Pure Go VRF implementation benchmarking

gistfile1.txt

goos: linux
goarch: amd64
pkg: github.com/algorand/go-algorand/crypto
cpu: Intel(R) Xeon(R) CPU @ 2.30GHz
BenchmarkVrfVerifyGo-2    	signal: interrupt
FAIL	github.com/algorand/go-algorand/crypto	1.863s
goos: linux
goarch: amd64
pkg: github.com/algorand/go-algorand/crypto
cpu: Intel(R) Xeon(R) CPU @ 2.30GHz
BenchmarkVrfVerifyGo-2    	    3171	    370247 ns/op
BenchmarkProveBytes-2     	    4530	    297956 ns/op
BenchmarkProveBytesGo-2   	    4254	    277794 ns/op
BenchmarkVrfVerify-2      	    3204	    367954 ns/op
PASS
ok  	github.com/algorand/go-algorand/crypto	7.559s
goos: linux
goarch: amd64
pkg: github.com/algorand/go-algorand/crypto
cpu: Intel(R) Xeon(R) CPU @ 2.30GHz
BenchmarkVrfVerifyGo-2    	    3222	    370731 ns/op
BenchmarkProveBytes-2     	    4578	    294118 ns/op
BenchmarkProveBytesGo-2   	    4240	    276197 ns/op
BenchmarkVrfVerify-2      	    3175	    371328 ns/op
PASS
ok  	github.com/algorand/go-algorand/crypto	7.594s
goos: linux
goarch: amd64
pkg: github.com/algorand/go-algorand/crypto
cpu: Intel(R) Xeon(R) CPU @ 2.30GHz
BenchmarkVrfVerifyGo-2    	    3198	    371191 ns/op
BenchmarkProveBytes-2     	    4428	    301747 ns/op
BenchmarkProveBytesGo-2   	    4124	    275489 ns/op
BenchmarkVrfVerify-2      	    3302	    368198 ns/op
PASS
ok  	github.com/algorand/go-algorand/crypto	7.580s
goos: linux
goarch: amd64
pkg: github.com/algorand/go-algorand/crypto
cpu: Intel(R) Xeon(R) CPU @ 2.30GHz
BenchmarkVrfVerifyGo-2    	    3172	    370009 ns/op
BenchmarkProveBytes-2     	    4429	    300346 ns/op
BenchmarkProveBytesGo-2   	    4256	    278068 ns/op
BenchmarkVrfVerify-2      	    3352	    364596 ns/op
PASS
ok  	github.com/algorand/go-algorand/crypto	7.641s