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ubifs: Enable authentication support

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With the preparations all being done this patch now enables authentication
support for UBIFS. Authentication is enabled when the newly introduced
auth_key and auth_hash_name mount options are passed. auth_key provides
the key which is used for authentication whereas auth_hash_name provides
the hashing algorithm used for this FS. Passing these options make
authentication mandatory and only UBIFS images that can be authenticated
with the given key are allowed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Sascha Hauer
2018-09-07 14:36:45 +02:00
committed by Richard Weinberger
parent 1e76592f2c
commit d8a22773a1
3 changed files with 52 additions and 1 deletions
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7
Documentation/filesystems/ubifs.txt
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@@ -91,6 +91,13 @@ chk_data_crc do not skip checking CRCs on data nodes
compr=none override default compressor and set it to "none"
compr=lzo override default compressor and set it to "lzo"
compr=zlib override default compressor and set it to "zlib"
auth_key= specify the key used for authenticating the filesystem.
Passing this option makes authentication mandatory.
The passed key must be present in the kernel keyring
and must be of type 'logon'
auth_hash_name= The hash algorithm used for authentication. Used for
both hashing and for creating HMACs. Typical values
include "sha256" or "sha512"
Quick usage instructions