public void macNoContent()
{
MAC0Message msg = new MAC0Message();
msg.AddAttribute(HeaderKeys.Algorithm, AlgorithmValues.HMAC_SHA_256, Attributes.PROTECTED);
CoseException e = Assert.ThrowsException <CoseException>(() =>
msg.Compute(rgbKey256));
Assert.AreEqual(e.Message, ("No Content Specified"));
}
public void macNoAlgorithm()
{
MAC0Message msg = new MAC0Message();
msg.SetContent(rgbContent);
CoseException e = Assert.ThrowsException <CoseException>(() =>
msg.Compute(rgbKey256));
Assert.AreEqual(e.Message, ("No Algorithm Specified"));
}
public void macUnsupportedAlgorithm()
{
MAC0Message msg = new MAC0Message();
msg.AddAttribute(HeaderKeys.Algorithm, AlgorithmValues.AES_CCM_16_64_256, Attributes.PROTECTED);
msg.SetContent(rgbContent);
CoseException e = Assert.ThrowsException <CoseException>(() =>
msg.Compute(rgbKey256));
Assert.AreEqual(e.Message, ("MAC algorithm not recognized 11"));
}
public void macUnknownAlgorithm()
{
MAC0Message msg = new MAC0Message();
msg.AddAttribute(HeaderKeys.Algorithm, CBORObject.FromObject("Unknown"), Attributes.PROTECTED);
msg.SetContent(rgbContent);
CoseException e = Assert.ThrowsException <CoseException>(() =>
msg.Compute(rgbKey256));
Assert.AreEqual(e.Message, ("Unknown Algorithm Specified"));
}
public void testRoundTrip()
{
MAC0Message msg = new MAC0Message();
msg.AddAttribute(HeaderKeys.Algorithm, AlgorithmValues.HMAC_SHA_256, Attributes.PROTECTED);
msg.SetContent(rgbContent);
msg.Compute(rgbKey256);
byte[] rgbMsg = msg.EncodeToBytes();
msg = (MAC0Message)Message.DecodeFromBytes(rgbMsg, Tags.MAC0);
Boolean contentNew = msg.Validate(rgbKey256);
Assert.AreEqual(contentNew, (true));
}
public void testAddAttribute_3()
{
byte[] rgbKey = new byte[256 / 8];
MAC0Message msg = new MAC0Message();
msg.SetContent("ABCDE");
msg.AddAttribute(HeaderKeys.Algorithm, AlgorithmValues.HMAC_SHA_256, Attributes.PROTECTED);
msg.Compute(rgbKey);
try {
msg.AddAttribute(HeaderKeys.Algorithm, AlgorithmValues.AES_GCM_128, Attributes.PROTECTED);
}
catch (CoseException e) {
Assert.AreEqual(e.Message, "Operation would modify integrity protected attributes");
}
}