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ANDROID: dm-default-key: Update key size for wrapped keys

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Wrapped keys can have key sizes of variable length.
Pass in the wrapped key size sent from userspace instead
of using a fixed value from the cipher when calling into
blk-crypto.

Bug: 156230001

Test: Validated metadata encryption with wrappedkey_v0 when /data
      is mounted on a dm device.
      fstab: metadata_encryption=aes-256-xts:wrappedkey_v0

Git-repo: https://android.googlesource.com/kernel/common/
Change-Id: I9c8bfff71eaf783427270766c419feceefb6be2d
Signed-off-by: Gaurav Kashyap <gaurkash@codeaurora.org>
This commit is contained in:
Gaurav Kashyap 2020-05-11 09:16:19 -07:00
commit c96d48845a
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-default-key.c
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@ -230,7 +230,7 @@ static int default_key_ctr(struct dm_target *ti, unsigned int argc, char **argv)
goto bad;
}
err = blk_crypto_init_key(&dkc->key, raw_key, cipher->key_size,
err = blk_crypto_init_key(&dkc->key, raw_key, raw_key_size,
dkc->is_hw_wrapped, cipher->mode_num,
dkc->sector_size);
if (err) {