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| author | Christian Lamparter <chunkeey@googlemail.com> | 2011-08-15 18:09:54 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-24 18:41:42 (GMT) |
| commit | 00044f17afd36bf6397b9a2a12f242a057449e9a (patch) | |
| tree | 5b216a3fa13357b352bebd28272e0698380a2b54 /drivers/net/wireless/ath/carl9170/Kconfig | |
| parent | acf1771221f2877ab5d36487930cd6a2ecaa73e6 (diff) | |
| download | linux-00044f17afd36bf6397b9a2a12f242a057449e9a.tar.xz | |
carl9170: export HW random number generator
All AR9170 hardware have a 16-Bit random number generator.
The documentation claims the values are suitable for
"security keys".
The "throughput" is around 320Kibit/s. It's slow, but it
does work without introducing any special offload
firmware commands.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/carl9170/Kconfig')
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/carl9170/Kconfig b/drivers/net/wireless/ath/carl9170/Kconfig index 2d1b821..267d5dc 100644 --- a/drivers/net/wireless/ath/carl9170/Kconfig +++ b/drivers/net/wireless/ath/carl9170/Kconfig @@ -39,3 +39,17 @@ config CARL9170_WPC bool depends on CARL9170 && (INPUT = y || INPUT = CARL9170) default y + +config CARL9170_HWRNG + bool "Random number generator" + depends on CARL9170 && (HW_RANDOM = y || HW_RANDOM = CARL9170) + default n + help + Provides a hardware random number generator to the kernel. + + SECURITY WARNING: It's relatively easy to eavesdrop all + generated random numbers from the transport stream with + usbmon [software] or special usb sniffer hardware. + + Say N, unless your setup[i.e.: embedded system] has no + other rng source and you can afford to take the risk. |