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bs64_test.go
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bs64_test.go
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package sm4bs
import (
"bytes"
"encoding/binary"
"math/bits"
"testing"
)
func newByte64(b byte) []byte {
ret := make([]byte, 8*BS64.bytes())
ret1 := ret
for i := 0; i < 8; i++ {
if b&1 == 1 {
for j := 0; j < BS64.bytes(); j++ {
ret1[j] = 0xff
}
}
ret1 = ret1[BS64.bytes():]
b = b >> 1
}
return ret
}
func newUint32x64(x uint32) []byte {
var bytes [4]byte
binary.BigEndian.PutUint32(bytes[:], x)
ret := newByte64(bytes[0])
ret = append(ret, newByte64(bytes[1])...)
ret = append(ret, newByte64(bytes[2])...)
return append(ret, newByte64(bytes[3])...)
}
func TestSbox64(t *testing.T) {
buffer := make([]byte, 64*BS64.bytes())
for i := 0; i < 256; i++ {
iBytes := newByte64(byte(i))
sbox64(&iBytes[0], &buffer[0])
expected := newByte64(sbox[i])
if !bytes.Equal(iBytes, expected) {
t.Fatalf("unexpected result for %v.", i)
}
}
}
func BenchmarkSbox64(b *testing.B) {
buffer := make([]byte, 64*BS64.bytes())
b.ReportAllocs()
b.ResetTimer()
x := newByte64(byte(14))
for i := 0; i < b.N; i++ {
sbox64(&x[0], &buffer[0])
}
}
func TestTao64(t *testing.T) {
x := make([]byte, 32*BS64.bytes())
buffer := make([]byte, 64*BS64.bytes())
expected := make([]byte, 32*BS64.bytes())
copy(x, newByte64(byte(0)))
copy(x[8*BS64.bytes():], newByte64(byte(1)))
copy(x[16*BS64.bytes():], newByte64(byte(2)))
copy(x[24*BS64.bytes():], newByte64(byte(3)))
copy(expected, newByte64(sbox[0]))
copy(expected[8*BS64.bytes():], newByte64(sbox[1]))
copy(expected[16*BS64.bytes():], newByte64(sbox[2]))
copy(expected[24*BS64.bytes():], newByte64(sbox[3]))
ret := BS64.tao(x, buffer)
if !bytes.Equal(ret, expected) {
t.Fatalf("unexpected tao result %x, %x", ret, expected)
}
}
func BenchmarkTao64(b *testing.B) {
x := make([]byte, 32*BS64.bytes())
buffer := make([]byte, 64*BS64.bytes())
copy(x, newByte64(byte(0)))
copy(x[8*BS64.bytes():], newByte64(byte(1)))
copy(x[16*BS64.bytes():], newByte64(byte(2)))
copy(x[24*BS64.bytes():], newByte64(byte(3)))
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
BS64.tao(x, buffer)
}
}
func TestL64(t *testing.T) {
buffer := newUint32x64(0xa0a7aeb5)
b := uint32(0xa0a7aeb5) ^ uint32(0xe0e7eef5) ^ bits.RotateLeft32(0xe0e7eef5, 2) ^ bits.RotateLeft32(0xe0e7eef5, 10) ^ bits.RotateLeft32(0xe0e7eef5, 18) ^ bits.RotateLeft32(0xe0e7eef5, 24)
expected := newUint32x64(b)
x := newUint32x64(0xe0e7eef5)
ret := BS64.l(x, buffer)
if !bytes.Equal(ret, expected) {
t.Fatalf("unexpected l256 result, expected %x, got %x", expected, ret)
}
}
func BenchmarkL64(b *testing.B) {
x := make([]byte, 32*BS64.bytes())
buffer := make([]byte, 64*BS64.bytes())
copy(x, newByte64(byte(0)))
copy(x[8*BS64.bytes():], newByte64(byte(1)))
copy(x[16*BS64.bytes():], newByte64(byte(2)))
copy(x[24*BS64.bytes():], newByte64(byte(3)))
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
BS64.l(x, buffer)
}
}
func TestXorRK64(t *testing.T) {
b0 := newUint32x64(0xe0e7eef5)
b1 := newUint32x64(0xc0c7ced5)
b2 := newUint32x64(0xa0a7aeb5)
rk := make([]byte, 32*BS64.bytes())
k := uint32(0xa3b1bac6)
BS64.xorRK(k, rk, b0, b1, b2)
expected := newUint32x64(k ^ 0xe0e7eef5 ^ 0xc0c7ced5 ^ 0xa0a7aeb5)
if !bytes.Equal(expected, rk) {
t.Fatalf("unexpected xorRK result %x, %x", rk, expected)
}
}
func BenchmarkXorRK64(b *testing.B) {
b0 := make([]byte, 32*BS64.bytes())
b1 := make([]byte, 32*BS64.bytes())
b2 := make([]byte, 32*BS64.bytes())
rk := make([]byte, 32*BS64.bytes())
k := uint32(0xa3b1bac6)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
BS64.xorRK(k, rk, b0, b1, b2)
}
}
func TestBS64EncryptBlocks(t *testing.T) {
bitSize := BS64.bytes()
key := []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10}
expected := []byte{0x68, 0x1e, 0xdf, 0x34, 0xd2, 0x06, 0x96, 0x5e, 0x86, 0xb3, 0xe9, 0x4f, 0x53, 0x6e, 0x42, 0x46}
enc := make([]uint32, rounds)
dec := make([]uint32, rounds)
input := make([]byte, BlockSize*bitSize)
output := make([]byte, BlockSize*bitSize)
for i := 0; i < bitSize*8; i++ {
copy(input[i*16:], key)
}
expandKey(key, enc, dec)
//Encrypt
BS64.EncryptBlocks(enc, output, input)
for i := 0; i < bitSize*8; i++ {
if !bytes.Equal(expected, output[i*16:(i+1)*16]) {
t.Fatalf("unexpected encrypt result i=%v, %x", i, output[i*16:(i+1)*16])
}
}
// Decrypt
BS64.EncryptBlocks(dec, input, output)
for i := 0; i < bitSize*8; i++ {
if !bytes.Equal(key, input[i*16:(i+1)*16]) {
t.Fatalf("unexpected decrypt result i=%v, %x", i, input[i*16:(i+1)*16])
}
}
}
func BenchmarkEncrypt64Blocks(b *testing.B) {
bitSize := BS64.bytes()
key := []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10}
enc := make([]uint32, rounds)
dec := make([]uint32, rounds)
input := make([]byte, BlockSize*bitSize)
output := make([]byte, BlockSize*bitSize)
for i := 0; i < bitSize*8; i++ {
copy(input[i*16:], key)
}
expandKey(key, enc, dec)
b.SetBytes(int64(bitSize * BlockSize))
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
BS64.EncryptBlocks(enc, output, input)
}
}