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+rng-tools provide rngd and rngtest.
+
+rngd supplies data from a hardware RNG to the kernel's entropy pool. To ensure
+sufficient randomness, rngd verifies the RNGs data using FIPS 140-1 / 140-2
+randomness tests, before passing them to the kernel.
+
+rngtest is a standalone tool for running the FIPS tests over data.