public void TestFullrun()
{
const string messageToEncrypt = "Important important!";
byte[] dataToEncrypt = Encoding.UTF8.GetBytes(messageToEncrypt);
var hybridEncryper = new HybridRsaAes();
hybridEncryper.AssignNewRSAKeys();
RSAParameters publicKey = hybridEncryper.GetPublicRSAKey(); //public key receiver
RSAParameters privateKey = hybridEncryper.GetPrivateRSAKey(); //private key receiver
//Encrypt
byte[] sessionKey = AbstractSecureCompareBase.GenerateRandomNumber(32); //256-bit
byte[] iv = AbstractSecureCompareBase.GenerateRandomNumber(16); //128-bit
byte[] encryptedData = hybridEncryper.EncryptAES(dataToEncrypt, sessionKey, iv);
byte[] hmac = hybridEncryper.ComputeHmac(sessionKey, encryptedData);
byte[] encryptedSessionKey = hybridEncryper.EncryptRSA(sessionKey, publicKey);
//sending encrpyted file....(encryptedData, iv, hmac, encryptedSessionKey)
//Decrypt
byte[] decryptedSessionKey = hybridEncryper.DecryptRSA(encryptedSessionKey, privateKey);
Assert.IsTrue(hybridEncryper.VerifyHmac(decryptedSessionKey, encryptedData, hmac));
byte[] decryptedData = hybridEncryper.DecryptAES(encryptedData, decryptedSessionKey, iv);
Assert.IsTrue(Encoding.UTF8.GetString(decryptedData) == messageToEncrypt);
}
public void TestFullrunWithKeyShare()
{
const string messageToEncrypt = "Important important!";
byte[] dataToEncrypt = Encoding.UTF8.GetBytes(messageToEncrypt);
var hybridEncryper = new HybridRsaAes();
hybridEncryper.AssignNewRSAKeys();
string keyString = hybridEncryper.GetPublicRSAKeyAsXml();
//sending public key string to friend....
var rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(keyString);
Assert.IsTrue(hybridEncryper.GetPublicRSAKeyAsXml() == rsa.ToXmlString(false));
//Encrypt
RSAParameters publicKey = rsa.ExportParameters(false); //public key receiver
byte[] sessionKey = AbstractSecureCompareBase.GenerateRandomNumber(32); //256-bit
byte[] iv = AbstractSecureCompareBase.GenerateRandomNumber(16); //128-bit
byte[] encryptedData = hybridEncryper.EncryptAES(dataToEncrypt, sessionKey, iv);
byte[] hmac = hybridEncryper.ComputeHmac(sessionKey, encryptedData);
byte[] encryptedSessionKey = hybridEncryper.EncryptRSA(sessionKey, publicKey);
//sending encrpyted file....(encryptedData, iv, hmac, encryptedSessionKey)
//Decrypt
RSAParameters privateKey = hybridEncryper.GetPrivateRSAKey(); //private key receiver
byte[] decryptedSessionKey = hybridEncryper.DecryptRSA(encryptedSessionKey, privateKey);
Assert.IsTrue(hybridEncryper.VerifyHmac(decryptedSessionKey, encryptedData, hmac));
byte[] decryptedData = hybridEncryper.DecryptAES(encryptedData, decryptedSessionKey, iv);
Assert.IsTrue(Encoding.UTF8.GetString(decryptedData) == messageToEncrypt);
}