public override int Start()
{
int tests = 0;
DataProtectionCryptoServiceProvider dp = new DataProtectionCryptoServiceProvider();
tests += TestDP(dp, Encoding.ASCII.GetBytes(""));
tests += TestDP(dp, Encoding.ASCII.GetBytes("a"));
tests += TestDP(dp, Encoding.ASCII.GetBytes("Hello World!"));
tests += TestDP(dp, Encoding.ASCII.GetBytes("DataProtectionCryptoServiceProvider"));
tests += TestDP(dp, new byte[200]);
return(tests);
}
protected int TestDP(DataProtectionCryptoServiceProvider dp, byte[] data)
{
byte[] entropy = new byte[m_Random.Next(5, 123)];
m_Random.NextBytes(entropy);
byte[] enc, dec;
// test without entropy
try {
enc = dp.ProtectData(ProtectionType.CurrentUser, data);
dec = dp.UnprotectData(enc);
if (!ArrayEquals(dec, data))
{
AddError("DP-T01");
}
} catch {
AddError("DP-T02");
}
try {
enc = dp.ProtectData(ProtectionType.LocalMachine, data);
dec = dp.UnprotectData(enc);
if (!ArrayEquals(dec, data))
{
AddError("DP-T03");
}
} catch {
AddError("DP-T04");
}
// test with entropy
dp.Entropy = entropy;
try {
enc = dp.ProtectData(ProtectionType.CurrentUser, data);
dec = dp.UnprotectData(enc);
if (!ArrayEquals(dec, data))
{
AddError("DP-T05");
}
} catch {
AddError("DP-T06");
}
try {
enc = dp.ProtectData(ProtectionType.LocalMachine, data);
dec = dp.UnprotectData(enc);
if (!ArrayEquals(dec, data))
{
AddError("DP-T07");
}
} catch {
AddError("DP-T08");
}
// test MAC
try {
enc = dp.ProtectData(ProtectionType.LocalMachine, data);
enc[enc.Length / 2] ^= 0xFF; // corrupt a byte
dec = dp.UnprotectData(enc);
AddError("DP-T09");
} catch (CryptographicException) {
} catch {
AddError("DP-T10");
}
dp.Entropy = null;
return(10);
}