diff options
| -rw-r--r-- | src/security/vboot/Kconfig | 11 | ||||
| -rw-r--r-- | src/security/vboot/vboot_logic.c | 4 |
2 files changed, 12 insertions, 3 deletions
diff --git a/src/security/vboot/Kconfig b/src/security/vboot/Kconfig index 094cbb9642..e7744786f6 100644 --- a/src/security/vboot/Kconfig +++ b/src/security/vboot/Kconfig @@ -369,6 +369,17 @@ config VBOOT_KEYBLOCK_PREAMBLE_FLAGS hex "Keyblock preamble flags" default 0x0 +config VBOOT_HASH_BLOCK_SIZE + hex + default 0x400 + help + Set the default hash size. Generally 1k is reasonable, but in some + cases it may improve hashing speed to increase the size. + + Note that this buffer is allocated in the stack. Although the + build should fail if the stack size is exceeded, it's something to + be aware of when changing the size. + endmenu # Keys endif # VBOOT endmenu # Verified Boot (vboot) diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c index dbaa883080..54c82244b6 100644 --- a/src/security/vboot/vboot_logic.c +++ b/src/security/vboot/vboot_logic.c @@ -19,8 +19,6 @@ /* The max hash size to expect is for SHA512. */ #define VBOOT_MAX_HASH_SIZE VB2_SHA512_DIGEST_SIZE -#define TODO_BLOCK_SIZE 1024 - /* exports */ vb2_error_t vb2ex_read_resource(struct vb2_context *ctx, @@ -144,7 +142,7 @@ static vb2_error_t hash_body(struct vb2_context *ctx, { uint64_t load_ts; uint32_t remaining; - uint8_t block[TODO_BLOCK_SIZE]; + uint8_t block[CONFIG_VBOOT_HASH_BLOCK_SIZE]; uint8_t hash_digest[VBOOT_MAX_HASH_SIZE]; const size_t hash_digest_sz = sizeof(hash_digest); size_t block_size = sizeof(block); |