How to Implement Certificate less Cryptography in OMNeT++
To implement the certificate less cryptography in OMNeT++ has needs includes mimicking a safe communication situation where nodes replace data using certificate less public key cryptography (CL-PKC). Certificate less cryptography removes the essential for certificates, decreasing the burden of certificate management while still preventing the key escrow problem linked with identity-based cryptography.
Steps to Implement Certificate less Cryptography in OMNeT++
- Set up the Network Environment
Initially describe the network topology where nodes will communicate securely using certificate less cryptography. The topology might contain:
- Client Nodes: These nodes will encode data using the recipient’s public key.
- Server Nodes: These nodes will decrypt the received data using a grouping of a partial private key from a Key Generation Centre (KGC) and a private key generated by the server itself.
- Key Generation Centre (KGC): This object makes partial private keys for users based on their identity.
Network Topology Setup:
Describe the basic modules for the network:
simple ClientNode
{
parameters:
@display(“i=block/pc”);
gates:
inout ethg;
}
simple ServerNode
{
parameters:
@display(“i=block/server”);
gates:
inout ethg;
}
simple KeyGenerationCenter
{
parameters:
@display(“i=block/key”);
gates:
inout ethg;
}
network CLPKCNetwork
{
submodules:
client: ClientNode;
server: ServerNode;
kgc: KeyGenerationCenter;
connections:
client.ethg <–> server.ethg;
client.ethg <–> kgc.ethg;
server.ethg <–> kgc.ethg;
}
- Implement the Key Generation Center (KGC)
The KGC is responsible for making partial private keys based on the user’s identity. The full private key is created by joining this partial private key with a secret value made by the user.
KGC Logic:
class KeyGenerationCenter : public cSimpleModule {
private:
std::map<std::string, std::string> partialPrivateKeys; // Mapping of identity to partial private key
protected:
virtual void initialize() override {
// Generate partial private keys for demonstration
partialPrivateKeys[“client”] = “partialPrivateKeyClient”;
partialPrivateKeys[“server”] = “partialPrivateKeyServer”;
}
virtual void handleMessage(cMessage *msg) override {
cPacket *pkt = check_and_cast<cPacket*>(msg);
std::string identity = pkt->par(“identity”).stringValue();
std::string partialPrivateKey = getPartialPrivateKey(identity);
// Respond with the partial private key
cPacket *response = new cPacket(“KeyResponse”);
response->addPar(“partialPrivateKey”) = partialPrivateKey;
send(response, “ethg$o”);
}
std::string getPartialPrivateKey(const std::string &identity) {
return partialPrivateKeys[identity];
}
};
- Implement Certificate less Encryption and Decryption
The client encrypts data using the server’s public key, which is obtained from the server’s identity and a secret value. The server decrypts the data using its full private key, which is obtained from the partial private key received from the KGC and its own secret value.
- Client Encryption Logic:
class ClientNode : public cSimpleModule {
private:
std::string serverIdentity = “server”; // Server’s identity
std::string serverPublicKey;
protected:
virtual void initialize() override {
// Request server’s public key (for simplicity, assume it’s derived from identity and a secret value)
deriveServerPublicKey();
encryptAndSendData();
}
virtual void handleMessage(cMessage *msg) override {
// Handle incoming messages (e.g., key responses)
}
void deriveServerPublicKey() {
// For demonstration, derive the public key from the identity and a simple operation
serverPublicKey = “publicKeyDerivedFrom_” + serverIdentity;
}
void encryptAndSendData() {
std::string data = “SensitiveData”;
std::string encryptedData = encryptData(data, serverPublicKey);
cPacket *dataPacket = new cPacket(“EncryptedData”);
dataPacket->addPar(“data”) = encryptedData;
send(dataPacket, “ethg$o”);
}
std::string encryptData(const std::string &data, const std::string &publicKey) {
// Simple XOR encryption for demonstration (using public key)
std::string encryptedData = data;
for (size_t i = 0; i < data.size(); ++i) {
encryptedData[i] ^= publicKey[i % publicKey.size()];
}
return encryptedData;
}
};
- Server Decryption Logic:
class ServerNode : public cSimpleModule {
private:
std::string partialPrivateKey;
std::string privateKey; // Full private key derived from partial private key and a secret value
protected:
virtual void initialize() override {
// Request partial private key from the KGC
requestPartialPrivateKey();
}
virtual void handleMessage(cMessage *msg) override {
cPacket *pkt = check_and_cast<cPacket*>(msg);
if (strcmp(pkt->getName(), “KeyResponse”) == 0) {
partialPrivateKey = pkt->par(“partialPrivateKey”).stringValue();
deriveFullPrivateKey();
EV << “Received and derived full private key: ” << privateKey << endl;
} else if (strcmp(pkt->getName(), “EncryptedData”) == 0) {
std::string encryptedData = pkt->par(“data”).stringValue();
std::string decryptedData = decryptData(encryptedData, privateKey);
EV << “Received and decrypted data: ” << decryptedData << endl;
}
delete pkt;
}
void requestPartialPrivateKey() {
cPacket *request = new cPacket(“KeyRequest”);
request->addPar(“identity”) = “server”;
send(request, “ethg$o”);
}
void deriveFullPrivateKey() {
// Combine partial private key with a secret value to derive the full private key
std::string secretValue = “secretValueServer”;
privateKey = partialPrivateKey + secretValue; // Simple concatenation for demonstration
}
std::string decryptData(const std::string &data, const std::string &key) {
// Simple XOR decryption (same as encryption in this case)
std::string decryptedData = data;
for (size_t i = 0; i < data.size(); ++i) {
decryptedData[i] ^= key[i % key.size()];
}
return decryptedData;
}
};
- Simulate and Evaluate the Certificate less Cryptography
Run simulations to assess the performance and exactness of the certificate less cryptography execution:
- Verify Correctness: Make sure that the client effectively encrypts the data with the server’s public key and that the server appropriately decrypts it using the full private key obtained from its partial private key and secret value.
- Measure Performance: Calculate the time it takes for encryption and decryption and how it influences communication latency.
- Test Key Distribution: Make certain that the KGC properly delivers partial private keys and that they are used to obtain the full private keys.
- Enhance Security and Realism
To further improve the implementation:
- Use Real Cryptographic Algorithms: Substitute the easy XOR encryption with a real certificate less encryption algorithm, like those based on pairing-based cryptography.
- Simulate Key Management: Execute more sophisticated key management protocols, containing key revocation and renewal.
- Handle Larger Scenarios: Develop the network topology to contain numerous clients and servers, and mimic a realistic certificate less cryptography system.
In this paper, we are learned about how to execute and analyse the certificate less cryptography in the OMNeT++ simulation tool and also we deliver the detailed data about certificate less cryptography in various tool.
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