mirror of
https://github.com/luxfi/zapdb.git
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54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
/*
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* SPDX-FileCopyrightText: © 2017-2025 Istari Digital, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package y
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import (
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"crypto/aes"
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"crypto/rand"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestXORBlock(t *testing.T) {
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key := make([]byte, 32)
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_, _ = rand.Read(key)
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var iv []byte
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{
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b, err := aes.NewCipher(key)
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require.NoError(t, err)
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iv = make([]byte, b.BlockSize())
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_, _ = rand.Read(iv)
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t.Logf("Using %d size IV\n", len(iv))
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}
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src := make([]byte, 1024)
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_, _ = rand.Read(src)
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dst := make([]byte, 1024)
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err := XORBlock(dst, src, key, iv)
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require.NoError(t, err)
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act := make([]byte, 1024)
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err = XORBlock(act, dst, key, iv)
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require.NoError(t, err)
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require.Equal(t, src, act)
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// Now check if we can use the same byte slice as src and dst. While this is useful to know that
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// we can use src and dst as the same slice, this isn't applicable to Badger because we're
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// reading data right off mmap. We should not modify that data, so we have to use a different
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// slice for dst anyway.
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cp := append([]byte{}, src...)
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err = XORBlock(cp, cp, key, iv)
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require.NoError(t, err)
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require.Equal(t, dst, cp)
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err = XORBlock(cp, cp, key, iv)
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require.NoError(t, err)
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require.Equal(t, src, cp)
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}
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