CMAC.cs

// ZWaveDotNet Copyright (C) 2025
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY, without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using NUnit.Framework;
using ZWaveDotNet.Security;
using ZWaveDotNet.Util;

namespace UnitTests
{
    public class CMAC
    {

        [Test]
        public void Test1()
        {
            Memory<byte> key = MemoryUtil.From("2B7E151628AED2A6ABF7158809CF4F3C");
            Memory<byte> plaintext = Array.Empty<byte>();
            Memory<byte> expected = MemoryUtil.From("BB1D6929E95937287FA37D129B756746");
            var result = AES.ComputeCMAC(key.ToArray(), plaintext);
            Assert.That(expected.ToArray(), Is.EqualTo(result).AsCollection);
        }

        [Test]
        public void Test2()
        {
            Memory<byte> key = MemoryUtil.From("2B7E151628AED2A6ABF7158809CF4F3C");
            Memory<byte> plaintext = MemoryUtil.From("6BC1BEE22E409F96E93D7E117393172A");
            Memory<byte> expected = MemoryUtil.From("070A16B46B4D4144F79BDD9DD04A287C");
            var result = AES.ComputeCMAC(key.ToArray(), plaintext);
            Assert.That(expected.ToArray(), Is.EqualTo(result).AsCollection);
        }

        [Test]
        public void Test3()
        {
            Memory<byte> key = MemoryUtil.From("2B7E151628AED2A6ABF7158809CF4F3C");
            Memory<byte> plaintext = MemoryUtil.From("6BC1BEE22E409F96E93D7E117393172AAE2D8A57");
            Memory<byte> expected = MemoryUtil.From("7D85449EA6EA19C823A7BF78837DFADE");
            var result = AES.ComputeCMAC(key.ToArray(), plaintext);
            Assert.That(expected.ToArray(), Is.EqualTo(result).AsCollection);
        }

        [Test]
        public void Test4()
        {
            Memory<byte> key = MemoryUtil.From("2B7E151628AED2A6ABF7158809CF4F3C");
            Memory<byte> plaintext = MemoryUtil.From("6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411");
            Memory<byte> expected = MemoryUtil.From("dfa66747de9ae63030ca32611497c827");
            var result = AES.ComputeCMAC(key.ToArray(), plaintext);
            Assert.That(expected.ToArray(), Is.EqualTo(result).AsCollection);
        }

        [Test]
        public void Test5()
        {
            Memory<byte> key = MemoryUtil.From("2B7E151628AED2A6ABF7158809CF4F3C");
            Memory<byte> plaintext = MemoryUtil.From("6BC1BEE22E409F96E93D7E117393172AAE2D8A571E03AC9C9EB76FAC45AF8E5130C81C46A35CE411E5FBC1191A0A52EFF69F2445DF4F9B17AD2B417BE66C3710");
            Memory<byte> expected = MemoryUtil.From("51F0BEBF7E3B9D92FC49741779363CFE");
            var result = AES.ComputeCMAC(key.ToArray(), plaintext);
            Assert.That(expected.ToArray(), Is.EqualTo(result).AsCollection);
        }
    }
}