This is the command yhsm-linux-add-entropy that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
yhsm-linux-add-entropy ‐ Seed the Linux entropy pool with data from YubiHSM TRNG
SYNOPSIS
yhsm-linux-add-entropy [options]
DESCRIPTION
The YubiHSM uses "Avalanche Noise" TRNG together with USB SOF jitter sampling to feed a
DRBG_CTR algorithm (NIST publication SP800-90). The result has been verified as being
random data of good quality by at least one third party cryptographer. ⟨http://
sartryck.idg.se/Art/Yubihsm_1_TW072011.html⟩
Use this program to add random data from the YubiHSM to the entropy pool of your Linux
operating system. This is useful whenever lots of random data is needed, such as when
generating chryptographic keys (GPG-keys), on a server terminating SSL sessions etc.
You may run this script from cron, or in a while-loop. Make sure it does not run at the
same time as something else accessing the YubiHSM though, or the two tasks may interrupt
each other ‐ probably making both fail.
OPTIONS
-D, --device
device file name (default: /dev/ttyACM0).
-v, --verbose
enable verbose operation.
-c, --count
number of iterations to run (default: 100).
-r, --ratio
bits per byte read to use. 8 is probably fine, but as a conservative default 2 is
used.
--debug
enable debug printout, including all data sent to/from YubiHSM.
EXIT STATUS
0 Entropy added successfully
1 Failure
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