Note: This page is horribly out of
date.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...
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Ultra-low latency streaming, 4K multi-camera switching, and spatial audio replication have closed the sensory gap between being at an event and watching it at home. Viewers can now customize their own media experience, choosing which camera angles to follow and which audio tracks to prioritize. Economic Implications for the Entertainment Industry
5. Cultural Shifts: From Passive Consumption to Collective Experience
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: Video game soundtracks, once a niche interest, now fill prestigious concert halls. Touring symphonies dedicated to the music of Final Fantasy , The Legend of Zelda , and Elden Ring translate digital experiences into communal, live acoustic events.
The live entertainment and popular media landscape in 2026 is defined by a "participation revolution," where the boundary between watching and doing has almost entirely vanished . Driven by a projected $264.78 billion market, the industry is shifting from passive consumption to immersive, hyper-personalized experiences.
The best content isn't in your queue. It's happening right now, in a room full of strangers, in real time. Don't miss the show.
Popular media has adopted the live commentary box. React channels on YouTube (where people watch trailers or music videos live) are essentially the color commentary of pop culture. Streamers like Kai Cenat or xQc draw 300,000 live viewers just to watch them watch other media.
Several core technologies have accelerated the intersection of live entertainment and popular media:
Today, live entertainment content refers to any performance or unscripted event experienced simultaneously by a distributed audience, broadcast via digital infrastructure. It includes:
The adult entertainment industry has undergone significant changes with the advent of digital technology and live streaming. Live adult video streaming has become increasingly popular, allowing users to interact with performers in real-time. This shift has raised concerns about the potential risks and consequences associated with live adult content, including exploitation, consent, and online safety.
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 rise of live XXX videos has transformed the adult entertainment industry in several ways:
The rapid evolution of consumer and production technology is pushing the boundaries of what "live entertainment" even means within popular media. Mixed Reality and Virtual Concerts
Sudden traffic spikes during live events cause stream buffering and crashes.
The rise of live streaming has been fueled by two major factors: live xxx videos
Ultra-low latency streaming, 4K multi-camera switching, and spatial audio replication have closed the sensory gap between being at an event and watching it at home. Viewers can now customize their own media experience, choosing which camera angles to follow and which audio tracks to prioritize. Economic Implications for the Entertainment Industry
5. Cultural Shifts: From Passive Consumption to Collective Experience
Deceased legends and aging icons are returning to the stage via holographic technology, blurring the line between live performance and digital replication. Productions like "ABBA Voyage" utilize cutting-edge digital avatars to deliver a highly authentic "live" concert experience nightly without the physical presence of the artists. This intersection of tech and nostalgia highlights how popular media can preserve and monetize live experiences indefinitely. The Economic Synergy of Cross-Media Partnerships The rise of live XXX videos has transformed
: Video game soundtracks, once a niche interest, now fill prestigious concert halls. Touring symphonies dedicated to the music of Final Fantasy , The Legend of Zelda , and Elden Ring translate digital experiences into communal, live acoustic events.
The live entertainment and popular media landscape in 2026 is defined by a "participation revolution," where the boundary between watching and doing has almost entirely vanished . Driven by a projected $264.78 billion market, the industry is shifting from passive consumption to immersive, hyper-personalized experiences.
The best content isn't in your queue. It's happening right now, in a room full of strangers, in real time. Don't miss the show. Viewers can now customize their own media experience,
Popular media has adopted the live commentary box. React channels on YouTube (where people watch trailers or music videos live) are essentially the color commentary of pop culture. Streamers like Kai Cenat or xQc draw 300,000 live viewers just to watch them watch other media.
Several core technologies have accelerated the intersection of live entertainment and popular media:
Today, live entertainment content refers to any performance or unscripted event experienced simultaneously by a distributed audience, broadcast via digital infrastructure. It includes:
The adult entertainment industry has undergone significant changes with the advent of digital technology and live streaming. Live adult video streaming has become increasingly popular, allowing users to interact with performers in real-time. This shift has raised concerns about the potential risks and consequences associated with live adult content, including exploitation, consent, and online safety.
Please contact the mailing list: dm-crypt@saout.de. Or in case there is a problem with the mailing list, me: .