how to calculate amount of energy consumption energy cryptography and steganography in matlab?

how to get energy amount of energy consumption in encrption and decryption as well as hiding and extracting?

Answer 1

[Sameer]

Hi Wubie

To calculate the energy consumption of cryptographic and steganographic processes, you need to measure the computational resources used during these operations, such as CPU time and power consumption.

Here’s a general approach to achieve this:

1. Profile the Code: Use MATLAB's "tic" and "toc" functions to measure the execution time of your encryption, decryption, hiding, and extraction processes.

2. Estimate Power Consumption: Determine the average power consumption of your CPU, which can be obtained from system specifications or external tools.

3. Calculate Energy Consumption: Use the formula Energy = Power × Time to calculate the energy consumption for each process in joules.

Below is an example implementation:

% Define the encryption, decryption, hiding, and extraction functions
function encryptedData = encrypt(data)
% Example encryption algorithm
encryptedData = data; % Replace with actual encryption logic
end

function decryptedData = decrypt(encryptedData)
% Example decryption algorithm
decryptedData = encryptedData; % Replace with actual decryption logic
end

function stegoData = hideData(data, message)
% Example data hiding algorithm
stegoData = data; % Replace with actual steganography logic
end

function extractedMessage = extractData(stegoData)
% Example data extraction algorithm
extractedMessage = ''; % Replace with actual extraction logic
end

% Sample data
data = 'This is a sample data';
message = 'Secret';

% Measure encryption time
tic;
encryptedData = encrypt(data);
encryptionTime = toc;

% Measure decryption time
tic;
decryptedData = decrypt(encryptedData);
decryptionTime = toc;

% Measure hiding time
tic;
stegoData = hideData(data, message);
hidingTime = toc;

% Measure extraction time
tic;
extractedMessage = extractData(stegoData);
extractionTime = toc;

% Assume average power consumption (in watts)
averagePower = 50; % Replace with actual power consumption of your system

% Calculate energy consumption (in joules)
encryptionEnergy = averagePower * encryptionTime;
decryptionEnergy = averagePower * decryptionTime;
hidingEnergy = averagePower * hidingTime;
extractionEnergy = averagePower * extractionTime;

% Display results
fprintf('Encryption Energy: %.4f J\n', encryptionEnergy);
fprintf('Decryption Energy: %.4f J\n', decryptionEnergy);
fprintf('Hiding Energy: %.4f J\n', hidingEnergy);
fprintf('Extraction Energy: %.4f J\n', extractionEnergy);

Hope this helps!

Answer 2

[Walter Roberson]

Accurately measuring energy consumption on a host MATLAB session is very difficult. You need to take into account that the computation might involve multiple cores, and might involve Computation cores versus Energy Efficiency cores, and that the session might get interrupted at any time for servicing interrupts or for anti-virus scans. You also run into the problem that the energy might happen to be slightly different depending on where MATLAB happened to store the data in memory -- there is no way to pin memory to particular memory addresses.

Matters are generally much clearer on MATLAB Coder generated code for embedded target (such as Raspberry Pi.) But then you are partly measuring Quality Of Implementation, and quality of the target instruction set, rather than just some kind of theoretical energy consumption.