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wolfssl/wrapper/CSharp/wolfCrypt-FIPS-Test/MacHashTests.cs
2026-10-02 09:32:25 -06:00

107 lines
4.1 KiB
C#

/* MacHashTests.cs
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfSSL 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
using System;
using System.Linq;
using System.Text;
namespace wolfSSL.CSharp.Fips.Test
{
internal static class MacHashTests
{
private static readonly FipsHashType[] Hashes = {
FipsHashType.Sha1, FipsHashType.Sha224, FipsHashType.Sha256, FipsHashType.Sha384,
FipsHashType.Sha512, FipsHashType.Sha3_224, FipsHashType.Sha3_256, FipsHashType.Sha3_384,
FipsHashType.Sha3_512
};
public static void Run()
{
T.Section("SHA-1 / SHA-2 / SHA-3");
T.Run("incremental update equals one-shot, object reusable after Final", () =>
{
byte[] msg = Encoding.ASCII.GetBytes("The quick brown fox jumps over the lazy dog");
foreach (FipsHashType type in Hashes)
{
using var h = new FipsHash(type);
h.Update(msg.Take(10).ToArray());
h.Update(msg.Skip(10).ToArray());
byte[] a = h.Final();
T.Bytes(FipsHash.Compute(type, msg), a, type + " incremental");
h.Update(msg);
T.Bytes(a, h.Final(), type + " reuse");
}
});
T.Section("HMAC");
T.Run("HMAC key below 112 bits is rejected (HMAC_MIN_KEYLEN_E)", () =>
{
T.Throws(FipsError.HMAC_MIN_KEYLEN_E,
() => FipsHmac.Compute(FipsHashType.Sha256, new byte[13], new byte[] { 1 }),
"13-byte key");
});
T.Run("HMAC object reusable after Final", () =>
{
byte[] key = new byte[32];
using var h = new FipsHmac(FipsHashType.Sha256, key);
h.Update(new byte[] { 1, 2, 3 });
byte[] a = h.Final();
h.Update(new byte[] { 1, 2, 3 });
T.Bytes(a, h.Final(), "second MAC");
});
T.Section("CMAC-AES");
T.Run("CMAC tags below 64 bits are refused", () =>
{
bool threw = false;
try { FipsCmac.Compute(new byte[16], new byte[1], 4); } catch (ArgumentOutOfRangeException) { threw = true; }
T.True(threw, "4-byte tag generated");
});
T.Run("HMAC keys at most 1024 bits; AES-CMAC key sizes", () =>
{
byte[] msg = { 1, 2, 3 };
T.Equal(32, FipsHmac.Compute(FipsHashType.Sha256, new byte[128], msg).Length, "128-byte key");
bool threw = false;
try { FipsHmac.Compute(FipsHashType.Sha256, new byte[129], msg); } catch (ArgumentException) { threw = true; }
T.True(threw, "129-byte key accepted");
threw = false;
try { new FipsCmac(new byte[20]).Dispose(); } catch (ArgumentException) { threw = true; }
T.True(threw, "20-byte CMAC key accepted");
});
T.Run("CMAC is single use", () =>
{
using var c = new FipsCmac(new byte[16]);
c.Final();
bool threw = false;
try { c.Update(new byte[1]); } catch (InvalidOperationException) { threw = true; }
T.True(threw, "update after final allowed");
});
}
}
}