage - implementation for platforms that use TPM as PinWeaver data storage
      • pinweaver_eal_types.h - TPM-storage-specific EAL API types
      • pinweaver_eal_tpm.h - additional EAL functions required by TPM storage
      • pinweaver_eal_linux.c - implementation of non-storage EAL methods for Linux case
      • tpm_storage_stubs.c - empty implementation of storage EAL methods
      • tpm_storage.c - implementation of storage EAL methods on top of TSS
      • mini_trunks/ - mini-TSS (TPM client software stack) used by TPM storage implementation
        • created from trunks TSS used by ChromeOS reduced to the minimal required set of TPM commands and ported from C++ to C
        • relies on pinweaver_eal.h + pinweaver_eal_tpm.h EAL methods
        • TSS API is defined in tss.h + *authorization_delegate.h

A platform implementation that uses TPM storage EAL option needs to implement all EAL methods implemented in pinweaver_eal_linux.c (or use it as-is, if Linux compatible).