[eureka]

On Kindle Touch 5.3.2

devcap-encrypt -i /etc/deviceConfig.conf /tmp/deviceConfig.decrypted.conf

will create INI-like file:

Spoiler:

# Groups are started by a header line containing the group name enclosed in '[' and ']',
# and ended implicitly by the start of the next group or the end of the file. 
# The group common contains features common to all devices, the remaining groups are devices associated with the platform.
# If feature.available=value does not exist its value will be assumed as false by default.
# For example audio.available key not existing means that there is no audio available.
# Please make sure the entries added here are not part of values calculated at runtime. Those value will be overwritten.
# For example varlocal.size will be overwritten by the value obtained from the ioctl call.
[common]
screen.available=true
screen.dpi=167
screen.resolution.width=600
screen.resolution.height=800
framebuffer.stride=608
wifi.available=true
touch.available=true
touch.proc=/proc/touch
button.home.available=true
usb.available=true
audio.available=true
accessory.available=true
adtcp.available=false
menu.wireless.available=true
archivepurchasedate.update=true
verticalswipe.available=true
[whitney]
wan.available=true
[whitney_wfo]

Obviously, it's the source for devcap-get-feature tool:

# devcap-get-feature -a audio
1
# devcap-get-feature -s audio available
true
# devcap-get-feature -i screen dpi
167