Encryption with Matrix

The following example demonstrates how to encrypt and decrypt customer data with TEAgentMatrix.

---

Code Sample

See the C++ environment settings for details on setting the project environment.

---

<cpp_matrix_encrypt.cpp>

/*****************************************************************************************
*  c++_matrix_encrypt.cpp
*
*     
*  Use TEAgentMatrix for data encryption/decryption.
*
******************************************************************************************/

#include <iostream>
#include "teconnection.h"
#include "teagent.h"
#include "teexception.h"

using namespace ERUCES;
using namespace std;

int main()
{
	string strServerName = "localhost";  // server name
	long   lPort         = 8888;         // port number
	string strUsername   = "alice";      // username
	string strPassword   = "alice1A";    // password  

	try
	{
		auto_ptr<TEConnection> conn = 
			TEConnection::createInstance(TEConnection::NormalConnection);
		
		// Open connection to the server
		conn->open(strServerName, lPort, strUsername, strPassword);

		cout << "Connected to " << strServerName << " at " << lPort 
			<< " as " << strUsername << "\n" << endl; 

		// Create TEAgentMatrix object
		TEAgentMatrix matrix;   

		// Original data for encryption
		string str1_1 = "test string (1, 1)";
		string str1_2 = "test string (1, 2)";
		string str2_1 = "test string (2, 1)";
		string str2_2 = "test string (2, 2)";
		string str2_3 = "test string (2, 3)";
		string str3_1 = "test string (3, 1)";
		
		// Set matrix for encryption
		matrix.setElement(1, 1, str1_1);  // set element (1, 1)
		matrix.setElement(1, 2, str1_2);
		matrix.setElement(2, 1, str2_1);  // set element (2, 1)
		matrix.setElement(2, 2, str2_2);
		matrix.setElement(2, 3, str2_3);
		matrix.setElement(3, 1, str3_1);  // set element (3, 1)

		cout << "Before encryption:\n";
		cout << "Original data:\n";
		cout << str1_1 << ", " << str1_2 << endl;
		cout << str2_1 << ", " << str2_2 << ", " << str2_3 << endl;
		cout << str3_1 << endl;

		// Encrypt matrix
		matrix.attachConnection(conn.operator->());  // Attach connection
		matrix.encrypt();
		matrix.detachConnection();  // Detach connection

		// Get hiddenlink
		matrix.setEncodeMode(true);
		string strHL1, strHL2, strHL3;
		matrix.getHiddenLink(1, strHL1);  // hiddenlink for first row
		matrix.getHiddenLink(2, strHL2);
		matrix.getHiddenLink(3, strHL3);

		// Get encrypted values
		matrix.getElement(1, 1, str1_1);  // get element (1, 1)
		matrix.getElement(1, 2, str1_2);
		matrix.getElement(2, 1, str2_1);  // get element (2, 1)
		matrix.getElement(2, 2, str2_2);
		matrix.getElement(2, 3, str2_3);
		matrix.getElement(3, 1, str3_1);  // get element (3, 1)

		cout << "\nAfter encryption:\n";
		cout << "HiddenLink:\n";			
		cout << strHL1 << "\n";
		cout << strHL2 << "\n";
		cout << strHL3 << "\n";
		cout << "Encrypted data:\n";			
		cout << str1_1 << ", " << str1_2 << endl;
		cout << str2_1 << ", " << str2_2 << ", " << str2_3 << endl;
		cout << str3_1 << endl;

		// Set matrix for decryption
		matrix.clear();                   // clear previous content
		matrix.setDecodeMode(true);
		matrix.setHiddenLink(1, strHL1);  // set hiddenlink for first row
		matrix.setHiddenLink(2, strHL2);
		matrix.setHiddenLink(3, strHL3);

		matrix.setElement(1, 1, str1_1);  // set element (1, 1)
		matrix.setElement(1, 2, str1_2);
		matrix.setElement(2, 1, str2_1);  // set element (2, 1)
		matrix.setElement(2, 2, str2_2);
		matrix.setElement(2, 3, str2_3);
		matrix.setElement(3, 1, str3_1);  // set element (3, 1)

		// Decrypt matrix
		matrix.attachConnection(conn.operator->());
		matrix.decrypt();
		matrix.detachConnection();

		// Get decrypted data
		matrix.setEncodeMode(false);
		matrix.getElement(1, 1, str1_1);  // get element (1, 1)
		matrix.getElement(1, 2, str1_2);
		matrix.getElement(2, 1, str2_1);  // get element (2, 1)
		matrix.getElement(2, 2, str2_2);
		matrix.getElement(2, 3, str2_3);
		matrix.getElement(3, 1, str3_1);  // get element (3, 1)

		cout << "\nAfter decryption:\n";
		cout << "Decrypted data:\n";
		cout << str1_1 << ", " << str1_2 << endl;
		cout << str2_1 << ", " << str2_2 << ", " << str2_3 << endl;
		cout << str3_1 << endl;

		// Close conneciton
		conn->close();

		cout << "Disconnected from server." << endl;
	}
	catch (TEException &e)
	{
		cout <<  e.getAllMessages() << endl;
	}
	catch (...)
	{
		cout << "Unexpected error" << endl;
	}

	return 0;
}

Output
Connected to localhost at 8888 as alice

Before encryption:
Original data:
test string (1, 1), test string (1, 2)
test string (2, 1), test string (2, 2), test string (2, 3)
test string (3, 1)

After encryption:
HiddenLink:
AAAAATJOayYYqRfwoLGOgDFIjORQc6M+o16oiLtGdipJ5yUvBs9RjA==
AAAAATJOayYYqRfwoLGOgDFIjORQc6M+o16oiLtGdipJ5yUvBs9RjA==
AAAAATJOayYYqRfwoLGOgDFIjORQc6M+o16oiLtGdipJ5yUvBs9RjA==
Encrypted data:
V+1vOX6q02hqczSP2kFT34Qo6j5ZwmPC, V+1vOX6q02hqczSP2kFT3yJrLMNXE+kU
V+1vOX6q02iQrLNsCnaMtDhmtdVihBrM, V+1vOX6q02iQrLNsCnaMtIqOfV3dJr/S, V+1vOX6q02iQrLNsCnaMtDrlWJwq2biA
V+1vOX6q02gs7Vn1Uf8WbOklrqsUMcyF

After decryption:
Decrypted data:
test string (1, 1), test string (1, 2)
test string (2, 1), test string (2, 2), test string (2, 3)
test string (3, 1)
Disconnected from server.