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-rw-r--r--src/security/vboot/Kconfig11
1 files changed, 11 insertions, 0 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)