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From: Eric Biggers <ebiggers@kernel.org>
To: Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>,
	Daeho Jeong <daehojeong@google.com>
Cc: fstests@vger.kernel.org, linux-fscrypt@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [PATCH 0/5] xfstests: test f2fs compression+encryption
Date: Tue, 6 Oct 2020 20:48:29 -0700
Message-ID: <20201007034829.GA912@sol.localdomain> (raw)
In-Reply-To: <20201001002508.328866-1-ebiggers@kernel.org>

On Wed, Sep 30, 2020 at 05:25:02PM -0700, Eric Biggers wrote:
> Add a test which verifies that encryption is done correctly when a file
> on f2fs uses both compression and encryption at the same time.
> 
> Patches 1-4 add prerequisites for the test, while patch 5 adds the
> actual test.  Patch 2 also fixes a bug which could cause the existing
> test generic/602 to fail in extremely rare cases.  See the commit
> messages for details.
> 
> The new test passes both with and without the inlinecrypt mount option.
> It requires CONFIG_F2FS_FS_COMPRESSION=y.
> 
> I'd appreciate the f2fs developers taking a look.
> 
> Note, there is a quirk where the IVs in compressed files are off by one
> from the "natural" values.  It's still secure, though it made the test
> slightly harder to write.  I'm not sure how intentional this quirk was.
> 
> Eric Biggers (5):
>   fscrypt-crypt-util: clean up parsing --block-size and --inode-number
>   fscrypt-crypt-util: fix IV incrementing for --iv-ino-lblk-32
>   fscrypt-crypt-util: add --block-number option
>   common/f2fs: add _require_scratch_f2fs_compression()
>   f2fs: verify ciphertext of compressed+encrypted file

Jaegeuk, Chao, Daeho: any comments on this?

- Eric

  parent reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01  0:25 Eric Biggers
2020-10-01  0:25 ` [PATCH 1/5] fscrypt-crypt-util: clean up parsing --block-size and --inode-number Eric Biggers
2020-10-01  0:25 ` [PATCH 2/5] fscrypt-crypt-util: fix IV incrementing for --iv-ino-lblk-32 Eric Biggers
2020-10-01  0:25 ` [PATCH 3/5] fscrypt-crypt-util: add --block-number option Eric Biggers
2020-10-01  0:25 ` [PATCH 4/5] common/f2fs: add _require_scratch_f2fs_compression() Eric Biggers
2020-10-01  0:25 ` [PATCH 5/5] f2fs: verify ciphertext of compressed+encrypted file Eric Biggers
2020-10-07  3:48 ` Eric Biggers [this message]
2020-10-07  4:27   ` [f2fs-dev] [PATCH 0/5] xfstests: test f2fs compression+encryption Daeho Jeong

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