public void CMAC_AES_192()
{
byte[] aes192_key = new byte[] { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };
byte[] expected, actual;
using (CMAC cmac = new CMAC(new RijndaelManaged())) {
cmac.Key = aes192_key;
actual = cmac.ComputeHash(new byte[0], 0, 0);
expected = new byte[] { 0xd1, 0x7d, 0xdf, 0x46, 0xad, 0xaa, 0xcd, 0xe5, 0x31, 0xca, 0xc4, 0x83, 0xde, 0x7a, 0x93, 0x67 };
Assert.AreEqual(expected, actual, "#1");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a }, 0, 16);
expected = new byte[] { 0x9e, 0x99, 0xa7, 0xbf, 0x31, 0xe7, 0x10, 0x90, 0x06, 0x62, 0xf6, 0x5e, 0x61, 0x7c, 0x51, 0x84 };
Assert.AreEqual(expected, actual, "#2");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11 }, 0, 40);
expected = new byte[] { 0x8a, 0x1d, 0xe5, 0xbe, 0x2e, 0xb3, 0x1a, 0xad, 0x08, 0x9a, 0x82, 0xe6, 0xee, 0x90, 0x8b, 0x0e };
Assert.AreEqual(expected, actual, "#3");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 }, 0, 64);
expected = new byte[] { 0xa1, 0xd5, 0xdf, 0x0e, 0xed, 0x79, 0x0f, 0x79, 0x4d, 0x77, 0x58, 0x96, 0x59, 0xf3, 0x9a, 0x11 };
Assert.AreEqual(expected, actual, "#4");
}
}
public void CMAC_AES_256()
{
byte[] aes256_key = new byte[] { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };
byte[] expected, actual;
using (CMAC cmac = new CMAC(new RijndaelManaged())) {
cmac.Key = aes256_key;
actual = cmac.ComputeHash(new byte[0], 0, 0);
expected = new byte[] { 0x02, 0x89, 0x62, 0xf6, 0x1b, 0x7b, 0xf8, 0x9e, 0xfc, 0x6b, 0x55, 0x1f, 0x46, 0x67, 0xd9, 0x83 };
Assert.AreEqual(expected, actual, "#1");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a }, 0, 16);
expected = new byte[] { 0x28, 0xa7, 0x02, 0x3f, 0x45, 0x2e, 0x8f, 0x82, 0xbd, 0x4b, 0xf2, 0x8d, 0x8c, 0x37, 0xc3, 0x5c };
Assert.AreEqual(expected, actual, "#2");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11 }, 0, 40);
expected = new byte[] { 0xaa, 0xf3, 0xd8, 0xf1, 0xde, 0x56, 0x40, 0xc2, 0x32, 0xf5, 0xb1, 0x69, 0xb9, 0xc9, 0x11, 0xe6 };
Assert.AreEqual(expected, actual, "#3");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 }, 0, 64);
expected = new byte[] { 0xe1, 0x99, 0x21, 0x90, 0x54, 0x9f, 0x6e, 0xd5, 0x69, 0x6a, 0x2c, 0x05, 0x6c, 0x31, 0x54, 0x10 };
Assert.AreEqual(expected, actual, "#4");
}
}
public void CMAC_AES_128()
{
byte[] aes128_key = new byte[] { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
byte[] expected, actual;
using (CMAC cmac = new CMAC(new RijndaelManaged())) {
cmac.Key = aes128_key;
actual = cmac.ComputeHash(new byte[0], 0, 0);
expected = new byte[] { 0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28, 0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46 };
Assert.AreEqual(expected, actual, "#1");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a }, 0, 16);
expected = new byte[] { 0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44, 0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c };
Assert.AreEqual(expected, actual, "#2");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11 }, 0, 40);
expected = new byte[] { 0xdf, 0xa6, 0x67, 0x47, 0xde, 0x9a, 0xe6, 0x30, 0x30, 0xca, 0x32, 0x61, 0x14, 0x97, 0xc8, 0x27 };
Assert.AreEqual(expected, actual, "#3");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 }, 0, 64);
expected = new byte[] { 0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92, 0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe };
Assert.AreEqual(expected, actual, "#4");
}
}
public void CMAC_2KEY_TDEA()
{
byte[] tdea_key = new byte[] { 0x4c, 0xf1, 0x51, 0x34, 0xa2, 0x85, 0x0d, 0xd5, 0x8a, 0x3d, 0x10, 0xba, 0x80, 0x57, 0x0d, 0x38, 0x4c, 0xf1, 0x51, 0x34, 0xa2, 0x85, 0x0d, 0xd5 };
byte[] expected, actual;
using (CMAC cmac = new CMAC(new TripleDESCryptoServiceProvider())) {
cmac.Key = tdea_key;
actual = cmac.ComputeHash(new byte[0], 0, 0);
expected = new byte[] { 0xbd, 0x2e, 0xbf, 0x9a, 0x3b, 0xa0, 0x03, 0x61 };
Assert.AreEqual(expected, actual, "#1");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96 }, 0, 8);
expected = new byte[] { 0x4f, 0xf2, 0xab, 0x81, 0x3c, 0x53, 0xce, 0x83 };
Assert.AreEqual(expected, actual, "#2");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57 }, 0, 20);
expected = new byte[] { 0x62, 0xdd, 0x1b, 0x47, 0x19, 0x02, 0xbd, 0x4e };
Assert.AreEqual(expected, actual, "#3");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51 }, 0, 32);
expected = new byte[] { 0x31, 0xb1, 0xe4, 0x31, 0xda, 0xbc, 0x4e, 0xb8 };
Assert.AreEqual(expected, actual, "#4");
}
}
public void CMAC_3KEY_TDEA()
{
byte[] tdea_key = new byte[] { 0x8a, 0xa8, 0x3b, 0xf8, 0xcb, 0xda, 0x10, 0x62, 0x0b, 0xc1, 0xbf, 0x19, 0xfb, 0xb6, 0xcd, 0x58, 0xbc, 0x31, 0x3d, 0x4a, 0x37, 0x1c, 0xa8, 0xb5 };
byte[] expected, actual;
using (CMAC cmac = new CMAC(new TripleDESCryptoServiceProvider())) {
cmac.Key = tdea_key;
actual = cmac.ComputeHash(new byte[0], 0, 0);
expected = new byte[] { 0xb7, 0xa6, 0x88, 0xe1, 0x22, 0xff, 0xaf, 0x95 };
Assert.AreEqual(expected, actual, "#1");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96 }, 0, 8);
expected = new byte[] { 0x8e, 0x8f, 0x29, 0x31, 0x36, 0x28, 0x37, 0x97 };
Assert.AreEqual(expected, actual, "#2");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57 }, 0, 20);
expected = new byte[] { 0x74, 0x3d, 0xdb, 0xe0, 0xce, 0x2d, 0xc2, 0xed };
Assert.AreEqual(expected, actual, "#3");
actual = cmac.ComputeHash(new byte[] { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c,
0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51 }, 0, 32);
expected = new byte[] { 0x33, 0xe6, 0xb1, 0x09, 0x24, 0x00, 0xea, 0xe5 };
Assert.AreEqual(expected, actual, "#4");
}
}
public AesEax(ReadOnlySpan <byte> key)
{
this.aes = Aes.Create();
this.aes.Key = key.ToArray();
this.aes.Mode = CipherMode.ECB;
this.aes.Padding = PaddingMode.None;
this.cmac = new CMAC(Aes.Create(), key.ToArray());
}
public void HashAes()
{
using var cmac = new CMAC(Aes.Create(), Convert.FromHexString("2b7e151628aed2a6abf7158809cf4f3c"));
cmac.TransformBlock(Convert.FromHexString("6bc1bee22e409f96e93d7e117393172a"), 0, 16, null, 0);
cmac.TransformBlock(Convert.FromHexString("ae2d8a571e03ac9c9eb76fac45af8e51"), 0, 16, null, 0);
cmac.TransformFinalBlock(Convert.FromHexString("30c81c46a35ce411"), 0, 8);
var tag = cmac.Hash;
Assert.AreEqual("dfa66747de9ae63030ca32611497c827", Convert.ToHexString(tag).ToLowerInvariant());
}
private void MacTest(byte[] Key, byte[] Input, byte[] Expected)
{
byte[] hash = new byte[16];
using (CMAC mac = new CMAC(new RHX()))
{
mac.Initialize(Key, null);
mac.BlockUpdate(Input, 0, Input.Length);
mac.DoFinal(hash, 0);
}
if (!Evaluate.AreEqual(Expected, hash))
{
throw new Exception("CMAC is not equal! Expected: " + HexConverter.ToString(Expected) + " Received: " + HexConverter.ToString(hash));
}
}
private void CmacDescriptionTest()
{
CSPPrng rng = new CSPPrng();
byte[] data = rng.GetBytes(rng.Next(100, 400));
byte[] key = rng.GetBytes(32);
byte[] iv = rng.GetBytes(16);
CMAC mac = new CMAC(BlockCiphers.Rijndael);
mac.Initialize(key, iv);
byte[] c1 = mac.ComputeMac(data);
MacDescription mds = new MacDescription(32, BlockCiphers.Rijndael, IVSizes.V128, BlockSizes.B128, RoundCounts.R14);
MacStream mst = new MacStream(mds, new KeyParams(key, iv));
mst.Initialize(new MemoryStream(data));
byte[] c2 = mst.ComputeMac();
if (!Evaluate.AreEqual(c1, c2))
{
throw new Exception("MacStreamTest: CMAC code arrays are not equal!");
}
}
private static bool TryGetNanoAlgorithm(ICMAC referent, int macSize, out ICMAC algorithm)
{
if (macSize == -1)
{
algorithm = referent;
return(true);
}
else if (macSize == referent.BlockSize)
{
algorithm = referent;
return(true);
}
else if (macSize >= 8 && macSize <= referent.BlockSize && macSize % 8 == 0)
{
algorithm = new CMAC(((CMAC)referent).BlockAlgorithm, macSize);
return(true);
}
else
{
algorithm = null;
return(false);
}
}
