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-rw-r--r--doc/rngseed.html5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/rngseed.html b/doc/rngseed.html
index d08f56c..cbd29ab 100644
--- a/doc/rngseed.html
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@@ -125,6 +125,11 @@ seed file management. </li>
point of view.
<tt>rngseed -r</tt> reads from the file (and unlinks it) and writes to the kernel
RNG. <tt>rngseed -w</tt> reads from the kernel RNG and writes to the file. </li>
+ <li> It is a good idea to use <tt>rngseed -rw</tt> at boot time, rather than
+<tt>rngseed -r</tt>. This ensures that a seed file will be present on next boot
+even if the system doesn't undergo a clean shutdown (e.g. the power fails).
+Of course, this does not preclude running <tt>rngseed -w</tt> in the shutdown
+sequence, so the next boot runs with the freshest possible seed. </li>
<li> <tt>rngseed</tt> is inspired by Jason Donenfeld's
<a href="https://git.zx2c4.com/seedrng/about/">seedrng</a> program. It is,
however, an independent implementation of the same concept. </li>