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Diffstat (limited to 'Documentation/filesystems/fscrypt.rst')
| -rw-r--r-- | Documentation/filesystems/fscrypt.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/filesystems/fscrypt.rst b/Documentation/filesystems/fscrypt.rst index 08c23b60e016..87d4e266ffc8 100644 --- a/Documentation/filesystems/fscrypt.rst +++ b/Documentation/filesystems/fscrypt.rst @@ -191,7 +191,9 @@ Currently, the following pairs of encryption modes are supported: If unsure, you should use the (AES-256-XTS, AES-256-CTS-CBC) pair. AES-128-CBC was added only for low-powered embedded devices with -crypto accelerators such as CAAM or CESA that do not support XTS. +crypto accelerators such as CAAM or CESA that do not support XTS. To +use AES-128-CBC, CONFIG_CRYPTO_SHA256 (or another SHA-256 +implementation) must be enabled so that ESSIV can be used. Adiantum is a (primarily) stream cipher-based mode that is fast even on CPUs without dedicated crypto instructions. It's also a true |