Re: [PATCH v25 12/12] LRNG - add interface for gathering of raw entropy
From: Randy Dunlap <hidden>
Date: 2019-11-19 17:18:39
Also in:
linux-crypto, lkml
Hi, On 11/16/19 1:38 AM, Stephan Müller wrote:
quoted hunk ↗ jump to hunk
diff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig index e6ca3acc1e48..4ccc710832ef 100644 --- a/drivers/char/lrng/Kconfig +++ b/drivers/char/lrng/Kconfig@@ -169,4 +169,20 @@ config LRNG_APT_CUTOFF default 325 if !LRNG_APT_BROKEN default 32 if LRNG_APT_BROKEN +config LRNG_TESTING + bool "Enable entropy test interface to LRNG noise source" + select CONFIG_DEBUG_FS
That should be spelled as DEBUG_FS and preferably would be "depends on" instead of 'select'.
+ help + The test interface allows a privileged process to capture + the raw unconditioned noise that is collected by the LRNG + for statistical analysis. Extracted noise data is not used + to seed the LRNG. + + The raw noise data can be obtained using the lrng_raw + debugfs file. Using the option lrng_testing.boot_test=1 + the raw noise of the first 1000 entropy events since boot + can be sampled. + + If unsure, say N. + endif # LRNG
thanks. -- ~Randy