title: Is there a ARM processor support on-chip hardware random number generator?
body: <p>Intel supports RDRAND (also known as Intel secure key) instruction for returning random numbers. And it's available in Ivy Bridge processors.</p>
  <p>I wonder, is there any ARM processor featuring instructions for on-chip hw random number generator functionally similar to RDRAND?</p>
  <p>And I have an additional question.</p>
  <p>In the Linux kernel (version 3.10), there are driver sources for hw random number generators in <code>/linux/drivers/char/hw_random</code>. (<a href="http://lxr.free-electrons.com/source/drivers/char/hw_random/?v=3.10" rel="nofollow noreferrer">http://lxr.free-electrons.com/source/drivers/char/hw_random/?v=3.10</a>)</p>
  <p>And I found <code>exynos-rng.c</code> described as Random Number Generator driver for the exynos.</p>
  <p>So, does exynos has H/W random number generator like Intel processors?</p>
  <p>Thanks. Any comments are really appreciated.</p>