private static byte[] ComputeHash(byte[] messageBinary, byte[] privateKeyBinary)
{
byte[] result;
using (HMACSHA256Cng hmacsha256Cng = new HMACSHA256Cng(privateKeyBinary))
{
byte[] array = hmacsha256Cng.ComputeHash(messageBinary);
hmacsha256Cng.Clear();
result = array;
}
return(result);
}
public void HMACSH256CngPropertyTest()
{
using (HMACSHA256 bclHmac = new HMACSHA256())
using (HMACSHA256Cng cngHmac = new HMACSHA256Cng())
{
Assert.AreEqual(typeof(SHA256Cng).AssemblyQualifiedName, cngHmac.HashName);
Assert.AreEqual(bclHmac.HashSize, cngHmac.HashSize);
Assert.AreEqual(bclHmac.InputBlockSize, cngHmac.InputBlockSize);
Assert.AreEqual(bclHmac.OutputBlockSize, cngHmac.OutputBlockSize);
Assert.AreEqual(CngProvider2.MicrosoftPrimitiveAlgorithmProvider, cngHmac.Provider);
}
}
private SharepointAccessManager.Key GetKey(SecurityIdentifier userSid, Guid mailboxGuid)
{
SharepointAccessManager.Key result;
using (HMACSHA256Cng hmacsha256Cng = new HMACSHA256Cng(this.hmacKey))
{
byte[] array = new byte[userSid.BinaryLength + 16];
userSid.GetBinaryForm(array, 0);
Buffer.BlockCopy(mailboxGuid.ToByteArray(), 0, array, userSid.BinaryLength, 16);
byte[] src = hmacsha256Cng.ComputeHash(array);
byte[] array2 = new byte[16];
Buffer.BlockCopy(src, 0, array2, 0, 16);
result = new SharepointAccessManager.Key(array2);
}
return(result);
}
public void HMACSHA256CngTest()
{
using (RNGCng rng = new RNGCng())
{
byte[] key = new byte[64];
rng.GetBytes(key);
using (HMACSHA256 bclHmac = new HMACSHA256(key))
using (HMACSHA256Cng cngHmac = new HMACSHA256Cng(key))
{
for (int i = 0; i < 10; ++i)
{
byte[] data = new byte[2048];
rng.GetBytes(data);
byte[] bcl = bclHmac.ComputeHash(data);
byte[] cng = cngHmac.ComputeHash(data);
Assert.IsTrue(Util.CompareBytes(bcl, cng));
}
}
}
}
