Translations:Dm-crypt/111/en
From Gentoo Wiki
Note
XTS splits the key into two halves, only one being used for the actual encryption. That means "aes-xts" with a 512-bit key actually uses 256 bits for the AES part.
XTS splits the key into two halves, only one being used for the actual encryption. That means "aes-xts" with a 512-bit key actually uses 256 bits for the AES part.