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host_keyblock: Fix vb2_create_keyblock_external

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939cc3a "futility: Use only vboot 2.0 APIs for keyblocks" introduced
2 subtle bugs, and we could still pass unit tests. Until we start
adding more signing algorithms and sig_data_size != 0.

BUG=chromium:611535
BRANCH=none
TEST=make runtests

Change-Id: Ief95e5ab773185b59276cf06d1efaa29f1212466
Reviewed-on: https://chromium-review.googlesource.com/448399
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Nicolas Boichat
2017-03-02 22:35:32 +08:00
committed by chrome-bot
parent 50d1282e85
commit e0a3f85a46
1 changed files with 2 additions and 1 deletions
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3
host/lib/host_keyblock.c
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@@ -95,7 +95,7 @@ struct vb2_keyblock *vb2_create_keyblock_external(
return NULL;
uint32_t signed_size = sizeof(struct vb2_keyblock) + data_key->key_size;
uint32_t sig_data_size = vb2_rsa_sig_size(algorithm);
uint32_t sig_data_size = vb2_rsa_sig_size(vb2_crypto_to_signature(algorithm));
uint32_t block_size =
signed_size + VB2_SHA512_DIGEST_SIZE + sig_data_size;
@@ -135,6 +135,7 @@ struct vb2_keyblock *vb2_create_keyblock_external(
vb2_external_signature((uint8_t*)h, signed_size,
signing_key_pem_file, algorithm,
external_signer);
vb2_copy_signature(&h->keyblock_signature, sigtmp);
free(sigtmp);
/* Return the header */