public void RunStructFldScenario(AesBinaryOpTest__DecryptLastByte testClass)
{
var result = Aes.DecryptLast(_fld1, _fld2);
Unsafe.Write(testClass._dataTable.outArrayPtr, result);
testClass.ValidateResult(testClass._dataTable.outArrayPtr);
}
protected Vector128 <byte> DecryptAes(Vector128 <byte> data)
{
if (DecryptionKey == null)
{
DecryptionKey = GenerateWorkingKey(Key, false);
}
data = Sse2.Xor(data, DecryptionKey[Rounds]);
// unrolled for performance
if (Rounds > 12)
{
data = Aes.Decrypt(data, DecryptionKey[13]);
data = Aes.Decrypt(data, DecryptionKey[12]);
}
if (Rounds > 10)
{
data = Aes.Decrypt(data, DecryptionKey[11]);
data = Aes.Decrypt(data, DecryptionKey[10]);
}
data = Aes.Decrypt(data, DecryptionKey[9]);
data = Aes.Decrypt(data, DecryptionKey[8]);
data = Aes.Decrypt(data, DecryptionKey[7]);
data = Aes.Decrypt(data, DecryptionKey[6]);
data = Aes.Decrypt(data, DecryptionKey[5]);
data = Aes.Decrypt(data, DecryptionKey[4]);
data = Aes.Decrypt(data, DecryptionKey[3]);
data = Aes.Decrypt(data, DecryptionKey[2]);
data = Aes.Decrypt(data, DecryptionKey[1]);
return(Aes.DecryptLast(data, DecryptionKey[0]));
}
public override unsafe void Decrypt(ReadOnlySpan <byte> source, Span <byte> destination)
{
base.Decrypt(source, destination);
Vector128 <byte> t;
fixed(byte *s = source)
{
t = Sse2.LoadVector128(s);
}
t = Sse2.Xor(t, _k14);
t = Aes.Decrypt(t, _k15);
t = Aes.Decrypt(t, _k16);
t = Aes.Decrypt(t, _k17);
t = Aes.Decrypt(t, _k18);
t = Aes.Decrypt(t, _k19);
t = Aes.Decrypt(t, _k20);
t = Aes.Decrypt(t, _k21);
t = Aes.Decrypt(t, _k22);
t = Aes.Decrypt(t, _k23);
t = Aes.Decrypt(t, _k24);
t = Aes.Decrypt(t, _k25);
t = Aes.Decrypt(t, _k26);
t = Aes.Decrypt(t, _k27);
t = Aes.DecryptLast(t, _k0);
fixed(byte *d = destination)
{
Sse2.Store(d, t);
}
}
public void RunClassFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassFldScenario));
var result = Aes.DecryptLast(_fld1, _fld2);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunClassLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassLclFldScenario));
var test = new AesBinaryOpTest__DecryptLastByte();
var result = Aes.DecryptLast(test._fld1, test._fld2);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
private Vector128 <byte> DecryptBlock(Vector128 <byte> data)
{
data = Sse2.Xor(data, _roundKeys.Last());
for (int i = _roundKeys.Length - 2; i > 0; i--)
{
data = Aes.Decrypt(data, _roundKeys[i]);
}
return(Aes.DecryptLast(data, _roundKeys[0]));
}
public void RunStructLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunStructLclFldScenario));
var test = TestStruct.Create();
var result = Aes.DecryptLast(test._fld1, test._fld2);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunLclVarScenario_LoadAligned()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunLclVarScenario_LoadAligned));
var left = Aes.LoadAlignedVector128((Byte *)(_dataTable.inArray1Ptr));
var right = Aes.LoadAlignedVector128((Byte *)(_dataTable.inArray2Ptr));
var result = Aes.DecryptLast(left, right);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunLclVarScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunLclVarScenario_UnsafeRead));
var left = Unsafe.Read <Vector128 <Byte> >(_dataTable.inArray1Ptr);
var right = Unsafe.Read <Vector128 <Byte> >(_dataTable.inArray2Ptr);
var result = Aes.DecryptLast(left, right);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunBasicScenario_Load()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunBasicScenario_Load));
var result = Aes.DecryptLast(
Aes.LoadVector128((Byte *)(_dataTable.inArray1Ptr)),
Aes.LoadVector128((Byte *)(_dataTable.inArray2Ptr))
);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunStructLclFldScenario_Load()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunStructLclFldScenario_Load));
var test = TestStruct.Create();
var result = Aes.DecryptLast(
Aes.LoadVector128((Byte *)(&test._fld1)),
Aes.LoadVector128((Byte *)(&test._fld2))
);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
public void RunStructFldScenario_Load(AesBinaryOpTest__DecryptLastByte testClass)
{
fixed(Vector128 <Byte> *pFld1 = &_fld1)
fixed(Vector128 <Byte> *pFld2 = &_fld2)
{
var result = Aes.DecryptLast(
Aes.LoadVector128((Byte *)(pFld1)),
Aes.LoadVector128((Byte *)(pFld2))
);
Unsafe.Write(testClass._dataTable.outArrayPtr, result);
testClass.ValidateResult(testClass._dataTable.outArrayPtr);
}
}
public void RunClassFldScenario_Load()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassFldScenario_Load));
fixed(Vector128 <Byte> *pFld1 = &_fld1)
fixed(Vector128 <Byte> *pFld2 = &_fld2)
{
var result = Aes.DecryptLast(
Aes.LoadVector128((Byte *)(pFld1)),
Aes.LoadVector128((Byte *)(pFld2))
);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.outArrayPtr);
}
}
public static AesVector RawDecryptBlock(AesVector block, Span <AesVector> keySchedule)
{
block = Sse2.Xor(block, keySchedule[10 + 0]);
block = Aes.Decrypt(block, keySchedule[10 + 1]);
block = Aes.Decrypt(block, keySchedule[10 + 2]);
block = Aes.Decrypt(block, keySchedule[10 + 3]);
block = Aes.Decrypt(block, keySchedule[10 + 4]);
block = Aes.Decrypt(block, keySchedule[10 + 5]);
block = Aes.Decrypt(block, keySchedule[10 + 6]);
block = Aes.Decrypt(block, keySchedule[10 + 7]);
block = Aes.Decrypt(block, keySchedule[10 + 8]);
block = Aes.Decrypt(block, keySchedule[10 + 9]);
block = Aes.DecryptLast(block, keySchedule[0]);
return(block);
}
public override void DecryptBlock(ref byte ciphertext, ref byte plaintext)
{
var block = Unsafe.ReadUnaligned <Vector128 <byte> >(ref ciphertext);
block = Sse2.Xor(block, _keys.Key0);
block = Aes.Decrypt(block, _keys.Key1);
block = Aes.Decrypt(block, _keys.Key2);
block = Aes.Decrypt(block, _keys.Key3);
block = Aes.Decrypt(block, _keys.Key4);
block = Aes.Decrypt(block, _keys.Key5);
block = Aes.Decrypt(block, _keys.Key6);
block = Aes.Decrypt(block, _keys.Key7);
block = Aes.Decrypt(block, _keys.Key8);
block = Aes.Decrypt(block, _keys.Key9);
block = Aes.DecryptLast(block, _keys.Key10);
Unsafe.WriteUnaligned(ref plaintext, block);
}
public override void DecryptBlock(ReadOnlySpan <byte> ciphertext, Span <byte> plaintext)
{
var block = Unsafe.ReadUnaligned <Vector128 <byte> >(ref MemoryMarshal.GetReference(ciphertext));
block = Sse2.Xor(block, _keys.Key0);
block = Aes.Decrypt(block, _keys.Key1);
block = Aes.Decrypt(block, _keys.Key2);
block = Aes.Decrypt(block, _keys.Key3);
block = Aes.Decrypt(block, _keys.Key4);
block = Aes.Decrypt(block, _keys.Key5);
block = Aes.Decrypt(block, _keys.Key6);
block = Aes.Decrypt(block, _keys.Key7);
block = Aes.Decrypt(block, _keys.Key8);
block = Aes.Decrypt(block, _keys.Key9);
block = Aes.DecryptLast(block, _keys.Key10);
Unsafe.WriteUnaligned(ref MemoryMarshal.GetReference(plaintext), block);
}
public override ulong Run(CancellationToken cancellationToken)
{
if (!Aes.IsSupported)
{
return(0uL);
}
var iterations = 0uL;
var cipherTextSpan = new Span <int>(cipherText);
var plainTextSpan = new Span <int>(Enumerable.Repeat(0, plainText.Length).ToArray());
unsafe
{
fixed(int *cipherTextPointer = cipherTextSpan)
fixed(int *plainTextPointer = plainTextSpan)
{
while (!cancellationToken.IsCancellationRequested)
{
for (var j = 0; j < LENGTH; j++)
{
var cipherTextVector = Sse2.LoadVector128(cipherTextPointer);
var workingCopy = Sse2.Xor(cipherTextVector, loadedEncryptionKey[10]).As <int, byte>();
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[11].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[12].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[13].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[14].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[15].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[16].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[17].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[18].As <int, byte>());
workingCopy = Aes.Decrypt(workingCopy, loadedEncryptionKey[19].As <int, byte>());
workingCopy = Aes.DecryptLast(workingCopy, loadedEncryptionKey[0].As <int, byte>());
Sse2.Store(plainTextPointer, workingCopy.As <byte, int>());
}
iterations++;
}
}
}
return(iterations);
}
private void Decrypt(Span <byte> data)
{
Vector128 <byte>[] keys = roundKeys;
Span <Vector128 <byte> > blocks = MemoryMarshal.Cast <byte, Vector128 <byte> >(data);
for (int i = 0; i < blocks.Length; i++)
{
Vector128 <byte> b = blocks[i];
b = Sse2.Xor(b, keys[10]);
b = Aes.Decrypt(b, keys[19]);
b = Aes.Decrypt(b, keys[18]);
b = Aes.Decrypt(b, keys[17]);
b = Aes.Decrypt(b, keys[16]);
b = Aes.Decrypt(b, keys[15]);
b = Aes.Decrypt(b, keys[14]);
b = Aes.Decrypt(b, keys[13]);
b = Aes.Decrypt(b, keys[12]);
b = Aes.Decrypt(b, keys[11]);
b = Aes.DecryptLast(b, keys[0]);
blocks[i] = b;
}
}
