crypto/rc4: naïve ARM assembly implementation
On 800MHz Cortex-A8:
benchmark old ns/op new ns/op delta
BenchmarkRC4_128 9395 2838 -69.79%
BenchmarkRC4_1K 74497 22120 -70.31%
BenchmarkRC4_8K 587243 171435 -70.81%
benchmark old MB/s new MB/s speedup
BenchmarkRC4_128 13.62 45.09 3.31x
BenchmarkRC4_1K 13.75 46.29 3.37x
BenchmarkRC4_8K 13.79 47.22 3.42x
Result for "OpenSSL 1.0.1c 10 May 2012" from Debian/armhf sid:
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
rc4 39553.81k 46522.39k 49336.11k 50085.63k 50258.06k
R=golang-dev, agl, dave
CC=golang-dev
https://golang.org/cl/
7310051