aboutsummaryrefslogtreecommitdiff
path: root/src/random.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/random.h')
-rw-r--r--src/random.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/random.h b/src/random.h
index 2f9c0f5a36..75d037738d 100644
--- a/src/random.h
+++ b/src/random.h
@@ -43,6 +43,7 @@
* - RandAddSeedSleep() seeds everything that fast seeding includes, but additionally:
* - A high-precision timestamp before and after sleeping 1ms.
* - (On Windows) Once every 10 minutes, performance monitoring data from the OS.
+ - - Once every minute, strengthen the entropy for 10 ms using repeated SHA512.
* These just exploit the fact the system is idle to improve the quality of the RNG
* slightly.
*
@@ -51,6 +52,7 @@
* - 256 bits from the hardware RNG (rdseed or rdrand) when available.
* - (On Windows) Performance monitoring data from the OS.
* - (On Windows) Through OpenSSL, the screen contents.
+ * - Strengthen the entropy for 100 ms using repeated SHA512.
*
* When mixing in new entropy, H = SHA512(entropy || old_rng_state) is computed, and
* (up to) the first 32 bytes of H are produced as output, while the last 32 bytes