Andrey Ruzhanskiy

Andrey Ruzhanskiy

Software Engineer

Biography

I’m a final year Computer Science student at TU Dresden. I have previous work experience in testing, software development and cryptography from internships at Accenture and from various student theses. I’ve also been a student assistant at the Chair of Computer Networks. For an impression of the technologies I have worked with and knowledge that I’ve gained, please take a look at some of the projects I have completed.

Interests
  • Cryptography
  • Software Testing
  • Computer Networks
  • Software Development
Education

  • Diplom (Grade 1.3, GPA 3.7) Computer Science, 2021

    TU Dresden

Skills

crypto
Crypto/Security
5G
5G
java
Java
c
C
linux
Linux
network
Network technologies

Experience

 
 
 
 
 
Accenture
Testing Engineer Intern
Accenture
Oct 2018 – Jan 2019 Kesselsdorf
  • Design and implementation of test cases for ServiceNow
  • End-to-End Test automation with Tosca Tricentis
  • Deploying on server infrastructure for testing of ServiceNow instances
 
 
 
 
 
Accenture
Student Employee
Accenture
Jul 2018 – Sep 2018 Kesselsdorf
  • Continuous Testing for workflow integration on the ServiceNow platform
  • Concept Testing for testing tools
 
 
 
 
 
Dresden University of Technology - Chair of Computer Networks
Student Assistant
Dresden University of Technology - Chair of Computer Networks
Mar 2017 – Sep 2017 Dresden
  • Implementation of a simulator (based on Java and C++) for the interplanetary Internet as an Delay Tolerant Network (DTN)
  • Usage of ZeroMQ for socket-based communication between simulator tools

Accomplish­ments

TRICENTIS
Automation Specialist Level 2
TRICENTIS Oct 2018
TRICENTIS
Automation Specialist Level 1
TRICENTIS Oct 2018
ISTQB
ISTQB Certified Tester - Foundation Level
ISTQB Mar 2018
Certification number: 18-CTFL-131790-01

Projects

*
All Java C C++ Crypto/Security
Reverse engineering of Tor's key agreement protocol
As part of my student thesis, I reverse engineered the “Tor Rendezvous Specification - Version 3” so I could take inspiration for my own key agreement protocol. This was done purely on code basis, as the informal description was lacking detail in many regards. As part of that, I translated the informal description of the key agreement given on the TOR project page into an formal cryptographic one.
Reverse engineering of Tor's key agreement protocol
AN.ON Client Application Extension
Design and implementation of recipient anonymity on the client side of AN.ON. Includes the design of a new key agreement protocol, with inspiration taken from TOR’s key agreement protocol. Uses a custom version of the Bouncy Castle crypto library. Encryption is done via AES-128 CTR, signatures are beeing generated via Ed25519 and Curve25519 is used as the underlying key agreement mechanism.
AN.ON Client Application Extension
BraillePlot
A Java-based tool to create Braille embosser text files for generic diagram representations, which then can be printed on an Braille embosser. To ensure extensibility and variability of the Software, the architecture was designed with these corresponding patterns in mind, so that generic Braille printers and embossers can be used interchangably. A visualization tool (also in Java) was created so that the user has a preview option of the Braille text which will be printed.
BraillePlot
Risk assessment and evaluation of ORAN
As part of a student thesis, I identified, evaluated and prioritized risks of an ORAN-Infrastructure for the typical UE. As a result, I successfully found high-priority risks in both ORAN and the “normal” RAN architecture defined by the 3GPP and I compared these against each other.
Risk assessment and evaluation of ORAN
Towards protection of availability in 5G-Networks
My Diploma Thesis, which was about the protection of availability in 5G-Networks. The goal was to estimate, if the 3GPP standards could be misused in such a way, that an insider, in form of a misbehaving 5G core component, could leverage attacks against the availability of the 5G-Network.
Towards protection of availability in 5G-Networks
Simulator for interplanetary Internet
Project collaboration on a Java and C++ based simulator for interplanetary internet, which includes the bundle protocol for Delay Tolerant Networking.
Simulator for interplanetary Internet
AN.ON Server Application Extension
Design and implementation of recipient anonymity on the server side of AN.ON. Although the client is written in Java, the server (for performance reasons) is purely written in C. Uses a custom version of OpenSSL for encryption, signatures and key agreement mechanisms.
AN.ON Server Application Extension