private unsafe IntPtr DigestHmac(int digestLength, ProtectedMemory key, byte[] message)
{
Blake2bHashState blake2 = default;
blake2.Init(digestLength, key);
int length = message.Length;
fixed(byte *input = message)
{
blake2.Update(input, length);
}
IntPtr hash = blake2.Finish();
blake2.Free();
return(hash);
}
private unsafe IntPtr Digest(int digestLength, ProtectedMemory protectedMemory)
{
Blake2bHashState blake2 = default;
blake2.Init(digestLength, null);
int length = protectedMemory.ContentLength;
IntPtr hInput = Marshal.AllocHGlobal(length);
using (ProtectedMemoryAccess access = new ProtectedMemoryAccess(protectedMemory))
{
MarshalExtensions.Copy(access.Handle, 0, hInput, 0, length);
}
byte *input = (byte *)hInput;
blake2.Update(input, length);
MarshalExtensions.ZeroMemory(hInput, length);
Marshal.FreeHGlobal(hInput);
IntPtr hash = blake2.Finish();
blake2.Free();
return(hash);
}