Kconfig 1.9 KB

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  1. # SPDX-License-Identifier: GPL-2.0-only
  2. config FS_ENCRYPTION
  3. bool "FS Encryption (Per-file encryption)"
  4. select CRYPTO
  5. select CRYPTO_HASH
  6. select CRYPTO_SKCIPHER
  7. select CRYPTO_LIB_SHA256
  8. select KEYS
  9. help
  10. Enable encryption of files and directories. This
  11. feature is similar to ecryptfs, but it is more memory
  12. efficient since it avoids caching the encrypted and
  13. decrypted pages in the page cache. Currently Ext4,
  14. F2FS and UBIFS make use of this feature.
  15. # Filesystems supporting encryption must select this if FS_ENCRYPTION. This
  16. # allows the algorithms to be built as modules when all the filesystems are,
  17. # whereas selecting them from FS_ENCRYPTION would force them to be built-in.
  18. #
  19. # Note: this option only pulls in the algorithms that filesystem encryption
  20. # needs "by default". If userspace will use "non-default" encryption modes such
  21. # as Adiantum encryption, then those other modes need to be explicitly enabled
  22. # in the crypto API; see Documentation/filesystems/fscrypt.rst for details.
  23. #
  24. # Also note that this option only pulls in the generic implementations of the
  25. # algorithms, not any per-architecture optimized implementations. It is
  26. # strongly recommended to enable optimized implementations too. It is safe to
  27. # disable these generic implementations if corresponding optimized
  28. # implementations will always be available too; for this reason, these are soft
  29. # dependencies ('imply' rather than 'select'). Only disable these generic
  30. # implementations if you're sure they will never be needed, though.
  31. config FS_ENCRYPTION_ALGS
  32. tristate
  33. imply CRYPTO_AES
  34. imply CRYPTO_CBC
  35. imply CRYPTO_CTS
  36. imply CRYPTO_ECB
  37. imply CRYPTO_HMAC
  38. imply CRYPTO_SHA512
  39. imply CRYPTO_XTS
  40. config FS_ENCRYPTION_INLINE_CRYPT
  41. bool "Enable fscrypt to use inline crypto"
  42. depends on FS_ENCRYPTION && BLK_INLINE_ENCRYPTION
  43. help
  44. Enable fscrypt to use inline encryption hardware if available.