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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package des
import "testing"
func TestInitialPermute(t *testing.T) {
for i := uint(0); i < 64; i++ {
bit := uint64(1) << i
got := permuteInitialBlock(bit)
want := uint64(1) << finalPermutation[63-i]
if got != want {
t.Errorf("permute(%x) = %x, want %x", bit, got, want)
}
}
}
func TestFinalPermute(t *testing.T) {
for i := uint(0); i < 64; i++ {
bit := uint64(1) << i
got := permuteFinalBlock(bit)
want := uint64(1) << initialPermutation[63-i]
if got != want {
t.Errorf("permute(%x) = %x, want %x", bit, got, want)
}
}
}