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libgocryptfs
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speed: add code comments

This commit is contained in:
Jakob Unterwurzacher 2020-02-29 21:26:28 +01:00
parent fdfaa849f8
commit f82b9caa9c
1 changed files with 12 additions and 5 deletions
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17
internal/speed/speed.go
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@ -16,6 +16,12 @@ import (
"github.com/rfjakob/gocryptfs/internal/stupidgcm" "github.com/rfjakob/gocryptfs/internal/stupidgcm"
) )
// 128-bit file ID + 64 bit block number = 192 bits = 24 bytes
const adLen = 24
// gocryptfs uses fixed-size 4 kiB blocks
const blockSize = 4096
// Run - run the speed the test and print the results. // Run - run the speed the test and print the results.
func Run() { func Run() {
bTable := []struct { bTable := []struct {
@ -60,14 +66,13 @@ func randBytes(n int) []byte {
return b return b
} }
const blockSize = 4096 // bStupidGCM benchmarks stupidgcm's openssl GCM
func bStupidGCM(b *testing.B) { func bStupidGCM(b *testing.B) {
if stupidgcm.BuiltWithoutOpenssl { if stupidgcm.BuiltWithoutOpenssl {
b.Skip("openssl has been disabled at compile-time") b.Skip("openssl has been disabled at compile-time")
} }
key := randBytes(32) key := randBytes(32)
authData := randBytes(24) authData := randBytes(adLen)
iv := randBytes(16) iv := randBytes(16)
in := make([]byte, blockSize) in := make([]byte, blockSize)
b.SetBytes(int64(len(in))) b.SetBytes(int64(len(in)))
@ -81,9 +86,10 @@ func bStupidGCM(b *testing.B) {
} }
} }
// bGoGCM benchmarks Go stdlib GCM
func bGoGCM(b *testing.B) { func bGoGCM(b *testing.B) {
key := randBytes(32) key := randBytes(32)
authData := randBytes(24) authData := randBytes(adLen)
iv := randBytes(16) iv := randBytes(16)
in := make([]byte, blockSize) in := make([]byte, blockSize)
b.SetBytes(int64(len(in))) b.SetBytes(int64(len(in)))
@ -104,9 +110,10 @@ func bGoGCM(b *testing.B) {
} }
} }
// bAESSIV benchmarks AES-SIV from github.com/jacobsa/crypto/siv
func bAESSIV(b *testing.B) { func bAESSIV(b *testing.B) {
key := randBytes(64) key := randBytes(64)
authData := randBytes(24) authData := randBytes(adLen)
iv := randBytes(16) iv := randBytes(16)
in := make([]byte, blockSize) in := make([]byte, blockSize)
b.SetBytes(int64(len(in))) b.SetBytes(int64(len(in)))