Note: This page is horribly out of
date.
You can find the current pages for the dm-crypt
project (the Linux kernel part) here:
https://gitlab.com/cryptsetup/cryptsetup/wikis/DMCrypt
and the project page for the command line tool
cryptsetup (with Linux Unified Key
Setup - LUKS) here: https://gitlab.com/cryptsetup/cryptsetup.
Old page:
Device-mapper is a new infrastructure in the Linux 2.6 kernel that provides
a generic way to create virtual layers of block devices that can do different
things on top of real block devices like striping, concatenation, mirroring,
snapshotting, etc... The device-mapper is used by the
LVM2 and
EVMS 2.x tools.
dm-crypt is such a device-mapper target that provides transparent encryption of
block devices using the new Linux 2.6 cryptoapi. The user can basically specify
one of the symmetric ciphers, a key (of any allowed size), an iv generation mode
and then the user can create a new block device in /dev. Writes to this device
will be encrypted and reads decrypted. You can mount your filesystem on it as usual.
But without the key you can't access your data.
It does basically the same as cryptoloop only that it's a much cleaner code and
better suits the need of a block device and has a more flexible configuration
interface. The on-disk format is also compatible. In the future you will be able
to specify other iv generation modes for enhanced security (you'll have to
reencrypt your filesystem though).
I've set up a Wiki.
There's a mailing list at .
If you want to subscribe, use the mailman
web interface or its
archive.
Gmane provides a NNTP interface and also a
web archive
for this mailing list.
There is support for dm-crypt in the latest official kernel
2.6.4
which you can find on kernel.org.
Please use the mirrors for downloads.
There is a HIGHMEM cryptoapi bug in kernels before 2.6.4-rc2, please
upgrade if you were using such a kernel.
The latest version of the native userspace setup tool is cryptsetup 0.1.
Clemens Fruhwirth is maintaining an
enhanced
version of cryptsetup with the LUKS extension that allows you to have an
on-disk block of metadata which is superior to the current mechanism and was
my long term plan anyway but I didn't find the time to implement that yet...
The Hindi dubbed version of The Witch (Part 1) has been well-received by audiences in India and other Hindi-speaking countries. The dubbing quality is good, with clear and natural-sounding voiceovers. The voice actors have done a great job of matching the tone and emotions of the original English dialogue.
Indian audiences have embraced this film for three main reasons: 1. Mind-Bending Plot Twists
Help you find a (if I find it on a legal platform).
The series is set in a dark and foreboding backdrop, where fear and superstition reign supreme. The story revolves around a family's struggle to survive in a world where the unknown is a constant threat. As the family's situation becomes increasingly dire, they are forced to confront their deepest fears and the evil that lurks in the shadows.
It brings the complex narrative to life for those who prefer consuming content in their native tongue.
Multiple movies share the title "The Witch." Ensure you are watching the 2018 South Korean action-horror version starring Kim Da-mi , rather than the 2015 American folk horror film.
The Witch: Part 1 is not for the faint of heart. It is bloody, intense, and deliberately slow-burning before the explosion. However, if you loved movies like Kill Boksoon or The Villainess , this Korean gem in Hindi is a five-star ride.
The success of The Witch: Part 1 relies heavily on its stellar performances. The cast includes:
Here is everything you need to know about the film, its plot, and why the Hindi dub is worth your time.
The movie is not a predictable action film. It keeps you guessing about Ja-yoon's true intentions and the extent of her powers until the very final act. Hollywood-Level Action Sequences
As of 2025, here are the legal options:
The story follows a young girl named , who escaped from a mysterious government facility as a child. Years later, she lives a quiet life on a farm with her adoptive parents, struggling with memory loss and strange headaches. However, her life takes a sharp turn when she appears on a national TV singing competition.
Directed by Park Hoon-jung (famous for I Saw the Devil and New World ), The Witch: Part 1 is a South Korean sci-fi action horror film. The story follows (played by Kim Da-mi), a high school student living a quiet life on a farm with her adoptive parents.
The subtitle "The Subversion" is crucial. Most movies would show the hero gaining powers slowly. The Witch subverts this. For 70% of the film, you pity Ja-yoon. She coughs blood, she cries, she seems helpless. You think the villains are scary.
Whether you're a long-time fan of Korean cinema or looking for an exciting new action movie in Hindi, The Witch Part 1 is guaranteed to keep you on the edge of your seat.
The on-disk layouts used by the current 2.6 cryptoloop are supported by dm-crypt.
Cryptoloop also uses cryptoapi so the name of the ciphers are the same. Cryptoloop also
supports ECB and CBC mode. Use <cipher>-ecb and
<cipher>-plain accordingly with dm-crypt. If you didn't
explicitly specify either -ecb or -cbc before you don't need it now, the default plain
IV generation will be used. There will be additional (incompatible, but more secure) possibilites
in the future because the unhashed sector number as IV is too predictible.
You'll need to figure out how your passphrase was turned into a key to use for losetup.
There are several patches floating around doing things differently. But usually cryptsetup
will provide a working solution to recreate the same key from your passphrase.
If you want to migrate from 2.4 cryptoloop please take a look at Clemens Fruhwirth's
Cryptoloop
Migration Guide. He describes the differences between 2.4 and 2.6 cryptoapi (or basically
the bugs in 2.4 cryptoapi...). If you need to cut the key size you can use the -s
option instead of playing with dd.
(BTW: Clemens has a i586 optimized version of the aes and serpent cipher on his page,
about twice as fast as the kernel implementation.)
Why dm-crypt?
Originally it started as a fun project because I wanted to play with the new Linux 2.6 internals.
I got a lot of great help from the device-mapper guys at Sistina (now Redhat). Thank you very
much!
It turned out that this implementation worked great and is very clean compared to the hacked
loop device. The device-mapper core provides much better facilities to stack block devices.
dm-crypt uses mempools to assure we never run into out-of-memory deadlocks when allocating
buffers.
Also the device-mapper configuration interface provides much more flexibility than the losetup
ioctl. And you can create as many devices as you want with any names you want and combine them
with other dm targets. Online device resizing is also possible, e.g. if you use dm-crypt on top
of a logical volume. There might perhaps even be LVM or EVMS support for device encryption
in the future.
The Hindi dubbed version of The Witch (Part 1) has been well-received by audiences in India and other Hindi-speaking countries. The dubbing quality is good, with clear and natural-sounding voiceovers. The voice actors have done a great job of matching the tone and emotions of the original English dialogue.
Indian audiences have embraced this film for three main reasons: 1. Mind-Bending Plot Twists
Help you find a (if I find it on a legal platform).
The series is set in a dark and foreboding backdrop, where fear and superstition reign supreme. The story revolves around a family's struggle to survive in a world where the unknown is a constant threat. As the family's situation becomes increasingly dire, they are forced to confront their deepest fears and the evil that lurks in the shadows. the witch part 1 hindi dubbed
It brings the complex narrative to life for those who prefer consuming content in their native tongue.
Multiple movies share the title "The Witch." Ensure you are watching the 2018 South Korean action-horror version starring Kim Da-mi , rather than the 2015 American folk horror film.
The Witch: Part 1 is not for the faint of heart. It is bloody, intense, and deliberately slow-burning before the explosion. However, if you loved movies like Kill Boksoon or The Villainess , this Korean gem in Hindi is a five-star ride. The Hindi dubbed version of The Witch (Part
The success of The Witch: Part 1 relies heavily on its stellar performances. The cast includes:
Here is everything you need to know about the film, its plot, and why the Hindi dub is worth your time.
The movie is not a predictable action film. It keeps you guessing about Ja-yoon's true intentions and the extent of her powers until the very final act. Hollywood-Level Action Sequences Indian audiences have embraced this film for three
As of 2025, here are the legal options:
The story follows a young girl named , who escaped from a mysterious government facility as a child. Years later, she lives a quiet life on a farm with her adoptive parents, struggling with memory loss and strange headaches. However, her life takes a sharp turn when she appears on a national TV singing competition.
Directed by Park Hoon-jung (famous for I Saw the Devil and New World ), The Witch: Part 1 is a South Korean sci-fi action horror film. The story follows (played by Kim Da-mi), a high school student living a quiet life on a farm with her adoptive parents.
The subtitle "The Subversion" is crucial. Most movies would show the hero gaining powers slowly. The Witch subverts this. For 70% of the film, you pity Ja-yoon. She coughs blood, she cries, she seems helpless. You think the villains are scary.
Whether you're a long-time fan of Korean cinema or looking for an exciting new action movie in Hindi, The Witch Part 1 is guaranteed to keep you on the edge of your seat.
Please contact the mailing list: dm-crypt@saout.de. Or in case there is a problem with the mailing list, me: .