Hey guys...

i have an idea for hiding an encrypted filesystem on a normal audio cd...
can anyone see any problems or drawbacks ?

this is my idea...
create a small audio cd... approxamatly 100 megabytes.
then take the audio cd image, and add 550 megabytes of junk from /dev/urandom to the end.

then use dm-crypt (kernel level device encryption) to encrypt the 650mb image, and pass an offset varable of 100 megabyes, to start the file system AFTER the audiocd part.

im no expert on audio cd file systems... but what im hopng will happen, is when this cd is inserte into a computer or normal audio cd-player, the machine think its a normal audiocd... and plays the music...

but when i run the script to mount the cd as an encypted filesystem with an offset of 100megs, it will act an an encrypted data cd...

am i correct in my assumptions ?

I think it will work. Mounting with offset is rather low-level, so it should be mounted. What I think may be a problem is to properly close the audio cd (not to get noise at the end), but I think it's doable.

hmm. but audio CD's have some kind of file sytem that gies the deevice a number of tracks... if the audio cd ISO image has 6 tracks, surely the player will stop playing after track 6 and ignore the garbage ?

anyways.. ill burn a test cd and report back how it went... thanX