public void Verify2048WithSha1()
{
byte[] data = { 1, 2, 3, 4 };
byte[] signature = (
"28DC05B452C8FC0E0BFE9DA067D11147D31B1F3C63E5CF95046A812417C64844868D04D3A1D23" +
"13E5DD07DE757B3A836E70A1C85DDC90CB62DE2E44746C760F2").HexToByteArray();
using (DSA dsa = DSAFactory.Create())
{
dsa.ImportParameters(DSATestData.GetDSA2048Params());
Assert.True(VerifyData(dsa, data, signature, HashAlgorithmName.SHA1), "Untampered data verifies");
data[0] ^= 0xFF;
Assert.False(VerifyData(dsa, data, signature, HashAlgorithmName.SHA1), "Tampered data verifies");
data[0] ^= 0xFF;
signature[signature.Length - 1] ^= 0xFF;
Assert.False(VerifyData(dsa, data, signature, HashAlgorithmName.SHA1), "Tampered signature verifies");
}
}
public void VerifyKnown_2048_SHA512()
{
byte[] signature =
{
0x6F, 0x44, 0x68, 0x1F, 0x74, 0xF7, 0x90, 0x2F,
0x38, 0x43, 0x9B, 0x00, 0x15, 0xDA, 0xF6, 0x8F,
0x97, 0xB4, 0x4A, 0x52, 0xF7, 0xC1, 0xEC, 0x21,
0xE2, 0x44, 0x48, 0x71, 0x0F, 0xEC, 0x5E, 0xB3,
0xA1, 0xCB, 0xE4, 0x42, 0xC8, 0x1E, 0xCD, 0x3C,
0xA8, 0x15, 0x51, 0xDE, 0x0C, 0xCC, 0xAE, 0x4D,
0xEB, 0x2A, 0xE9, 0x13, 0xBB, 0x7F, 0x3C, 0xFB,
0x69, 0x8A, 0x8E, 0x0F, 0x80, 0x87, 0x2E, 0xA6,
};
using (DSA dsa = DSAFactory.Create())
{
dsa.ImportParameters(DSATestData.GetDSA2048Params());
Assert.True(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA512));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA256));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA384));
}
}
public void VerifyKnown_2048_SHA384()
{
byte[] signature =
{
0x56, 0xBA, 0x70, 0x48, 0x18, 0xBA, 0xE3, 0x43,
0xF0, 0x7F, 0x25, 0xFE, 0xEA, 0xF1, 0xDB, 0x49,
0x37, 0x15, 0xD3, 0xD0, 0x5B, 0x9D, 0x57, 0x19,
0x73, 0x44, 0xDA, 0x70, 0x8D, 0x44, 0x7D, 0xBA,
0x83, 0xDB, 0x8E, 0x8F, 0x39, 0x0F, 0x83, 0xD5,
0x0B, 0x73, 0x81, 0x77, 0x3D, 0x9B, 0x8D, 0xA4,
0xAD, 0x94, 0x3C, 0xAB, 0x7A, 0x6C, 0x81, 0x48,
0x2F, 0xCF, 0x50, 0xE3, 0x34, 0x0B, 0xEC, 0xF0,
};
using (DSA dsa = DSAFactory.Create())
{
dsa.ImportParameters(DSATestData.GetDSA2048Params());
Assert.True(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA384));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA256));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA512));
}
}
public void VerifyKnown_2048_SHA256()
{
byte[] signature =
{
0x92, 0x06, 0x0B, 0x57, 0xF1, 0x35, 0x20, 0x28,
0xC6, 0x54, 0x4A, 0x0F, 0x08, 0x48, 0x5F, 0x5D,
0x55, 0xA8, 0x42, 0xFB, 0x05, 0xA7, 0x3E, 0x32,
0xCA, 0xC6, 0x91, 0x77, 0x70, 0x0A, 0x68, 0x44,
0x60, 0x63, 0xF7, 0xE7, 0x96, 0x54, 0x8F, 0x4A,
0x6D, 0x47, 0x10, 0xEE, 0x9A, 0x9F, 0xC2, 0xC8,
0xDD, 0x74, 0xAE, 0x1A, 0x68, 0xF3, 0xA9, 0xB8,
0x62, 0x14, 0x50, 0xA3, 0x01, 0x1D, 0x2A, 0x22,
};
using (DSA dsa = DSAFactory.Create())
{
dsa.ImportParameters(DSATestData.GetDSA2048Params());
Assert.True(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA256));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA384));
Assert.False(VerifyData(dsa, DSATestData.HelloBytes, signature, HashAlgorithmName.SHA512));
}
}
private void UseAfterDispose(bool importKey)
{
DSA key = importKey ? DSAFactory.Create(DSATestData.GetDSA1024Params()) : DSAFactory.Create(512);
byte[] data = { 1 };
byte[] sig;
// Ensure the key is populated, then dispose it.
using (key)
{
sig = SignData(key, data, HashAlgorithmName.SHA1);
}
key.Dispose();
UseAfterDispose(key, data, sig);
Assert.Throws <ObjectDisposedException>(() => key.ImportParameters(DSATestData.GetDSA1024Params()));
// Either set_KeySize or SignData should throw.
Assert.Throws <ObjectDisposedException>(
() =>
{
key.KeySize = 576;
SignData(key, data, HashAlgorithmName.SHA1);
});
}
private void UseAfterDispose(bool importKey)
{
DSA key = importKey ? DSAFactory.Create(DSATestData.GetDSA1024Params()) : DSAFactory.Create(1024);
byte[] data = { 1 };
byte[] sig;
// Ensure the key is populated, then dispose it.
using (key)
{
sig = SignData(key, data, HashAlgorithmName.SHA1);
}
key.Dispose();
UseAfterDispose(key, data, sig);
Assert.Throws <ObjectDisposedException>(() => key.ImportParameters(DSATestData.GetDSA1024Params()));
// Either set_KeySize or SignData should throw.
Assert.Throws <ObjectDisposedException>(
() =>
{
try
{
key.KeySize = 576;
}
catch (CryptographicException)
{
// DSACryptoServiceProvider on Android only supports 1024 and does an early check for legal
// key sizes, since it is more restrictive than the wrapped implementation. It will throw
// CryptographicException. SignData should still throw ObjectDisposedException.
if (!PlatformDetection.IsAndroid)
{
throw;
}
}
SignData(key, data, HashAlgorithmName.SHA1);
});
}
