Re: [PATCH] efi_loader: simplify tcg2_create_digest()

On 22.04.21 13:32, Ilias Apalodimas wrote:

Bumping the digest list count, for all supported algorithms, can be calculated outside of the individual switch statements. So let's do that for every loop iteration instead and simplify the code a bit.

Signed-off-by: Ilias Apalodimas ilias.apalodimas@linaro.org

Reviewed-by: Heinrich Schuchardt xypron.glpk@gmx.de

---

lib/efi_loader/efi_tcg2.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/lib/efi_loader/efi_tcg2.c b/lib/efi_loader/efi_tcg2.c index d5eca68769b0..94e8f22bbb69 100644 --- a/lib/efi_loader/efi_tcg2.c +++ b/lib/efi_loader/efi_tcg2.c @@ -535,30 +535,27 @@ static efi_status_t tcg2_create_digest(const u8 *input, u32 length, sha1_starts(&ctx); sha1_update(&ctx, input, length); sha1_finish(&ctx, final);

• 	digest_list->count++;
  break;
  

  case TPM2_ALG_SHA256: sha256_starts(&ctx_256); sha256_update(&ctx_256, input, length); sha256_finish(&ctx_256, final);

• 	digest_list->count++;
  break;
  

  case TPM2_ALG_SHA384: sha384_starts(&ctx_512); sha384_update(&ctx_512, input, length); sha384_finish(&ctx_512, final);

• 	digest_list->count++;
  break;
  

  case TPM2_ALG_SHA512: sha512_starts(&ctx_512); sha512_update(&ctx_512, input, length); sha512_finish(&ctx_512, final);

• 	digest_list->count++;
  break;
  

  default: EFI_PRINT("Unsupported algorithm %x\n", hash_alg); return EFI_INVALID_PARAMETER; }

• digest_list->count++;
  

  digest_list->digests[i].hash_alg = hash_alg; memcpy(&digest_list->digests[i].digest, final, (u32)alg_to_len(hash_alg)); }