Don't loop in benchmarks. This gives much more stable results.
Don't loop in benchmarks. This gives much more stable results.

test cipher::block::des::tests::bench_expand          ... bench:          10 ns/iter (+/- 0)
test cipher::block::des::tests::bench_final_permute   ... bench:          17 ns/iter (+/- 2)
test cipher::block::des::tests::bench_initial_permute ... bench:          18 ns/iter (+/- 2)

gereeter/bad-crypto