f5f6acfb1c
Add support for inline encryption to fs/crypto/. With "inline encryption", the block layer handles the decryption/encryption as part of the bio, instead of the filesystem doing the crypto itself via Linux's crypto API. This model is needed in order to take advantage of the inline encryption hardware present on most modern mobile SoCs. To use inline encryption, the filesystem needs to be mounted with '-o inlinecrypt'. The contents of any AES-256-XTS encrypted files will then be encrypted using blk-crypto, instead of using the traditional filesystem-layer crypto. fscrypt still provides the key and IV to use, and the actual ciphertext on-disk is still the same; therefore it's testable using the existing fscrypt ciphertext verification tests. Note that since blk-crypto has a fallack to Linux's crypto API, this feature is usable and testable even without actual inline encryption hardware. Per-filesystem changes will be needed to set encryption contexts when submitting bios and to implement the 'inlinecrypt' mount option. This patch just adds the common code. Bug: 137270441 Test: tested as series; see Ie1b77f7615d6a7a60fdc9105c7ab2200d17636a8 Change-Id: I72e7e29db017404cdf7b5125718b5ba9590d31b4 Co-developed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Satya Tangirala <satyat@google.com> Link: https://patchwork.kernel.org/patch/11214761/
15 lines
335 B
Makefile
15 lines
335 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
|
|
obj-$(CONFIG_FS_ENCRYPTION) += fscrypto.o
|
|
|
|
fscrypto-y := crypto.o \
|
|
fname.o \
|
|
hkdf.o \
|
|
hooks.o \
|
|
keyring.o \
|
|
keysetup.o \
|
|
keysetup_v1.o \
|
|
policy.o
|
|
|
|
fscrypto-$(CONFIG_BLOCK) += bio.o
|
|
fscrypto-$(CONFIG_FS_ENCRYPTION_INLINE_CRYPT) += inline_crypt.o
|