2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 13:13:57 +08:00
linux-next/fs/crypto
Nathan Huckleberry 6b2a51ff03 fscrypt: Add HCTR2 support for filename encryption
HCTR2 is a tweakable, length-preserving encryption mode that is intended
for use on CPUs with dedicated crypto instructions.  HCTR2 has the
property that a bitflip in the plaintext changes the entire ciphertext.
This property fixes a known weakness with filename encryption: when two
filenames in the same directory share a prefix of >= 16 bytes, with
AES-CTS-CBC their encrypted filenames share a common substring, leaking
information.  HCTR2 does not have this problem.

More information on HCTR2 can be found here: "Length-preserving
encryption with HCTR2": https://eprint.iacr.org/2021/1441.pdf

Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-06-10 16:40:18 +08:00
..
bio.c block: pass a block_device and opf to bio_reset 2022-02-02 07:50:00 -07:00
crypto.c fscrypt: split up FS_CRYPTO_BLOCK_SIZE 2022-04-13 15:03:09 -07:00
fname.c fscrypt: split up FS_CRYPTO_BLOCK_SIZE 2022-04-13 15:03:09 -07:00
fscrypt_private.h fscrypt: Add HCTR2 support for filename encryption 2022-06-10 16:40:18 +08:00
hkdf.c fscrypt: allow 256-bit master keys with AES-256-XTS 2021-09-22 11:29:38 -07:00
hooks.c fscrypt: add fscrypt_symlink_getattr() for computing st_size 2021-07-25 20:01:06 -07:00
inline_crypt.c fscrypt: log when starting to use inline encryption 2022-04-13 22:35:25 -07:00
Kconfig fscrypt: relax Kconfig dependencies for crypto API algorithms 2021-04-22 17:31:32 +10:00
keyring.c fscrypt: add new helper functions for test_dummy_encryption 2022-05-09 16:18:54 -07:00
keysetup_v1.c fscrypt: stop pretending that key setup is nofs-safe 2020-09-22 06:48:42 -07:00
keysetup.c fscrypt: Add HCTR2 support for filename encryption 2022-06-10 16:40:18 +08:00
Makefile fscrypt: add inline encryption support 2020-07-08 10:29:30 -07:00
policy.c fscrypt: Add HCTR2 support for filename encryption 2022-06-10 16:40:18 +08:00