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dm-crypt: Document integrity_key_size option.

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This patch adds documentation for new option introduced in commit
4441686b24 ("dm-crypt: Allow to specify the integrity key size as option").

Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
This commit is contained in:
Milan Broz 2025-01-29 13:58:57 +01:00 committed by Mikulas Patocka
parent d8955df383
commit 8892606045
1 changed files with 5 additions and 0 deletions
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5
Documentation/admin-guide/device-mapper/dm-crypt.rst
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@ -146,6 +146,11 @@ integrity:<bytes>:<type>
integrity for the encrypted device. The additional space is then
used for storing authentication tag (and persistent IV if needed).
integrity_key_size:<bytes>
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:<bytes>
Use <bytes> as the encryption unit instead of 512 bytes sectors.
This option can be in range 512 - 4096 bytes and must be power of two.