To simulate Secure Email Communications projects in MATLAB have includes designing an email encoding, decoding, digital signatures, and authentication protocols. In such replication, we can execute standard encryption techniques like RSA, AES, cryptographic hashing, and email authentication mechanisms.
Here is a step-by-step protocol to mimic secure email communication projects in MATLAB:
Steps to Simulate Secure Email Communications Projects Using MATLAB
- Set up MATLAB Environment
- Make sure that we have MATLAB installed and are understand with basic encryption functions in MATLAB like rsa, aes, hash, and other cryptographic advantages.
- We required extra cryptographic toolboxes, or we can execute standard encryption techniques that understand using built-in MATLAB functions.
- Implement Email Encryption Algorithms
2.1 RSA Encryption (Public-Key Encryption)
- RSA is usually utilized for encoding the email communications and for digital signatures. In RSA, the public key encodes the message, and the private key decodes it.
Generate RSA keys:
% Create RSA public and private key pair
[privateKey, publicKey] = rsa_keygen(1024); % 1024-bit RSA key size
% RSA key generation function (example)
function [privateKey, publicKey] = rsa_keygen(nbits)
% select two large prime numbers
p = randi([2^511, 2^512], 1); % Example prime number (replace with prime generation)
q = randi([2^511, 2^512], 1);
N = p * q;
phi = (p-1) * (q-1);
e = 65537; % Standard public exponent
d = modinv(e, phi); % Private key exponent (modular inverse)
publicKey = struct(‘e’, e, ‘N’, N);
privateKey = struct(‘d’, d, ‘N’, N);
end
Encrypt and Decrypt an Email Message using RSA:
% Encode the message
message = ‘Hello, this is a secure email.’;
m = double(message); % Convert message to numerical format
encryptedMsg = mod(m.^publicKey.e, publicKey.N); % Encrypt using public key
% Decode the message
decryptedMsg = char(mod(encryptedMsg.^privateKey.d, privateKey.N)); % Decrypt using private key
2.2 AES Encryption (Symmetric Encryption)
- AES is usually utilized to encode email content in a protected way before routing it. AES utilizes a symmetric key for both encoding and decoding.
Encrypt and Decrypt Email using AES:
% Define AES encryption key (128-bit key example)
key = ‘mysecretkey12345’; % 128-bit key
% Encrypt the email message using AES
emailMessage = ‘This is a confidential email content.’;
cipherText = aes_encrypt(emailMessage, key);
% Decrypt the message using AES
decryptedText = aes_decrypt(cipherText, key);
% AES Encryption and Decryption (use MATLAB implementations or external libraries)
function cipherText = aes_encrypt(message, key)
cipherText = Crypto.AES.encrypt(message, key);
end
function decryptedText = aes_decrypt(cipherText, key)
decryptedText = Crypto.AES.decrypt(cipherText, key);
end
- Implement Digital Signatures
- Digital signatures are utilized to validate the authenticity of the sender. In RSA-based systems, the private key is utilized to sign the message, and the public key is utilized to validate the signature.
Sign the Email with RSA (Digital Signature)
% Hash the email message
emailHash = hash(emailMessage, ‘SHA-256’); % Use SHA-256 for hashing
% Sign the email message using the private key (RSA Signature)
signature = mod(emailHash.^privateKey.d, privateKey.N); % Signature using RSA private key
% Validate the signature using the public key
verificationHash = mod(signature.^publicKey.e, publicKey.N); % Decrypt the signature with public key
isValid = isequal(emailHash, verificationHash); % Check if the hash matches
if isValid
disp(‘The email signature is valid.’);
else
disp(‘Invalid email signature.’);
end
- Email Authentication Using Hashing
- Execute hashing algorithms such as SHA-256 to create message digests for email integrity to validate. Hashing is usually utilized together with digital signatures.
Generate and Verify Email Hash
% Hash the email message
emailHash = hash(emailMessage, ‘SHA-256’); % Generate SHA-256 hash
disp([‘Email Hash: ‘, emailHash]);
% Example of verifying the email hash during transmission
receivedHash = hash(receivedMessage, ‘SHA-256’);
if isequal(emailHash, receivedHash)
disp(‘Email integrity is verified.’);
else
disp(‘Email has been tampered with.’);
end
- Email Communication Simulation
- Replicate transmitting and receiving encrypted and sign up emails among two users, and validate the email’s integrity, legitimacy, and privacy.
Example: Simulate Email Communication between Sender and Receiver
% Sender Side:
% encrypts the email and signs it
emailMessage = ‘This is a secure email communication.’;
encryptedEmail = aes_encrypt(emailMessage, key); % AES encryption
emailHash = hash(emailMessage, ‘SHA-256’); % Create hash of email
emailSignature = mod(emailHash.^privateKey.d, privateKey.N); % Sign with private key
% Transmit the encrypted email and the signature to the receiver
% Receiver Side:
% Decrypt the email and verify signature
decryptedEmail = aes_decrypt(encryptedEmail, key); % AES decryption
receivedHash = hash(decryptedEmail, ‘SHA-256’); % Generate hash for verification
receivedSignature = emailSignature; % Assume the signature is transmitted
verificationHash = mod(receivedSignature.^publicKey.e, publicKey.N); % Verify signature
% Validate the email’s integrity and authenticity
if isequal(receivedHash, verificationHash)
disp(‘Email is authentic and integrity is verified.’);
else
disp(‘Email signature verification failed.’);
end
- Security Measures:
- Execute secure transport protocols like TLS for encoding the communication channel.
- Utilize two-factor authentication (2FA) replication by creating a one-time password (OTP) transmits to the user’s mobile/email for login.
Two-Factor Authentication (2FA) Simulation
% Generate a random OTP for the user
OTP = randi([100000, 999999]); % 6-digit OTP
disp([‘Your OTP is: ‘, num2str(OTP)]);
% Simulate the OTP verification process
userInputOTP = input(‘Enter the OTP sent to your email: ‘);
if userInputOTP == OTP
disp(‘OTP verified successfully.’);
else
disp(‘OTP verification failed.’);
end
- Performance Analysis
- Evaluate key parameters such as:
- Encryption/Decryption time for RSA and AES.
- Hashing time for creating and checking the hash.
- Security levels: Measure the efficiency of different key sizes such as 1024-bit, 2048-bit RSA and AES key lengths like 128-bit, 256-bit.
Example of estimating encryption/decryption time:
% evaluate encryption and decryption time
tic;
encryptedEmail = aes_encrypt(emailMessage, key);
encryptionTime = toc;
tic;
decryptedEmail = aes_decrypt(encryptedEmail, key);
decryptionTime = toc;
fprintf(‘AES Encryption Time: %.4f seconds\n’, encryptionTime);
fprintf(‘AES Decryption Time: %.4f seconds\n’, decryptionTime);
Example Secure Email Communication Project Ideas:
- RSA-based Secure Email System: mimic email encryption and decryption using RSA, with digital signatures for email authentication.
- AES-based Encrypted Email Communication: Execute AES encryption for email content and replicate secure communication among sender and receiver.
- Hybrid Email Security System: Integrate AES for rapid content encryption and RSA for protect key exchange in email communication.
- Two-Factor Authentication for Email Access: Execute a 2FA system using OTPs to protect email access.
- Email Integrity and Authentication: Improve a system which validates the integrity of email messages using cryptographic hashing and digital signatures.
In this simulation setup, we have been clearly understood the concepts and learn the essential procedures to simulate the Secure Email Communications projects that has includes the installation procedures and apply the security techniques and then visualized the outcomes through MATLAB analysis too. Further details will be provided later. If you’re looking for a professional touch on your project, let the team at phdprime.com take care of it. With over 20 years of experience in research and development, we can help you complete your Secure Email Communications Projects using MATLAB simulation, all while ensuring your topic is spot on.
