10-22-2008
Wired keyboard sniffing
Are we safe using the everyday wired keyboard? Although this concept is old, I had never seen an actual implementation on the matter until a few days ago. (Four ways of sniffing the electromagnetic emanations of wired keyboards currently on the market in up to 20 meters.)
Check the videos at: http:// lasecwww dot epfl dot ch/keyboard (avoiding referrers)
Any comments?
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itemap(1M) itemap(1M)
NAME
itemap - load an ITE (Internal Terminal Emulator) keyboard mapping.
SYNOPSIS
[options]
DESCRIPTION
The command loads a keyboard mapping into the ITE (the graphics console driver), or displays ITE keyboard mappings. is run by automati-
cally. It is not usually explicitly invoked by the user.
Options
Dump a keymap to standard output in hexadecimal notation.
Load the specified keymap into the kernel mapping table
used for keyboards.
Interactively prompt for a
keyboard mapping. scans the keymap database file for all mapping names beginning with a prefix. Each of these names is
displayed, and one must be selected.
The name of the keymap database file to be used for input.
The default is
Load the appropriate keymap.
scans the hardware for a keyboard, determines the language of that keyboard, and loads the keymap corresponding to that
keyboard.
Because cannot determine the language of keyboards, use the option when using with keyboards.
Load a specified keyboard map.
Once loaded, ITE uses the specified mapping.
When loading a keyboard mapping with the option, matches the suffix of the name of the specified keyboard mapping with
those found in to determine the keyboard language. This information is used by the ITE to perform ISO 7-to-8 bit conver-
sion. Keymap names added by users, via
should use the same suffixes as those already used in For example, a French keyboard mapping can be named for consistency
with existing and mappings. A mapping called would not match any suffix patterns found by itemap, and would result in
incorrect ISO 7-to-8 bit conversion.
Load the specified keymap into the kernel mapping table
used for keyboards.
Perform actions verbosely.
If a keymap for a
keyboard is loaded, write its name to file_name.
EXAMPLES
To automatically install the correct mapping for an keyboard:
To explicitly load the mapping for an keyboard:
To explicitly load the mapping for a keyboard:
To interactively choose a keyboard mapping:
To generate a list of the available keyboard mappings:
FILES
Keymap database editor
System keymap database
Contains mapping name configured for keyboards
SEE ALSO
ps2(7), termio(7), keymap_ed(1X111).
itemap(1M)