public void PassRSAParameter_ExportParameterWithoutPrivateKey_DecryptionWithPublicKeyFails()
{
string plainString = "Encrypt me via RSA";
string plainkey = "";
string encryptedString;
string decryptedString;
using (var cipher = new RSACipher<RSACryptoServiceProvider>())
{
encryptedString = cipher.EncryptToString(plainString);
plainkey = cipher.ToXmlString(false);
}
using (var cipher = new RSACipher<RSACryptoServiceProvider>(plainkey))
{
decryptedString = cipher.DecryptToString(encryptedString);
}
Assert.AreEqual(plainString, decryptedString);
}
public void ComputeAndSignHash_VerifiesComputedSignature_Pass()
{
Random rdm = new Random();
byte[] message = new byte[256];
byte[] signedMessage;
string nativeXmlString;
bool isMessageNotTamperedWith = true;
rdm.NextBytes(message);
using (var rsacsp = new RSACipher<RSACryptoServiceProvider>())
{
signedMessage = rsacsp.ComputeAndSignHash<SHA384Cng>(message);
nativeXmlString = rsacsp.ToXmlString(true);
}
using (var cipher = new RSACipher<RSACryptoServiceProvider>(nativeXmlString))
{
isMessageNotTamperedWith = cipher.ComputeAndVerifyHash<SHA384Cng>(message, signedMessage);
}
Assert.IsTrue(isMessageNotTamperedWith);
}
public void SignHash_VerifiesComputedSignature_Pass()
{
Random rdm = new Random();
byte[] message = new byte[256];
byte[] signedMessage;
string nativeXmlString;
bool isMessageNotTamperedWith = true;
rdm.NextBytes(message);
using (var rsacsp = new RSACipher<RSACryptoServiceProvider>())
{
byte[] firstHash = new SHA256Managed().ComputeHash(message);
signedMessage = rsacsp.SignHash(firstHash);
nativeXmlString = rsacsp.ToXmlString(true);
}
using (var cipher = new RSACipher<RSACryptoServiceProvider>(nativeXmlString))
{
byte[] n = new SHA256Managed().ComputeHash(message);
isMessageNotTamperedWith = cipher.VerifyHash(n, signedMessage);
}
Assert.IsTrue(isMessageNotTamperedWith);
}
public void RSAParameterEncryption_ExportEncryptedParameterWithPrivateKey_Pass()
{
string plainKey = "soonAssigned";
byte[] salt = {
1,2,3,4,5,6,7,8,9
};
string passwd = "SafeP4ssw0rd;,,:;DWAe";
string encryptedKey = "";
string decryptedKey = "laterAssigned";
byte[] IV;
using (var cipher = new RSACipher<RSACryptoServiceProvider>())
{
plainKey = cipher.ToXmlString(true);
encryptedKey = cipher.ToEncryptedXmlString<AesManaged>(true, passwd, salt, out IV);
cipher.FromEncryptedXmlString<AesManaged>(encryptedKey, passwd, salt, IV);
decryptedKey = cipher.ToXmlString(true);
}
Assert.AreEqual(plainKey, decryptedKey);
}
