diff --git a/Documentation/admin-guide/device-mapper/dm-crypt.rst b/Documentation/admin-guide/device-mapper/dm-crypt.rst index 9f8139ff97d6..4467f6d4b632 100644 --- a/Documentation/admin-guide/device-mapper/dm-crypt.rst +++ b/Documentation/admin-guide/device-mapper/dm-crypt.rst @@ -146,6 +146,11 @@ integrity:: integrity for the encrypted device. The additional space is then used for storing authentication tag (and persistent IV if needed). +integrity_key_size: + Optionally set the integrity key size if it differs from the digest size. + It allows the use of wrapped key algorithms where the key size is + independent of the cryptographic key size. + sector_size: Use as the encryption unit instead of 512 bytes sectors. This option can be in range 512 - 4096 bytes and must be power of two.