66 lines
1.2 KiB
Go
66 lines
1.2 KiB
Go
package restic_test
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import (
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"bytes"
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"crypto/sha256"
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"io"
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"math/rand"
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"testing"
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"github.com/restic/restic"
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"github.com/restic/restic/chunker"
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)
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func get_random(seed, count int) []byte {
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buf := make([]byte, count)
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rnd := rand.New(rand.NewSource(23))
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for i := 0; i < count; i += 4 {
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r := rnd.Uint32()
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buf[i] = byte(r)
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buf[i+1] = byte(r >> 8)
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buf[i+2] = byte(r >> 16)
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buf[i+3] = byte(r >> 24)
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}
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return buf
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}
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const bufSize = chunker.MiB
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func BenchmarkChunkEncrypt(b *testing.B) {
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data := get_random(23, 10<<20) // 10MiB
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rd := bytes.NewReader(data)
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be := setupBackend(b)
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defer teardownBackend(b, be)
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key := setupKey(b, be, "geheim")
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chunkBuf := make([]byte, restic.CiphertextExtension+chunker.MaxSize)
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b.ResetTimer()
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b.SetBytes(int64(len(data)))
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for i := 0; i < b.N; i++ {
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rd.Seek(0, 0)
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ch := chunker.New(rd, bufSize, sha256.New)
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for {
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chunk, err := ch.Next()
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if err == io.EOF {
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break
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}
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ok(b, err)
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// reduce length of chunkBuf
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chunkBuf = chunkBuf[:chunk.Length]
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n, err := io.ReadFull(chunk.Reader(rd), chunkBuf)
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ok(b, err)
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assert(b, uint(n) == chunk.Length, "invalid length: got %d, expected %d", n, chunk.Length)
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_, err = key.Encrypt(chunkBuf, chunkBuf)
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ok(b, err)
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}
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}
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}
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