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mbedtls: add config option to compile with hkdf

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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 CN_SZTL
parent ed2dc1c007
commit 675e7b17bc
No known key found for this signature in database
GPG Key ID: 6850B6345C862176
1 changed files with 32 additions and 1 deletions
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33
package/libs/mbedtls/Makefile
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@ -21,7 +21,10 @@ 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_HAVE_SSE2
PKG_CONFIG_DEPENDS := \
CONFIG_LIBMBEDTLS_DEBUG_C \
CONFIG_LIBMBEDTLS_HAVE_SSE2 \
CONFIG_LIBMBEDTLS_HKDF_C
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk
@ -46,6 +49,18 @@ $(call Package/mbedtls/Default)
endef
define Package/libmbedtls/config
config LIBMBEDTLS_DEBUG_C
depends on PACKAGE_libmbedtls
bool "Enable debug functions"
default n
help
This option enables mbedtls library's debug functions.
It increases the uncompressed libmbedtls binary size
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_HAVE_SSE2
depends on PACKAGE_libmbedtls
bool
@ -59,6 +74,14 @@ config LIBMBEDTLS_HAVE_SSE2
support them, such as Geode GX and LX. In this case you may
save 23KB by saying yes here. AMD Geode NX, and Intel
Pentium 4 and above support SSE2.
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
@ -94,11 +117,19 @@ define Build/Configure
$(Build/Configure/Default)
awk 'BEGIN { rc = 1 } \
/#define MBEDTLS_DEBUG_C/ { $$$$0 = "$(if $(CONFIG_LIBMBEDTLS_DEBUG_C),,// )#define MBEDTLS_DEBUG_C"; rc = 0 } \
/#define MBEDTLS_HAVE_SSE2/ { $$$$0 = "$(if $(CONFIG_LIBMBEDTLS_HAVE_SSE2),,// )#define MBEDTLS_HAVE_SSE2"; rc = 0 } \
{ print } \
END { exit(rc) }' $(PKG_BUILD_DIR)/include/mbedtls/config.h \
>$(PKG_BUILD_DIR)/include/mbedtls/config.h.new && \
mv $(PKG_BUILD_DIR)/include/mbedtls/config.h.new $(PKG_BUILD_DIR)/include/mbedtls/config.h
awk 'BEGIN { rc = 1 } \
/#define MBEDTLS_HKDF_C/ { $$$$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