private KdfParameters GetKdfParameters(bool bShowAdjustments)
{
KdfEngine kdf = GetKdf();
if (kdf == null)
{
Debug.Assert(false); return(null);
}
string strAdj = string.Empty;
KdfParameters pKdf = kdf.GetDefaultParameters();
if (kdf is AesKdf)
{
pKdf.SetUInt64(AesKdf.ParamRounds, (ulong)m_numKdfIt.Value);
}
else if (kdf is Argon2Kdf)
{
ulong uIt = (ulong)m_numKdfIt.Value;
AdjustKdfParam <ulong>(ref uIt, ">=", Argon2Kdf.MinIterations,
KPRes.Iterations, ref strAdj);
AdjustKdfParam <ulong>(ref uIt, "<=", Argon2Kdf.MaxIterations,
KPRes.Iterations, ref strAdj);
pKdf.SetUInt64(Argon2Kdf.ParamIterations, uIt);
// Adjust parallelism first, as memory depends on it
uint uPar = (uint)m_numKdfPar.Value;
AdjustKdfParam <uint>(ref uPar, ">=", Argon2Kdf.MinParallelism,
KPRes.Parallelism, ref strAdj);
uint uParMax = Argon2Kdf.MaxParallelism;
int cp = Environment.ProcessorCount;
if ((cp > 0) && (cp <= (int.MaxValue / 2)))
{
uParMax = Math.Min(uParMax, (uint)(cp * 2));
}
AdjustKdfParam <uint>(ref uPar, "<=", uParMax,
KPRes.Parallelism, ref strAdj);
pKdf.SetUInt32(Argon2Kdf.ParamParallelism, uPar);
ulong uMem = (ulong)m_numKdfMem.Value;
int iMemUnit = m_cmbKdfMem.SelectedIndex;
while (iMemUnit > 0)
{
if (uMem > (ulong.MaxValue / 1024UL))
{
uMem = ulong.MaxValue;
break;
}
uMem *= 1024UL;
--iMemUnit;
}
// 8*p blocks = 1024*8*p bytes minimum memory, see spec
Debug.Assert(Argon2Kdf.MinMemory == (1024UL * 8UL));
ulong uMemMin = Argon2Kdf.MinMemory * uPar;
AdjustKdfParam <ulong>(ref uMem, ">=", uMemMin,
KPRes.Memory, ref strAdj);
AdjustKdfParam <ulong>(ref uMem, "<=", Argon2Kdf.MaxMemory,
KPRes.Memory, ref strAdj);
pKdf.SetUInt64(Argon2Kdf.ParamMemory, uMem);
}
else
{
return(null); // Plugins may handle it
}
if (bShowAdjustments && (strAdj.Length > 0))
{
strAdj = KPRes.KdfAdjust + MessageService.NewParagraph + strAdj;
MessageService.ShowInfo(strAdj);
}
return(pKdf);
}
private static void TestArgon2()
{
#if DEBUG
Argon2Kdf kdf = new Argon2Kdf();
// ======================================================
// From the official Argon2 1.3 reference code package
// (test vector for Argon2d 1.3); also on
// https://tools.ietf.org/html/draft-irtf-cfrg-argon2-00
KdfParameters p = kdf.GetDefaultParameters();
kdf.Randomize(p);
Debug.Assert(p.GetUInt32(Argon2Kdf.ParamVersion, 0) == 0x13U);
byte[] pbMsg = new byte[32];
for (int i = 0; i < pbMsg.Length; ++i)
{
pbMsg[i] = 1;
}
p.SetUInt64(Argon2Kdf.ParamMemory, 32 * 1024);
p.SetUInt64(Argon2Kdf.ParamIterations, 3);
p.SetUInt32(Argon2Kdf.ParamParallelism, 4);
byte[] pbSalt = new byte[16];
for (int i = 0; i < pbSalt.Length; ++i)
{
pbSalt[i] = 2;
}
p.SetByteArray(Argon2Kdf.ParamSalt, pbSalt);
byte[] pbKey = new byte[8];
for (int i = 0; i < pbKey.Length; ++i)
{
pbKey[i] = 3;
}
p.SetByteArray(Argon2Kdf.ParamSecretKey, pbKey);
byte[] pbAssoc = new byte[12];
for (int i = 0; i < pbAssoc.Length; ++i)
{
pbAssoc[i] = 4;
}
p.SetByteArray(Argon2Kdf.ParamAssocData, pbAssoc);
byte[] pbExpc = new byte[32] {
0x51, 0x2B, 0x39, 0x1B, 0x6F, 0x11, 0x62, 0x97,
0x53, 0x71, 0xD3, 0x09, 0x19, 0x73, 0x42, 0x94,
0xF8, 0x68, 0xE3, 0xBE, 0x39, 0x84, 0xF3, 0xC1,
0xA1, 0x3A, 0x4D, 0xB9, 0xFA, 0xBE, 0x4A, 0xCB
};
byte[] pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-1");
}
// ======================================================
// From the official Argon2 1.3 reference code package
// (test vector for Argon2d 1.0)
p.SetUInt32(Argon2Kdf.ParamVersion, 0x10);
pbExpc = new byte[32] {
0x96, 0xA9, 0xD4, 0xE5, 0xA1, 0x73, 0x40, 0x92,
0xC8, 0x5E, 0x29, 0xF4, 0x10, 0xA4, 0x59, 0x14,
0xA5, 0xDD, 0x1F, 0x5C, 0xBF, 0x08, 0xB2, 0x67,
0x0D, 0xA6, 0x8A, 0x02, 0x85, 0xAB, 0xF3, 0x2B
};
pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-2");
}
// ======================================================
// From the official 'phc-winner-argon2-20151206.zip'
// (test vector for Argon2d 1.0)
p.SetUInt64(Argon2Kdf.ParamMemory, 16 * 1024);
pbExpc = new byte[32] {
0x57, 0xB0, 0x61, 0x3B, 0xFD, 0xD4, 0x13, 0x1A,
0x0C, 0x34, 0x88, 0x34, 0xC6, 0x72, 0x9C, 0x2C,
0x72, 0x29, 0x92, 0x1E, 0x6B, 0xBA, 0x37, 0x66,
0x5D, 0x97, 0x8C, 0x4F, 0xE7, 0x17, 0x5E, 0xD2
};
pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-3");
}
#if SELFTEST_ARGON2_LONG
// ======================================================
// Computed using the official 'argon2' application
// (test vectors for Argon2d 1.3)
p = kdf.GetDefaultParameters();
pbMsg = StrUtil.Utf8.GetBytes("ABC1234");
p.SetUInt64(Argon2Kdf.ParamMemory, (1 << 11) * 1024); // 2 MB
p.SetUInt64(Argon2Kdf.ParamIterations, 2);
p.SetUInt32(Argon2Kdf.ParamParallelism, 2);
pbSalt = StrUtil.Utf8.GetBytes("somesalt");
p.SetByteArray(Argon2Kdf.ParamSalt, pbSalt);
pbExpc = new byte[32] {
0x29, 0xCB, 0xD3, 0xA1, 0x93, 0x76, 0xF7, 0xA2,
0xFC, 0xDF, 0xB0, 0x68, 0xAC, 0x0B, 0x99, 0xBA,
0x40, 0xAC, 0x09, 0x01, 0x73, 0x42, 0xCE, 0xF1,
0x29, 0xCC, 0xA1, 0x4F, 0xE1, 0xC1, 0xB7, 0xA3
};
pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-4");
}
p.SetUInt64(Argon2Kdf.ParamMemory, (1 << 10) * 1024); // 1 MB
p.SetUInt64(Argon2Kdf.ParamIterations, 3);
pbExpc = new byte[32] {
0x7A, 0xBE, 0x1C, 0x1C, 0x8D, 0x7F, 0xD6, 0xDC,
0x7C, 0x94, 0x06, 0x3E, 0xD8, 0xBC, 0xD8, 0x1C,
0x2F, 0x87, 0x84, 0x99, 0x12, 0x83, 0xFE, 0x76,
0x00, 0x64, 0xC4, 0x58, 0xA4, 0xDA, 0x35, 0x70
};
pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-5");
}
#if SELFTEST_ARGON2_LONGER
p.SetUInt64(Argon2Kdf.ParamMemory, (1 << 20) * 1024); // 1 GB
p.SetUInt64(Argon2Kdf.ParamIterations, 2);
p.SetUInt32(Argon2Kdf.ParamParallelism, 3);
pbExpc = new byte[32] {
0xE6, 0xE7, 0xCB, 0xF5, 0x5A, 0x06, 0x93, 0x05,
0x32, 0xBA, 0x86, 0xC6, 0x1F, 0x45, 0x17, 0x99,
0x65, 0x41, 0x77, 0xF9, 0x30, 0x55, 0x9A, 0xE8,
0x3D, 0x21, 0x48, 0xC6, 0x2D, 0x0C, 0x49, 0x11
};
pb = kdf.Transform(pbMsg, p);
if (!MemUtil.ArraysEqual(pb, pbExpc))
{
throw new SecurityException("Argon2-6");
}
#endif // SELFTEST_ARGON2_LONGER
#endif // SELFTEST_ARGON2_LONG
#endif // DEBUG
}
