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ANDROID: block: Prevent crypto fallback for wrapped keys

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blk-crypto-fallback does not support wrapped keys, hence
prevent falling back when program_key fails. Add 'is_hw_wrapped'
flag to blk-crypto-key to mention if the key is wrapped
when the key is initialized.

Bug: 147209885

Test: Validate FBE, simulate a failure in the underlying blk
      device and ensure the call fails without falling back
      to blk-crypto-fallback.

Change-Id: I8bc301ca1ac9e55ba6ab622e8325486916b45c56
Signed-off-by: Barani Muthukumaran <[email protected]>
This commit is contained in:
Barani Muthukumaran 2020-02-06 18:01:20 -08:00 • committed by Todd Kjos
commit 3ab1972984
10 changed files with 89 additions and 63 deletions
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2
drivers/md/dm-default-key.c
View file

@ -224,7 +224,7 @@ static int default_key_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
err = blk_crypto_init_key(&dkc->key, raw_key, cipher->key_size,
cipher->mode_num, dkc->sector_size);
false, cipher->mode_num, dkc->sector_size);
if (err) {
ti->error = "Error initializing blk-crypto key";
goto bad;