mbedtls: add config option to compile with hkdf

This adds a config option to allow compiling with HKDF algorithm support
to support applications that require this feature.

Signed-off-by: Etan Kissling <etan_kissling@apple.com>
This commit is contained in:
Etan Kissling 2021-01-13 01:01:24 +01:00 committed by Daniel Golle
parent 39add246c1
commit 02abd99f89
1 changed files with 18 additions and 1 deletions

View File

@ -21,7 +21,9 @@ PKG_LICENSE:=GPL-2.0-or-later
PKG_LICENSE_FILES:=gpl-2.0.txt
PKG_CPE_ID:=cpe:/a:arm:mbed_tls
PKG_CONFIG_DEPENDS:=CONFIG_LIBMBEDTLS_DEBUG_C
PKG_CONFIG_DEPENDS := \
CONFIG_LIBMBEDTLS_DEBUG_C \
CONFIG_LIBMBEDTLS_HKDF_C
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk
@ -57,6 +59,14 @@ config LIBMBEDTLS_DEBUG_C
by around 60 KiB (for an ARMv5 platform).
Usually, you don't need this, so don't select this if you're unsure.
config LIBMBEDTLS_HKDF_C
depends on PACKAGE_libmbedtls
bool "Enable the HKDF algorithm (RFC 5869)"
default n
help
This option adds support for the Hashed Message Authentication Code
(HMAC)-based key derivation function (HKDF).
endef
define Package/mbedtls-util
@ -97,6 +107,13 @@ define Build/Configure
END { exit(rc) }' $(PKG_BUILD_DIR)/include/mbedtls/config.h \
>$(PKG_BUILD_DIR)/include/mbedtls/config.h.new && \
mv $(PKG_BUILD_DIR)/include/mbedtls/config.h.new $(PKG_BUILD_DIR)/include/mbedtls/config.h
awk 'BEGIN { rc = 1 } \
/#define MBEDTLS_HKDF_C/ { $$$$0 = "$(if $(CONFIG_LIBMBEDTLS_HKDF_C),,// )#define MBEDTLS_HKDF_C"; rc = 0 } \
{ print } \
END { exit(rc) }' $(PKG_BUILD_DIR)/include/mbedtls/config.h \
>$(PKG_BUILD_DIR)/include/mbedtls/config.h.new && \
mv $(PKG_BUILD_DIR)/include/mbedtls/config.h.new $(PKG_BUILD_DIR)/include/mbedtls/config.h
endef
define Build/InstallDev