hw.model: Intel(R) Core(TM) i7 CPU         970  @ 3.20GHz
x newsha256.times
+ oldsha256.times
+--------------------------------------------------------------------------+
| x                                                                      + |
| x                                                                      + |
| x                                                                      ++|
| x                                                                      ++|
| x                                                                      ++|
|xxxx x                                                                  ++|
||A_|                                                                    A||
+--------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x  10       5.99681      6.041835      6.006794     6.0108109   0.013687669
+  10      6.700031      6.714302      6.708388     6.7083808  0.0035690957
Difference at 95.0% confidence
	0.69757 +/- 0.00939809
	11.6053% +/- 0.156353%
	(Student's t, pooled s = 0.0100023)