public void TestSign()
{
Assert.That(QQnCryptoHelpers.CalculateFileHash(SnkFile, HashType.None), Is.EqualTo("dcd59a19afe007b2a7e706d100f8fcdeb4e4e1e9,type=SHA1,size=596"), "SHA256++Hash matches");
Assert.That(QQnCryptoHelpers.CalculateFileHash(SnkFile, HashType.SHA256), Is.EqualTo("31a02f23fb06dc6326428843782c049d14e90fb14f74704909e6e6ba1a2592c0"), "SHA256 hash matches");
Assert.That(QQnCryptoHelpers.CalculateFileHash(SnkFile, HashType.SHA1), Is.EqualTo("dcd59a19afe007b2a7e706d100f8fcdeb4e4e1e9"), "SHA1 hash matches");
Assert.That(QQnCryptoHelpers.CalculateFileHash(SnkFile, HashType.MD5), Is.EqualTo("2b19ab067c03e05d55f62702c4a79864"), "MD5 hash matches");
SignAndVerify(HashType.MD5);
SignAndVerify(HashType.SHA1);
SignAndVerify(HashType.SHA256);
SignAndVerify(HashType.SHA512);
SignAndVerify(HashType.SHA384);
// RipeMD160 requires type, or it is validated against SHA1
SignAndVerify(HashType.RipeMD160 | HashType.PlusType);
string hash = QQnCryptoHelpers.CalculateFileHash(SnkFile, HashType.RipeMD160);
Assert.That(QQnCryptoHelpers.VerifyFileHash(SnkFile, hash), Is.False); // SHA1 hash != RIPEMD160 hash
SignAndVerify(HashType.SHA1 | HashType.PlusSize);
SignAndVerify(HashType.SHA1 | HashType.PlusType);
SignAndVerify(HashType.SHA1 | HashType.PlusSize | HashType.PlusType);
}
/// <summary>
/// Verifies the file.
/// </summary>
/// <param name="baseDirectory">The base directory.</param>
/// <param name="verifyData">The verify data.</param>
/// <param name="verificationMode">The verification mode.</param>
/// <returns></returns>
public static bool VerifyFile(string baseDirectory, IVerifiableFile verifyData, VerifyMode verificationMode)
{
if (string.IsNullOrEmpty(baseDirectory))
{
throw new ArgumentNullException("baseDirectory");
}
else if (verifyData == null)
{
throw new ArgumentNullException("verifyData");
}
string path = QQnPath.Combine(baseDirectory, verifyData.Filename);
FileInfo fif = new FileInfo(path);
if (!fif.Exists)
{
return(false);
}
if (verificationMode < VerifyMode.Time)
{
return(true);
}
bool hasTime = verifyData.LastWriteTimeUtc.HasValue;
bool timeFailed = hasTime && fif.LastWriteTimeUtc != verifyData.LastWriteTimeUtc.Value;
if (timeFailed && verificationMode == VerifyMode.Time)
{
return(false);
}
if (verificationMode < VerifyMode.TimeSize)
{
return(true);
}
bool hasSize = (verifyData.FileSize >= 0);
bool sizeFailed = hasSize && fif.Length != verifyData.FileSize;
if ((timeFailed || sizeFailed) && verificationMode == VerifyMode.TimeSize)
{
return(false);
}
if (verificationMode < VerifyMode.FileHash)
{
return(true);
}
if (!string.IsNullOrEmpty(verifyData.FileHash) && !QQnCryptoHelpers.VerifyFileHash(fif.FullName, verifyData.FileHash))
{
return(false);
}
return(true);
}
void SignAndVerify(HashType hashType)
{
string hash = QQnCryptoHelpers.CalculateFileHash(SnkFile, hashType);
Assert.That(QQnCryptoHelpers.VerifyFileHash(SnkFile, hash), Is.True, "Hash of type {0} ok", hashType);
}
