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Content Tagged with encryption + HOWTO

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As a network security professional, I occasionally need to save data relating to an investigation to a DVD. The data is often sensitive and requires encryption.

I found great tutorials at HOWTO Burn Encrypted DVDs and HOWTO Compile an aespipe Program

Below is my brief step-by-step guide. (Detailed information can be found at the above links.)

Note: Requirements aespipe (I use Debian Linux, which would loop-aes-modules)

Step 1:
Create a directory with the files you want to save on CD (or DVD).
In this example, we'll create a directory named WALDO.

Step 2 (you will be prompted to enter a passphrase):

$ yes "" dd of=image.iso bs=512 count=16
$ head -c 2925 /dev/random uuencode -m - head -n 66 tail -n 65 \
gpg --symmetric -a dd of=image.iso conv=notrunc

Step 3:
$ mkisofs -quiet -r WALDO aespipe -K WALDO.iso -O 16 >> WALDO.iso

Step 4: Test it by mounting on loopback

$ mount -t iso9660 WALDO.iso /cdrom -o \
loop,encryption=AES128,gpgkey=WALDO.iso,offset=8192

Step 5: Burn the iso (k3b works fine)

Step 6: mount the cd via fstab entry or:
$ mount -t iso9660 /dev/cdrom /cdrom -o \
loop,encryption=AES128,gpgkey=/dev/cdrom,offset=8192

Post provided by Mary M. Chaddock