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mirror of https://github.com/octoleo/restic.git synced 2024-11-14 01:04:05 +00:00

Add crypto debug benchmark

This commit is contained in:
Alexander Neumann 2020-12-23 10:46:53 +01:00
parent 0333ef3325
commit 271eabd239

View File

@ -3,11 +3,15 @@ package crypto_test
import (
"bytes"
"crypto/rand"
"encoding/json"
"io"
"os"
"testing"
"github.com/restic/restic/internal/crypto"
"github.com/restic/restic/internal/errors"
rtest "github.com/restic/restic/internal/test"
"golang.org/x/sync/errgroup"
"github.com/restic/chunker"
)
@ -279,24 +283,75 @@ func BenchmarkEncrypt(b *testing.B) {
}
}
func writeTempfile(name string, data []byte) {
f, err := os.Create("/tmp/" + name)
if err != nil {
panic(err)
}
_, err = f.Write(data)
if err != nil {
panic(err)
}
err = f.Close()
if err != nil {
panic(err)
}
}
func writeJSON(name string, data interface{}) {
buf, err := json.Marshal(data)
if err != nil {
panic(err)
}
writeTempfile(name, buf)
}
func BenchmarkDecrypt(b *testing.B) {
size := 8 << 20 // 8MiB
data := make([]byte, size)
data := rtest.Random(42, size)
k := crypto.NewRandomKey()
plaintext := make([]byte, 0, size)
ciphertext := make([]byte, 0, size+crypto.Extension)
nonce := crypto.NewRandomNonce()
ciphertext = k.Seal(ciphertext, nonce, data, nil)
var err error
b.ResetTimer()
b.SetBytes(int64(size))
for i := 0; i < b.N; i++ {
_, err = k.Open(plaintext, nonce, ciphertext, nil)
rtest.OK(b, err)
var wg errgroup.Group
for i := 0; i < 5; i++ {
wg.Go(func() error {
buf := make([]byte, len(ciphertext))
for i := 0; i < b.N; i++ {
buf = buf[:cap(buf)]
copy(buf, ciphertext)
result, err := k.Open(buf[:0], nonce, buf, nil)
rtest.OK(b, err)
if !bytes.Equal(data, result) {
writeJSON("benchmark-decrypt-encryption-key.raw", k.EncryptionKey)
writeJSON("benchmark-decrypt-mac-key.raw", k.MACKey)
writeTempfile("benchmark-decrypt-nonce.raw", nonce)
writeTempfile("benchmark-decrypt-ciphertext.raw", ciphertext)
writeTempfile("benchmark-decrypt-plaintext.raw", data)
writeTempfile("benchmark-decrypt-result.raw", result)
return errors.New("wrong plaintext")
}
}
return nil
})
}
err := wg.Wait()
if err != nil {
b.Fatal(err)
}
}