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Add crypto debug benchmark
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parent
0333ef3325
commit
271eabd239
@ -3,11 +3,15 @@ package crypto_test
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import (
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"bytes"
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"crypto/rand"
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"encoding/json"
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"io"
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"os"
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"testing"
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"github.com/restic/restic/internal/crypto"
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"github.com/restic/restic/internal/errors"
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rtest "github.com/restic/restic/internal/test"
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"golang.org/x/sync/errgroup"
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"github.com/restic/chunker"
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)
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@ -279,24 +283,75 @@ func BenchmarkEncrypt(b *testing.B) {
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}
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}
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func writeTempfile(name string, data []byte) {
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f, err := os.Create("/tmp/" + name)
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if err != nil {
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panic(err)
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}
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_, err = f.Write(data)
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if err != nil {
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panic(err)
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}
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err = f.Close()
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if err != nil {
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panic(err)
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}
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}
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func writeJSON(name string, data interface{}) {
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buf, err := json.Marshal(data)
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if err != nil {
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panic(err)
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}
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writeTempfile(name, buf)
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}
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func BenchmarkDecrypt(b *testing.B) {
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size := 8 << 20 // 8MiB
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data := make([]byte, size)
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data := rtest.Random(42, size)
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k := crypto.NewRandomKey()
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plaintext := make([]byte, 0, size)
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ciphertext := make([]byte, 0, size+crypto.Extension)
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nonce := crypto.NewRandomNonce()
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ciphertext = k.Seal(ciphertext, nonce, data, nil)
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var err error
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b.ResetTimer()
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b.SetBytes(int64(size))
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for i := 0; i < b.N; i++ {
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_, err = k.Open(plaintext, nonce, ciphertext, nil)
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rtest.OK(b, err)
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var wg errgroup.Group
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for i := 0; i < 5; i++ {
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wg.Go(func() error {
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buf := make([]byte, len(ciphertext))
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for i := 0; i < b.N; i++ {
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buf = buf[:cap(buf)]
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copy(buf, ciphertext)
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result, err := k.Open(buf[:0], nonce, buf, nil)
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rtest.OK(b, err)
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if !bytes.Equal(data, result) {
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writeJSON("benchmark-decrypt-encryption-key.raw", k.EncryptionKey)
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writeJSON("benchmark-decrypt-mac-key.raw", k.MACKey)
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writeTempfile("benchmark-decrypt-nonce.raw", nonce)
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writeTempfile("benchmark-decrypt-ciphertext.raw", ciphertext)
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writeTempfile("benchmark-decrypt-plaintext.raw", data)
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writeTempfile("benchmark-decrypt-result.raw", result)
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return errors.New("wrong plaintext")
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}
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}
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return nil
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})
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}
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err := wg.Wait()
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if err != nil {
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b.Fatal(err)
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}
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}
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