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saschahauerrichardweinberger
saschahauer
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richardweinberger
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ubifs: Add helper functions for authentication support
This patch adds the various helper functions needed for authentication support. We need functions to hash nodes, to embed HMACs into a node and to compare hashes and HMACs. Most functions first check if this filesystem is authenticated and bail out early if not, which makes the functions safe to be called with disabled authentication. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
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‎fs/ubifs/Kconfig

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@@ -7,6 +7,7 @@ config UBIFS_FS
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select CRYPTO if UBIFS_FS_ZLIB
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select CRYPTO_LZO if UBIFS_FS_LZO
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select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
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select CRYPTO_HASH_INFO
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depends on MTD_UBI
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help
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UBIFS is a file system for flash devices which works on top of UBI.

‎fs/ubifs/Makefile

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@@ -8,3 +8,4 @@ ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o debug.o
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ubifs-y += misc.o
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ubifs-$(CONFIG_UBIFS_FS_ENCRYPTION) += crypto.o
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ubifs-$(CONFIG_UBIFS_FS_XATTR) += xattr.o
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ubifs-$(CONFIG_UBIFS_FS_AUTHENTICATION) += auth.o

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