weynard02 / ki-assignments

NRP	Name
5025211008	Muhammad Razan Athallah
5025211014	Alexander Weynard Samsico
5025211139	Apta Rasendriya Wijaya
5025211158	Ghifari Maaliki Syafa Syuhada

Report

To showcase the difference between 3 distinct encryption method, namely Advanced Encryption Standard (AES), Data Encryption Standard (DES), and RC4, we made a simple CRUD web app using Laravel with the following features:

1. Authenticating user with password
2. Giving file access to authorized user
3. Encrypting files and storing it in the database
4. Decrypting stored files before downloading

Here is a preview of our website:

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Benchmark

The methodology employed for benchmarking the three encryption methods involves a comparative analysis of their decryption times across three distinct file sizes: 500KB, 1MB, and 2MB. The constraint of adhering to the size limitations imposed by HTTP POST requests necessitates the use of smaller file sizes. To measure decryption performance, the evaluation leverages the user runtime and system runtime metrics obtained through the utilization of the rusage() function in PHP. This process entails conducting 30 iterations for each combination, thereby accumulating a total of 270 trials. The resulting outcomes are summarized as follows:

AES

File size	Average time
500 kB	0.006678
1 MB	0.014271
2 MB	0.024004

DES

File size	Average time
500 kB	0.01681
1 MB	0.065642
2 MB	0.111473

RC4

File size	Average time
500 kB	0.102148
1 MB	0.21458
2 MB	0.301408

Result

In terms of processing speed, the test results indicate that AES outperformed the other two encryption methods, which is noteworthy considering AES is renowned for its robust security features. This counterintuitive outcome underscores the efficiency of AES encryption. Following AES, DES emerged as the second fastest, with RC4 ranking third in terms of speed.