dm-crypt: a device-mapper crypto target

dm-crypt: a device-mapper crypto target
http://www.saout.de/misc/dm-crypt/

In Linux kernel Source: /Documentation/device-mapper/dm-crypt.txt

dm-crypt: Linux kernel device-mapper crypto target
http://code.google.com/p/cryptsetup/wiki/DMCrypt

[wiki] dm-crypt
http://en.wikipedia.org/wiki/Dm-crypt

[Gentoo] 使用 dm-crypt 做磁碟加密
http://www.csie.nctu.edu.tw/~lylai/disk-cryptography.html

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Required kernel config:
CONFIG_BLK_DEV_DM
CONFIG_DM_CRYPT

(add required crypto support)
CONFIG_CRYPTO_AES

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cryptsetup -y -c aes -s 256 create crypt_disk /dev/sda1
mkfs.ext3 /dev/mapper/crypt_disk
mount /dev/mapper/crypt_disk /mnt

umount /mnt
cryptsetup remove crypt_disk